Bump version to 5.15.4

* Mute icon in wrong location in RTL
* No exit animation when dismissing conversation settings
* Thumbnails flicker when you come back to conversation settings
* Rounded corners for mute dialog don't match other dialogs
* Mute button in note-to-self conversation settings
* Explore adding contact details to the contact bottom sheet

.editorconfig

@@ -0,0 +1,4 @@
+root = true
+
+[*.kt]
+indent_size = 2

.github/FUNDING.yml

@@ -0,0 +1 @@
+custom: https://signal.org/donate/

.github/ISSUE_TEMPLATE.md

@@ -1,45 +0,0 @@
-<!-- This is a bug report template. By following the instructions below and filling out the sections with your information, you will help the developers get all the necessary data to fix your issue.
-You can also preview your report before submitting it. You may remove sections that aren't relevant to your particular case.
-
-Before we begin, please note that this tracker is only for issues. It is not for questions, comments, or feature requests.
-
-If you would like to discuss a new feature or submit suggestions, please visit the community forum:
-https://community.signalusers.org
-
-If you are looking for support, please visit our support center:
-https://support.signal.org/
-or email support@signal.org
-
-Let's begin with a checklist: Replace the empty checkboxes [ ] below with checked ones [x] accordingly. -->
-
-- [ ] I have searched open and closed issues for duplicates
-- [ ] I am submitting a bug report for existing functionality that does not work as intended
-- [ ] I have read https://github.com/signalapp/Signal-Android/wiki/Submitting-useful-bug-reports
-- [ ] This isn't a feature request or a discussion topic
-
-----------------------------------------
-
-### Bug description
-Describe here the issue that you are experiencing.
-
-### Steps to reproduce
-- using hyphens as bullet points
-- list the steps
-- that reproduce the bug
-
-**Actual result:** Describe here what happens after you run the steps above (i.e. the buggy behaviour)
-**Expected result:** Describe here what should happen after you run the steps above (i.e. what would be the correct behaviour)
-
-### Screenshots
-<!-- you can drag and drop images below -->
-
-
-### Device info
-<!-- replace the examples with your info -->
-**Device:** Manufacturer Model XVI
-**Android version:** 0.0.0
-**Signal version:** 0.0.0
-
-### Link to debug log
-<!-- immediately after the bug has happened capture a debug log via Signal's advanced settings and paste the link below -->
-

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,54 @@
+---
+name: 🛠️ Bug report
+about: Let us know that something isn't working as intended
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!-- This is a bug report template. By following the instructions below and filling out the sections with your information, you will help the developers get all the necessary data to fix your issue.
+You can also preview your report before submitting it. You may remove sections that aren't relevant to your particular case.
+
+Before we begin, please note that this tracker is only for issues. It is not for questions, comments, or feature requests.
+
+If you would like to discuss a new feature or submit suggestions, please visit the community forum:
+https://community.signalusers.org
+
+If you are looking for support, please visit our support center:
+https://support.signal.org/
+or email support@signal.org
+
+Let's begin with a checklist: Replace the empty checkboxes [ ] below with checked ones [x] accordingly. -->
+
+- [ ] I have searched open and closed issues for duplicates
+- [ ] I am submitting a bug report for existing functionality that does not work as intended
+- [ ] I have read https://github.com/signalapp/Signal-Android/wiki/Submitting-useful-bug-reports
+- [ ] This isn't a feature request or a discussion topic
+
+----------------------------------------
+
+### Bug description
+Describe here the issue that you are experiencing.
+
+### Steps to reproduce
+- using hyphens as bullet points
+- list the steps
+- that reproduce the bug
+
+**Actual result:** Describe here what happens after you run the steps above (i.e. the buggy behaviour)
+**Expected result:** Describe here what should happen after you run the steps above (i.e. what would be the correct behaviour)
+
+### Screenshots
+<!-- you can drag and drop images below -->
+
+
+### Device info
+<!-- replace the examples with your info -->
+**Device:** Manufacturer Model XVI
+**Android version:** 0.0.0
+**Signal version:** 0.0.0
+
+### Link to debug log
+<!-- immediately after the bug has happened capture a debug log via Signal's advanced settings and paste the link below -->
+

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,20 @@
+blank_issues_enabled: false
+contact_links:
+  - name: 📃Support Center
+    url: https://support.signal.org/
+    about: Find answers to many common questions.
+  - name: ✨ Feature request
+    url: https://community.signalusers.org/c/feature-requests/
+    about: Missing something in Signal? Let us know.
+  - name: 💬 Community support
+    url: https://community.signalusers.org/c/support/
+    about: Feel free to ask anything.
+  - name: 📖 Developer documentation
+    url: https://signal.org/docs/
+    about: Official Signal developer documentation.
+  - name: 📚 Translation feedback.
+    url: https://community.signalusers.org/c/translation-feedback/
+    about: Share feedback on translations.
+  - name: ❓ Other issue?
+    url: https://community.signalusers.org/
+    about: Search on the community forums.

.github/workflows/android.yml

@@ -6,6 +6,7 @@ on:
     branches:
     - 'master'
     - '4.**'
+    - '5.**'
 
 jobs:
   build:
@@ -13,12 +14,25 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
+
     - name: set up JDK 1.8
       uses: actions/setup-java@v1
       with:
         java-version: 1.8
+
     - name: Validate Gradle Wrapper
       uses: gradle/wrapper-validation-action@v1
+
+    - name: Remove Android S
+      run: $ANDROID_HOME/tools/bin/sdkmanager --uninstall "platforms;android-S"
+
     - name: Build with Gradle
       run: ./gradlew qa
+
+    - name: Archive reports for failed build
+      if: ${{ failure() }}
+      uses: actions/upload-artifact@v2
+      with:
+        name: reports
+        path: '*/build/reports'

.github/workflows/docker.yml

@@ -0,0 +1,18 @@
+name: Reproducible Build Check
+
+on:
+  schedule:
+    - cron: '0 5 * * *'
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build image
+      run: cd reproducible-builds && docker build -t signal-android . && cd ..
+
+    - name: Test build
+      run: docker run --rm -v $(pwd):/project -w /project signal-android ./gradlew clean assembleRelease

.gitignore

@@ -1,6 +1,8 @@
 .classpath
 captures/
 project.properties
+keystore.debug.properties
+keystore.staging.properties
 .project
 .settings
 bin/
@@ -23,5 +25,5 @@ ffpr
 test/androidTestEspresso/res/values/arrays.xml
 obj/
 jni/libspeex/.deps/
-*.sh
 pkcs11.password
+dev.keystore

.idea/codeStyles/Project.xml

@@ -0,0 +1,193 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <option name="RIGHT_MARGIN" value="240" />
+    <option name="FORMATTER_TAGS_ENABLED" value="true" />
+    <option name="SOFT_MARGINS" value="160" />
+    <JavaCodeStyleSettings>
+      <option name="GENERATE_FINAL_LOCALS" value="true" />
+      <option name="DO_NOT_WRAP_AFTER_SINGLE_ANNOTATION" value="true" />
+      <option name="ALIGN_MULTILINE_ANNOTATION_PARAMETERS" value="true" />
+      <option name="ALIGN_MULTILINE_TEXT_BLOCKS" value="true" />
+    </JavaCodeStyleSettings>
+    <JetCodeStyleSettings>
+      <option name="PACKAGES_TO_USE_STAR_IMPORTS">
+        <value />
+      </option>
+      <option name="NAME_COUNT_TO_USE_STAR_IMPORT" value="2147483647" />
+      <option name="NAME_COUNT_TO_USE_STAR_IMPORT_FOR_MEMBERS" value="2147483647" />
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </JetCodeStyleSettings>
+    <codeStyleSettings language="JAVA">
+      <option name="BRACE_STYLE" value="5" />
+      <option name="CLASS_BRACE_STYLE" value="5" />
+      <option name="METHOD_BRACE_STYLE" value="5" />
+      <option name="ALIGN_MULTILINE_CHAINED_METHODS" value="true" />
+      <option name="ALIGN_MULTILINE_PARAMETERS_IN_CALLS" value="true" />
+      <option name="ALIGN_MULTILINE_BINARY_OPERATION" value="true" />
+      <option name="ALIGN_MULTILINE_ASSIGNMENT" value="true" />
+      <option name="ALIGN_MULTILINE_TERNARY_OPERATION" value="true" />
+      <option name="ALIGN_MULTILINE_THROWS_LIST" value="true" />
+      <option name="ALIGN_MULTILINE_EXTENDS_LIST" value="true" />
+      <option name="ALIGN_MULTILINE_ARRAY_INITIALIZER_EXPRESSION" value="true" />
+      <option name="ALIGN_GROUP_FIELD_DECLARATIONS" value="true" />
+      <option name="ALIGN_CONSECUTIVE_VARIABLE_DECLARATIONS" value="true" />
+      <option name="ALIGN_CONSECUTIVE_ASSIGNMENTS" value="true" />
+      <option name="SPACE_WITHIN_ARRAY_INITIALIZER_BRACES" value="true" />
+      <option name="SPACE_BEFORE_ARRAY_INITIALIZER_LBRACE" value="true" />
+      <option name="METHOD_CALL_CHAIN_WRAP" value="1" />
+      <option name="WRAP_FIRST_METHOD_IN_CALL_CHAIN" value="true" />
+      <option name="BINARY_OPERATION_SIGN_ON_NEXT_LINE" value="true" />
+      <option name="TERNARY_OPERATION_SIGNS_ON_NEXT_LINE" value="true" />
+      <option name="KEEP_SIMPLE_BLOCKS_IN_ONE_LINE" value="true" />
+      <option name="KEEP_SIMPLE_METHODS_IN_ONE_LINE" value="true" />
+      <option name="KEEP_SIMPLE_LAMBDAS_IN_ONE_LINE" value="true" />
+      <option name="KEEP_MULTIPLE_EXPRESSIONS_IN_ONE_LINE" value="true" />
+      <option name="METHOD_ANNOTATION_WRAP" value="0" />
+      <option name="CLASS_ANNOTATION_WRAP" value="0" />
+      <option name="FIELD_ANNOTATION_WRAP" value="0" />
+      <option name="ENUM_CONSTANTS_WRAP" value="5" />
+      <option name="WRAP_ON_TYPING" value="0" />
+      <indentOptions>
+        <option name="INDENT_SIZE" value="2" />
+        <option name="CONTINUATION_INDENT_SIZE" value="4" />
+        <option name="TAB_SIZE" value="2" />
+      </indentOptions>
+      <arrangement>
+        <groups>
+          <group>
+            <type>GETTERS_AND_SETTERS</type>
+            <order>KEEP</order>
+          </group>
+          <group>
+            <type>OVERRIDDEN_METHODS</type>
+            <order>KEEP</order>
+          </group>
+          <group>
+            <type>DEPENDENT_METHODS</type>
+            <order>BREADTH_FIRST</order>
+          </group>
+        </groups>
+      </arrangement>
+    </codeStyleSettings>
+    <codeStyleSettings language="XML">
+      <indentOptions>
+        <option name="CONTINUATION_INDENT_SIZE" value="4" />
+      </indentOptions>
+      <arrangement>
+        <rules>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:android</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:id</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>style</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>ANDROID_ATTRIBUTE_ORDER</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>.*</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+        </rules>
+      </arrangement>
+    </codeStyleSettings>
+    <codeStyleSettings language="kotlin">
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+      <indentOptions>
+        <option name="INDENT_SIZE" value="2" />
+        <option name="CONTINUATION_INDENT_SIZE" value="4" />
+        <option name="TAB_SIZE" value="2" />
+      </indentOptions>
+    </codeStyleSettings>
+  </code_scheme>
+</component>

.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>

CONTRIBUTING.md

@@ -83,7 +83,7 @@ There are several other ways to get involved:
 * Try to reproduce issues and help with troubleshooting.
 * Discover solutions to open issues and post any relevant findings.
 * Test other people's pull requests.
-* Contribute to Signal via the [Freedom of the Press Foundation's donation page](https://freedom.press/crowdfunding/signal/).
+* [Donate to Signal.](https://signal.org/donate/)
 * Share Signal with your friends and family.
 
 Signal is made for you. Thank you for your feedback and support.

Dockerfile

@@ -1,25 +0,0 @@
-FROM ubuntu:17.10
-
-RUN dpkg --add-architecture i386 && \
-    apt-get update -y && \
-    apt-get install -y software-properties-common && \
-    apt-get update -y && \
-    apt-get install -y libc6:i386=2.26-0ubuntu2.1 libncurses5:i386=6.0+20160625-1ubuntu1 libstdc++6:i386=7.2.0-8ubuntu3.2 lib32z1=1:1.2.11.dfsg-0ubuntu2 wget openjdk-8-jdk=8u171-b11-0ubuntu0.17.10.1 git unzip opensc pcscd && \
-    rm -rf /var/lib/apt/lists/* && \
-    apt-get autoremove -y && \
-    apt-get clean
-
-ENV ANDROID_SDK_FILENAME android-sdk_r24.4.1-linux.tgz
-ENV ANDROID_SDK_URL https://dl.google.com/android/${ANDROID_SDK_FILENAME}
-ENV ANDROID_API_LEVELS android-28
-ENV ANDROID_BUILD_TOOLS_VERSION 28.0.3
-ENV ANDROID_HOME /usr/local/android-sdk-linux
-ENV PATH ${PATH}:${ANDROID_HOME}/tools:${ANDROID_HOME}/platform-tools
-RUN cd /usr/local/ && \
-    wget -q ${ANDROID_SDK_URL} && \
-    tar -xzf ${ANDROID_SDK_FILENAME} && \
-    rm ${ANDROID_SDK_FILENAME} 
-RUN echo y | android update sdk --no-ui -a --filter ${ANDROID_API_LEVELS}
-RUN echo y | android update sdk --no-ui -a --filter extra-android-m2repository,extra-android-support,extra-google-google_play_services,extra-google-m2repository
-RUN echo y | android update sdk --no-ui -a --filter tools,platform-tools,build-tools-${ANDROID_BUILD_TOOLS_VERSION}
-RUN rm -rf ${ANDROID_HOME}/tools && unzip ${ANDROID_HOME}/temp/*.zip -d ${ANDROID_HOME}

README.md

@@ -59,9 +59,7 @@ The form and manner of this distribution makes it eligible for export under the
 
 ## License
 
-Copyright 2011 Whisper Systems
+Copyright 2013-2020 Signal
-
-Copyright 2013-2020 Open Whisper Systems
 
 Licensed under the GPLv3: http://www.gnu.org/licenses/gpl-3.0.html
 

ReproducibleBuilds.md

@@ -1,287 +0,0 @@
-# Reproducible Builds
-
-
-## TL;DR
-
-You can just use these [instructions](https://signal.org/blog/reproducible-android/) from the official announcement at Open Whisper Systems's blog:
-```
-# Clone the Signal Android source repository
-$ git clone https://github.com/signalapp/Signal-Android.git && cd Signal-Android
-
-# Check out the release tag for the version you'd like to compare
-$ git checkout v[the version number]
-
-# Build using the Docker environment
-$ docker run --rm -v $(pwd):/project -w /project whispersystems/signal-android:1.3 ./gradlew clean assembleRelease
-
-# Verify the APKs
-$ python3 apkdiff/apkdiff.py build/outputs/apks/project-release-unsigned.apk path/to/SignalFromPlay.apk
-```
-
-Note that the instructions above use a pre-built Signal Docker image from [Docker Hub](https://hub.docker.com/u/whispersystems/). If you wish to compile the image yourself, continue reading the longer version below.
-
-
-***
-
-
-## Introduction
-
-Since version 3.15.0 Signal for Android has supported reproducible builds. This is achieved by replicating the build environment as a Docker image. You'll need to build the image, run a container instance of it, compile Signal inside the container and finally compare the resulted APK to the APK that is distributed in the Google Play Store.
-
-The command line parts in this guide are written for Linux but with some little modifications you can adapt them to macOS (OS X) and Windows. In the following sections we will use `3.15.2` as an example Signal version. You'll just need to replace all occurrences of `3.15.2` with the version number you are about to verify.
-
-
-## Setting up directories
-
-First let's create a new directory for this whole reproducible builds project. In your home folder (`~`), create a new directory called `reproducible-signal`.
-```
-user@host:$ mkdir ~/reproducible-signal
-```
-
-Next create another directory inside `reproducible-signal` called `apk-from-google-play-store`.
-```
-user@host:$ mkdir ~/reproducible-signal/apk-from-google-play-store
-```
-
-We will use this directory to share APKs between the host OS and the Docker container.
-
-Finally create one more directory inside `reproducible-signal` called `image-build-context`.
-```
-user@host:$ mkdir ~/reproducible-signal/image-build-context
-```
-
-This directory will be used later to build our Docker image.
-
-
-## Getting the Google Play Store version of Signal APK
-
-To compare the APKs we of course need a version of Signal from the Google Play Store.
-
-First make sure that the Signal version you want to verify is installed on your Android device. You'll need `adb` for this part.
-
-Plug your device to your computer and run this command to pull the APK from the device:
-
-```
-user@host:$ adb pull $(adb shell pm path org.thoughtcrime.securesms | grep /base.apk | awk -F':' '{print $2}') ~/reproducible-signal/apk-from-google-play-store/Signal-$(adb shell dumpsys package org.thoughtcrime.securesms | grep versionName | awk -F'=' '{print $2}').apk
-```
-
-This will pull a file into `~/reproducible-signal/apk-from-google-play-store/` with the name `Signal-<version>.apk`
-
-Alternatively, you can do this step-by-step:
-
-```
-user@host:$ adb shell pm path org.thoughtcrime.securesms
-```
-This will output something like:
-```
-package:/data/app/org.thoughtcrime.securesms-aWRzcGlzcG9wZA==/base.apk
-```
-
-The output will tell you where the Signal APK is located in your device. (In this example the path is `/data/app/org.thoughtcrime.securesms-aWRzcGlzcG9wZA==/base.apk`)
-
-Now using this information, pull the APK from your device to the `reproducible-signal/apk-from-google-play-store` directory you created before:
-```
-user@host:$ adb pull \
-              /data/app/org.thoughtcrime.securesms-aWRzcGlzcG9wZA==/base.apk \
-              ~/reproducible-signal/apk-from-google-play-store/Signal-3.15.2.apk
-```
-
-We will use this APK in the final part when we compare it with the self-built APK from GitHub.
-
-## Identifying the ABI
-
-Since v4.37.0, the APKs have been split by ABI, the CPU architecture of the target device. Google play will serve the correct one to you for your device.
-
-To identify which ABIs the google play APK supports, we can look inside the APK, which is just a zip file:
-
-```
-user@host:$ unzip -l ~/reproducible-signal/apk-from-google-play-store/Signal-*.apk | grep lib/
-```
-
-Example:
-
-```
-  1214348  00-00-1980 00:00   lib/armeabi-v7a/libconscrypt_jni.so
-   151980  00-00-1980 00:00   lib/armeabi-v7a/libcurve25519.so
-  4164320  00-00-1980 00:00   lib/armeabi-v7a/libjingle_peerconnection_so.so
-    13948  00-00-1980 00:00   lib/armeabi-v7a/libnative-utils.so
-  2357812  00-00-1980 00:00   lib/armeabi-v7a/libsqlcipher.so
-```
-
-As there is just one sub directory of `lib/` called `armeabi-v7a`, that is your ABI. Make a note of that for later. If you see more than one subdirectory of `lib/`:
-
-```
-  1214348  00-00-1980 00:00   lib/armeabi-v7a/libconscrypt_jni.so
-   151980  00-00-1980 00:00   lib/armeabi-v7a/libcurve25519.so
-  4164320  00-00-1980 00:00   lib/armeabi-v7a/libjingle_peerconnection_so.so
-    13948  00-00-1980 00:00   lib/armeabi-v7a/libnative-utils.so
-  2357812  00-00-1980 00:00   lib/armeabi-v7a/libsqlcipher.so
-  2111376  00-00-1980 00:00   lib/x86/libconscrypt_jni.so
-   201056  00-00-1980 00:00   lib/x86/libcurve25519.so
-  7303888  00-00-1980 00:00   lib/x86/libjingle_peerconnection_so.so
-     5596  00-00-1980 00:00   lib/x86/libnative-utils.so
-  3977636  00-00-1980 00:00   lib/x86/libsqlcipher.so
-```
-
-Then that means you have the `universal` APK.
-
-## Installing Docker
-
-Install Docker by following the instructions for your platform at https://docs.docker.com/engine/installation/
-
-Your platform might also have its own preferred way of installing Docker. E.g. Ubuntu has its own Docker package (`docker.io`) if you do not want to follow Docker's instructions.
-
-In the following sections we will assume that your Docker installation works without issues. So after installing, please make sure that everything is running smoothly before continuing.
-
-
-## Building a Docker image for Signal
-
-#### Grabbing the `Dockerfile`
-
-First you will need the `Dockerfile` for Signal Android. It comes bundled with Signal's source code. The `Dockerfile` contains instructions on how to automatically build a Docker image for Signal. You just need to run it and it builds itself.
-
-Download the `Dockerfile` to the `image-build-context` directory.
-
-```
-user@host:$ wget -O ~/reproducible-signal/image-build-context/Dockerfile_v3.15.2 \
-                    https://raw.githubusercontent.com/signalapp/Signal-Android/v3.15.2/Dockerfile
-```
-
-Note that the `Dockerfile` is specific to the Signal version you want to compare to. Again you have to adjust the URL above to match the right version. (Though sometimes the file might not be up to date, see the [Troubleshooting section](#troubleshooting))
-
-
-#### Building the image
-
-Now we have everything we need to build the Docker image for Signal. Go to the `image-build-context` directory:
-
-```
-user@host:$ cd ~/reproducible-signal/image-build-context
-```
-
-And list the contents.
-```
-user@host:$ ls
-```
-The output should look like this:
-```
-Dockerfile_v3.15.2
-```
-
-Now in this directory build the image using `Dockerfile_v3.15.2`:
-```
-user@host:$ docker build --file Dockerfile_v3.15.2 --tag signal-android .
-```
-
-(Note that there is a dot at the end of that command!)
-
-Wait a few years for the build to finish... :construction_worker:
-
-(Depending on your computer and network connection, this may take several minutes.)
-
-:calendar: :sleeping:
-
-After the build has finished, you may wish to list all your Docker images to see that it's really there:
-```
-user@host:$ docker images
-```
-Output should look something like this:
-```
-REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
-signal-android      latest              c6b84450b896        46 seconds ago      2.94 GB
-ubuntu              14.04.3             8693db7e8a00        9 weeks ago         187.9 MB
-```
-
-
-## Compiling Signal inside a container
-
-Next we will run a container of the image we just built, grab Signal's source code and compile Signal.
-
-First go to the `reproducible-signal` directory:
-
-```
-user@host:$ cd ~/reproducible-signal/
-```
-
-To run a new ephemeral container with an interactive terminal session execute the following long command:
-```
-user@host:$ docker run \
-              --name signal \
-              --rm \
-              --interactive \
-              --tty \
-              --volume $(pwd)/apk-from-google-play-store:/signal-build/apk-from-google-play-store \
-              --workdir /signal-build \
-              signal-android
-```
-Now you are inside the container.
-
-Grab Signal's source code from GitHub and go to the repository directory:
-```
-root@container:# git clone https://github.com/signalapp/Signal-Android.git
-root@container:# cd Signal-Android
-```
-
-Before you can compile, you **must** ensure that you are at the right commit. In other words you **must** checkout the version you wish to verify (here we are verifying 3.15.2):
-```
-root@container:# git checkout --quiet v3.15.2
-```
-
-Now you may compile the release APK by running:
-```
-root@container:# ./gradlew clean assemblePlayRelease --exclude-task signProductionPlayRelease
-```
-This will take a few minutes :sleeping:
-
-
-#### Checking if the APKs match
-
-After the build has completed successfully we can finally compare if the APKs match. For the comparison we need of course the Google Play Store version of Signal APK which you copied to the `apk-from-google-play-store` directory in the beginning of this guide. Because we used that directory as a `--volume` parameter for our container, we can see all the files in that directory within our container.
-
-So now we can compare the APKs using the `apkdiff.py` tool.
-
-The above build step produced several APKs, one for each supported ABI and one universal one. You will need to determine the correct APK to compare.
-
-Currently, the most common ABI is `armeabi-v7a`. Other options at this time include `x86` and `universal`. In the future it will also include 64-bit options, such as `x86_64` and `arm64-v8a`.
-
-See [Identifying the ABI](#identifying-the-abi) above if you don't know the ABI of your play store APK.
-
-Once you have determined the ABI, add an `abi` environment variable. For example, suppose we determine that `armeabi-v7a` is the ABI google play has served:
-
-```
-root@container:# export abi=armeabi-v7a
-```
-
-And the diff script to compare:
-```
-root@container:# python3 apkdiff/apkdiff.py \
-                   build/outputs/apk/play/release/*play-$abi-release-unsigned*.apk \
-                   ../apk-from-google-play-store/Signal-3.15.2.apk
-```
-Output:
-```
-APKs match!
-```
-
-If you get `APKs match!`, you have successfully verified that the Google Play release matches with your own self-built version of Signal. Congratulations! Your APKs are a match made in heaven! :sparkles:
-
-If you get `APKs don't match!`, you did something wrong in the previous steps. See the [Troubleshooting section](#troubleshooting) for more info.
-
-
-## Comparing next time
-
-If the build environment (i.e. `Dockerfile`) has not changed, you don't need to build the image again to verify a newer APK. You can just [run the container again](#compiling-signal-inside-a-container).
-
-
-## Troubleshooting
-
-If you cannot get things to work, please do not open an issue or comment on an existing issue at GitHub. Instead, ask for help at https://community.signalusers.org/c/development
-
-Some common issues why things may not work:
-- some pinned packages in the `Dockerfile` are not available anymore and building of the Docker image fails
-- the Android packages in the Docker image are outdated and compiling Signal fails
-- you built the Docker image with a wrong version of the `Dockerfile`
-- you didn't checkout the correct Signal version tag with Git before compiling
-- the ABI you selected is not the correct ABI, particularly if you see an error along the lines of `Sorted manifests don't match, lib/x86/libcurve25519.so vs lib/armeabi-v7a/libcurve25519.so`.
-- this guide is outdated
-- you are in a dream
-- if you run into this issue: https://issuetracker.google.com/issues/110237303 try to add `resources.arsc` to the list of ignored files and compare again

app/build.gradle

@@ -2,31 +2,17 @@ import org.signal.signing.ApkSignerUtil
 
 import java.security.MessageDigest
 
-buildscript {
-    repositories {
-        google()
-        maven {
-            url "https://repo1.maven.org/maven2"
-        }
-        jcenter {
-            content {
-                includeVersion 'org.jetbrains.trove4j', 'trove4j', '20160824'
-            }
-        }
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.1'
-        classpath 'androidx.navigation:navigation-safe-args-gradle-plugin:2.1.0'
-        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.10'
-    }
-}
-
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-kapt'
 apply plugin: 'com.google.protobuf'
 apply plugin: 'androidx.navigation.safeargs'
 apply plugin: 'witness'
+apply plugin: 'org.jlleitschuh.gradle.ktlint'
 apply from: 'translations.gradle'
 apply from: 'witness-verifications.gradle'
+apply plugin: 'org.jetbrains.kotlin.android'
+apply plugin: 'app.cash.exhaustive'
 
 repositories {
     maven {
@@ -35,24 +21,12 @@ repositories {
             includeGroupByRegex "com\\.github\\.chrisbanes.*"
         }
     }
-    maven {
-        url "https://raw.github.com/signalapp/maven/master/shortcutbadger/releases/"
-        content {
-            includeGroupByRegex "me\\.leolin.*"
-        }
-    }
     maven {
         url "https://raw.github.com/signalapp/maven/master/circular-progress-button/releases/"
         content {
             includeGroupByRegex "com\\.github\\.dmytrodanylyk\\.circular-progress-button\\.*"
         }
     }
-    maven {
-        url "https://raw.github.com/signalapp/maven/master/sqlcipher/release/"
-        content {
-            includeGroupByRegex "org\\.signal.*"
-        }
-    }
     maven { // textdrawable
         url 'https://dl.bintray.com/amulyakhare/maven'
         content {
@@ -63,6 +37,9 @@ repositories {
     mavenCentral()
     jcenter()
     mavenLocal()
+    maven {
+        url "https://dl.cloudsmith.io/qxAgwaeEE1vN8aLU/mobilecoin/mobilecoin/maven/"
+    }
 }
 
 protobuf {
@@ -80,38 +57,59 @@ protobuf {
     }
 }
 
-def canonicalVersionCode = 625
+def canonicalVersionCode = 871
-def canonicalVersionName = "4.59.5"
+def canonicalVersionName = "5.15.4"
 
-def postFixSize = 10
+def postFixSize = 100
 def abiPostFix = ['universal'   : 0,
                   'armeabi-v7a' : 1,
                   'arm64-v8a'   : 2,
                   'x86'         : 3,
                   'x86_64'      : 4]
 
+def keystores = [ 'debug'  : loadKeystoreProperties('keystore.debug.properties') ]
+
 android {
-    flavorDimensions "none"
+    buildToolsVersion BUILD_TOOL_VERSION
-    compileSdkVersion 28
+    compileSdkVersion COMPILE_SDK
-    buildToolsVersion '28.0.3'
+
+    flavorDimensions 'distribution', 'environment'
     useLibrary 'org.apache.http.legacy'
 
+    kotlinOptions {
+        jvmTarget = "1.8"
+        freeCompilerArgs = ["-Xallow-result-return-type"]
+    }
+
     dexOptions {
         javaMaxHeapSize "4g"
     }
 
+    signingConfigs {
+        if (keystores.debug != null) {
+            debug {
+                storeFile file("${project.rootDir}/${keystores.debug.storeFile}")
+                storePassword keystores.debug.storePassword
+                keyAlias keystores.debug.keyAlias
+                keyPassword keystores.debug.keyPassword
+            }
+        }
+    }
+
     defaultConfig {
         versionCode canonicalVersionCode * postFixSize
         versionName canonicalVersionName
 
-        minSdkVersion 19
+        minSdkVersion MINIMUM_SDK
-        targetSdkVersion 28
+        targetSdkVersion TARGET_SDK
+
         multiDexEnabled true
 
         vectorDrawables.useSupportLibrary = true
         project.ext.set("archivesBaseName", "Signal");
 
         buildConfigField "long", "BUILD_TIMESTAMP", getLastCommitTimestamp() + "L"
+        buildConfigField "String", "GIT_HASH", "\"${getGitHash()}\""
         buildConfigField "String", "SIGNAL_URL", "\"https://textsecure-service.whispersystems.org\""
         buildConfigField "String", "STORAGE_URL", "\"https://storage.signal.org\""
         buildConfigField "String", "SIGNAL_CDN_URL", "\"https://cdn.signal.org\""
@@ -119,16 +117,29 @@ android {
         buildConfigField "String", "SIGNAL_CONTACT_DISCOVERY_URL", "\"https://api.directory.signal.org\""
         buildConfigField "String", "SIGNAL_SERVICE_STATUS_URL", "\"uptime.signal.org\""
         buildConfigField "String", "SIGNAL_KEY_BACKUP_URL", "\"https://api.backup.signal.org\""
+        buildConfigField "String", "SIGNAL_SFU_URL", "\"https://sfu.voip.signal.org\""
+        buildConfigField "String[]", "SIGNAL_SFU_INTERNAL_NAMES", "new String[]{\"Test\", \"Staging\"}"
+        buildConfigField "String[]", "SIGNAL_SFU_INTERNAL_URLS", "new String[]{\"https://sfu.test.voip.signal.org\", \"https://sfu.staging.voip.signal.org\"}"
         buildConfigField "String", "CONTENT_PROXY_HOST", "\"contentproxy.signal.org\""
         buildConfigField "int", "CONTENT_PROXY_PORT", "443"
         buildConfigField "String", "SIGNAL_AGENT", "\"OWA\""
-        buildConfigField "String", "CDS_MRENCLAVE", "\"cd6cfc342937b23b1bdd3bbf9721aa5615ac9ff50a75c5527d441cd3276826c9\""
+        buildConfigField "String", "CDS_MRENCLAVE", "\"c98e00a4e3ff977a56afefe7362a27e4961e4f19e211febfbb19b897e6b80b15\""
-        buildConfigField "String", "KBS_ENCLAVE_NAME", "\"fe7c1bfae98f9b073d220366ea31163ee82f6d04bead774f71ca8e5c40847bfe\""
+        buildConfigField "KbsEnclave", "KBS_ENCLAVE", "new KbsEnclave(\"fe7c1bfae98f9b073d220366ea31163ee82f6d04bead774f71ca8e5c40847bfe\"," +
-        buildConfigField "String", "KBS_MRENCLAVE", "\"a3baab19ef6ce6f34ab9ebb25ba722725ae44a8872dc0ff08ad6d83a9489de87\""
+                                                                     "\"fe7c1bfae98f9b073d220366ea31163ee82f6d04bead774f71ca8e5c40847bfe\", " +
+                                                                     "\"a3baab19ef6ce6f34ab9ebb25ba722725ae44a8872dc0ff08ad6d83a9489de87\")";
+        buildConfigField "KbsEnclave[]", "KBS_FALLBACKS", "new KbsEnclave[0]"
         buildConfigField "String", "UNIDENTIFIED_SENDER_TRUST_ROOT", "\"BXu6QIKVz5MA8gstzfOgRQGqyLqOwNKHL6INkv3IHWMF\""
-        buildConfigField "String", "ZKGROUP_SERVER_PUBLIC_PARAMS", "\"\""
+        buildConfigField "String", "ZKGROUP_SERVER_PUBLIC_PARAMS", "\"AMhf5ywVwITZMsff/eCyudZx9JDmkkkbV6PInzG4p8x3VqVJSFiMvnvlEKWuRob/1eaIetR31IYeAbm0NdOuHH8Qi+Rexi1wLlpzIo1gstHWBfZzy1+qHRV5A4TqPp15YzBPm0WSggW6PbSn+F4lf57VCnHF7p8SvzAA2ZZJPYJURt8X7bbg+H3i+PEjH9DXItNEqs2sNcug37xZQDLm7X0=\""
         buildConfigField "String[]", "LANGUAGES", "new String[]{\"" + autoResConfig().collect { s -> s.replace('-r', '_') }.join('", "') + '"}'
         buildConfigField "int", "CANONICAL_VERSION_CODE", "$canonicalVersionCode"
+        buildConfigField "String", "DEFAULT_CURRENCIES", "\"EUR,AUD,GBP,CAD,CNY\""
+        buildConfigField "int[]", "MOBILE_COIN_REGIONS", "new int[]{44}"
+        buildConfigField "String", "GIPHY_API_KEY", "\"3o6ZsYH6U6Eri53TXy\""
+        buildConfigField "String", "RECAPTCHA_PROOF_URL", "\"https://signalcaptchas.org/challenge/generate.html\""
+
+        buildConfigField "String", "BUILD_DISTRIBUTION_TYPE", "\"unset\""
+        buildConfigField "String", "BUILD_ENVIRONMENT_TYPE", "\"unset\""
+        buildConfigField "String", "BUILD_VARIANT_TYPE", "\"unset\""
 
         ndk {
             abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
@@ -149,8 +160,9 @@ android {
     }
 
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
+        coreLibraryDesugaringEnabled true
-        targetCompatibility JavaVersion.VERSION_1_8
+        sourceCompatibility JAVA_VERSION
+        targetCompatibility JAVA_VERSION
     }
 
     packagingOptions {
@@ -161,11 +173,16 @@ android {
         exclude 'META-INF/LICENSE'
         exclude 'META-INF/NOTICE'
         exclude 'META-INF/proguard/androidx-annotations.pro'
-        exclude 'lib/*/libzkgroup.so' // TODO: GV2 Remove line to include .so when used
+        exclude '/org/spongycastle/x509/CertPathReviewerMessages.properties'
+        exclude '/org/spongycastle/x509/CertPathReviewerMessages_de.properties'
     }
 
     buildTypes {
         debug {
+            if (keystores['debug'] != null) {
+                signingConfig signingConfigs.debug
+            }
+            isDefault true
             minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt'),
                     'proguard/proguard-firebase-messaging.pro',
@@ -188,9 +205,86 @@ android {
                     'proguard/proguard.cfg'
             testProguardFiles 'proguard/proguard-automation.pro',
                     'proguard/proguard.cfg'
+
+            buildConfigField "String", "BUILD_VARIANT_TYPE", "\"Debug\""
         }
-        staging {
+        flipper {
             initWith debug
+            isDefault false
+            minifyEnabled false
+            matchingFallbacks = ['debug']
+            buildConfigField "String", "BUILD_VARIANT_TYPE", "\"Flipper\""
+        }
+        release {
+            minifyEnabled true
+            proguardFiles = buildTypes.debug.proguardFiles
+            buildConfigField "String", "BUILD_VARIANT_TYPE", "\"Release\""
+        }
+        perf {
+            initWith debug
+            isDefault false
+            debuggable false
+            matchingFallbacks = ['debug']
+            buildConfigField "String", "BUILD_VARIANT_TYPE", "\"Perf\""
+        }
+        mock {
+            initWith debug
+            isDefault false
+            minifyEnabled false
+            matchingFallbacks = ['debug']
+            buildConfigField "String", "BUILD_VARIANT_TYPE", "\"Mock\""
+        }
+    }
+
+    productFlavors {
+        play {
+            dimension 'distribution'
+            isDefault true
+            ext.websiteUpdateUrl = "null"
+            buildConfigField "boolean", "PLAY_STORE_DISABLED", "false"
+            buildConfigField "String", "NOPLAY_UPDATE_URL", "$ext.websiteUpdateUrl"
+            buildConfigField "String", "BUILD_DISTRIBUTION_TYPE", "\"play\""
+        }
+
+        website {
+            dimension 'distribution'
+            ext.websiteUpdateUrl = "https://updates.signal.org/android"
+            buildConfigField "boolean", "PLAY_STORE_DISABLED", "true"
+            buildConfigField "String", "NOPLAY_UPDATE_URL", "\"$ext.websiteUpdateUrl\""
+            buildConfigField "String", "BUILD_DISTRIBUTION_TYPE", "\"website\""
+        }
+
+        internal {
+            dimension 'distribution'
+            ext.websiteUpdateUrl = "null"
+            buildConfigField "boolean", "PLAY_STORE_DISABLED", "false"
+            buildConfigField "String", "NOPLAY_UPDATE_URL", "$ext.websiteUpdateUrl"
+            buildConfigField "String", "BUILD_DISTRIBUTION_TYPE", "\"internal\""
+        }
+
+        study {
+            dimension 'distribution'
+
+            applicationIdSuffix ".study"
+            ext.websiteUpdateUrl = "null"
+            buildConfigField "boolean", "PLAY_STORE_DISABLED", "false"
+            buildConfigField "String", "NOPLAY_UPDATE_URL", "$ext.websiteUpdateUrl"
+            buildConfigField "String", "BUILD_DISTRIBUTION_TYPE", "\"study\""
+        }
+
+        prod {
+            dimension 'environment'
+
+            isDefault true
+
+            buildConfigField "String", "MOBILE_COIN_ENVIRONMENT", "\"mainnet\""
+            buildConfigField "String", "BUILD_ENVIRONMENT_TYPE", "\"Prod\""
+        }
+
+        staging {
+            dimension 'environment'
+
+            applicationIdSuffix ".staging"
 
             buildConfigField "String", "SIGNAL_URL", "\"https://textsecure-service-staging.whispersystems.org\""
             buildConfigField "String", "STORAGE_URL", "\"https://storage-staging.signal.org\""
@@ -198,34 +292,17 @@ android {
             buildConfigField "String", "SIGNAL_CDN2_URL", "\"https://cdn2-staging.signal.org\""
             buildConfigField "String", "SIGNAL_CONTACT_DISCOVERY_URL", "\"https://api-staging.directory.signal.org\""
             buildConfigField "String", "SIGNAL_KEY_BACKUP_URL", "\"https://api-staging.backup.signal.org\""
-            buildConfigField "String", "CDS_MRENCLAVE", "\"ba4ebb438bc07713819ee6c98d94037747006d7df63fc9e44d2d6f1fec962a79\""
+            buildConfigField "String", "CDS_MRENCLAVE", "\"c98e00a4e3ff977a56afefe7362a27e4961e4f19e211febfbb19b897e6b80b15\""
-            buildConfigField "String", "KBS_ENCLAVE_NAME", "\"823a3b2c037ff0cbe305cc48928cfcc97c9ed4a8ca6d49af6f7d6981fb60a4e9\""
+            buildConfigField "KbsEnclave", "KBS_ENCLAVE", "new KbsEnclave(\"823a3b2c037ff0cbe305cc48928cfcc97c9ed4a8ca6d49af6f7d6981fb60a4e9\", " +
+                                                                         "\"51a56084c0b21c6b8f62b1bc792ec9bedac4c7c3964bb08ddcab868158c09982\", " +
+                                                                         "\"a3baab19ef6ce6f34ab9ebb25ba722725ae44a8872dc0ff08ad6d83a9489de87\")"
+            buildConfigField "KbsEnclave[]", "KBS_FALLBACKS", "new KbsEnclave[0]"
             buildConfigField "String", "UNIDENTIFIED_SENDER_TRUST_ROOT", "\"BbqY1DzohE4NUZoVF+L18oUPrK3kILllLEJh2UnPSsEx\""
-            buildConfigField "String", "ZKGROUP_SERVER_PUBLIC_PARAMS", "\"\""
+            buildConfigField "String", "ZKGROUP_SERVER_PUBLIC_PARAMS", "\"ABSY21VckQcbSXVNCGRYJcfWHiAMZmpTtTELcDmxgdFbtp/bWsSxZdMKzfCp8rvIs8ocCU3B37fT3r4Mi5qAemeGeR2X+/YmOGR5ofui7tD5mDQfstAI9i+4WpMtIe8KC3wU5w3Inq3uNWVmoGtpKndsNfwJrCg0Hd9zmObhypUnSkfYn2ooMOOnBpfdanRtrvetZUayDMSC5iSRcXKpdls=\""
-        }
+            buildConfigField "String", "MOBILE_COIN_ENVIRONMENT", "\"testnet\""
-        flipper {
+            buildConfigField "String", "RECAPTCHA_PROOF_URL", "\"https://signalcaptchas.org/staging/challenge/generate.html\""
-            initWith debug
-            minifyEnabled false
-        }
-        release {
-            minifyEnabled true
-            proguardFiles = buildTypes.debug.proguardFiles
-        }
-    }
 
-    productFlavors {
+            buildConfigField "String", "BUILD_ENVIRONMENT_TYPE", "\"Staging\""
-        play {
-            dimension "none"
-            ext.websiteUpdateUrl = "null"
-            buildConfigField "boolean", "PLAY_STORE_DISABLED", "false"
-            buildConfigField "String", "NOPLAY_UPDATE_URL", "$ext.websiteUpdateUrl"
-        }
-
-        website {
-            dimension "none"
-            ext.websiteUpdateUrl = "https://updates.signal.org/android"
-            buildConfigField "boolean", "PLAY_STORE_DISABLED", "true"
-            buildConfigField "String", "NOPLAY_UPDATE_URL", "\"$ext.websiteUpdateUrl\""
         }
     }
 
@@ -241,6 +318,18 @@ android {
         }
     }
 
+    android.variantFilter { variant ->
+        def distribution = variant.getFlavors().get(0).name
+        def environment  = variant.getFlavors().get(1).name
+        def buildType    = variant.buildType.name
+
+        if (distribution == 'study' && buildType != 'perf' && buildType != 'mock') {
+            variant.setIgnore(true)
+        } else if (distribution != 'study' && buildType == 'mock') {
+            variant.setIgnore(true)
+        }
+    }
+
     lintOptions {
         abortOnError true
         baseline file("lint-baseline.xml")
@@ -255,29 +344,38 @@ android {
 }
 
 dependencies {
-    implementation 'androidx.appcompat:appcompat:1.1.0-beta01'
+    implementation 'androidx.fragment:fragment-ktx:1.2.5'
-    implementation 'androidx.recyclerview:recyclerview:1.0.0'
+    lintChecks project(':lintchecks')
-    implementation 'com.google.android.material:material:1.0.0'
+
+    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'
+
+    implementation ('androidx.appcompat:appcompat:1.2.0') {
+        force = true
+    }
+    implementation 'androidx.recyclerview:recyclerview:1.1.0'
+    implementation 'com.google.android.material:material:1.3.0'
     implementation 'androidx.legacy:legacy-support-v13:1.0.0'
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'androidx.preference:preference:1.0.0'
     implementation 'androidx.legacy:legacy-preference-v14:1.0.0'
     implementation 'androidx.gridlayout:gridlayout:1.0.0'
     implementation 'androidx.exifinterface:exifinterface:1.0.0'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
     implementation 'androidx.multidex:multidex:2.0.1'
     implementation 'androidx.navigation:navigation-fragment:2.1.0'
     implementation 'androidx.navigation:navigation-ui:2.1.0'
     implementation 'androidx.lifecycle:lifecycle-extensions:2.1.0'
     implementation 'androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0-alpha05'
     implementation 'androidx.lifecycle:lifecycle-common-java8:2.1.0'
-    implementation "androidx.camera:camera-core:1.0.0-beta01"
+    implementation "androidx.camera:camera-core:1.0.0-beta11"
-    implementation "androidx.camera:camera-camera2:1.0.0-beta01"
+    implementation "androidx.camera:camera-camera2:1.0.0-beta11"
-    implementation "androidx.camera:camera-lifecycle:1.0.0-beta01"
+    implementation "androidx.camera:camera-lifecycle:1.0.0-beta11"
+    implementation "androidx.camera:camera-view:1.0.0-alpha18"
     implementation "androidx.concurrent:concurrent-futures:1.0.0"
     implementation "androidx.autofill:autofill:1.0.0"
+    implementation "androidx.biometric:biometric:1.1.0"
 
-    implementation('com.google.firebase:firebase-messaging:17.3.4') {
+    implementation ('com.google.firebase:firebase-messaging:22.0.0') {
         exclude group: 'com.google.firebase', module: 'firebase-core'
         exclude group: 'com.google.firebase', module: 'firebase-analytics'
         exclude group: 'com.google.firebase', module: 'firebase-measurement-connector'
@@ -288,25 +386,37 @@ dependencies {
 
     implementation 'com.google.android.exoplayer:exoplayer-core:2.9.1'
     implementation 'com.google.android.exoplayer:exoplayer-ui:2.9.1'
+    implementation 'com.google.android.exoplayer:extension-mediasession:2.9.1'
 
     implementation 'org.conscrypt:conscrypt-android:2.0.0'
     implementation 'org.signal:aesgcmprovider:0.0.3'
 
     implementation project(':libsignal-service')
-    implementation 'org.signal:zkgroup-android:0.4.1'
+    implementation project(':paging')
+    implementation project(':core-util')
+    implementation project(':video')
+    implementation project(':device-transfer')
+
+    implementation 'org.signal:zkgroup-android:0.7.0'
+    implementation 'org.whispersystems:signal-client-android:0.8.0'
+    implementation 'com.google.protobuf:protobuf-javalite:3.10.0'
+
+    implementation('com.mobilecoin:android-sdk:1.1.0') {
+        exclude group: 'com.google.protobuf'
+    }
 
     implementation 'org.signal:argon2:13.1@aar'
 
-    implementation 'org.signal:ringrtc-android:1.3.1'
+    implementation 'org.signal:ringrtc-android:2.10.1.1'
 
-    implementation "me.leolin:ShortcutBadger:1.1.16"
+    implementation "me.leolin:ShortcutBadger:1.1.22"
     implementation 'se.emilsjolander:stickylistheaders:2.7.0'
     implementation 'com.jpardogo.materialtabstrip:library:1.0.9'
     implementation 'org.apache.httpcomponents:httpclient-android:4.3.5'
     implementation 'com.github.chrisbanes:PhotoView:2.1.3'
     implementation 'com.github.bumptech.glide:glide:4.11.0'
-    annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'
+    kapt 'com.github.bumptech.glide:compiler:4.11.0'
-    annotationProcessor 'androidx.annotation:annotation:1.1.0'
+    kapt 'androidx.annotation:annotation:1.1.0'
     implementation 'com.makeramen:roundedimageview:2.1.0'
     implementation 'com.pnikosis:materialish-progress:1.5'
     implementation 'org.greenrobot:eventbus:3.0.0'
@@ -335,43 +445,49 @@ dependencies {
         exclude group: 'com.android.support', module: 'recyclerview-v7'
     }
 
-    implementation 'com.airbnb.android:lottie:3.0.7'
+    implementation 'com.airbnb.android:lottie:3.6.0'
 
     implementation 'com.codewaves.stickyheadergrid:stickyheadergrid:0.9.4'
     implementation 'com.github.dmytrodanylyk.circular-progress-button:library:1.1.3-S2'
-    implementation 'org.signal:android-database-sqlcipher:3.5.9-S3'
+
+    implementation "net.zetetic:android-database-sqlcipher:4.4.3"
+    implementation "androidx.sqlite:sqlite:2.1.0"
+
     implementation ('com.googlecode.ez-vcard:ez-vcard:0.9.11') {
         exclude group: 'com.fasterxml.jackson.core'
         exclude group: 'org.freemarker'
     }
     implementation 'dnsjava:dnsjava:2.1.9'
 
-    flipperImplementation 'com.facebook.flipper:flipper:0.32.2'
+    flipperImplementation 'com.facebook.flipper:flipper:0.91.0'
-    flipperImplementation 'com.facebook.soloader:soloader:0.8.2'
+    flipperImplementation 'com.facebook.soloader:soloader:0.10.1'
 
     testImplementation 'junit:junit:4.12'
     testImplementation 'org.assertj:assertj-core:3.11.1'
-    testImplementation 'org.mockito:mockito-core:1.9.5'
+    testImplementation 'org.mockito:mockito-core:2.8.9'
-    testImplementation 'org.powermock:powermock-api-mockito:1.6.1'
+    testImplementation 'org.powermock:powermock-api-mockito2:1.7.4'
-    testImplementation 'org.powermock:powermock-module-junit4:1.6.1'
+    testImplementation 'org.powermock:powermock-module-junit4:1.7.4'
-    testImplementation 'org.powermock:powermock-module-junit4-rule:1.6.1'
+    testImplementation 'org.powermock:powermock-module-junit4-rule:1.7.4'
-    testImplementation 'org.powermock:powermock-classloading-xstream:1.6.1'
+    testImplementation 'org.powermock:powermock-classloading-xstream:1.7.4'
 
     testImplementation 'androidx.test:core:1.2.0'
-    testImplementation ('org.robolectric:robolectric:4.2') {
+    testImplementation ('org.robolectric:robolectric:4.4') {
         exclude group: 'com.google.protobuf', module: 'protobuf-java'
     }
-    testImplementation 'org.robolectric:shadows-multidex:4.2'
+    testImplementation 'org.robolectric:shadows-multidex:4.4'
+    testImplementation 'org.hamcrest:hamcrest:2.2'
 
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation "com.fasterxml.jackson.module:jackson-module-kotlin:2.12.0"
 }
 
 dependencyVerification {
-    configuration = '(play|website)(Debug|Release)RuntimeClasspath'
+    configuration = '(play|website)(Prod|Staging)(Debug|Release)RuntimeClasspath'
 }
 
-
 def assembleWebsiteDescriptor = { variant, file ->
     if (file.exists()) {
         MessageDigest md = MessageDigest.getInstance("SHA-256");
@@ -415,29 +531,29 @@ def signProductionRelease = { variant ->
 
 task signProductionPlayRelease {
     doLast {
-        signProductionRelease(android.applicationVariants.find { (it.name == 'playRelease') })
+        signProductionRelease(android.applicationVariants.find { (it.name == 'playProdRelease') })
+    }
+}
+
+task signProductionInternalRelease {
+    doLast {
+        signProductionRelease(android.applicationVariants.find { (it.name == 'internalProdRelease') })
     }
 }
 
 task signProductionWebsiteRelease {
     doLast {
-        def  variant       = android.applicationVariants.find { (it.name == 'websiteRelease') }
+        def  variant       = android.applicationVariants.find { (it.name == 'websiteProdRelease') }
         File signedRelease = signProductionRelease(variant).find { it.name.contains('universal') }
         assembleWebsiteDescriptor(variant, signedRelease)
     }
 }
 
-tasks.whenTaskAdded { task ->
-    if (task.name.equals("assemblePlayRelease")) {
-        task.finalizedBy signProductionPlayRelease
-    }
-
-    if (task.name.equals("assembleWebsiteRelease")) {
-        task.finalizedBy signProductionWebsiteRelease
-    }
-}
-
 def getLastCommitTimestamp() {
+    if (!(new File('.git').exists())) {
+        return System.currentTimeMillis().toString()
+    }
+
     new ByteArrayOutputStream().withStream { os ->
         def result = exec {
             executable = 'git'
@@ -448,3 +564,37 @@ def getLastCommitTimestamp() {
         return os.toString() + "000"
     }
 }
+
+def getGitHash() {
+    if (!(new File('.git').exists())) {
+        return "abcd1234"
+    }
+
+    def stdout = new ByteArrayOutputStream()
+    exec {
+        commandLine 'git', 'rev-parse', '--short', 'HEAD'
+        standardOutput = stdout
+    }
+    return stdout.toString().trim()
+}
+
+tasks.withType(Test) {
+    testLogging {
+        events "failed"
+        exceptionFormat "full"
+        showCauses true
+        showExceptions true
+        showStackTraces true
+    }
+}
+
+def loadKeystoreProperties(filename) {
+    def keystorePropertiesFile = file("${project.rootDir}/${filename}")
+    if (keystorePropertiesFile.exists()) {
+        def keystoreProperties = new Properties()
+        keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+        return keystoreProperties;
+    } else {
+        return null;
+    }
+}

app/lint.xml

@@ -1,15 +1,24 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <lint>
 
+    <!-- Wont pass lint or qa with a STOPSHIP in a comment -->
+    <issue id="StopShip" severity="fatal" />
+
     <!-- L10N errors -->
     <!-- This is a runtime crash so we don't want to ship with this. -->
     <issue id="StringFormatMatches" severity="error" />
 
     <!-- L10N warnings -->
-    <issue id="MissingTranslation" severity="warning" />
+    <issue id="MissingTranslation" severity="ignore" />
     <issue id="MissingQuantity" severity="warning" />
+    <issue id="MissingDefaultResource" severity="error">
+        <ignore path="*/res/values-*/strings.xml" /> <!-- Ignore for non-English, excludeNonTranslatables task will remove these -->
+    </issue>
     <issue id="ExtraTranslation" severity="warning" />
     <issue id="ImpliedQuantity" severity="warning" />
+    <issue id="TypographyDashes" severity="error" >
+        <ignore path="*/res/values-*/strings.xml" /> <!-- Ignore for non-English -->
+    </issue>
 
     <issue id="CanvasSize" severity="error" />
     <issue id="HardcodedText" severity="error" />
@@ -17,9 +26,19 @@
     <issue id="ButtonOrder" severity="error" />
     <issue id="ExtraTranslation" severity="warning" />
 
+    <!-- Custom lints -->
+    <issue id="LogNotSignal" severity="error" />
+    <issue id="LogNotAppSignal" severity="error" />
+    <issue id="LogTagInlined" severity="error" />
+
+    <issue id="AlertDialogBuilderUsage" severity="warning" />
+
     <issue id="RestrictedApi" severity="error">
         <ignore path="*/org/thoughtcrime/securesms/mediasend/camerax/VideoCapture.java" />
         <ignore path="*/org/thoughtcrime/securesms/mediasend/camerax/CameraXModule.java" />
+        <ignore path="*/org/thoughtcrime/securesms/conversation/*.java" />
+        <ignore path="*/org/thoughtcrime/securesms/lock/v2/CreateKbsPinViewModel.java" />
+        <ignore path="*/org/thoughtcrime/securesms/jobs/StickerPackDownloadJob.java" />
     </issue>
 
 </lint>

app/sampledata/contacts.json

@@ -0,0 +1,29 @@
+{
+  "data": [
+    {
+      "name": "Ottttooooooooo Ocataaaaaaaavius",
+      "number": "+1 (555) 555-5555",
+      "label": "Mobile"
+    },
+    {
+      "name": "Victor Von Doom Phd",
+      "number": "+1 (555) 123-4567",
+      "label": "Home"
+    },
+    {
+      "name": "Flash Thompson",
+      "number": "+1 (555) 435-1261",
+      "label": "Work"
+    },
+    {
+      "name": "Dr. Curtis Connors",
+      "number": "+1 (555) 992-1567",
+      "label": "Mobile"
+    },
+    {
+      "name": "Billy Russo",
+      "number": "+1 (555) 234-1516",
+      "label": "Mobile"
+    }
+  ]
+}

app/src/flipper/AndroidManifest.xml

@@ -5,5 +5,12 @@
 
     <application
         android:name=".FlipperApplicationContext"
-        tools:replace="android:name"/>
+        tools:replace="android:name">
+
+        <activity
+            android:name="com.facebook.flipper.android.diagnostics.FlipperDiagnosticActivity"
+            android:exported="true" />
+
+    </application>
+
 </manifest>

app/src/flipper/java/org/thoughtcrime/securesms/database/FlipperSqlCipherAdapter.java

@@ -1,5 +1,6 @@
 package org.thoughtcrime.securesms.database;
 
+import android.app.Application;
 import android.content.Context;
 import android.database.Cursor;
 import android.text.TextUtils;
@@ -14,14 +15,18 @@ import net.sqlcipher.DatabaseUtils;
 import net.sqlcipher.database.SQLiteDatabase;
 import net.sqlcipher.database.SQLiteStatement;
 
+import org.signal.core.util.logging.Log;
 import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper;
+import org.thoughtcrime.securesms.util.Hex;
 
+import java.lang.reflect.Field;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 
 /**
  * A lot of this code is taken from {@link com.facebook.flipper.plugins.databases.impl.SqliteDatabaseDriver}
@@ -29,13 +34,31 @@ import java.util.Map;
  */
 public class FlipperSqlCipherAdapter extends DatabaseDriver<FlipperSqlCipherAdapter.Descriptor> {
 
+  private static final String TAG = Log.tag(FlipperSqlCipherAdapter.class);
+
   public FlipperSqlCipherAdapter(Context context) {
     super(context);
   }
 
   @Override
   public List<Descriptor> getDatabases() {
-    return Collections.singletonList(new Descriptor(DatabaseFactory.getRawDatabase(getContext())));
+    try {
+      Field databaseHelperField = DatabaseFactory.class.getDeclaredField("databaseHelper");
+      databaseHelperField.setAccessible(true);
+
+      SignalDatabase mainOpenHelper       = Objects.requireNonNull((SQLCipherOpenHelper) databaseHelperField.get(DatabaseFactory.getInstance(getContext())));
+      SignalDatabase keyValueOpenHelper   = KeyValueDatabase.getInstance((Application) getContext());
+      SignalDatabase megaphoneOpenHelper  = MegaphoneDatabase.getInstance((Application) getContext());
+      SignalDatabase jobManagerOpenHelper = JobDatabase.getInstance((Application) getContext());
+
+      return Arrays.asList(new Descriptor(mainOpenHelper),
+                           new Descriptor(keyValueOpenHelper),
+                           new Descriptor(megaphoneOpenHelper),
+                           new Descriptor(jobManagerOpenHelper));
+    } catch (Exception e) {
+      Log.i(TAG, "Unable to use reflection to access raw database.", e);
+    }
+    return Collections.emptyList();
   }
 
   @Override
@@ -215,7 +238,12 @@ public class FlipperSqlCipherAdapter extends DatabaseDriver<FlipperSqlCipherAdap
       case Cursor.FIELD_TYPE_FLOAT:
         return cursor.getDouble(column);
       case Cursor.FIELD_TYPE_BLOB:
-        return cursor.getBlob(column);
+        byte[] blob = cursor.getBlob(column);
+        String bytes = blob != null ? "(blob) " + Hex.toStringCondensed(Arrays.copyOf(blob, Math.min(blob.length, 32))) : null;
+        if (bytes != null && bytes.length() == 32 && blob.length > 32) {
+          bytes += "...";
+        }
+        return bytes;
       case Cursor.FIELD_TYPE_STRING:
       default:
         return cursor.getString(column);
@@ -223,9 +251,9 @@ public class FlipperSqlCipherAdapter extends DatabaseDriver<FlipperSqlCipherAdap
   }
 
   static class Descriptor implements DatabaseDescriptor {
-    private final SQLCipherOpenHelper sqlCipherOpenHelper;
+    private final SignalDatabase sqlCipherOpenHelper;
 
-    Descriptor(@NonNull SQLCipherOpenHelper sqlCipherOpenHelper) {
+    Descriptor(@NonNull SignalDatabase sqlCipherOpenHelper) {
       this.sqlCipherOpenHelper = sqlCipherOpenHelper;
     }
 
@@ -235,11 +263,11 @@ public class FlipperSqlCipherAdapter extends DatabaseDriver<FlipperSqlCipherAdap
     }
 
     public @NonNull SQLiteDatabase getReadable() {
-      return sqlCipherOpenHelper.getReadableDatabase();
+      return sqlCipherOpenHelper.getSqlCipherDatabase();
     }
 
     public @NonNull SQLiteDatabase getWritable() {
-      return sqlCipherOpenHelper.getWritableDatabase();
+      return sqlCipherOpenHelper.getSqlCipherDatabase();
     }
   }
 }

app/src/flipper/res/values/strings.xml

@@ -1,4 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<resources>
-  <string name="app_name">Signal (Flipper)</string>
-</resources>

app/src/internal/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/core_red_shade"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

app/src/main/AndroidManifest.xml

@@ -3,9 +3,9 @@
           xmlns:tools="http://schemas.android.com/tools"
           package="org.thoughtcrime.securesms">
 
-    <uses-sdk tools:overrideLibrary="androidx.camera.core,androidx.camera.camera2,androidx.camera.lifecycle" />
+    <uses-sdk tools:overrideLibrary="androidx.camera.core,androidx.camera.camera2,androidx.camera.lifecycle,androidx.camera.view" />
 
-    <permission android:name="org.thoughtcrime.securesms.ACCESS_SECRETS"
+    <permission android:name="${applicationId}.ACCESS_SECRETS"
                 android:label="Access to TextSecure Secrets"
                 android:protectionLevel="signature" />
 
@@ -35,8 +35,10 @@
     <uses-permission android:name="android.permission.SEND_SMS"/>
     <uses-permission android:name="android.permission.WRITE_SMS"/>
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
+    <uses-permission android:name="android.permission.READ_PHONE_NUMBERS" />
 
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+                     android:maxSdkVersion="28" />
 
     <uses-permission android:name="android.permission.CAMERA" />
 
@@ -62,7 +64,6 @@
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
 
     <uses-permission android:name="android.permission.GET_ACCOUNTS" />
-    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
 
     <!-- So we can add a TextSecure 'Account' -->
     <uses-permission android:name="android.permission.READ_SYNC_SETTINGS" />
@@ -113,13 +114,22 @@
     <meta-data android:name="google_analytics_adid_collection_enabled" android:value="false" />
     <meta-data android:name="firebase_messaging_auto_init_enabled" android:value="false" />
 
-    <activity android:name="org.thoughtcrime.securesms.WebRtcCallActivity"
+    <activity android:name=".WebRtcCallActivity"
-              android:theme="@style/TextSecure.LightTheme.WebRTCCall"
+              android:theme="@style/TextSecure.DarkTheme.WebRTCCall"
               android:excludeFromRecents="true"
               android:screenOrientation="portrait"
-              android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|screenSize|fontScale"
+              android:supportsPictureInPicture="true"
+              android:windowSoftInputMode="stateAlwaysHidden"
+              android:configChanges="screenSize|smallestScreenSize|screenLayout|orientation"
+              android:taskAffinity=".calling"
               android:launchMode="singleTask"/>
 
+    <activity android:name=".messagerequests.CalleeMustAcceptMessageRequestActivity"
+              android:theme="@style/TextSecure.DarkNoActionBar"
+              android:screenOrientation="portrait"
+              android:noHistory="true"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
+
     <activity android:name=".InviteActivity"
               android:theme="@style/Signal.Light.NoActionBar.Invite"
               android:windowSoftInputMode="stateHidden"
@@ -127,7 +137,7 @@
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize">
         <meta-data
             android:name="android.support.PARENT_ACTIVITY"
-            android:value="org.thoughtcrime.securesms.MainActivity" />
+            android:value=".MainActivity" />
     </activity>
 
     <activity android:name=".PromptMmsActivity"
@@ -143,17 +153,28 @@
             <category android:name="android.intent.category.BROWSABLE" />
             <data android:scheme="tsdevice"/>
         </intent-filter>
+
+        <intent-filter>
+            <action android:name="android.intent.action.VIEW" />
+            <category android:name="android.intent.category.DEFAULT" />
+            <category android:name="android.intent.category.BROWSABLE" />
+            <data android:scheme="sgnl"
+                  android:host="linkdevice"/>
+        </intent-filter>
     </activity>
 
     <activity android:name=".preferences.MmsPreferencesActivity"
                android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
+    <activity android:name=".sharing.interstitial.ShareInterstitialActivity"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
+              android:windowSoftInputMode="adjustResize" />
+
     <activity android:name=".sharing.ShareActivity"
-              android:theme="@style/TextSecure.LightNoActionBar"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:excludeFromRecents="true"
               android:launchMode="singleTask"
               android:taskAffinity=""
-              android:noHistory="true"
               android:windowSoftInputMode="stateHidden"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize">
         <intent-filter>
@@ -182,7 +203,7 @@
     </activity>
 
     <activity android:name=".stickers.StickerPackPreviewActivity"
-              android:theme="@style/TextSecure.LightNoActionBar"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:launchMode="singleTask"
               android:noHistory="true"
               android:windowSoftInputMode="stateHidden"
@@ -221,6 +242,38 @@
 
     </activity-alias>
 
+    <activity android:name=".deeplinks.DeepLinkEntryActivity"
+              android:noHistory="true"
+              android:theme="@style/Signal.Transparent">
+
+        <intent-filter>
+            <action android:name="android.intent.action.VIEW" />
+            <category android:name="android.intent.category.DEFAULT" />
+            <category android:name="android.intent.category.BROWSABLE" />
+            <data android:scheme="sgnl"
+                  android:host="signal.group" />
+        </intent-filter>
+
+        <intent-filter android:autoVerify="true"
+                       tools:targetApi="23">
+            <action android:name="android.intent.action.VIEW" />
+            <category android:name="android.intent.category.DEFAULT" />
+            <category android:name="android.intent.category.BROWSABLE" />
+            <data android:scheme="https"
+                  android:host="signal.group"/>
+        </intent-filter>
+
+        <intent-filter>
+            <action android:name="android.intent.action.VIEW" />
+            <category android:name="android.intent.category.DEFAULT" />
+            <category android:name="android.intent.category.BROWSABLE" />
+            <data android:scheme="https"
+                  android:host="signal.tube" />
+            <data android:scheme="sgnl"
+                  android:host="signal.tube" />
+        </intent-filter>
+    </activity>
+
     <activity android:name=".conversation.ConversationActivity"
               android:windowSoftInputMode="stateUnchanged"
               android:launchMode="singleTask"
@@ -231,6 +284,11 @@
                 android:value="org.thoughtcrime.securesms.MainActivity" />
     </activity>
 
+    <activity android:name=".conversation.BubbleConversationActivity"
+              android:theme="@style/Signal.DayNight"
+              android:allowEmbedded="true"
+              android:resizeableActivity="true" />
+
     <activity android:name=".longmessage.LongMessageActivity" />
 
     <activity android:name=".conversation.ConversationPopupActivity"
@@ -241,19 +299,19 @@
               android:theme="@style/TextSecure.LightTheme.Popup"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize" />
 
-    <activity android:name=".MessageDetailsActivity"
+    <activity android:name=".messagedetails.MessageDetailsActivity"
-              android:label="@string/AndroidManifest__message_details"
               android:windowSoftInputMode="stateHidden"
               android:launchMode="singleTask"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
-    <activity android:name=".GroupCreateActivity"
+    <activity android:name=".groups.ui.invitesandrequests.ManagePendingAndRequestingMembersActivity"
-          android:windowSoftInputMode="stateVisible"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"
-          android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar" />
 
-    <activity android:name=".groups.ui.pendingmemberinvites.PendingMemberInvitesActivity"
+    <activity android:name=".recipients.ui.disappearingmessages.RecipientDisappearingMessagesActivity"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
-              android:theme="@style/TextSecure.LightNoActionBar" />
+              android:theme="@style/Signal.DayNight.NoActionBar"
+              android:windowSoftInputMode="adjustResize"/>
 
     <activity android:name=".DatabaseMigrationActivity"
               android:theme="@style/NoAnimation.Theme.AppCompat.Light.DarkActionBar"
@@ -268,7 +326,7 @@
       <activity android:name=".PassphraseCreateActivity"
               android:label="@string/AndroidManifest__create_passphrase"
               android:windowSoftInputMode="stateUnchanged"
-              android:theme="@style/TextSecure.LightNoActionBar"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:launchMode="singleTask"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
@@ -278,7 +336,7 @@
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".NewConversationActivity"
-              android:theme="@style/TextSecure.LightNoActionBar"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:windowSoftInputMode="stateAlwaysVisible"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
@@ -288,7 +346,7 @@
           android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".giph.ui.GiphyActivity"
-              android:theme="@style/TextSecure.LightNoActionBar"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:windowSoftInputMode="stateHidden"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
@@ -305,14 +363,43 @@
     <activity android:name=".VerifyIdentityActivity"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
-    <activity android:name=".ApplicationPreferencesActivity"
+    <activity android:name=".components.settings.app.AppSettingsActivity"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize">
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
+              android:theme="@style/Signal.DayNight.NoActionBar"
+              android:windowSoftInputMode="adjustResize">
         <intent-filter>
             <action android:name="android.intent.action.MAIN" />
             <category android:name="android.intent.category.NOTIFICATION_PREFERENCES" />
         </intent-filter>
     </activity>
 
+        <activity android:name=".components.settings.conversation.ConversationSettingsActivity"
+            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
+            android:theme="@style/Signal.DayNight.ConversationSettings"
+            android:windowSoftInputMode="stateAlwaysHidden">
+        </activity>
+
+
+        <activity android:name=".wallpaper.ChatWallpaperActivity"
+                  android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
+                  android:windowSoftInputMode="stateAlwaysHidden">
+        </activity>
+
+        <activity android:name=".wallpaper.ChatWallpaperPreviewActivity"
+            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
+            android:windowSoftInputMode="stateAlwaysHidden">
+        </activity>
+
+        <activity android:name=".devicetransfer.olddevice.OldDeviceTransferActivity"
+            android:theme="@style/TextSecure.LightRegistrationTheme"
+            android:launchMode="singleTask"
+            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
+
+        <activity android:name=".devicetransfer.olddevice.OldDeviceExitActivity"
+            android:noHistory="true"
+            android:excludeFromRecents="true"
+            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
+
     <activity android:name=".registration.RegistrationNavigationActivity"
               android:launchMode="singleTask"
               android:theme="@style/TextSecure.LightRegistrationTheme"
@@ -337,18 +424,22 @@
                android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".logsubmit.SubmitDebugLogActivity"
-              android:label="@string/AndroidManifest__log_submit"
               android:windowSoftInputMode="stateHidden"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
-        <activity android:name=".MediaPreviewActivity"
+    <activity android:name=".MediaPreviewActivity"
               android:label="@string/AndroidManifest__media_preview"
               android:windowSoftInputMode="stateHidden"
               android:launchMode="singleTask"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
+    <activity android:name=".AvatarPreviewActivity"
+              android:label="@string/AndroidManifest__media_preview"
+              android:windowSoftInputMode="stateHidden"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
+
     <activity android:name=".mediaoverview.MediaOverviewActivity"
-              android:theme="@style/TextSecure.LightNoActionBar"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:windowSoftInputMode="stateHidden"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
@@ -399,25 +490,28 @@
 
     </activity>
 
-    <activity android:name=".RecipientPreferenceActivity"
-              android:theme="@style/TextSecure.LightNoActionBar"
-              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
-
     <activity android:name=".mediasend.AvatarSelectionActivity"
               android:theme="@style/TextSecure.FullScreenMedia"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
-    <activity android:name=".BlockedContactsActivity"
+    <activity android:name=".blocked.BlockedUsersActivity"
               android:theme="@style/TextSecure.LightTheme"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".scribbles.ImageEditorStickerSelectActivity"
-              android:theme="@style/TextSecure.DarkTheme"
+              android:theme="@style/Signal.DayNight.NoActionBar"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".profiles.edit.EditProfileActivity"
+              android:theme="@style/TextSecure.LightRegistrationTheme"
+              android:windowSoftInputMode="stateVisible|adjustResize" />
+
+    <activity android:name=".profiles.manage.ManageProfileActivity"
+              android:theme="@style/TextSecure.LightTheme"
+              android:windowSoftInputMode="stateVisible|adjustResize" />
+
+    <activity android:name=".payments.preferences.PaymentsActivity"
             android:theme="@style/TextSecure.LightRegistrationTheme"
-            android:windowSoftInputMode="stateVisible"
             android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".lock.v2.CreateKbsPinActivity"
@@ -430,17 +524,14 @@
             android:windowSoftInputMode="adjustResize"
             android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
-    <activity android:name=".ClearProfileAvatarActivity"
+    <activity android:name=".ClearAvatarPromptActivity"
-            android:theme="@style/Theme.AppCompat.Dialog.Alert"
+              android:theme="@style/Theme.AppCompat.Dialog.Alert"
-            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
+              android:icon="@drawable/clear_profile_avatar"
-            android:icon="@drawable/clear_profile_avatar"
+              android:label="@string/AndroidManifest_remove_photo"
-            android:label="@string/AndroidManifest_remove_photo">
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
-        <intent-filter>
+    <activity android:name=".contacts.TurnOffContactJoinedNotificationsActivity"
-            <action android:name="org.thoughtcrime.securesms.action.CLEAR_PROFILE_PHOTO"/>
+              android:theme="@style/Theme.AppCompat.Dialog.Alert" />
-            <category android:name="android.intent.category.DEFAULT"/>
-        </intent-filter>
-    </activity>
 
     <activity android:name=".messagerequests.MessageRequestMegaphoneActivity"
               android:theme="@style/TextSecure.LightRegistrationTheme"
@@ -452,38 +543,85 @@
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".contactshare.ContactNameEditActivity"
-              android:theme="@style/TextSecure.LightNoActionBar"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".contactshare.SharedContactDetailsActivity"
-              android:theme="@style/TextSecure.LightNoActionBar"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".ShortcutLauncherActivity"
-              android:theme="@style/TextSecure.LightNoActionBar"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:exported="true"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity
             android:name=".maps.PlacePickerActivity"
             android:label="@string/PlacePickerActivity_title"
-            android:theme="@style/TextSecure.LightNoActionBar"
+            android:theme="@style/Theme.Signal.DayNight.NoActionBar"
             android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".MainActivity"
-              android:theme="@style/TextSecure.LightNoActionBar"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
-              android:launchMode="singleTask"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize" />
 
     <activity android:name=".pin.PinRestoreActivity"
-              android:theme="@style/TextSecure.LightNoActionBar"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize" />
 
+    <activity android:name=".groups.ui.creategroup.CreateGroupActivity"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar" />
 
-        <service android:enabled="true" android:name="org.thoughtcrime.securesms.service.WebRtcCallService"/>
+    <activity android:name=".groups.ui.addtogroup.AddToGroupsActivity"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar" />
+
+    <activity android:name=".groups.ui.addmembers.AddMembersActivity"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar" />
+
+    <activity android:name=".groups.ui.creategroup.details.AddGroupDetailsActivity"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar" />
+
+    <activity android:name=".groups.ui.chooseadmin.ChooseNewAdminActivity"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize" />
+
+    <activity android:name=".megaphone.ClientDeprecatedActivity"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode"
+              android:launchMode="singleTask" />
+
+    <activity android:name=".ratelimit.RecaptchaProofActivity"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize|uiMode" />
+
+    <activity android:name=".wallpaper.crop.WallpaperImageSelectionActivity"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
+              android:theme="@style/TextSecure.FullScreenMedia" />
+
+    <activity android:name=".wallpaper.crop.WallpaperCropActivity"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
+              android:screenOrientation="portrait"
+              android:theme="@style/Theme.Signal.WallpaperCropper" />
+
+    <activity android:name=".reactions.edit.EditReactionsActivity"
+              android:theme="@style/Theme.Signal.DayNight.NoActionBar"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
+
+    <service android:enabled="true" android:name=".service.webrtc.WebRtcCallService"/>
     <service android:enabled="true" android:name=".service.ApplicationMigrationService"/>
     <service android:enabled="true" android:exported="false" android:name=".service.KeyCachingService"/>
-    <service android:enabled="true" android:name=".service.IncomingMessageObserver$ForegroundService"/>
+    <service android:enabled="true" android:name=".messages.IncomingMessageObserver$ForegroundService"/>
+
+    <service android:name=".components.voice.VoiceNotePlaybackService">
+        <intent-filter>
+            <action android:name="android.media.browse.MediaBrowserService" />
+        </intent-filter>
+    </service>
+
+    <receiver android:name="androidx.media.session.MediaButtonReceiver" >
+        <intent-filter>
+            <action android:name="android.intent.action.MEDIA_BUTTON" />
+        </intent-filter>
+    </receiver>
 
     <service android:name=".service.QuickResponseService"
              android:permission="android.permission.SEND_RESPOND_VIA_MESSAGE"
@@ -522,7 +660,9 @@
 
     <service android:name=".service.GenericForegroundService"/>
 
-    <service android:name=".gcm.FcmService">
+    <service android:name=".gcm.FcmFetchService" />
+
+    <service android:name=".gcm.FcmReceiveService">
         <intent-filter>
             <action android:name="com.google.firebase.MESSAGING_EVENT" />
         </intent-filter>
@@ -577,36 +717,33 @@
         </intent-filter>
     </receiver>
 
-    <receiver android:name=".notifications.AndroidAutoHeardReceiver"
-              android:exported="false">
-        <intent-filter>
-          <action android:name="org.thoughtcrime.securesms.notifications.ANDROID_AUTO_HEARD"/>
-        </intent-filter>
-    </receiver>
-
-    <receiver android:name=".notifications.AndroidAutoReplyReceiver"
-              android:exported="false">
-        <intent-filter>
-          <action android:name="org.thoughtcrime.securesms.notifications.ANDROID_AUTO_REPLY"/>
-        </intent-filter>
-    </receiver>
-
     <receiver android:name=".service.ExpirationListener" />
 
     <receiver android:name=".revealable.ViewOnceMessageManager$ViewOnceAlarm" />
 
+    <receiver android:name=".service.PendingRetryReceiptManager$PendingRetryReceiptAlarm" />
+
+    <receiver android:name=".service.TrimThreadsByDateManager$TrimThreadsByDateAlarm" />
+
+    <receiver android:name=".payments.backup.phrase.ClearClipboardAlarmReceiver" />
+
     <provider android:name=".providers.PartProvider"
               android:grantUriPermissions="true"
               android:exported="false"
-              android:authorities="org.thoughtcrime.provider.securesms" />
+              android:authorities="${applicationId}.part" />
+
+    <provider android:name=".providers.BlobContentProvider"
+              android:authorities="${applicationId}.blob"
+              android:exported="false"
+              android:grantUriPermissions="true" />
 
     <provider android:name=".providers.MmsBodyProvider"
               android:grantUriPermissions="true"
               android:exported="false"
-              android:authorities="org.thoughtcrime.provider.securesms.mms" />
+              android:authorities="${applicationId}.mms" />
 
     <provider android:name="androidx.core.content.FileProvider"
-              android:authorities="org.thoughtcrime.securesms.fileprovider"
+              android:authorities="${applicationId}.fileprovider"
               android:exported="false"
               android:grantUriPermissions="true">
 
@@ -615,23 +752,19 @@
     </provider>
 
     <provider android:name=".database.DatabaseContentProviders$Conversation"
-              android:authorities="org.thoughtcrime.securesms.database.conversation"
+              android:authorities="${applicationId}.database.conversation"
-              android:exported="false" />
-
-    <provider android:name=".database.DatabaseContentProviders$ConversationList"
-              android:authorities="org.thoughtcrime.securesms.database.conversationlist"
               android:exported="false" />
 
     <provider android:name=".database.DatabaseContentProviders$Attachment"
-              android:authorities="org.thoughtcrime.securesms.database.attachment"
+              android:authorities="${applicationId}.database.attachment"
               android:exported="false" />
 
     <provider android:name=".database.DatabaseContentProviders$Sticker"
-              android:authorities="org.thoughtcrime.securesms.database.sticker"
+              android:authorities="${applicationId}.database.sticker"
               android:exported="false" />
 
     <provider android:name=".database.DatabaseContentProviders$StickerPack"
-              android:authorities="org.thoughtcrime.securesms.database.stickerpack"
+              android:authorities="${applicationId}.database.stickerpack"
               android:exported="false" />
 
     <receiver android:name=".service.BootReceiver">
@@ -659,6 +792,13 @@
         </intent-filter>
     </receiver>
 
+    <receiver android:name=".messageprocessingalarm.MessageProcessReceiver">
+        <intent-filter>
+            <action android:name="android.intent.action.BOOT_COMPLETED" />
+            <action android:name="org.thoughtcrime.securesms.action.PROCESS_MESSAGES" />
+        </intent-filter>
+    </receiver>
+
     <receiver android:name=".service.LocalBackupListener">
         <intent-filter>
             <action android:name="android.intent.action.BOOT_COMPLETED" />
@@ -677,11 +817,7 @@
         </intent-filter>
     </receiver>
 
-    <receiver android:name=".notifications.MessageNotifier$ReminderReceiver">
+    <receiver android:name=".notifications.MessageNotifier$ReminderReceiver"/>
-        <intent-filter>
-            <action android:name="org.thoughtcrime.securesms.MessageNotifier.REMINDER_ACTION"/>
-        </intent-filter>
-    </receiver>
 
     <receiver android:name=".notifications.DeleteNotificationReceiver">
         <intent-filter>
@@ -728,12 +864,5 @@
 
     <uses-library android:name="org.apache.http.legacy" android:required="false"/>
 
-    <uses-library android:name="com.sec.android.app.multiwindow" android:required="false"/>
-    <meta-data android:name="com.sec.android.support.multiwindow" android:value="true" />
-    <meta-data android:name="com.sec.android.multiwindow.DEFAULT_SIZE_W" android:value="632.0dip" />
-    <meta-data android:name="com.sec.android.multiwindow.DEFAULT_SIZE_H" android:value="598.0dip" />
-    <meta-data android:name="com.sec.android.multiwindow.MINIMUM_SIZE_W" android:value="632.0dip" />
-    <meta-data android:name="com.sec.android.multiwindow.MINIMUM_SIZE_H" android:value="598.0dip" />
-
 </application>
 </manifest>

app/src/main/java/androidx/camera/view/SignalCameraView.java

@@ -0,0 +1,824 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.camera.view;
+
+import android.Manifest.permission;
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.hardware.display.DisplayManager;
+import android.hardware.display.DisplayManager.DisplayListener;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.Parcelable;
+import android.text.TextUtils;
+import android.util.AttributeSet;
+import android.view.Display;
+import android.view.MotionEvent;
+import android.view.ScaleGestureDetector;
+import android.view.Surface;
+import android.view.View;
+import android.view.ViewConfiguration;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
+import androidx.annotation.RequiresPermission;
+import androidx.annotation.RestrictTo;
+import androidx.annotation.RestrictTo.Scope;
+import androidx.camera.core.Camera;
+import androidx.camera.core.CameraSelector;
+import androidx.camera.core.FocusMeteringAction;
+import androidx.camera.core.FocusMeteringResult;
+import androidx.camera.core.ImageCapture;
+import androidx.camera.core.ImageCapture.OnImageCapturedCallback;
+import androidx.camera.core.ImageCapture.OnImageSavedCallback;
+import androidx.camera.core.ImageProxy;
+import androidx.camera.core.Logger;
+import androidx.camera.core.MeteringPoint;
+import androidx.camera.core.MeteringPointFactory;
+import androidx.camera.core.VideoCapture;
+import androidx.camera.core.VideoCapture.OnVideoSavedCallback;
+import androidx.camera.core.impl.LensFacingConverter;
+import androidx.camera.core.impl.utils.executor.CameraXExecutors;
+import androidx.camera.core.impl.utils.futures.FutureCallback;
+import androidx.camera.core.impl.utils.futures.Futures;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.lifecycle.LiveData;
+
+import com.google.common.util.concurrent.ListenableFuture;
+
+import org.signal.core.util.logging.Log;
+
+import java.io.File;
+import java.util.concurrent.Executor;
+
+/**
+ * A {@link View} that displays a preview of the camera with methods {@link
+ * #takePicture(Executor, OnImageCapturedCallback)},
+ * {@link #takePicture(ImageCapture.OutputFileOptions, Executor, OnImageSavedCallback)},
+ * {@link #startRecording(File , Executor , OnVideoSavedCallback callback)}
+ * and {@link #stopRecording()}.
+ *
+ * <p>Because the Camera is a limited resource and consumes a high amount of power, CameraView must
+ * be opened/closed. CameraView will handle opening/closing automatically through use of a {@link
+ * LifecycleOwner}. Use {@link #bindToLifecycle(LifecycleOwner)} to start the camera.
+ */
+@RequiresApi(21)
+@SuppressLint("RestrictedApi")
+public final class SignalCameraView extends FrameLayout {
+  static final String TAG = Log.tag(SignalCameraView.class);
+
+  static final int INDEFINITE_VIDEO_DURATION = -1;
+  static final int INDEFINITE_VIDEO_SIZE = -1;
+
+  private static final String EXTRA_SUPER = "super";
+  private static final String EXTRA_ZOOM_RATIO = "zoom_ratio";
+  private static final String EXTRA_PINCH_TO_ZOOM_ENABLED = "pinch_to_zoom_enabled";
+  private static final String EXTRA_FLASH = "flash";
+  private static final String EXTRA_MAX_VIDEO_DURATION = "max_video_duration";
+  private static final String EXTRA_MAX_VIDEO_SIZE = "max_video_size";
+  private static final String EXTRA_SCALE_TYPE = "scale_type";
+  private static final String EXTRA_CAMERA_DIRECTION = "camera_direction";
+  private static final String EXTRA_CAPTURE_MODE = "captureMode";
+
+  private static final int LENS_FACING_NONE = 0;
+  private static final int LENS_FACING_FRONT = 1;
+  private static final int LENS_FACING_BACK = 2;
+  private static final int FLASH_MODE_AUTO = 1;
+  private static final int FLASH_MODE_ON = 2;
+  private static final int FLASH_MODE_OFF = 4;
+  // For tap-to-focus
+  private long mDownEventTimestamp;
+  // For pinch-to-zoom
+  private PinchToZoomGestureDetector mPinchToZoomGestureDetector;
+  private boolean mIsPinchToZoomEnabled = true;
+  SignalCameraXModule mCameraModule;
+  private final DisplayManager.DisplayListener mDisplayListener =
+      new DisplayListener() {
+        @Override
+        public void onDisplayAdded(int displayId) {
+        }
+
+        @Override
+        public void onDisplayRemoved(int displayId) {
+        }
+
+        @Override
+        public void onDisplayChanged(int displayId) {
+          mCameraModule.invalidateView();
+        }
+      };
+  private PreviewView mPreviewView;
+  // For accessibility event
+  private MotionEvent mUpEvent;
+
+  public SignalCameraView(@NonNull Context context) {
+    this(context, null);
+  }
+
+  public SignalCameraView(@NonNull Context context, @Nullable AttributeSet attrs) {
+    this(context, attrs, 0);
+  }
+
+  public SignalCameraView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyle) {
+    super(context, attrs, defStyle);
+    init(context, attrs);
+  }
+
+  @RequiresApi(21)
+  public SignalCameraView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr,
+                          int defStyleRes) {
+    super(context, attrs, defStyleAttr, defStyleRes);
+    init(context, attrs);
+  }
+
+  /**
+   * Binds control of the camera used by this view to the given lifecycle.
+   *
+   * <p>This links opening/closing the camera to the given lifecycle. The camera will not operate
+   * unless this method is called with a valid {@link LifecycleOwner} that is not in the {@link
+   * androidx.lifecycle.Lifecycle.State#DESTROYED} state. Call this method only once camera
+   * permissions have been obtained.
+   *
+   * <p>Once the provided lifecycle has transitioned to a {@link
+   * androidx.lifecycle.Lifecycle.State#DESTROYED} state, CameraView must be bound to a new
+   * lifecycle through this method in order to operate the camera.
+   *
+   * @param lifecycleOwner The lifecycle that will control this view's camera
+   * @throws IllegalArgumentException if provided lifecycle is in a {@link
+   *                                  androidx.lifecycle.Lifecycle.State#DESTROYED} state.
+   * @throws IllegalStateException    if camera permissions are not granted.
+   */
+  @RequiresPermission(permission.CAMERA)
+  public void bindToLifecycle(@NonNull LifecycleOwner lifecycleOwner) {
+    mCameraModule.bindToLifecycle(lifecycleOwner);
+  }
+
+  private void init(Context context, @Nullable AttributeSet attrs) {
+    addView(mPreviewView = new PreviewView(getContext()), 0 /* view position */);
+    mCameraModule = new SignalCameraXModule(this);
+
+    if (attrs != null) {
+      TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CameraView);
+      setScaleType(
+          PreviewView.ScaleType.fromId(
+              a.getInteger(R.styleable.CameraView_scaleType,
+                  getScaleType().getId())));
+      setPinchToZoomEnabled(
+          a.getBoolean(
+              R.styleable.CameraView_pinchToZoomEnabled, isPinchToZoomEnabled()));
+      setCaptureMode(
+          CaptureMode.fromId(
+              a.getInteger(R.styleable.CameraView_captureMode,
+                  getCaptureMode().getId())));
+
+      int lensFacing = a.getInt(R.styleable.CameraView_lensFacing, LENS_FACING_BACK);
+      switch (lensFacing) {
+        case LENS_FACING_NONE:
+          setCameraLensFacing(null);
+          break;
+        case LENS_FACING_FRONT:
+          setCameraLensFacing(CameraSelector.LENS_FACING_FRONT);
+          break;
+        case LENS_FACING_BACK:
+          setCameraLensFacing(CameraSelector.LENS_FACING_BACK);
+          break;
+        default:
+          // Unhandled event.
+      }
+
+      int flashMode = a.getInt(R.styleable.CameraView_flash, 0);
+      switch (flashMode) {
+        case FLASH_MODE_AUTO:
+          setFlash(ImageCapture.FLASH_MODE_AUTO);
+          break;
+        case FLASH_MODE_ON:
+          setFlash(ImageCapture.FLASH_MODE_ON);
+          break;
+        case FLASH_MODE_OFF:
+          setFlash(ImageCapture.FLASH_MODE_OFF);
+          break;
+        default:
+          // Unhandled event.
+      }
+
+      a.recycle();
+    }
+
+    if (getBackground() == null) {
+      setBackgroundColor(0xFF111111);
+    }
+
+    mPinchToZoomGestureDetector = new PinchToZoomGestureDetector(context);
+  }
+
+  @Override
+  @NonNull
+  protected LayoutParams generateDefaultLayoutParams() {
+    return new LayoutParams(
+        ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
+  }
+
+  @Override
+  @NonNull
+  protected Parcelable onSaveInstanceState() {
+    // TODO(b/113884082): Decide what belongs here or what should be invalidated on
+    // configuration
+    // change
+    Bundle state = new Bundle();
+    state.putParcelable(EXTRA_SUPER, super.onSaveInstanceState());
+    state.putInt(EXTRA_SCALE_TYPE, getScaleType().getId());
+    state.putFloat(EXTRA_ZOOM_RATIO, getZoomRatio());
+    state.putBoolean(EXTRA_PINCH_TO_ZOOM_ENABLED, isPinchToZoomEnabled());
+    state.putString(EXTRA_FLASH, FlashModeConverter.nameOf(getFlash()));
+    state.putLong(EXTRA_MAX_VIDEO_DURATION, getMaxVideoDuration());
+    state.putLong(EXTRA_MAX_VIDEO_SIZE, getMaxVideoSize());
+    if (getCameraLensFacing() != null) {
+      state.putString(EXTRA_CAMERA_DIRECTION,
+          LensFacingConverter.nameOf(getCameraLensFacing()));
+    }
+    state.putInt(EXTRA_CAPTURE_MODE, getCaptureMode().getId());
+    return state;
+  }
+
+  @Override
+  protected void onRestoreInstanceState(@Nullable Parcelable savedState) {
+    // TODO(b/113884082): Decide what belongs here or what should be invalidated on
+    // configuration
+    // change
+    if (savedState instanceof Bundle) {
+      Bundle state = (Bundle) savedState;
+      super.onRestoreInstanceState(state.getParcelable(EXTRA_SUPER));
+      setScaleType(PreviewView.ScaleType.fromId(state.getInt(EXTRA_SCALE_TYPE)));
+      setZoomRatio(state.getFloat(EXTRA_ZOOM_RATIO));
+      setPinchToZoomEnabled(state.getBoolean(EXTRA_PINCH_TO_ZOOM_ENABLED));
+      setFlash(FlashModeConverter.valueOf(state.getString(EXTRA_FLASH)));
+      setMaxVideoDuration(state.getLong(EXTRA_MAX_VIDEO_DURATION));
+      setMaxVideoSize(state.getLong(EXTRA_MAX_VIDEO_SIZE));
+      String lensFacingString = state.getString(EXTRA_CAMERA_DIRECTION);
+      setCameraLensFacing(
+          TextUtils.isEmpty(lensFacingString)
+              ? null
+              : LensFacingConverter.valueOf(lensFacingString));
+      setCaptureMode(CaptureMode.fromId(state.getInt(EXTRA_CAPTURE_MODE)));
+    } else {
+      super.onRestoreInstanceState(savedState);
+    }
+  }
+
+  @Override
+  protected void onAttachedToWindow() {
+    super.onAttachedToWindow();
+    DisplayManager dpyMgr =
+        (DisplayManager) getContext().getSystemService(Context.DISPLAY_SERVICE);
+    dpyMgr.registerDisplayListener(mDisplayListener, new Handler(Looper.getMainLooper()));
+  }
+
+  @Override
+  protected void onDetachedFromWindow() {
+    super.onDetachedFromWindow();
+    DisplayManager dpyMgr =
+        (DisplayManager) getContext().getSystemService(Context.DISPLAY_SERVICE);
+    dpyMgr.unregisterDisplayListener(mDisplayListener);
+  }
+
+  /**
+   * Gets the {@link LiveData} of the underlying {@link PreviewView}'s
+   * {@link PreviewView.StreamState}.
+   *
+   * @return A {@link LiveData} containing the {@link PreviewView.StreamState}. Apps can either
+   * get current value by {@link LiveData#getValue()} or register a observer by
+   * {@link LiveData#observe}.
+   * @see PreviewView#getPreviewStreamState()
+   */
+  @NonNull
+  public LiveData<PreviewView.StreamState> getPreviewStreamState() {
+    return mPreviewView.getPreviewStreamState();
+  }
+
+  @NonNull
+  PreviewView getPreviewView() {
+    return mPreviewView;
+  }
+
+  // TODO(b/124269166): Rethink how we can handle permissions here.
+  @SuppressLint("MissingPermission")
+  @Override
+  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+    // Since bindToLifecycle will depend on the measured dimension, only call it when measured
+    // dimension is not 0x0
+    if (getMeasuredWidth() > 0 && getMeasuredHeight() > 0) {
+      mCameraModule.bindToLifecycleAfterViewMeasured();
+    }
+
+    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+  }
+
+  // TODO(b/124269166): Rethink how we can handle permissions here.
+  @SuppressLint("MissingPermission")
+  @Override
+  protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+    // In case that the CameraView size is always set as 0x0, we still need to trigger to force
+    // binding to lifecycle
+    mCameraModule.bindToLifecycleAfterViewMeasured();
+
+    mCameraModule.invalidateView();
+    super.onLayout(changed, left, top, right, bottom);
+  }
+
+  /**
+   * @return One of {@link Surface#ROTATION_0}, {@link Surface#ROTATION_90}, {@link
+   * Surface#ROTATION_180}, {@link Surface#ROTATION_270}.
+   */
+  int getDisplaySurfaceRotation() {
+    Display display = getDisplay();
+
+    // Null when the View is detached. If we were in the middle of a background operation,
+    // better to not NPE. When the background operation finishes, it'll realize that the camera
+    // was closed.
+    if (display == null) {
+      return 0;
+    }
+
+    return display.getRotation();
+  }
+
+  /**
+   * Returns the scale type used to scale the preview.
+   *
+   * @return The current {@link PreviewView.ScaleType}.
+   */
+  @NonNull
+  public PreviewView.ScaleType getScaleType() {
+    return mPreviewView.getScaleType();
+  }
+
+  /**
+   * Sets the view finder scale type.
+   *
+   * <p>This controls how the view finder should be scaled and positioned within the view.
+   *
+   * @param scaleType The desired {@link PreviewView.ScaleType}.
+   */
+  public void setScaleType(@NonNull PreviewView.ScaleType scaleType) {
+    mPreviewView.setScaleType(scaleType);
+  }
+
+  /**
+   * Returns the scale type used to scale the preview.
+   *
+   * @return The current {@link CaptureMode}.
+   */
+  @NonNull
+  public CaptureMode getCaptureMode() {
+    return mCameraModule.getCaptureMode();
+  }
+
+  /**
+   * Sets the CameraView capture mode
+   *
+   * <p>This controls only image or video capture function is enabled or both are enabled.
+   *
+   * @param captureMode The desired {@link CaptureMode}.
+   */
+  public void setCaptureMode(@NonNull CaptureMode captureMode) {
+    mCameraModule.setCaptureMode(captureMode);
+  }
+
+  /**
+   * Returns the maximum duration of videos, or {@link #INDEFINITE_VIDEO_DURATION} if there is no
+   * timeout.
+   *
+   * @hide Not currently implemented.
+   */
+  @RestrictTo(Scope.LIBRARY_GROUP)
+  public long getMaxVideoDuration() {
+    return mCameraModule.getMaxVideoDuration();
+  }
+
+  /**
+   * Sets the maximum video duration before
+   * {@link OnVideoSavedCallback#onVideoSaved(VideoCapture.OutputFileResults)} is called
+   * automatically.
+   * Use {@link #INDEFINITE_VIDEO_DURATION} to disable the timeout.
+   */
+  private void setMaxVideoDuration(long duration) {
+    mCameraModule.setMaxVideoDuration(duration);
+  }
+
+  /**
+   * Returns the maximum size of videos in bytes, or {@link #INDEFINITE_VIDEO_SIZE} if there is no
+   * timeout.
+   */
+  private long getMaxVideoSize() {
+    return mCameraModule.getMaxVideoSize();
+  }
+
+  /**
+   * Sets the maximum video size in bytes before
+   * {@link OnVideoSavedCallback#onVideoSaved(VideoCapture.OutputFileResults)}
+   * is called automatically. Use {@link #INDEFINITE_VIDEO_SIZE} to disable the size restriction.
+   */
+  private void setMaxVideoSize(long size) {
+    mCameraModule.setMaxVideoSize(size);
+  }
+
+  /**
+   * Takes a picture, and calls {@link OnImageCapturedCallback#onCaptureSuccess(ImageProxy)}
+   * once when done.
+   *
+   * @param executor The executor in which the callback methods will be run.
+   * @param callback Callback which will receive success or failure callbacks.
+   */
+  public void takePicture(@NonNull Executor executor, @NonNull OnImageCapturedCallback callback) {
+    mCameraModule.takePicture(executor, callback);
+  }
+
+  /**
+   * Takes a picture and calls
+   * {@link OnImageSavedCallback#onImageSaved(ImageCapture.OutputFileResults)} when done.
+   *
+   * <p> The value of {@link ImageCapture.Metadata#isReversedHorizontal()} in the
+   * {@link ImageCapture.OutputFileOptions} will be overwritten based on camera direction. For
+   * front camera, it will be set to true; for back camera, it will be set to false.
+   *
+   * @param outputFileOptions Options to store the newly captured image.
+   * @param executor          The executor in which the callback methods will be run.
+   * @param callback          Callback which will receive success or failure.
+   */
+  public void takePicture(@NonNull ImageCapture.OutputFileOptions outputFileOptions,
+                          @NonNull Executor executor,
+                          @NonNull OnImageSavedCallback callback) {
+    mCameraModule.takePicture(outputFileOptions, executor, callback);
+  }
+
+  /**
+   * Takes a video and calls the OnVideoSavedCallback when done.
+   *
+   * @param outputFileOptions     Options to store the newly captured video.
+   * @param executor              The executor in which the callback methods will be run.
+   * @param callback              Callback which will receive success or failure.
+   */
+  public void startRecording(@NonNull VideoCapture.OutputFileOptions outputFileOptions,
+                             @NonNull Executor executor,
+                             @NonNull OnVideoSavedCallback callback) {
+    mCameraModule.startRecording(outputFileOptions, executor, callback);
+  }
+
+  /** Stops an in progress video. */
+  public void stopRecording() {
+    mCameraModule.stopRecording();
+  }
+
+  /** @return True if currently recording. */
+  public boolean isRecording() {
+    return mCameraModule.isRecording();
+  }
+
+  /**
+   * Queries whether the current device has a camera with the specified direction.
+   *
+   * @return True if the device supports the direction.
+   * @throws IllegalStateException if the CAMERA permission is not currently granted.
+   */
+  @RequiresPermission(permission.CAMERA)
+  public boolean hasCameraWithLensFacing(@CameraSelector.LensFacing int lensFacing) {
+    return mCameraModule.hasCameraWithLensFacing(lensFacing);
+  }
+
+  /**
+   * Toggles between the primary front facing camera and the primary back facing camera.
+   *
+   * <p>This will have no effect if not already bound to a lifecycle via {@link
+   * #bindToLifecycle(LifecycleOwner)}.
+   */
+  public void toggleCamera() {
+    mCameraModule.toggleCamera();
+  }
+
+  /**
+   * Sets the desired camera by specifying desired lensFacing.
+   *
+   * <p>This will choose the primary camera with the specified camera lensFacing.
+   *
+   * <p>If called before {@link #bindToLifecycle(LifecycleOwner)}, this will set the camera to be
+   * used when first bound to the lifecycle. If the specified lensFacing is not supported by the
+   * device, as determined by {@link #hasCameraWithLensFacing(int)}, the first supported
+   * lensFacing will be chosen when {@link #bindToLifecycle(LifecycleOwner)} is called.
+   *
+   * <p>If called with {@code null} AFTER binding to the lifecycle, the behavior would be
+   * equivalent to unbind the use cases without the lifecycle having to be destroyed.
+   *
+   * @param lensFacing The desired camera lensFacing.
+   */
+  public void setCameraLensFacing(@Nullable Integer lensFacing) {
+    mCameraModule.setCameraLensFacing(lensFacing);
+  }
+
+  /** Returns the currently selected lensFacing. */
+  @Nullable
+  public Integer getCameraLensFacing() {
+    return mCameraModule.getLensFacing();
+  }
+
+  /** Gets the active flash strategy. */
+  @ImageCapture.FlashMode
+  public int getFlash() {
+    return mCameraModule.getFlash();
+  }
+
+  // Begin Signal Custom Code Block
+  public boolean hasFlash() {
+    return mCameraModule.hasFlash();
+  }
+  // End Signal Custom Code Block
+
+  /** Sets the active flash strategy. */
+  public void setFlash(@ImageCapture.FlashMode int flashMode) {
+    mCameraModule.setFlash(flashMode);
+  }
+
+  private long delta() {
+    return System.currentTimeMillis() - mDownEventTimestamp;
+  }
+
+  @Override
+  public boolean onTouchEvent(@NonNull MotionEvent event) {
+    // Disable pinch-to-zoom and tap-to-focus while the camera module is paused.
+    if (mCameraModule.isPaused()) {
+      return false;
+    }
+    // Only forward the event to the pinch-to-zoom gesture detector when pinch-to-zoom is
+    // enabled.
+    if (isPinchToZoomEnabled()) {
+      mPinchToZoomGestureDetector.onTouchEvent(event);
+    }
+    if (event.getPointerCount() == 2 && isPinchToZoomEnabled() && isZoomSupported()) {
+      return true;
+    }
+
+    // Camera focus
+    switch (event.getAction()) {
+      case MotionEvent.ACTION_DOWN:
+        mDownEventTimestamp = System.currentTimeMillis();
+        break;
+      case MotionEvent.ACTION_UP:
+        if (delta() < ViewConfiguration.getLongPressTimeout()
+            && mCameraModule.isBoundToLifecycle()) {
+          mUpEvent = event;
+          performClick();
+        }
+        break;
+      default:
+        // Unhandled event.
+        return false;
+    }
+    return true;
+  }
+
+  /**
+   * Focus the position of the touch event, or focus the center of the preview for
+   * accessibility events
+   */
+  @Override
+  public boolean performClick() {
+    super.performClick();
+
+    final float x = (mUpEvent != null) ? mUpEvent.getX() : getX() + getWidth() / 2f;
+    final float y = (mUpEvent != null) ? mUpEvent.getY() : getY() + getHeight() / 2f;
+    mUpEvent = null;
+
+    Camera camera = mCameraModule.getCamera();
+    if (camera != null) {
+      MeteringPointFactory pointFactory = mPreviewView.getMeteringPointFactory();
+      float afPointWidth = 1.0f / 6.0f;  // 1/6 total area
+      float aePointWidth = afPointWidth * 1.5f;
+      MeteringPoint afPoint = pointFactory.createPoint(x, y, afPointWidth);
+      MeteringPoint aePoint = pointFactory.createPoint(x, y, aePointWidth);
+
+      ListenableFuture<FocusMeteringResult> future =
+          camera.getCameraControl().startFocusAndMetering(
+              new FocusMeteringAction.Builder(afPoint,
+                  FocusMeteringAction.FLAG_AF).addPoint(aePoint,
+                  FocusMeteringAction.FLAG_AE).build());
+      Futures.addCallback(future, new FutureCallback<FocusMeteringResult>() {
+        @Override
+        public void onSuccess(@Nullable FocusMeteringResult result) {
+        }
+
+        @Override
+        public void onFailure(Throwable t) {
+          // Throw the unexpected error.
+          throw new RuntimeException(t);
+        }
+      }, CameraXExecutors.directExecutor());
+
+    } else {
+      Logger.d(TAG, "cannot access camera");
+    }
+
+    return true;
+  }
+
+  float rangeLimit(float val, float max, float min) {
+    return Math.min(Math.max(val, min), max);
+  }
+
+  /**
+   * Returns whether the view allows pinch-to-zoom.
+   *
+   * @return True if pinch to zoom is enabled.
+   */
+  public boolean isPinchToZoomEnabled() {
+    return mIsPinchToZoomEnabled;
+  }
+
+  /**
+   * Sets whether the view should allow pinch-to-zoom.
+   *
+   * <p>When enabled, the user can pinch the camera to zoom in/out. This only has an effect if the
+   * bound camera supports zoom.
+   *
+   * @param enabled True to enable pinch-to-zoom.
+   */
+  public void setPinchToZoomEnabled(boolean enabled) {
+    mIsPinchToZoomEnabled = enabled;
+  }
+
+  /**
+   * Returns the current zoom ratio.
+   *
+   * @return The current zoom ratio.
+   */
+  public float getZoomRatio() {
+    return mCameraModule.getZoomRatio();
+  }
+
+  /**
+   * Sets the current zoom ratio.
+   *
+   * <p>Valid zoom values range from {@link #getMinZoomRatio()} to {@link #getMaxZoomRatio()}.
+   *
+   * @param zoomRatio The requested zoom ratio.
+   */
+  public void setZoomRatio(float zoomRatio) {
+    mCameraModule.setZoomRatio(zoomRatio);
+  }
+
+  /**
+   * Returns the minimum zoom ratio.
+   *
+   * <p>For most cameras this should return a zoom ratio of 1. A zoom ratio of 1 corresponds to a
+   * non-zoomed image.
+   *
+   * @return The minimum zoom ratio.
+   */
+  public float getMinZoomRatio() {
+    return mCameraModule.getMinZoomRatio();
+  }
+
+  /**
+   * Returns the maximum zoom ratio.
+   *
+   * <p>The zoom ratio corresponds to the ratio between both the widths and heights of a
+   * non-zoomed image and a maximally zoomed image for the selected camera.
+   *
+   * @return The maximum zoom ratio.
+   */
+  public float getMaxZoomRatio() {
+    return mCameraModule.getMaxZoomRatio();
+  }
+
+  /**
+   * Returns whether the bound camera supports zooming.
+   *
+   * @return True if the camera supports zooming.
+   */
+  public boolean isZoomSupported() {
+    return mCameraModule.isZoomSupported();
+  }
+
+  /**
+   * Turns on/off torch.
+   *
+   * @param torch True to turn on torch, false to turn off torch.
+   */
+  public void enableTorch(boolean torch) {
+    mCameraModule.enableTorch(torch);
+  }
+
+  /**
+   * Returns current torch status.
+   *
+   * @return true if torch is on , otherwise false
+   */
+  public boolean isTorchOn() {
+    return mCameraModule.isTorchOn();
+  }
+
+  /**
+   * The capture mode used by CameraView.
+   *
+   * <p>This enum can be used to determine which capture mode will be enabled for {@link
+   * SignalCameraView}.
+   */
+  public enum CaptureMode {
+    /** A mode where image capture is enabled. */
+    IMAGE(0),
+    /** A mode where video capture is enabled. */
+    VIDEO(1),
+    /**
+     * A mode where both image capture and video capture are simultaneously enabled. Note that
+     * this mode may not be available on every device.
+     */
+    MIXED(2);
+
+    private final int mId;
+
+    int getId() {
+      return mId;
+    }
+
+    CaptureMode(int id) {
+      mId = id;
+    }
+
+    static CaptureMode fromId(int id) {
+      for (CaptureMode f : values()) {
+        if (f.mId == id) {
+          return f;
+        }
+      }
+      throw new IllegalArgumentException();
+    }
+  }
+
+  static class S extends ScaleGestureDetector.SimpleOnScaleGestureListener {
+    private ScaleGestureDetector.OnScaleGestureListener mListener;
+
+    void setRealGestureDetector(ScaleGestureDetector.OnScaleGestureListener l) {
+      mListener = l;
+    }
+
+    @Override
+    public boolean onScale(ScaleGestureDetector detector) {
+      return mListener.onScale(detector);
+    }
+  }
+
+  private class PinchToZoomGestureDetector extends ScaleGestureDetector
+      implements ScaleGestureDetector.OnScaleGestureListener {
+    PinchToZoomGestureDetector(Context context) {
+      this(context, new S());
+    }
+
+    PinchToZoomGestureDetector(Context context, S s) {
+      super(context, s);
+      s.setRealGestureDetector(this);
+    }
+
+    @Override
+    public boolean onScale(ScaleGestureDetector detector) {
+      float scale = detector.getScaleFactor();
+
+      // Speeding up the zoom by 2X.
+      if (scale > 1f) {
+        scale = 1.0f + (scale - 1.0f) * 2;
+      } else {
+        scale = 1.0f - (1.0f - scale) * 2;
+      }
+
+      float newRatio = getZoomRatio() * scale;
+      newRatio = rangeLimit(newRatio, getMaxZoomRatio(), getMinZoomRatio());
+      setZoomRatio(newRatio);
+      return true;
+    }
+
+    @Override
+    public boolean onScaleBegin(ScaleGestureDetector detector) {
+      return true;
+    }
+
+    @Override
+    public void onScaleEnd(ScaleGestureDetector detector) {
+    }
+  }
+}

app/src/main/java/androidx/camera/view/SignalCameraXModule.java

@@ -0,0 +1,696 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.camera.view;
+
+import android.Manifest.permission;
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.content.res.Resources;
+import android.util.Rational;
+import android.util.Size;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
+import androidx.annotation.RequiresPermission;
+import androidx.camera.core.Camera;
+import androidx.camera.core.CameraInfoUnavailableException;
+import androidx.camera.core.CameraSelector;
+import androidx.camera.core.ImageCapture;
+import androidx.camera.core.ImageCapture.OnImageCapturedCallback;
+import androidx.camera.core.ImageCapture.OnImageSavedCallback;
+import androidx.camera.core.Logger;
+import androidx.camera.core.Preview;
+import androidx.camera.core.TorchState;
+import androidx.camera.core.UseCase;
+import androidx.camera.core.VideoCapture;
+import androidx.camera.core.VideoCapture.OnVideoSavedCallback;
+import androidx.camera.core.impl.CameraInternal;
+import androidx.camera.core.impl.LensFacingConverter;
+import androidx.camera.core.impl.utils.CameraOrientationUtil;
+import androidx.camera.core.impl.utils.executor.CameraXExecutors;
+import androidx.camera.core.impl.utils.futures.FutureCallback;
+import androidx.camera.core.impl.utils.futures.Futures;
+import androidx.camera.lifecycle.ProcessCameraProvider;
+import androidx.core.util.Preconditions;
+import androidx.lifecycle.Lifecycle;
+import androidx.lifecycle.LifecycleObserver;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.lifecycle.OnLifecycleEvent;
+
+import com.google.common.util.concurrent.ListenableFuture;
+
+import org.thoughtcrime.securesms.mediasend.camerax.CameraXUtil;
+import org.thoughtcrime.securesms.mms.MediaConstraints;
+import org.thoughtcrime.securesms.video.VideoUtil;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import static androidx.camera.core.ImageCapture.FLASH_MODE_OFF;
+
+/** CameraX use case operation built on @{link androidx.camera.core}. */
+@RequiresApi(21)
+@SuppressLint("RestrictedApi")
+final class SignalCameraXModule {
+  public static final String TAG = "CameraXModule";
+
+  private static final float UNITY_ZOOM_SCALE = 1f;
+  private static final float ZOOM_NOT_SUPPORTED = UNITY_ZOOM_SCALE;
+  private static final Rational ASPECT_RATIO_16_9 = new Rational(16, 9);
+  private static final Rational ASPECT_RATIO_4_3 = new Rational(4, 3);
+  private static final Rational ASPECT_RATIO_9_16 = new Rational(9, 16);
+  private static final Rational ASPECT_RATIO_3_4 = new Rational(3, 4);
+
+  private final Preview.Builder mPreviewBuilder;
+  private final VideoCapture.Builder mVideoCaptureBuilder;
+  private final ImageCapture.Builder mImageCaptureBuilder;
+  private final SignalCameraView mCameraView;
+  final AtomicBoolean mVideoIsRecording = new AtomicBoolean(false);
+  private SignalCameraView.CaptureMode mCaptureMode = SignalCameraView.CaptureMode.IMAGE;
+  private long mMaxVideoDuration = SignalCameraView.INDEFINITE_VIDEO_DURATION;
+  private long mMaxVideoSize = SignalCameraView.INDEFINITE_VIDEO_SIZE;
+  @ImageCapture.FlashMode
+  private int mFlash = FLASH_MODE_OFF;
+  @Nullable
+  @SuppressWarnings("WeakerAccess") /* synthetic accessor */
+      Camera mCamera;
+  @Nullable
+  private ImageCapture mImageCapture;
+  @Nullable
+  private VideoCapture mVideoCapture;
+  @SuppressWarnings("WeakerAccess") /* synthetic accessor */
+  @Nullable
+  Preview mPreview;
+  @SuppressWarnings("WeakerAccess") /* synthetic accessor */
+  @Nullable
+  LifecycleOwner mCurrentLifecycle;
+  private final LifecycleObserver mCurrentLifecycleObserver =
+      new LifecycleObserver() {
+        @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
+        public void onDestroy(LifecycleOwner owner) {
+          if (owner == mCurrentLifecycle) {
+            clearCurrentLifecycle();
+          }
+        }
+      };
+  @Nullable
+  private LifecycleOwner mNewLifecycle;
+  @SuppressWarnings("WeakerAccess") /* synthetic accessor */
+  @Nullable
+  Integer mCameraLensFacing = CameraSelector.LENS_FACING_BACK;
+  @SuppressWarnings("WeakerAccess") /* synthetic accessor */
+  @Nullable
+  ProcessCameraProvider mCameraProvider;
+
+  SignalCameraXModule(SignalCameraView view) {
+    mCameraView = view;
+
+    Futures.addCallback(ProcessCameraProvider.getInstance(view.getContext()),
+        new FutureCallback<ProcessCameraProvider>() {
+          // TODO(b/124269166): Rethink how we can handle permissions here.
+          @SuppressLint("MissingPermission")
+          @Override
+          public void onSuccess(@Nullable ProcessCameraProvider provider) {
+            Preconditions.checkNotNull(provider);
+            mCameraProvider = provider;
+            if (mCurrentLifecycle != null) {
+              bindToLifecycle(mCurrentLifecycle);
+            }
+          }
+
+          @Override
+          public void onFailure(Throwable t) {
+            throw new RuntimeException("CameraX failed to initialize.", t);
+          }
+        }, CameraXExecutors.mainThreadExecutor());
+
+    mPreviewBuilder = new Preview.Builder().setTargetName("Preview");
+
+    mImageCaptureBuilder = new ImageCapture.Builder().setTargetName("ImageCapture");
+
+    mVideoCaptureBuilder = new VideoCapture.Builder().setTargetName("VideoCapture")
+                                                     .setAudioBitRate(VideoUtil.AUDIO_BIT_RATE)
+                                                     .setVideoFrameRate(VideoUtil.VIDEO_FRAME_RATE)
+                                                     .setBitRate(VideoUtil.VIDEO_BIT_RATE);
+  }
+
+  @RequiresPermission(permission.CAMERA)
+  void bindToLifecycle(LifecycleOwner lifecycleOwner) {
+    mNewLifecycle = lifecycleOwner;
+
+    if (getMeasuredWidth() > 0 && getMeasuredHeight() > 0) {
+      bindToLifecycleAfterViewMeasured();
+    }
+  }
+
+  @RequiresPermission(permission.CAMERA)
+  void bindToLifecycleAfterViewMeasured() {
+    if (mNewLifecycle == null) {
+      return;
+    }
+
+    clearCurrentLifecycle();
+    if (mNewLifecycle.getLifecycle().getCurrentState() == Lifecycle.State.DESTROYED) {
+      // Lifecycle is already in a destroyed state. Since it may have been a valid
+      // lifecycle when bound, but became destroyed while waiting for layout, treat this as
+      // a no-op now that we have cleared the previous lifecycle.
+      mNewLifecycle = null;
+      return;
+    }
+    mCurrentLifecycle = mNewLifecycle;
+    mNewLifecycle = null;
+
+    if (mCameraProvider == null) {
+      // try again once the camera provider is no longer null
+      return;
+    }
+
+    Set<Integer> available = getAvailableCameraLensFacing();
+
+    if (available.isEmpty()) {
+      Logger.w(TAG, "Unable to bindToLifeCycle since no cameras available");
+      mCameraLensFacing = null;
+    }
+
+    // Ensure the current camera exists, or default to another camera
+    if (mCameraLensFacing != null && !available.contains(mCameraLensFacing)) {
+      Logger.w(TAG, "Camera does not exist with direction " + mCameraLensFacing);
+
+      // Default to the first available camera direction
+      mCameraLensFacing = available.iterator().next();
+
+      Logger.w(TAG, "Defaulting to primary camera with direction " + mCameraLensFacing);
+    }
+
+    // Do not attempt to create use cases for a null cameraLensFacing. This could occur if
+    // the user explicitly sets the LensFacing to null, or if we determined there
+    // were no available cameras, which should be logged in the logic above.
+    if (mCameraLensFacing == null) {
+      return;
+    }
+
+    // Set the preferred aspect ratio as 4:3 if it is IMAGE only mode. Set the preferred aspect
+    // ratio as 16:9 if it is VIDEO or MIXED mode. Then, it will be WYSIWYG when the view finder
+    // is in CENTER_INSIDE mode.
+
+    boolean isDisplayPortrait = getDisplayRotationDegrees() == 0
+        || getDisplayRotationDegrees() == 180;
+
+    // Begin Signal Custom Code Block
+    int resolution = CameraXUtil.getIdealResolution(Resources.getSystem().getDisplayMetrics().widthPixels, Resources.getSystem().getDisplayMetrics().heightPixels);
+    // End Signal Custom Code Block
+
+    Rational targetAspectRatio;
+    if (getCaptureMode() == SignalCameraView.CaptureMode.IMAGE) {
+      // Begin Signal Custom Code Block
+      mImageCaptureBuilder.setTargetResolution(CameraXUtil.buildResolutionForRatio(resolution, ASPECT_RATIO_4_3, isDisplayPortrait));
+      // End Signal Custom Code Block
+      targetAspectRatio = isDisplayPortrait ? ASPECT_RATIO_3_4 : ASPECT_RATIO_4_3;
+    } else {
+      // Begin Signal Custom Code Block
+      mImageCaptureBuilder.setTargetResolution(CameraXUtil.buildResolutionForRatio(resolution, ASPECT_RATIO_16_9, isDisplayPortrait));
+      // End Signal Custom Code Block
+      targetAspectRatio = isDisplayPortrait ? ASPECT_RATIO_9_16 : ASPECT_RATIO_16_9;
+    }
+
+    // Begin Signal Custom Code Block
+    mImageCaptureBuilder.setCaptureMode(CameraXUtil.getOptimalCaptureMode());
+    // End Signal Custom Code Block
+
+    mImageCaptureBuilder.setTargetRotation(getDisplaySurfaceRotation());
+    mImageCapture = mImageCaptureBuilder.build();
+
+    // Begin Signal Custom Code Block
+    Size size = VideoUtil.getVideoRecordingSize();
+    mVideoCaptureBuilder.setTargetResolution(size);
+    mVideoCaptureBuilder.setMaxResolution(size);
+    // End Signal Custom Code Block
+
+    mVideoCaptureBuilder.setTargetRotation(getDisplaySurfaceRotation());
+    // Begin Signal Custom Code Block
+    if (MediaConstraints.isVideoTranscodeAvailable()) {
+      mVideoCapture = mVideoCaptureBuilder.build();
+    }
+    // End Signal Custom Code Block
+
+    // Adjusts the preview resolution according to the view size and the target aspect ratio.
+    int height = (int) (getMeasuredWidth() / targetAspectRatio.floatValue());
+    mPreviewBuilder.setTargetResolution(new Size(getMeasuredWidth(), height));
+
+    mPreview = mPreviewBuilder.build();
+    mPreview.setSurfaceProvider(mCameraView.getPreviewView().getSurfaceProvider());
+
+    CameraSelector cameraSelector =
+        new CameraSelector.Builder().requireLensFacing(mCameraLensFacing).build();
+    if (getCaptureMode() == SignalCameraView.CaptureMode.IMAGE) {
+      mCamera = mCameraProvider.bindToLifecycle(mCurrentLifecycle, cameraSelector,
+          mImageCapture,
+          mPreview);
+    } else if (getCaptureMode() == SignalCameraView.CaptureMode.VIDEO) {
+      mCamera = mCameraProvider.bindToLifecycle(mCurrentLifecycle, cameraSelector,
+          mVideoCapture,
+          mPreview);
+    } else {
+      mCamera = mCameraProvider.bindToLifecycle(mCurrentLifecycle, cameraSelector,
+          mImageCapture,
+          mVideoCapture, mPreview);
+    }
+
+    setZoomRatio(UNITY_ZOOM_SCALE);
+    mCurrentLifecycle.getLifecycle().addObserver(mCurrentLifecycleObserver);
+    // Enable flash setting in ImageCapture after use cases are created and binded.
+    setFlash(getFlash());
+  }
+
+  public void open() {
+    throw new UnsupportedOperationException(
+        "Explicit open/close of camera not yet supported. Use bindtoLifecycle() instead.");
+  }
+
+  public void close() {
+    throw new UnsupportedOperationException(
+        "Explicit open/close of camera not yet supported. Use bindtoLifecycle() instead.");
+  }
+
+  public void takePicture(Executor executor, OnImageCapturedCallback callback) {
+    if (mImageCapture == null) {
+      return;
+    }
+
+    if (getCaptureMode() == SignalCameraView.CaptureMode.VIDEO) {
+      throw new IllegalStateException("Can not take picture under VIDEO capture mode.");
+    }
+
+    if (callback == null) {
+      throw new IllegalArgumentException("OnImageCapturedCallback should not be empty");
+    }
+
+    mImageCapture.takePicture(executor, callback);
+  }
+
+  public void takePicture(@NonNull ImageCapture.OutputFileOptions outputFileOptions,
+                          @NonNull Executor executor, OnImageSavedCallback callback) {
+    if (mImageCapture == null) {
+      return;
+    }
+
+    if (getCaptureMode() == SignalCameraView.CaptureMode.VIDEO) {
+      throw new IllegalStateException("Can not take picture under VIDEO capture mode.");
+    }
+
+    if (callback == null) {
+      throw new IllegalArgumentException("OnImageSavedCallback should not be empty");
+    }
+
+    outputFileOptions.getMetadata().setReversedHorizontal(mCameraLensFacing != null
+        && mCameraLensFacing == CameraSelector.LENS_FACING_FRONT);
+    mImageCapture.takePicture(outputFileOptions, executor, callback);
+  }
+
+  public void startRecording(VideoCapture.OutputFileOptions outputFileOptions,
+                             Executor executor, final OnVideoSavedCallback callback) {
+    if (mVideoCapture == null) {
+      return;
+    }
+
+    if (getCaptureMode() == SignalCameraView.CaptureMode.IMAGE) {
+      throw new IllegalStateException("Can not record video under IMAGE capture mode.");
+    }
+
+    if (callback == null) {
+      throw new IllegalArgumentException("OnVideoSavedCallback should not be empty");
+    }
+
+    mVideoIsRecording.set(true);
+    mVideoCapture.startRecording(
+        outputFileOptions,
+        executor,
+        new VideoCapture.OnVideoSavedCallback() {
+          @Override
+          public void onVideoSaved(
+              @NonNull VideoCapture.OutputFileResults outputFileResults) {
+            mVideoIsRecording.set(false);
+            callback.onVideoSaved(outputFileResults);
+          }
+
+          @Override
+          public void onError(
+              @VideoCapture.VideoCaptureError int videoCaptureError,
+              @NonNull String message,
+              @Nullable Throwable cause) {
+            mVideoIsRecording.set(false);
+            Logger.e(TAG, message, cause);
+            callback.onError(videoCaptureError, message, cause);
+          }
+        });
+  }
+
+  public void stopRecording() {
+    if (mVideoCapture == null) {
+      return;
+    }
+
+    mVideoCapture.stopRecording();
+  }
+
+  public boolean isRecording() {
+    return mVideoIsRecording.get();
+  }
+
+  // TODO(b/124269166): Rethink how we can handle permissions here.
+  @SuppressLint("MissingPermission")
+  public void setCameraLensFacing(@Nullable Integer lensFacing) {
+    // Setting same lens facing is a no-op, so check for that first
+    if (!Objects.equals(mCameraLensFacing, lensFacing)) {
+      // If we're not bound to a lifecycle, just update the camera that will be opened when we
+      // attach to a lifecycle.
+      mCameraLensFacing = lensFacing;
+
+      if (mCurrentLifecycle != null) {
+        // Re-bind to lifecycle with new camera
+        bindToLifecycle(mCurrentLifecycle);
+      }
+    }
+  }
+
+  @RequiresPermission(permission.CAMERA)
+  public boolean hasCameraWithLensFacing(@CameraSelector.LensFacing int lensFacing) {
+    if (mCameraProvider == null) {
+      return false;
+    }
+    try {
+      return mCameraProvider.hasCamera(
+          new CameraSelector.Builder().requireLensFacing(lensFacing).build());
+    } catch (CameraInfoUnavailableException e) {
+      return false;
+    }
+  }
+
+  @Nullable
+  public Integer getLensFacing() {
+    return mCameraLensFacing;
+  }
+
+  public void toggleCamera() {
+    // TODO(b/124269166): Rethink how we can handle permissions here.
+    @SuppressLint("MissingPermission")
+    Set<Integer> availableCameraLensFacing = getAvailableCameraLensFacing();
+
+    if (availableCameraLensFacing.isEmpty()) {
+      return;
+    }
+
+    if (mCameraLensFacing == null) {
+      setCameraLensFacing(availableCameraLensFacing.iterator().next());
+      return;
+    }
+
+    if (mCameraLensFacing == CameraSelector.LENS_FACING_BACK
+        && availableCameraLensFacing.contains(CameraSelector.LENS_FACING_FRONT)) {
+      setCameraLensFacing(CameraSelector.LENS_FACING_FRONT);
+      return;
+    }
+
+    if (mCameraLensFacing == CameraSelector.LENS_FACING_FRONT
+        && availableCameraLensFacing.contains(CameraSelector.LENS_FACING_BACK)) {
+      setCameraLensFacing(CameraSelector.LENS_FACING_BACK);
+      return;
+    }
+  }
+
+  public float getZoomRatio() {
+    if (mCamera != null) {
+      return mCamera.getCameraInfo().getZoomState().getValue().getZoomRatio();
+    } else {
+      return UNITY_ZOOM_SCALE;
+    }
+  }
+
+  public void setZoomRatio(float zoomRatio) {
+    if (mCamera != null) {
+      ListenableFuture<Void> future = mCamera.getCameraControl().setZoomRatio(
+          zoomRatio);
+      Futures.addCallback(future, new FutureCallback<Void>() {
+        @Override
+        public void onSuccess(@Nullable Void result) {
+        }
+
+        @Override
+        public void onFailure(Throwable t) {
+          // Throw the unexpected error.
+          throw new RuntimeException(t);
+        }
+      }, CameraXExecutors.directExecutor());
+    } else {
+      Logger.e(TAG, "Failed to set zoom ratio");
+    }
+  }
+
+  public float getMinZoomRatio() {
+    if (mCamera != null) {
+      return mCamera.getCameraInfo().getZoomState().getValue().getMinZoomRatio();
+    } else {
+      return UNITY_ZOOM_SCALE;
+    }
+  }
+
+  public float getMaxZoomRatio() {
+    if (mCamera != null) {
+      return mCamera.getCameraInfo().getZoomState().getValue().getMaxZoomRatio();
+    } else {
+      return ZOOM_NOT_SUPPORTED;
+    }
+  }
+
+  public boolean isZoomSupported() {
+    return getMaxZoomRatio() != ZOOM_NOT_SUPPORTED;
+  }
+
+  // TODO(b/124269166): Rethink how we can handle permissions here.
+  @SuppressLint("MissingPermission")
+  private void rebindToLifecycle() {
+    if (mCurrentLifecycle != null) {
+      bindToLifecycle(mCurrentLifecycle);
+    }
+  }
+
+  boolean isBoundToLifecycle() {
+    return mCamera != null;
+  }
+
+  int getRelativeCameraOrientation(boolean compensateForMirroring) {
+    int rotationDegrees = 0;
+    if (mCamera != null) {
+      rotationDegrees =
+          mCamera.getCameraInfo().getSensorRotationDegrees(getDisplaySurfaceRotation());
+      if (compensateForMirroring) {
+        rotationDegrees = (360 - rotationDegrees) % 360;
+      }
+    }
+
+    return rotationDegrees;
+  }
+
+  public void invalidateView() {
+    updateViewInfo();
+  }
+
+  void clearCurrentLifecycle() {
+    if (mCurrentLifecycle != null && mCameraProvider != null) {
+      // Remove previous use cases
+      List<UseCase> toUnbind = new ArrayList<>();
+      if (mImageCapture != null && mCameraProvider.isBound(mImageCapture)) {
+        toUnbind.add(mImageCapture);
+      }
+      if (mVideoCapture != null && mCameraProvider.isBound(mVideoCapture)) {
+        toUnbind.add(mVideoCapture);
+      }
+      if (mPreview != null && mCameraProvider.isBound(mPreview)) {
+        toUnbind.add(mPreview);
+      }
+
+      if (!toUnbind.isEmpty()) {
+        mCameraProvider.unbind(toUnbind.toArray((new UseCase[0])));
+      }
+
+      // Remove surface provider once unbound.
+      if (mPreview != null) {
+        mPreview.setSurfaceProvider(null);
+      }
+    }
+    mCamera = null;
+    mCurrentLifecycle = null;
+  }
+
+  // Update view related information used in use cases
+  private void updateViewInfo() {
+    if (mImageCapture != null) {
+      mImageCapture.setCropAspectRatio(new Rational(getWidth(), getHeight()));
+      mImageCapture.setTargetRotation(getDisplaySurfaceRotation());
+    }
+
+    if (mVideoCapture != null) {
+      mVideoCapture.setTargetRotation(getDisplaySurfaceRotation());
+    }
+  }
+
+  @RequiresPermission(permission.CAMERA)
+  private Set<Integer> getAvailableCameraLensFacing() {
+    // Start with all camera directions
+    Set<Integer> available = new LinkedHashSet<>(Arrays.asList(LensFacingConverter.values()));
+
+    // If we're bound to a lifecycle, remove unavailable cameras
+    if (mCurrentLifecycle != null) {
+      if (!hasCameraWithLensFacing(CameraSelector.LENS_FACING_BACK)) {
+        available.remove(CameraSelector.LENS_FACING_BACK);
+      }
+
+      if (!hasCameraWithLensFacing(CameraSelector.LENS_FACING_FRONT)) {
+        available.remove(CameraSelector.LENS_FACING_FRONT);
+      }
+    }
+
+    return available;
+  }
+
+  @ImageCapture.FlashMode
+  public int getFlash() {
+    return mFlash;
+  }
+
+  // Begin Signal Custom Code Block
+  public boolean hasFlash() {
+    if (mImageCapture == null) {
+      return false;
+    }
+
+    CameraInternal camera = mImageCapture.getCamera();
+
+    if (camera == null) {
+      return false;
+    }
+
+    return camera.getCameraInfoInternal().hasFlashUnit();
+  }
+  // End Signal Custom Code Block
+
+  public void setFlash(@ImageCapture.FlashMode int flash) {
+    this.mFlash = flash;
+
+    if (mImageCapture == null) {
+      // Do nothing if there is no imageCapture
+      return;
+    }
+
+    mImageCapture.setFlashMode(flash);
+  }
+
+  public void enableTorch(boolean torch) {
+    if (mCamera == null) {
+      return;
+    }
+    ListenableFuture<Void> future = mCamera.getCameraControl().enableTorch(torch);
+    Futures.addCallback(future, new FutureCallback<Void>() {
+      @Override
+      public void onSuccess(@Nullable Void result) {
+      }
+
+      @Override
+      public void onFailure(Throwable t) {
+        // Throw the unexpected error.
+        throw new RuntimeException(t);
+      }
+    }, CameraXExecutors.directExecutor());
+  }
+
+  public boolean isTorchOn() {
+    if (mCamera == null) {
+      return false;
+    }
+    return mCamera.getCameraInfo().getTorchState().getValue() == TorchState.ON;
+  }
+
+  public Context getContext() {
+    return mCameraView.getContext();
+  }
+
+  public int getWidth() {
+    return mCameraView.getWidth();
+  }
+
+  public int getHeight() {
+    return mCameraView.getHeight();
+  }
+
+  public int getDisplayRotationDegrees() {
+    return CameraOrientationUtil.surfaceRotationToDegrees(getDisplaySurfaceRotation());
+  }
+
+  protected int getDisplaySurfaceRotation() {
+    return mCameraView.getDisplaySurfaceRotation();
+  }
+
+  private int getMeasuredWidth() {
+    return mCameraView.getMeasuredWidth();
+  }
+
+  private int getMeasuredHeight() {
+    return mCameraView.getMeasuredHeight();
+  }
+
+  @Nullable
+  public Camera getCamera() {
+    return mCamera;
+  }
+
+  @NonNull
+  public SignalCameraView.CaptureMode getCaptureMode() {
+    return mCaptureMode;
+  }
+
+  public void setCaptureMode(@NonNull SignalCameraView.CaptureMode captureMode) {
+    this.mCaptureMode = captureMode;
+    rebindToLifecycle();
+  }
+
+  public long getMaxVideoDuration() {
+    return mMaxVideoDuration;
+  }
+
+  public void setMaxVideoDuration(long duration) {
+    mMaxVideoDuration = duration;
+  }
+
+  public long getMaxVideoSize() {
+    return mMaxVideoSize;
+  }
+
+  public void setMaxVideoSize(long size) {
+    mMaxVideoSize = size;
+  }
+
+  public boolean isPaused() {
+    return false;
+  }
+}

app/src/main/java/org/signal/glide/Log.java

@@ -0,0 +1,58 @@
+package org.signal.glide;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+public final class Log {
+
+  private Log() {}
+
+  public static void v(@NonNull String tag, @NonNull String message) {
+    SignalGlideCodecs.getLogProvider().v(tag, message);
+  }
+
+  public static void d(@NonNull String tag, @NonNull String message) {
+    SignalGlideCodecs.getLogProvider().d(tag, message);
+  }
+
+  public static void i(@NonNull String tag, @NonNull String message) {
+    SignalGlideCodecs.getLogProvider().i(tag, message);
+  }
+
+  public static void w(@NonNull String tag, @NonNull String message) {
+    SignalGlideCodecs.getLogProvider().w(tag, message);
+  }
+
+  public static void e(@NonNull String tag, @NonNull String message) {
+    SignalGlideCodecs.getLogProvider().e(tag, message, null);
+  }
+
+  public static void e(@NonNull String tag, @NonNull String message, @Nullable Throwable throwable) {
+    SignalGlideCodecs.getLogProvider().e(tag, message, throwable);
+  }
+
+  public interface Provider {
+    void v(@NonNull String tag, @NonNull String message);
+    void d(@NonNull String tag, @NonNull String message);
+    void i(@NonNull String tag, @NonNull String message);
+    void w(@NonNull String tag, @NonNull String message);
+    void e(@NonNull String tag, @NonNull String message, @Nullable Throwable throwable);
+
+    Provider EMPTY = new Provider() {
+      @Override
+      public void v(@NonNull String tag, @NonNull String message) { }
+
+      @Override
+      public void d(@NonNull String tag, @NonNull String message) { }
+
+      @Override
+      public void i(@NonNull String tag, @NonNull String message) { }
+
+      @Override
+      public void w(@NonNull String tag, @NonNull String message) { }
+
+      @Override
+      public void e(@NonNull String tag, @NonNull String message, @NonNull Throwable throwable) { }
+    };
+  }
+}

app/src/main/java/org/signal/glide/SignalGlideCodecs.java

@@ -0,0 +1,18 @@
+package org.signal.glide;
+
+import androidx.annotation.NonNull;
+
+public final class SignalGlideCodecs {
+
+  private static Log.Provider logProvider = Log.Provider.EMPTY;
+
+  private SignalGlideCodecs() {}
+
+  public static void setLogProvider(@NonNull Log.Provider provider) {
+    logProvider = provider;
+  }
+
+  public static @NonNull Log.Provider getLogProvider() {
+    return logProvider;
+  }
+}

app/src/main/java/org/signal/glide/apng/APNGDrawable.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng;
+
+import android.content.Context;
+
+import org.signal.glide.apng.decode.APNGDecoder;
+import org.signal.glide.common.FrameAnimationDrawable;
+import org.signal.glide.common.decode.FrameSeqDecoder;
+import org.signal.glide.common.loader.AssetStreamLoader;
+import org.signal.glide.common.loader.FileLoader;
+import org.signal.glide.common.loader.Loader;
+import org.signal.glide.common.loader.ResourceStreamLoader;
+
+/**
+ * @Description: APNGDrawable
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/27
+ */
+public class APNGDrawable extends FrameAnimationDrawable<APNGDecoder> {
+    public APNGDrawable(Loader provider) {
+        super(provider);
+    }
+
+    public APNGDrawable(APNGDecoder decoder) {
+        super(decoder);
+    }
+
+    @Override
+    protected APNGDecoder createFrameSeqDecoder(Loader streamLoader, FrameSeqDecoder.RenderListener listener) {
+        return new APNGDecoder(streamLoader, listener);
+    }
+
+
+    public static APNGDrawable fromAsset(Context context, String assetPath) {
+        AssetStreamLoader assetStreamLoader = new AssetStreamLoader(context, assetPath);
+        return new APNGDrawable(assetStreamLoader);
+    }
+
+    public static APNGDrawable fromFile(String filePath) {
+        FileLoader fileLoader = new FileLoader(filePath);
+        return new APNGDrawable(fileLoader);
+    }
+
+    public static APNGDrawable fromResource(Context context, int resId) {
+        ResourceStreamLoader resourceStreamLoader = new ResourceStreamLoader(context, resId);
+        return new APNGDrawable(resourceStreamLoader);
+    }
+}

app/src/main/java/org/signal/glide/apng/decode/ACTLChunk.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.decode;
+
+import org.signal.glide.apng.io.APNGReader;
+
+import java.io.IOException;
+
+/**
+ * @Description: https://developer.mozilla.org/en-US/docs/Mozilla/Tech/APNG#.27acTL.27:_The_Animation_Control_Chunk
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/27
+ */
+class ACTLChunk extends Chunk {
+    static final int ID = fourCCToInt("acTL");
+    int num_frames;
+    int num_plays;
+
+    @Override
+    void innerParse(APNGReader apngReader) throws IOException {
+        num_frames = apngReader.readInt();
+        num_plays = apngReader.readInt();
+    }
+}

app/src/main/java/org/signal/glide/apng/decode/APNGDecoder.java

@@ -0,0 +1,211 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.decode;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.PorterDuff;
+import android.graphics.Rect;
+
+import org.signal.core.util.logging.Log;
+import org.signal.glide.apng.io.APNGReader;
+import org.signal.glide.apng.io.APNGWriter;
+import org.signal.glide.common.decode.Frame;
+import org.signal.glide.common.decode.FrameSeqDecoder;
+import org.signal.glide.common.io.Reader;
+import org.signal.glide.common.loader.Loader;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @Description: APNG4Android
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-13
+ */
+public class APNGDecoder extends FrameSeqDecoder<APNGReader, APNGWriter> {
+
+    private static final String TAG = Log.tag(APNGDecoder.class);
+
+    private APNGWriter apngWriter;
+    private int mLoopCount;
+    private final Paint paint = new Paint();
+
+
+    private class SnapShot {
+        byte dispose_op;
+        Rect dstRect = new Rect();
+        ByteBuffer byteBuffer;
+    }
+
+    private SnapShot snapShot = new SnapShot();
+
+    /**
+     * @param loader         webp的reader
+     * @param renderListener 渲染的回调
+     */
+    public APNGDecoder(Loader loader, FrameSeqDecoder.RenderListener renderListener) {
+        super(loader, renderListener);
+        paint.setAntiAlias(true);
+    }
+
+    @Override
+    protected APNGWriter getWriter() {
+        if (apngWriter == null) {
+            apngWriter = new APNGWriter();
+        }
+        return apngWriter;
+    }
+
+    @Override
+    protected APNGReader getReader(Reader reader) {
+        return new APNGReader(reader);
+    }
+
+    @Override
+    protected int getLoopCount() {
+        return mLoopCount;
+    }
+
+    @Override
+    protected void release() {
+        snapShot.byteBuffer = null;
+        apngWriter = null;
+    }
+
+
+    @Override
+    protected Rect read(APNGReader reader) throws IOException {
+        List<Chunk> chunks = APNGParser.parse(reader);
+        List<Chunk> otherChunks = new ArrayList<>();
+
+        boolean actl = false;
+        APNGFrame lastFrame = null;
+        byte[] ihdrData = new byte[0];
+        int canvasWidth = 0, canvasHeight = 0;
+        for (Chunk chunk : chunks) {
+            if (chunk instanceof ACTLChunk) {
+                mLoopCount = ((ACTLChunk) chunk).num_plays;
+                actl = true;
+            } else if (chunk instanceof FCTLChunk) {
+                APNGFrame frame = new APNGFrame(reader, (FCTLChunk) chunk);
+                frame.prefixChunks = otherChunks;
+                frame.ihdrData = ihdrData;
+                frames.add(frame);
+                lastFrame = frame;
+            } else if (chunk instanceof FDATChunk) {
+                if (lastFrame != null) {
+                    lastFrame.imageChunks.add(chunk);
+                }
+            } else if (chunk instanceof IDATChunk) {
+                if (!actl) {
+                    //如果为非APNG图片，则只解码PNG
+                    Frame frame = new StillFrame(reader);
+                    frame.frameWidth = canvasWidth;
+                    frame.frameHeight = canvasHeight;
+                    frames.add(frame);
+                    mLoopCount = 1;
+                    break;
+                }
+                if (lastFrame != null) {
+                    lastFrame.imageChunks.add(chunk);
+                }
+
+            } else if (chunk instanceof IHDRChunk) {
+                canvasWidth = ((IHDRChunk) chunk).width;
+                canvasHeight = ((IHDRChunk) chunk).height;
+                ihdrData = ((IHDRChunk) chunk).data;
+            } else if (!(chunk instanceof IENDChunk)) {
+                otherChunks.add(chunk);
+            }
+        }
+        frameBuffer = ByteBuffer.allocate((canvasWidth * canvasHeight / (sampleSize * sampleSize) + 1) * 4);
+        snapShot.byteBuffer = ByteBuffer.allocate((canvasWidth * canvasHeight / (sampleSize * sampleSize) + 1) * 4);
+        return new Rect(0, 0, canvasWidth, canvasHeight);
+    }
+
+    @Override
+    protected void renderFrame(Frame frame) {
+        if (frame == null || fullRect == null) {
+            return;
+        }
+        try {
+            Bitmap bitmap = obtainBitmap(fullRect.width() / sampleSize, fullRect.height() / sampleSize);
+            Canvas canvas = cachedCanvas.get(bitmap);
+            if (canvas == null) {
+                canvas = new Canvas(bitmap);
+                cachedCanvas.put(bitmap, canvas);
+            }
+            if (frame instanceof APNGFrame) {
+                // 从缓存中恢复当前帧
+                frameBuffer.rewind();
+                bitmap.copyPixelsFromBuffer(frameBuffer);
+                // 开始绘制前，处理快照中的设定
+                if (this.frameIndex == 0) {
+                    canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);
+                } else {
+                    canvas.save();
+                    canvas.clipRect(snapShot.dstRect);
+                    switch (snapShot.dispose_op) {
+                        // 从快照中恢复上一帧之前的显示内容
+                        case FCTLChunk.APNG_DISPOSE_OP_PREVIOUS:
+                            snapShot.byteBuffer.rewind();
+                            bitmap.copyPixelsFromBuffer(snapShot.byteBuffer);
+                            break;
+                        // 清空上一帧所画区域
+                        case FCTLChunk.APNG_DISPOSE_OP_BACKGROUND:
+                            canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);
+                            break;
+                        // 什么都不做
+                        case FCTLChunk.APNG_DISPOSE_OP_NON:
+                        default:
+                            break;
+                    }
+                    canvas.restore();
+                }
+
+                // 然后根据dispose设定传递到快照信息中
+                if (((APNGFrame) frame).dispose_op == FCTLChunk.APNG_DISPOSE_OP_PREVIOUS) {
+                    if (snapShot.dispose_op != FCTLChunk.APNG_DISPOSE_OP_PREVIOUS) {
+                        snapShot.byteBuffer.rewind();
+                        bitmap.copyPixelsToBuffer(snapShot.byteBuffer);
+                    }
+                }
+
+                snapShot.dispose_op = ((APNGFrame) frame).dispose_op;
+                canvas.save();
+                if (((APNGFrame) frame).blend_op == FCTLChunk.APNG_BLEND_OP_SOURCE) {
+                    canvas.clipRect(
+                            frame.frameX / sampleSize,
+                            frame.frameY / sampleSize,
+                            (frame.frameX + frame.frameWidth) / sampleSize,
+                            (frame.frameY + frame.frameHeight) / sampleSize);
+                    canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);
+                }
+
+
+                snapShot.dstRect.set(frame.frameX / sampleSize,
+                        frame.frameY / sampleSize,
+                        (frame.frameX + frame.frameWidth) / sampleSize,
+                        (frame.frameY + frame.frameHeight) / sampleSize);
+                canvas.restore();
+            }
+            //开始真正绘制当前帧的内容
+            Bitmap inBitmap = obtainBitmap(frame.frameWidth, frame.frameHeight);
+            recycleBitmap(frame.draw(canvas, paint, sampleSize, inBitmap, getWriter()));
+            recycleBitmap(inBitmap);
+            frameBuffer.rewind();
+            bitmap.copyPixelsToBuffer(frameBuffer);
+            recycleBitmap(bitmap);
+        } catch (Throwable t) {
+            Log.e(TAG, "Failed to render!", t);
+        }
+    }
+}

app/src/main/java/org/signal/glide/apng/decode/APNGFrame.java

@@ -0,0 +1,147 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.decode;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+
+import org.signal.glide.apng.io.APNGReader;
+import org.signal.glide.apng.io.APNGWriter;
+import org.signal.glide.common.decode.Frame;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.zip.CRC32;
+
+/**
+ * @Description: APNG4Android
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-13
+ */
+public class APNGFrame extends Frame<APNGReader, APNGWriter> {
+    public final byte blend_op;
+    public final byte dispose_op;
+    byte[] ihdrData;
+    List<Chunk> imageChunks = new ArrayList<>();
+    List<Chunk> prefixChunks = new ArrayList<>();
+    private static final byte[] sPNGSignatures = {(byte) 137, 80, 78, 71, 13, 10, 26, 10};
+    private static final byte[] sPNGEndChunk = {0, 0, 0, 0, 0x49, 0x45, 0x4E, 0x44, (byte) 0xAE, 0x42, 0x60, (byte) 0x82};
+
+    private static ThreadLocal<CRC32> sCRC32 = new ThreadLocal<>();
+
+    private CRC32 getCRC32() {
+        CRC32 crc32 = sCRC32.get();
+        if (crc32 == null) {
+            crc32 = new CRC32();
+            sCRC32.set(crc32);
+        }
+        return crc32;
+    }
+
+    public APNGFrame(APNGReader reader, FCTLChunk fctlChunk) {
+        super(reader);
+        blend_op = fctlChunk.blend_op;
+        dispose_op = fctlChunk.dispose_op;
+        frameDuration = fctlChunk.delay_num * 1000 / (fctlChunk.delay_den == 0 ? 100 : fctlChunk.delay_den);
+        frameWidth = fctlChunk.width;
+        frameHeight = fctlChunk.height;
+        frameX = fctlChunk.x_offset;
+        frameY = fctlChunk.y_offset;
+    }
+
+    private int encode(APNGWriter apngWriter) throws IOException {
+        int fileSize = 8 + 13 + 12;
+
+        //prefixChunks
+        for (Chunk chunk : prefixChunks) {
+            fileSize += chunk.length + 12;
+        }
+
+        //imageChunks
+        for (Chunk chunk : imageChunks) {
+            if (chunk instanceof IDATChunk) {
+                fileSize += chunk.length + 12;
+            } else if (chunk instanceof FDATChunk) {
+                fileSize += chunk.length + 8;
+            }
+        }
+        fileSize += sPNGEndChunk.length;
+        apngWriter.reset(fileSize);
+        apngWriter.putBytes(sPNGSignatures);
+        //IHDR Chunk
+        apngWriter.writeInt(13);
+        int start = apngWriter.position();
+        apngWriter.writeFourCC(IHDRChunk.ID);
+        apngWriter.writeInt(frameWidth);
+        apngWriter.writeInt(frameHeight);
+        apngWriter.putBytes(ihdrData);
+        CRC32 crc32 = getCRC32();
+        crc32.reset();
+        crc32.update(apngWriter.toByteArray(), start, 17);
+        apngWriter.writeInt((int) crc32.getValue());
+
+        //prefixChunks
+        for (Chunk chunk : prefixChunks) {
+            if (chunk instanceof IENDChunk) {
+                continue;
+            }
+            reader.reset();
+            reader.skip(chunk.offset);
+            reader.read(apngWriter.toByteArray(), apngWriter.position(), chunk.length + 12);
+            apngWriter.skip(chunk.length + 12);
+        }
+        //imageChunks
+        for (Chunk chunk : imageChunks) {
+            if (chunk instanceof IDATChunk) {
+                reader.reset();
+                reader.skip(chunk.offset);
+                reader.read(apngWriter.toByteArray(), apngWriter.position(), chunk.length + 12);
+                apngWriter.skip(chunk.length + 12);
+            } else if (chunk instanceof FDATChunk) {
+                apngWriter.writeInt(chunk.length - 4);
+                start = apngWriter.position();
+                apngWriter.writeFourCC(IDATChunk.ID);
+
+                reader.reset();
+                // skip to fdat data position
+                reader.skip(chunk.offset + 4 + 4 + 4);
+                reader.read(apngWriter.toByteArray(), apngWriter.position(), chunk.length - 4);
+
+                apngWriter.skip(chunk.length - 4);
+                crc32.reset();
+                crc32.update(apngWriter.toByteArray(), start, chunk.length);
+                apngWriter.writeInt((int) crc32.getValue());
+            }
+        }
+        //endChunk
+        apngWriter.putBytes(sPNGEndChunk);
+        return fileSize;
+    }
+
+
+    @Override
+    public Bitmap draw(Canvas canvas, Paint paint, int sampleSize, Bitmap reusedBitmap, APNGWriter writer) {
+        try {
+            int length = encode(writer);
+            BitmapFactory.Options options = new BitmapFactory.Options();
+            options.inJustDecodeBounds = false;
+            options.inSampleSize = sampleSize;
+            options.inMutable = true;
+            options.inBitmap = reusedBitmap;
+            byte[] bytes = writer.toByteArray();
+            Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0, length, options);
+            assert bitmap != null;
+            canvas.drawBitmap(bitmap, (float) frameX / sampleSize, (float) frameY / sampleSize, paint);
+            return bitmap;
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}

app/src/main/java/org/signal/glide/apng/decode/APNGParser.java

@@ -0,0 +1,143 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.decode;
+
+import android.content.Context;
+
+import org.signal.glide.apng.io.APNGReader;
+import org.signal.glide.common.io.Reader;
+import org.signal.glide.common.io.StreamReader;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @link {https://www.w3.org/TR/PNG/#5PNG-file-signature}
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-13
+ */
+public class APNGParser {
+    static class FormatException extends IOException {
+        FormatException() {
+            super("APNG Format error");
+        }
+    }
+
+    public static boolean isAPNG(String filePath) {
+        InputStream inputStream = null;
+        try {
+            inputStream = new FileInputStream(filePath);
+            return isAPNG(new StreamReader(inputStream));
+        } catch (Exception e) {
+            return false;
+        } finally {
+            if (inputStream != null) {
+                try {
+                    inputStream.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+
+    public static boolean isAPNG(Context context, String assetPath) {
+        InputStream inputStream = null;
+        try {
+            inputStream = context.getAssets().open(assetPath);
+            return isAPNG(new StreamReader(inputStream));
+        } catch (Exception e) {
+            return false;
+        } finally {
+            if (inputStream != null) {
+                try {
+                    inputStream.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+
+    public static boolean isAPNG(Context context, int resId) {
+        InputStream inputStream = null;
+        try {
+            inputStream = context.getResources().openRawResource(resId);
+            return isAPNG(new StreamReader(inputStream));
+        } catch (Exception e) {
+            return false;
+        } finally {
+            if (inputStream != null) {
+                try {
+                    inputStream.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+
+    public static boolean isAPNG(Reader in) {
+        APNGReader reader = (in instanceof APNGReader) ? (APNGReader) in : new APNGReader(in);
+        try {
+            if (!reader.matchFourCC("\u0089PNG") || !reader.matchFourCC("\r\n\u001a\n")) {
+                throw new FormatException();
+            }
+            while (reader.available() > 0) {
+                Chunk chunk = parseChunk(reader);
+                if (chunk instanceof ACTLChunk) {
+                    return true;
+                }
+            }
+        } catch (IOException e) {
+            return false;
+        }
+        return false;
+    }
+
+    public static List<Chunk> parse(APNGReader reader) throws IOException {
+        if (!reader.matchFourCC("\u0089PNG") || !reader.matchFourCC("\r\n\u001a\n")) {
+            throw new FormatException();
+        }
+
+        List<Chunk> chunks = new ArrayList<>();
+        while (reader.available() > 0) {
+            chunks.add(parseChunk(reader));
+        }
+        return chunks;
+    }
+
+    private static Chunk parseChunk(APNGReader reader) throws IOException {
+        int offset = reader.position();
+        int size = reader.readInt();
+        int fourCC = reader.readFourCC();
+        Chunk chunk;
+        if (fourCC == ACTLChunk.ID) {
+            chunk = new ACTLChunk();
+        } else if (fourCC == FCTLChunk.ID) {
+            chunk = new FCTLChunk();
+        } else if (fourCC == FDATChunk.ID) {
+            chunk = new FDATChunk();
+        } else if (fourCC == IDATChunk.ID) {
+            chunk = new IDATChunk();
+        } else if (fourCC == IENDChunk.ID) {
+            chunk = new IENDChunk();
+        } else if (fourCC == IHDRChunk.ID) {
+            chunk = new IHDRChunk();
+        } else {
+            chunk = new Chunk();
+        }
+        chunk.offset = offset;
+        chunk.fourcc = fourCC;
+        chunk.length = size;
+        chunk.parse(reader);
+        chunk.crc = reader.readInt();
+        return chunk;
+    }
+}

app/src/main/java/org/signal/glide/apng/decode/Chunk.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.decode;
+
+import android.text.TextUtils;
+
+import org.signal.glide.apng.io.APNGReader;
+
+import java.io.IOException;
+
+/**
+ * @Description: Length (长度)	4字节	指定数据块中数据域的长度，其长度不超过(231－1)字节
+ * Chunk Type Code (数据块类型码)	4字节	数据块类型码由ASCII字母(A-Z和a-z)组成
+ * Chunk Data (数据块数据)	可变长度	存储按照Chunk Type Code指定的数据
+ * CRC (循环冗余检测)	4字节	存储用来检测是否有错误的循环冗余码
+ * @Link https://www.w3.org/TR/PNG
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/27
+ */
+class Chunk {
+    int length;
+    int fourcc;
+    int crc;
+    int offset;
+
+    static int fourCCToInt(String fourCC) {
+        if (TextUtils.isEmpty(fourCC) || fourCC.length() != 4) {
+            return 0xbadeffff;
+        }
+        return (fourCC.charAt(0) & 0xff)
+                | (fourCC.charAt(1) & 0xff) << 8
+                | (fourCC.charAt(2) & 0xff) << 16
+                | (fourCC.charAt(3) & 0xff) << 24
+                ;
+    }
+
+    void parse(APNGReader reader) throws IOException {
+        int available = reader.available();
+        innerParse(reader);
+        int offset = available - reader.available();
+        if (offset > length) {
+            throw new IOException("Out of chunk area");
+        } else if (offset < length) {
+            reader.skip(length - offset);
+        }
+    }
+
+    void innerParse(APNGReader reader) throws IOException {
+    }
+}

app/src/main/java/org/signal/glide/apng/decode/FCTLChunk.java

@@ -0,0 +1,121 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.decode;
+
+import org.signal.glide.apng.io.APNGReader;
+
+import java.io.IOException;
+
+/**
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/27
+ * @see {link=https://developer.mozilla.org/en-US/docs/Mozilla/Tech/APNG#.27fcTL.27:_The_Frame_Control_Chunk}
+ */
+class FCTLChunk extends Chunk {
+    static final int ID = fourCCToInt("fcTL");
+    int sequence_number;
+    /**
+     * x_offset >= 0
+     * y_offset >= 0
+     * width > 0
+     * height > 0
+     * x_offset + width <= 'IHDR' width
+     * y_offset + height <= 'IHDR' height
+     */
+    /**
+     * Width of the following frame.
+     */
+    int width;
+    /**
+     * Height of the following frame.
+     */
+    int height;
+    /**
+     * X position at which to render the following frame.
+     */
+    int x_offset;
+    /**
+     * Y position at which to render the following frame.
+     */
+    int y_offset;
+
+    /**
+     * The delay_num and delay_den parameters together specify a fraction indicating the time to
+     * display the current frame, in seconds. If the denominator is 0, it is to be treated as if it
+     * were 100 (that is, delay_num then specifies 1/100ths of a second).
+     * If the the value of the numerator is 0 the decoder should render the next frame as quickly as
+     * possible, though viewers may impose a reasonable lower bound.
+     * <p>
+     * Frame timings should be independent of the time required for decoding and display of each frame,
+     * so that animations will run at the same rate regardless of the performance of the decoder implementation.
+     */
+
+    /**
+     * Frame delay fraction numerator.
+     */
+    short delay_num;
+
+    /**
+     * Frame delay fraction denominator.
+     */
+    short delay_den;
+
+    /**
+     * Type of frame area disposal to be done after rendering this frame.
+     * dispose_op specifies how the output buffer should be changed at the end of the delay (before rendering the next frame).
+     * If the first 'fcTL' chunk uses a dispose_op of APNG_DISPOSE_OP_PREVIOUS it should be treated as APNG_DISPOSE_OP_BACKGROUND.
+     */
+    byte dispose_op;
+
+    /**
+     * Type of frame area rendering for this frame.
+     */
+    byte blend_op;
+
+    /**
+     * No disposal is done on this frame before rendering the next; the contents of the output buffer are left as is.
+     */
+    static final int APNG_DISPOSE_OP_NON = 0;
+
+    /**
+     * The frame's region of the output buffer is to be cleared to fully transparent black before rendering the next frame.
+     */
+    static final int APNG_DISPOSE_OP_BACKGROUND = 1;
+
+    /**
+     * The frame's region of the output buffer is to be reverted to the previous contents before rendering the next frame.
+     */
+    static final int APNG_DISPOSE_OP_PREVIOUS = 2;
+
+    /**
+     * blend_op<code> specifies whether the frame is to be alpha blended into the current output buffer content,
+     * or whether it should completely replace its region in the output buffer.
+     */
+    /**
+     * All color components of the frame, including alpha, overwrite the current contents of the frame's output buffer region.
+     */
+    static final int APNG_BLEND_OP_SOURCE = 0;
+
+    /**
+     * The frame should be composited onto the output buffer based on its alpha,
+     * using a simple OVER operation as described in the Alpha Channel Processing section of the Extensions
+     * to the PNG Specification, Version 1.2.0. Note that the second variation of the sample code is applicable.
+     */
+    static final int APNG_BLEND_OP_OVER = 1;
+
+    @Override
+    void innerParse(APNGReader reader) throws IOException {
+        sequence_number = reader.readInt();
+        width = reader.readInt();
+        height = reader.readInt();
+        x_offset = reader.readInt();
+        y_offset = reader.readInt();
+        delay_num = reader.readShort();
+        delay_den = reader.readShort();
+        dispose_op = reader.peek();
+        blend_op = reader.peek();
+    }
+}

app/src/main/java/org/signal/glide/apng/decode/FDATChunk.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.decode;
+
+import org.signal.glide.apng.io.APNGReader;
+
+import java.io.IOException;
+
+/**
+ * @Description: https://developer.mozilla.org/en-US/docs/Mozilla/Tech/APNG#.27fdAT.27:_The_Frame_Data_Chunk
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/27
+ */
+class FDATChunk extends Chunk {
+    static final int ID = fourCCToInt("fdAT");
+    int sequence_number;
+
+    @Override
+    void innerParse(APNGReader reader) throws IOException {
+        sequence_number = reader.readInt();
+    }
+}

app/src/main/java/org/signal/glide/apng/decode/IDATChunk.java

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.decode;
+
+/**
+ * @Description: 作用描述
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/27
+ */
+class IDATChunk extends Chunk {
+    static final int ID = fourCCToInt("IDAT");
+}

app/src/main/java/org/signal/glide/apng/decode/IENDChunk.java

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.decode;
+
+/**
+ * @Description: 作用描述
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/27
+ */
+class IENDChunk extends Chunk {
+    static final int ID = Chunk.fourCCToInt("IEND");
+}

app/src/main/java/org/signal/glide/apng/decode/IHDRChunk.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.decode;
+
+import org.signal.glide.apng.io.APNGReader;
+
+import java.io.IOException;
+
+/**
+ * The IHDR chunk shall be the first chunk in the PNG datastream. It contains:
+ * <p>
+ * Width	4 bytes
+ * Height	4 bytes
+ * Bit depth	1 byte
+ * Colour type	1 byte
+ * Compression method	1 byte
+ * Filter method	1 byte
+ * Interlace method	1 byte
+ *
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/27
+ */
+class IHDRChunk extends Chunk {
+    static final int ID = fourCCToInt("IHDR");
+    /**
+     * 图像宽度，以像素为单位
+     */
+    int width;
+    /**
+     * 图像高度，以像素为单位
+     */
+    int height;
+
+    byte[] data = new byte[5];
+
+    @Override
+    void innerParse(APNGReader reader) throws IOException {
+        width = reader.readInt();
+        height = reader.readInt();
+        reader.read(data, 0, data.length);
+    }
+}

app/src/main/java/org/signal/glide/apng/decode/StillFrame.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.decode;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+
+import org.signal.glide.apng.io.APNGReader;
+import org.signal.glide.apng.io.APNGWriter;
+import org.signal.glide.common.decode.Frame;
+
+import java.io.IOException;
+
+/**
+ * @Description: APNG4Android
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-13
+ */
+public class StillFrame extends Frame<APNGReader, APNGWriter> {
+
+    public StillFrame(APNGReader reader) {
+        super(reader);
+    }
+
+    @Override
+    public Bitmap draw(Canvas canvas, Paint paint, int sampleSize, Bitmap reusedBitmap, APNGWriter writer) {
+        BitmapFactory.Options options = new BitmapFactory.Options();
+        options.inJustDecodeBounds = false;
+        options.inSampleSize = sampleSize;
+        options.inMutable = true;
+        options.inBitmap = reusedBitmap;
+        Bitmap bitmap = null;
+        try {
+            reader.reset();
+            bitmap = BitmapFactory.decodeStream(reader.toInputStream(), null, options);
+            assert bitmap != null;
+            paint.setXfermode(null);
+            canvas.drawBitmap(bitmap, 0, 0, paint);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return bitmap;
+    }
+}

app/src/main/java/org/signal/glide/apng/io/APNGReader.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.io;
+
+import android.text.TextUtils;
+
+import org.signal.glide.common.io.FilterReader;
+import org.signal.glide.common.io.Reader;
+
+import java.io.IOException;
+
+/**
+ * @Description: APNGReader
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-13
+ */
+public class APNGReader extends FilterReader {
+    private static ThreadLocal<byte[]> __intBytes = new ThreadLocal<>();
+
+
+    protected static byte[] ensureBytes() {
+        byte[] bytes = __intBytes.get();
+        if (bytes == null) {
+            bytes = new byte[4];
+            __intBytes.set(bytes);
+        }
+        return bytes;
+    }
+
+    public APNGReader(Reader in) {
+        super(in);
+    }
+
+    public int readInt() throws IOException {
+        byte[] buf = ensureBytes();
+        read(buf, 0, 4);
+        return buf[3] & 0xFF |
+                (buf[2] & 0xFF) << 8 |
+                (buf[1] & 0xFF) << 16 |
+                (buf[0] & 0xFF) << 24;
+    }
+
+    public short readShort() throws IOException {
+        byte[] buf = ensureBytes();
+        read(buf, 0, 2);
+        return (short) (buf[1] & 0xFF |
+                (buf[0] & 0xFF) << 8);
+    }
+
+    /**
+     * @return read FourCC and match chars
+     */
+    public boolean matchFourCC(String chars) throws IOException {
+        if (TextUtils.isEmpty(chars) || chars.length() != 4) {
+            return false;
+        }
+        int fourCC = readFourCC();
+        for (int i = 0; i < 4; i++) {
+            if (((fourCC >> (i * 8)) & 0xff) != chars.charAt(i)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public int readFourCC() throws IOException {
+        byte[] buf = ensureBytes();
+        read(buf, 0, 4);
+        return buf[0] & 0xff | (buf[1] & 0xff) << 8 | (buf[2] & 0xff) << 16 | (buf[3] & 0xff) << 24;
+    }
+}

app/src/main/java/org/signal/glide/apng/io/APNGWriter.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.apng.io;
+
+import org.signal.glide.common.io.ByteBufferWriter;
+
+import java.nio.ByteOrder;
+
+/**
+ * @Description: APNGWriter
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-13
+ */
+public class APNGWriter extends ByteBufferWriter {
+    public APNGWriter() {
+        super();
+    }
+
+    public void writeFourCC(int val) {
+        putByte((byte) (val & 0xff));
+        putByte((byte) ((val >> 8) & 0xff));
+        putByte((byte) ((val >> 16) & 0xff));
+        putByte((byte) ((val >> 24) & 0xff));
+    }
+
+    public void writeInt(int val) {
+        putByte((byte) ((val >> 24) & 0xff));
+        putByte((byte) ((val >> 16) & 0xff));
+        putByte((byte) ((val >> 8) & 0xff));
+        putByte((byte) (val & 0xff));
+    }
+
+    @Override
+    public void reset(int size) {
+        super.reset(size);
+        this.byteBuffer.order(ByteOrder.BIG_ENDIAN);
+    }
+}

app/src/main/java/org/signal/glide/common/FrameAnimationDrawable.java

@@ -0,0 +1,253 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.ColorFilter;
+import android.graphics.DrawFilter;
+import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.graphics.PaintFlagsDrawFilter;
+import android.graphics.PixelFormat;
+import android.graphics.drawable.Drawable;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.Message;
+
+import androidx.annotation.NonNull;
+import androidx.vectordrawable.graphics.drawable.Animatable2Compat;
+
+import org.signal.core.util.logging.Log;
+import org.signal.glide.common.decode.FrameSeqDecoder;
+import org.signal.glide.common.loader.Loader;
+
+import java.nio.ByteBuffer;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * @Description: Frame animation drawable
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/27
+ */
+public abstract class FrameAnimationDrawable<Decoder extends FrameSeqDecoder> extends Drawable implements Animatable2Compat, FrameSeqDecoder.RenderListener {
+    private static final String TAG = Log.tag(FrameAnimationDrawable.class);
+    private final Paint paint = new Paint();
+    private final Decoder frameSeqDecoder;
+    private DrawFilter drawFilter = new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
+    private Matrix matrix = new Matrix();
+    private Set<AnimationCallback> animationCallbacks = new HashSet<>();
+    private Bitmap bitmap;
+    private static final int MSG_ANIMATION_START = 1;
+    private static final int MSG_ANIMATION_END = 2;
+    private Handler uiHandler = new Handler(Looper.getMainLooper()) {
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case MSG_ANIMATION_START:
+                    for (AnimationCallback animationCallback : animationCallbacks) {
+                        animationCallback.onAnimationStart(FrameAnimationDrawable.this);
+                    }
+                    break;
+                case MSG_ANIMATION_END:
+                    for (AnimationCallback animationCallback : animationCallbacks) {
+                        animationCallback.onAnimationEnd(FrameAnimationDrawable.this);
+                    }
+                    break;
+            }
+        }
+    };
+    private Runnable invalidateRunnable = new Runnable() {
+        @Override
+        public void run() {
+            invalidateSelf();
+        }
+    };
+    private boolean autoPlay = true;
+
+    public FrameAnimationDrawable(Decoder frameSeqDecoder) {
+        paint.setAntiAlias(true);
+        this.frameSeqDecoder = frameSeqDecoder;
+    }
+
+    public FrameAnimationDrawable(Loader provider) {
+        paint.setAntiAlias(true);
+        this.frameSeqDecoder = createFrameSeqDecoder(provider, this);
+    }
+
+    public void setAutoPlay(boolean autoPlay) {
+        this.autoPlay = autoPlay;
+    }
+
+    protected abstract Decoder createFrameSeqDecoder(Loader streamLoader, FrameSeqDecoder.RenderListener listener);
+
+    /**
+     * @param loopLimit <=0为无限播放,>0为实际播放次数
+     */
+    public void setLoopLimit(int loopLimit) {
+        frameSeqDecoder.setLoopLimit(loopLimit);
+    }
+
+    public void reset() {
+        frameSeqDecoder.reset();
+    }
+
+    public void pause() {
+        frameSeqDecoder.pause();
+    }
+
+    public void resume() {
+        frameSeqDecoder.resume();
+    }
+
+    public boolean isPaused() {
+        return frameSeqDecoder.isPaused();
+    }
+
+    @Override
+    public void start() {
+        if (autoPlay) {
+            frameSeqDecoder.start();
+        } else {
+            this.frameSeqDecoder.addRenderListener(this);
+            if (!this.frameSeqDecoder.isRunning()) {
+                this.frameSeqDecoder.start();
+            }
+        }
+    }
+
+    @Override
+    public void stop() {
+        if (autoPlay) {
+            frameSeqDecoder.stop();
+        } else {
+            this.frameSeqDecoder.removeRenderListener(this);
+            this.frameSeqDecoder.stopIfNeeded();
+        }
+    }
+
+    @Override
+    public boolean isRunning() {
+        return frameSeqDecoder.isRunning();
+    }
+
+    @Override
+    public void draw(Canvas canvas) {
+        if (bitmap == null || bitmap.isRecycled()) {
+            return;
+        }
+        canvas.setDrawFilter(drawFilter);
+        canvas.drawBitmap(bitmap, matrix, paint);
+    }
+
+    @Override
+    public void setBounds(int left, int top, int right, int bottom) {
+        super.setBounds(left, top, right, bottom);
+        boolean sampleSizeChanged = frameSeqDecoder.setDesiredSize(getBounds().width(), getBounds().height());
+        matrix.setScale(
+                1.0f * getBounds().width() * frameSeqDecoder.getSampleSize() / frameSeqDecoder.getBounds().width(),
+                1.0f * getBounds().height() * frameSeqDecoder.getSampleSize() / frameSeqDecoder.getBounds().height());
+
+        if (sampleSizeChanged)
+            this.bitmap = Bitmap.createBitmap(
+                    frameSeqDecoder.getBounds().width() / frameSeqDecoder.getSampleSize(),
+                    frameSeqDecoder.getBounds().height() / frameSeqDecoder.getSampleSize(),
+                    Bitmap.Config.ARGB_8888);
+    }
+
+    @Override
+    public void setAlpha(int alpha) {
+        paint.setAlpha(alpha);
+    }
+
+    @Override
+    public void setColorFilter(ColorFilter colorFilter) {
+        paint.setColorFilter(colorFilter);
+    }
+
+    @Override
+    public int getOpacity() {
+        return PixelFormat.TRANSLUCENT;
+    }
+
+    @Override
+    public void onStart() {
+        Message.obtain(uiHandler, MSG_ANIMATION_START).sendToTarget();
+    }
+
+    @Override
+    public void onRender(ByteBuffer byteBuffer) {
+        if (!isRunning()) {
+            return;
+        }
+        if (this.bitmap == null || this.bitmap.isRecycled()) {
+            this.bitmap = Bitmap.createBitmap(
+                    frameSeqDecoder.getBounds().width() / frameSeqDecoder.getSampleSize(),
+                    frameSeqDecoder.getBounds().height() / frameSeqDecoder.getSampleSize(),
+                    Bitmap.Config.ARGB_8888);
+        }
+        byteBuffer.rewind();
+        if (byteBuffer.remaining() < this.bitmap.getByteCount()) {
+            Log.e(TAG, "onRender:Buffer not large enough for pixels");
+            return;
+        }
+        this.bitmap.copyPixelsFromBuffer(byteBuffer);
+        uiHandler.post(invalidateRunnable);
+    }
+
+    @Override
+    public void onEnd() {
+        Message.obtain(uiHandler, MSG_ANIMATION_END).sendToTarget();
+    }
+
+    @Override
+    public boolean setVisible(boolean visible, boolean restart) {
+        if (this.autoPlay) {
+            if (visible) {
+                if (!isRunning()) {
+                    start();
+                }
+            } else if (isRunning()) {
+                stop();
+            }
+        }
+        return super.setVisible(visible, restart);
+    }
+
+    @Override
+    public int getIntrinsicWidth() {
+        try {
+            return frameSeqDecoder.getBounds().width();
+        } catch (Exception exception) {
+            return 0;
+        }
+    }
+
+    @Override
+    public int getIntrinsicHeight() {
+        try {
+            return frameSeqDecoder.getBounds().height();
+        } catch (Exception exception) {
+            return 0;
+        }
+    }
+
+    @Override
+    public void registerAnimationCallback(@NonNull AnimationCallback animationCallback) {
+        this.animationCallbacks.add(animationCallback);
+    }
+
+    @Override
+    public boolean unregisterAnimationCallback(@NonNull AnimationCallback animationCallback) {
+        return this.animationCallbacks.remove(animationCallback);
+    }
+
+    @Override
+    public void clearAnimationCallbacks() {
+        this.animationCallbacks.clear();
+    }
+}

app/src/main/java/org/signal/glide/common/decode/Frame.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.decode;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+
+import org.signal.glide.common.io.Reader;
+import org.signal.glide.common.io.Writer;
+
+/**
+ * @Description: One frame in an animation
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-13
+ */
+public abstract class Frame<R extends Reader, W extends Writer> {
+    protected final R reader;
+    public int frameWidth;
+    public int frameHeight;
+    public int frameX;
+    public int frameY;
+    public int frameDuration;
+
+    public Frame(R reader) {
+        this.reader = reader;
+    }
+
+    public abstract Bitmap draw(Canvas canvas, Paint paint, int sampleSize, Bitmap reusedBitmap, W writer);
+}

app/src/main/java/org/signal/glide/common/decode/FrameSeqDecoder.java

@@ -0,0 +1,539 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.decode;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Rect;
+import android.os.Build;
+import android.os.Handler;
+import android.os.Looper;
+
+import androidx.annotation.Nullable;
+import androidx.annotation.WorkerThread;
+
+import org.signal.core.util.logging.Log;
+import org.signal.glide.common.executor.FrameDecoderExecutor;
+import org.signal.glide.common.io.Reader;
+import org.signal.glide.common.io.Writer;
+import org.signal.glide.common.loader.Loader;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.WeakHashMap;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.locks.LockSupport;
+
+/**
+ * @Description: Abstract Frame Animation Decoder
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/27
+ */
+public abstract class FrameSeqDecoder<R extends Reader, W extends Writer> {
+    private static final String TAG = Log.tag(FrameSeqDecoder.class);
+    private final int taskId;
+
+    private final Loader mLoader;
+    private final Handler workerHandler;
+    protected List<Frame> frames = new ArrayList<>();
+    protected int frameIndex = -1;
+    private int playCount;
+    private Integer loopLimit = null;
+    private Set<RenderListener> renderListeners = new HashSet<>();
+    private AtomicBoolean paused = new AtomicBoolean(true);
+    private static final Rect RECT_EMPTY = new Rect();
+    private Runnable renderTask = new Runnable() {
+        @Override
+        public void run() {
+            if (paused.get()) {
+                return;
+            }
+            if (canStep()) {
+                long start = System.currentTimeMillis();
+                long delay = step();
+                long cost = System.currentTimeMillis() - start;
+                workerHandler.postDelayed(this, Math.max(0, delay - cost));
+                for (RenderListener renderListener : renderListeners) {
+                    renderListener.onRender(frameBuffer);
+                }
+            } else {
+                stop();
+            }
+        }
+    };
+    protected int sampleSize = 1;
+
+    private Set<Bitmap> cacheBitmaps = new HashSet<>();
+    protected Map<Bitmap, Canvas> cachedCanvas = new WeakHashMap<>();
+    protected ByteBuffer frameBuffer;
+    protected volatile Rect fullRect;
+    private W mWriter = getWriter();
+    private R mReader = null;
+
+    /**
+     * If played all the needed
+     */
+    private boolean finished = false;
+
+    private enum State {
+        IDLE,
+        RUNNING,
+        INITIALIZING,
+        FINISHING,
+    }
+
+    private volatile State mState = State.IDLE;
+
+    public Loader getLoader() {
+        return mLoader;
+    }
+
+    protected abstract W getWriter();
+
+    protected abstract R getReader(Reader reader);
+
+    protected Bitmap obtainBitmap(int width, int height) {
+        Bitmap ret = null;
+        Iterator<Bitmap> iterator = cacheBitmaps.iterator();
+        while (iterator.hasNext()) {
+            int reuseSize = width * height * 4;
+            ret = iterator.next();
+
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+                if (ret != null && ret.getAllocationByteCount() >= reuseSize) {
+                    iterator.remove();
+                    if (ret.getWidth() != width || ret.getHeight() != height) {
+                        ret.reconfigure(width, height, Bitmap.Config.ARGB_8888);
+                    }
+                    ret.eraseColor(0);
+                    return ret;
+                }
+            } else {
+                if (ret != null && ret.getByteCount() >= reuseSize) {
+                    if (ret.getWidth() == width && ret.getHeight() == height) {
+                        iterator.remove();
+                        ret.eraseColor(0);
+                    }
+                    return ret;
+                }
+            }
+        }
+
+        try {
+            Bitmap.Config config = Bitmap.Config.ARGB_8888;
+            ret = Bitmap.createBitmap(width, height, config);
+        } catch (OutOfMemoryError e) {
+            e.printStackTrace();
+        }
+        return ret;
+    }
+
+    protected void recycleBitmap(Bitmap bitmap) {
+        if (bitmap != null && !cacheBitmaps.contains(bitmap)) {
+            cacheBitmaps.add(bitmap);
+        }
+    }
+
+    /**
+     * 解码器的渲染回调
+     */
+    public interface RenderListener {
+        /**
+         * 播放开始
+         */
+        void onStart();
+
+        /**
+         * 帧播放
+         */
+        void onRender(ByteBuffer byteBuffer);
+
+        /**
+         * 播放结束
+         */
+        void onEnd();
+    }
+
+
+    /**
+     * @param loader         webp的reader
+     * @param renderListener 渲染的回调
+     */
+    public FrameSeqDecoder(Loader loader, @Nullable RenderListener renderListener) {
+        this.mLoader = loader;
+        if (renderListener != null) {
+            this.renderListeners.add(renderListener);
+        }
+        this.taskId = FrameDecoderExecutor.getInstance().generateTaskId();
+        this.workerHandler = new Handler(FrameDecoderExecutor.getInstance().getLooper(taskId));
+    }
+
+
+    public void addRenderListener(final RenderListener renderListener) {
+        this.workerHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                renderListeners.add(renderListener);
+            }
+        });
+    }
+
+    public void removeRenderListener(final RenderListener renderListener) {
+        this.workerHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                renderListeners.remove(renderListener);
+            }
+        });
+    }
+
+    public void stopIfNeeded() {
+        this.workerHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                if (renderListeners.size() == 0) {
+                    stop();
+                }
+            }
+        });
+    }
+
+    public Rect getBounds() {
+        if (fullRect == null) {
+            if (mState == State.FINISHING) {
+                Log.e(TAG, "In finishing,do not interrupt");
+            }
+            final Thread thread = Thread.currentThread();
+            workerHandler.post(new Runnable() {
+                @Override
+                public void run() {
+                    try {
+                        if (fullRect == null) {
+                            if (mReader == null) {
+                                mReader = getReader(mLoader.obtain());
+                            } else {
+                                mReader.reset();
+                            }
+                            initCanvasBounds(read(mReader));
+                        }
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                        fullRect = RECT_EMPTY;
+                    } finally {
+                        LockSupport.unpark(thread);
+                    }
+                }
+            });
+            LockSupport.park(thread);
+        }
+        return fullRect;
+    }
+
+    private void initCanvasBounds(Rect rect) {
+        fullRect = rect;
+        frameBuffer = ByteBuffer.allocate((rect.width() * rect.height() / (sampleSize * sampleSize) + 1) * 4);
+        if (mWriter == null) {
+            mWriter = getWriter();
+        }
+    }
+
+
+    private int getFrameCount() {
+        return this.frames.size();
+    }
+
+    /**
+     * @return Loop Count defined in file
+     */
+    protected abstract int getLoopCount();
+
+    public void start() {
+        if (fullRect == RECT_EMPTY) {
+            return;
+        }
+        if (mState == State.RUNNING || mState == State.INITIALIZING) {
+            Log.i(TAG, debugInfo() + " Already started");
+            return;
+        }
+        if (mState == State.FINISHING) {
+            Log.e(TAG, debugInfo() + " Processing,wait for finish at " + mState);
+        }
+        mState = State.INITIALIZING;
+        if (Looper.myLooper() == workerHandler.getLooper()) {
+            innerStart();
+        } else {
+            workerHandler.post(new Runnable() {
+                @Override
+                public void run() {
+                    innerStart();
+                }
+            });
+        }
+    }
+
+    @WorkerThread
+    private void innerStart() {
+        paused.compareAndSet(true, false);
+
+        final long start = System.currentTimeMillis();
+        try {
+            if (frames.size() == 0) {
+                try {
+                    if (mReader == null) {
+                        mReader = getReader(mLoader.obtain());
+                    } else {
+                        mReader.reset();
+                    }
+                    initCanvasBounds(read(mReader));
+                } catch (Throwable e) {
+                    e.printStackTrace();
+                }
+            }
+        } finally {
+            Log.i(TAG, debugInfo() + " Set state to RUNNING,cost " + (System.currentTimeMillis() - start));
+            mState = State.RUNNING;
+        }
+        if (getNumPlays() == 0 || !finished) {
+            this.frameIndex = -1;
+            renderTask.run();
+            for (RenderListener renderListener : renderListeners) {
+                renderListener.onStart();
+            }
+        } else {
+            Log.i(TAG, debugInfo() + " No need to started");
+        }
+    }
+
+    @WorkerThread
+    private void innerStop() {
+        workerHandler.removeCallbacks(renderTask);
+        frames.clear();
+        for (Bitmap bitmap : cacheBitmaps) {
+            if (bitmap != null && !bitmap.isRecycled()) {
+                bitmap.recycle();
+            }
+        }
+        cacheBitmaps.clear();
+        if (frameBuffer != null) {
+            frameBuffer = null;
+        }
+        cachedCanvas.clear();
+        try {
+            if (mReader != null) {
+                mReader.close();
+                mReader = null;
+            }
+            if (mWriter != null) {
+                mWriter.close();
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        release();
+        mState = State.IDLE;
+        for (RenderListener renderListener : renderListeners) {
+            renderListener.onEnd();
+        }
+    }
+
+    public void stop() {
+        if (fullRect == RECT_EMPTY) {
+            return;
+        }
+        if (mState == State.FINISHING || mState == State.IDLE) {
+            Log.i(TAG, debugInfo() + "No need to stop");
+            return;
+        }
+        if (mState == State.INITIALIZING) {
+            Log.e(TAG, debugInfo() + "Processing,wait for finish at " + mState);
+        }
+        mState = State.FINISHING;
+        if (Looper.myLooper() == workerHandler.getLooper()) {
+            innerStop();
+        } else {
+            workerHandler.post(new Runnable() {
+                @Override
+                public void run() {
+                    innerStop();
+                }
+            });
+        }
+    }
+
+    private String debugInfo() {
+        return "";
+    }
+
+    protected abstract void release();
+
+    public boolean isRunning() {
+        return mState == State.RUNNING || mState == State.INITIALIZING;
+    }
+
+    public boolean isPaused() {
+        return paused.get();
+    }
+
+    public void setLoopLimit(int limit) {
+        this.loopLimit = limit;
+    }
+
+    public void reset() {
+        this.playCount = 0;
+        this.frameIndex = -1;
+        this.finished = false;
+    }
+
+    public void pause() {
+        workerHandler.removeCallbacks(renderTask);
+        paused.compareAndSet(false, true);
+    }
+
+    public void resume() {
+        paused.compareAndSet(true, false);
+        workerHandler.removeCallbacks(renderTask);
+        workerHandler.post(renderTask);
+    }
+
+
+    public int getSampleSize() {
+        return sampleSize;
+    }
+
+    public boolean setDesiredSize(int width, int height) {
+        boolean sampleSizeChanged = false;
+        int sample = getDesiredSample(width, height);
+        if (sample != this.sampleSize) {
+            this.sampleSize = sample;
+            sampleSizeChanged = true;
+            final boolean tempRunning = isRunning();
+            workerHandler.removeCallbacks(renderTask);
+            workerHandler.post(new Runnable() {
+                @Override
+                public void run() {
+                    innerStop();
+                    try {
+                        initCanvasBounds(read(getReader(mLoader.obtain())));
+                        if (tempRunning) {
+                            innerStart();
+                        }
+                    } catch (IOException e) {
+                        e.printStackTrace();
+                    }
+                }
+            });
+        }
+        return sampleSizeChanged;
+    }
+
+    protected int getDesiredSample(int desiredWidth, int desiredHeight) {
+        if (desiredWidth == 0 || desiredHeight == 0) {
+            return 1;
+        }
+        int radio = Math.min(getBounds().width() / desiredWidth, getBounds().height() / desiredHeight);
+        int sample = 1;
+        while ((sample * 2) <= radio) {
+            sample *= 2;
+        }
+        return sample;
+    }
+
+    protected abstract Rect read(R reader) throws IOException;
+
+    private int getNumPlays() {
+        return this.loopLimit != null ? this.loopLimit : this.getLoopCount();
+    }
+
+    private boolean canStep() {
+        if (!isRunning()) {
+            return false;
+        }
+        if (frames.size() == 0) {
+            return false;
+        }
+        if (getNumPlays() <= 0) {
+            return true;
+        }
+        if (this.playCount < getNumPlays() - 1) {
+            return true;
+        } else if (this.playCount == getNumPlays() - 1 && this.frameIndex < this.getFrameCount() - 1) {
+            return true;
+        }
+        finished = true;
+        return false;
+    }
+
+    @WorkerThread
+    private long step() {
+        this.frameIndex++;
+        if (this.frameIndex >= this.getFrameCount()) {
+            this.frameIndex = 0;
+            this.playCount++;
+        }
+        Frame frame = getFrame(this.frameIndex);
+        if (frame == null) {
+            return 0;
+        }
+        renderFrame(frame);
+        return frame.frameDuration;
+    }
+
+    protected abstract void renderFrame(Frame frame);
+
+    private Frame getFrame(int index) {
+        if (index < 0 || index >= frames.size()) {
+            return null;
+        }
+        return frames.get(index);
+    }
+
+    /**
+     * Get Indexed frame
+     *
+     * @param index <0 means reverse from last index
+     */
+    public Bitmap getFrameBitmap(int index) throws IOException {
+        if (mState != State.IDLE) {
+            Log.e(TAG, debugInfo() + ",stop first");
+            return null;
+        }
+        mState = State.RUNNING;
+        paused.compareAndSet(true, false);
+        if (frames.size() == 0) {
+            if (mReader == null) {
+                mReader = getReader(mLoader.obtain());
+            } else {
+                mReader.reset();
+            }
+            initCanvasBounds(read(mReader));
+        }
+        if (index < 0) {
+            index += this.frames.size();
+        }
+        if (index < 0) {
+            index = 0;
+        }
+        frameIndex = -1;
+        while (frameIndex < index) {
+            if (canStep()) {
+                step();
+            } else {
+                break;
+            }
+        }
+        frameBuffer.rewind();
+        Bitmap bitmap = Bitmap.createBitmap(getBounds().width() / getSampleSize(), getBounds().height() / getSampleSize(), Bitmap.Config.ARGB_8888);
+        bitmap.copyPixelsFromBuffer(frameBuffer);
+        innerStop();
+        return bitmap;
+    }
+}

app/src/main/java/org/signal/glide/common/executor/FrameDecoderExecutor.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.executor;
+
+import android.os.HandlerThread;
+import android.os.Looper;
+
+import java.util.ArrayList;
+import java.util.concurrent.atomic.AtomicInteger;
+
+/**
+ * @Description: com.github.penfeizhou.animation.executor
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-11-21
+ */
+public class FrameDecoderExecutor {
+    private static int sPoolNumber = 4;
+    private ArrayList<HandlerThread> mHandlerThreadGroup = new ArrayList<>();
+    private AtomicInteger counter = new AtomicInteger(0);
+
+    private FrameDecoderExecutor() {
+    }
+
+    static class Inner {
+        static final FrameDecoderExecutor sInstance = new FrameDecoderExecutor();
+    }
+
+    public void setPoolSize(int size) {
+        sPoolNumber = size;
+    }
+
+    public static FrameDecoderExecutor getInstance() {
+        return Inner.sInstance;
+    }
+
+    public Looper getLooper(int taskId) {
+        int idx = taskId % sPoolNumber;
+        if (idx >= mHandlerThreadGroup.size()) {
+            HandlerThread handlerThread = new HandlerThread("FrameDecoderExecutor-" + idx);
+            handlerThread.start();
+
+            mHandlerThreadGroup.add(handlerThread);
+            Looper looper = handlerThread.getLooper();
+            if (looper != null) {
+                return looper;
+            } else {
+                return Looper.getMainLooper();
+            }
+        } else {
+            if (mHandlerThreadGroup.get(idx) != null) {
+                Looper looper = mHandlerThreadGroup.get(idx).getLooper();
+                if (looper != null) {
+                    return looper;
+                } else {
+                    return Looper.getMainLooper();
+                }
+            } else {
+                return Looper.getMainLooper();
+            }
+        }
+    }
+
+    public int generateTaskId() {
+        return counter.getAndIncrement();
+    }
+}
+

app/src/main/java/org/signal/glide/common/io/ByteBufferReader.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.io;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+
+/**
+ * @Description: APNG4Android
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-14
+ */
+public class ByteBufferReader implements Reader {
+
+    private final ByteBuffer byteBuffer;
+
+    public ByteBufferReader(ByteBuffer byteBuffer) {
+        this.byteBuffer = byteBuffer;
+        byteBuffer.position(0);
+    }
+
+    @Override
+    public long skip(long total) throws IOException {
+        byteBuffer.position((int) (byteBuffer.position() + total));
+        return total;
+    }
+
+    @Override
+    public byte peek() throws IOException {
+        return byteBuffer.get();
+    }
+
+    @Override
+    public void reset() throws IOException {
+        byteBuffer.position(0);
+    }
+
+    @Override
+    public int position() {
+        return byteBuffer.position();
+    }
+
+    @Override
+    public int read(byte[] buffer, int start, int byteCount) throws IOException {
+        byteBuffer.get(buffer, start, byteCount);
+        return byteCount;
+    }
+
+    @Override
+    public int available() throws IOException {
+        return byteBuffer.limit() - byteBuffer.position();
+    }
+
+    @Override
+    public void close() throws IOException {
+    }
+
+    @Override
+    public InputStream toInputStream() throws IOException {
+        return new ByteArrayInputStream(byteBuffer.array());
+    }
+}

app/src/main/java/org/signal/glide/common/io/ByteBufferWriter.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.io;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+/**
+ * @Description: ByteBufferWriter
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-12
+ */
+public class ByteBufferWriter implements Writer {
+
+    protected ByteBuffer byteBuffer;
+
+    public ByteBufferWriter() {
+        reset(10 * 1024);
+    }
+
+    @Override
+    public void putByte(byte b) {
+        byteBuffer.put(b);
+    }
+
+    @Override
+    public void putBytes(byte[] b) {
+        byteBuffer.put(b);
+    }
+
+    @Override
+    public int position() {
+        return byteBuffer.position();
+    }
+
+    @Override
+    public void skip(int length) {
+        byteBuffer.position(length + position());
+    }
+
+    @Override
+    public byte[] toByteArray() {
+        return byteBuffer.array();
+    }
+
+    @Override
+    public void close() {
+    }
+
+    @Override
+    public void reset(int size) {
+        if (byteBuffer == null || size > byteBuffer.capacity()) {
+            byteBuffer = ByteBuffer.allocate(size);
+            this.byteBuffer.order(ByteOrder.LITTLE_ENDIAN);
+        }
+        byteBuffer.clear();
+    }
+}

app/src/main/java/org/signal/glide/common/io/FileReader.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.io;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+
+/**
+ * @Description: FileReader
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-23
+ */
+public class FileReader extends FilterReader {
+    private final File mFile;
+
+    public FileReader(File file) throws IOException {
+        super(new StreamReader(new FileInputStream(file)));
+        mFile = file;
+    }
+
+    @Override
+    public void reset() throws IOException {
+        reader.close();
+        reader = new StreamReader(new FileInputStream(mFile));
+    }
+}

app/src/main/java/org/signal/glide/common/io/FilterReader.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.io;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * @Description: FilterReader
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-23
+ */
+public class FilterReader implements Reader {
+    protected Reader reader;
+
+    public FilterReader(Reader in) {
+        this.reader = in;
+    }
+
+    @Override
+    public long skip(long total) throws IOException {
+        return reader.skip(total);
+    }
+
+    @Override
+    public byte peek() throws IOException {
+        return reader.peek();
+    }
+
+    @Override
+    public void reset() throws IOException {
+        reader.reset();
+    }
+
+    @Override
+    public int position() {
+        return reader.position();
+    }
+
+    @Override
+    public int read(byte[] buffer, int start, int byteCount) throws IOException {
+        return reader.read(buffer, start, byteCount);
+    }
+
+    @Override
+    public int available() throws IOException {
+        return reader.available();
+    }
+
+    @Override
+    public void close() throws IOException {
+        reader.close();
+    }
+
+    @Override
+    public InputStream toInputStream() throws IOException {
+        reset();
+        return reader.toInputStream();
+    }
+}

app/src/main/java/org/signal/glide/common/io/Reader.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.io;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * @link {https://developers.google.com/speed/webp/docs/riff_container#terminology_basics}
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-11
+ */
+public interface Reader {
+    long skip(long total) throws IOException;
+
+    byte peek() throws IOException;
+
+    void reset() throws IOException;
+
+    int position();
+
+    int read(byte[] buffer, int start, int byteCount) throws IOException;
+
+    int available() throws IOException;
+
+    /**
+     * close io
+     */
+    void close() throws IOException;
+
+    InputStream toInputStream() throws IOException;
+}

app/src/main/java/org/signal/glide/common/io/StreamReader.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.io;
+
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-11
+ */
+public class StreamReader extends FilterInputStream implements Reader {
+    private int position;
+
+    public StreamReader(InputStream in) {
+        super(in);
+        try {
+            in.reset();
+        } catch (IOException e) {
+            // e.printStackTrace();
+        }
+    }
+
+    @Override
+    public byte peek() throws IOException {
+        byte ret = (byte) read();
+        position++;
+        return ret;
+    }
+
+    @Override
+    public int read(byte[] b, int off, int len) throws IOException {
+        int ret = super.read(b, off, len);
+        position += Math.max(0, ret);
+        return ret;
+    }
+
+    @Override
+    public synchronized void reset() throws IOException {
+        super.reset();
+        position = 0;
+    }
+
+    @Override
+    public long skip(long n) throws IOException {
+        long ret = super.skip(n);
+        position += ret;
+        return ret;
+    }
+
+    @Override
+    public int position() {
+        return position;
+    }
+
+    @Override
+    public InputStream toInputStream() throws IOException {
+        return this;
+    }
+}

app/src/main/java/org/signal/glide/common/io/Writer.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.io;
+
+import java.io.IOException;
+
+/**
+ * @Description: APNG4Android
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-12
+ */
+public interface Writer {
+    void reset(int size);
+
+    void putByte(byte b);
+
+    void putBytes(byte[] b);
+
+    int position();
+
+    void skip(int length);
+
+    byte[] toByteArray();
+
+    void close() throws IOException;
+}

app/src/main/java/org/signal/glide/common/loader/AssetStreamLoader.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.loader;
+
+import android.content.Context;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * @Description: 从Asset中读取流
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/28
+ */
+public class AssetStreamLoader extends StreamLoader {
+
+    private final Context mContext;
+    private final String mAssetName;
+
+    public AssetStreamLoader(Context context, String assetName) {
+        mContext = context.getApplicationContext();
+        mAssetName = assetName;
+    }
+
+    @Override
+    protected InputStream getInputStream() throws IOException {
+        return mContext.getAssets().open(mAssetName);
+    }
+}

app/src/main/java/org/signal/glide/common/loader/ByteBufferLoader.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.loader;
+
+import org.signal.glide.common.io.ByteBufferReader;
+import org.signal.glide.common.io.Reader;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+/**
+ * @Description: ByteBufferLoader
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-15
+ */
+public abstract class ByteBufferLoader implements Loader {
+    public abstract ByteBuffer getByteBuffer();
+
+    @Override
+    public Reader obtain() throws IOException {
+        return new ByteBufferReader(getByteBuffer());
+    }
+}

app/src/main/java/org/signal/glide/common/loader/FileLoader.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.loader;
+
+import org.signal.glide.common.io.FileReader;
+import org.signal.glide.common.io.Reader;
+
+import java.io.File;
+import java.io.IOException;
+
+/**
+ * @Description: 从文件加载流
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/28
+ */
+public class FileLoader implements Loader {
+
+    private final File mFile;
+    private Reader mReader;
+
+    public FileLoader(String path) {
+        mFile = new File(path);
+    }
+
+    @Override
+    public synchronized Reader obtain() throws IOException {
+        return new FileReader(mFile);
+    }
+}

app/src/main/java/org/signal/glide/common/loader/Loader.java

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.loader;
+
+import org.signal.glide.common.io.Reader;
+
+import java.io.IOException;
+
+/**
+ * @Description: Loader
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019-05-14
+ */
+public interface Loader {
+    Reader obtain() throws IOException;
+}

app/src/main/java/org/signal/glide/common/loader/ResourceStreamLoader.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.loader;
+
+import android.content.Context;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * @Description: 从资源加载流
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/28
+ */
+public class ResourceStreamLoader extends StreamLoader {
+    private final Context mContext;
+    private final int mResId;
+
+
+    public ResourceStreamLoader(Context context, int resId) {
+        mContext = context.getApplicationContext();
+        mResId = resId;
+    }
+
+    @Override
+    protected InputStream getInputStream() throws IOException {
+        return mContext.getResources().openRawResource(mResId);
+    }
+}

app/src/main/java/org/signal/glide/common/loader/StreamLoader.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2019 Zhou Pengfei
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.signal.glide.common.loader;
+
+import org.signal.glide.common.io.Reader;
+import org.signal.glide.common.io.StreamReader;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * @Author: pengfei.zhou
+ * @CreateDate: 2019/3/28
+ */
+public abstract class StreamLoader implements Loader {
+    protected abstract InputStream getInputStream() throws IOException;
+
+
+    public final synchronized Reader obtain() throws IOException {
+        return new StreamReader(getInputStream());
+    }
+}

app/src/main/java/org/thoughtcrime/securesms/AppCapabilities.java

@@ -1,20 +1,22 @@
 package org.thoughtcrime.securesms;
 
-import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
+import org.thoughtcrime.securesms.util.FeatureFlags;
+import org.whispersystems.signalservice.api.account.AccountAttributes;
 
 public final class AppCapabilities {
 
   private AppCapabilities() {
   }
 
-  private static final boolean UUID_CAPABLE      = false;
+  private static final boolean UUID_CAPABLE  = false;
-  private static final boolean GROUPS_V2_CAPABLE = false;
+  private static final boolean GV2_CAPABLE   = true;
+  private static final boolean GV1_MIGRATION = true;
 
   /**
    * @param storageCapable Whether or not the user can use storage service. This is another way of
    *                       asking if the user has set a Signal PIN or not.
    */
-  public static SignalServiceProfile.Capabilities getCapabilities(boolean storageCapable) {
+  public static AccountAttributes.Capabilities getCapabilities(boolean storageCapable) {
-    return new SignalServiceProfile.Capabilities(UUID_CAPABLE, GROUPS_V2_CAPABLE, storageCapable);
+    return new AccountAttributes.Capabilities(UUID_CAPABLE, GV2_CAPABLE, storageCapable, GV1_MIGRATION, FeatureFlags.senderKey());
   }
 }

app/src/main/java/org/thoughtcrime/securesms/AppInitialization.java

@@ -4,12 +4,13 @@ import android.content.Context;
 
 import androidx.annotation.NonNull;
 
+import org.signal.core.util.logging.Log;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.insights.InsightsOptOut;
 import org.thoughtcrime.securesms.jobmanager.JobManager;
+import org.thoughtcrime.securesms.jobs.EmojiSearchIndexDownloadJob;
 import org.thoughtcrime.securesms.jobs.StickerPackDownloadJob;
 import org.thoughtcrime.securesms.keyvalue.SignalStore;
-import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.migrations.ApplicationMigrations;
 import org.thoughtcrime.securesms.stickers.BlessedPacks;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
@@ -34,10 +35,16 @@ public final class AppInitialization {
     TextSecurePreferences.setJobManagerVersion(context, JobManager.CURRENT_VERSION);
     TextSecurePreferences.setLastExperienceVersionCode(context, Util.getCanonicalVersionCode());
     TextSecurePreferences.setHasSeenStickerIntroTooltip(context, true);
+    TextSecurePreferences.setPasswordDisabled(context, true);
+    TextSecurePreferences.setLastExperienceVersionCode(context, Util.getCanonicalVersionCode());
+    TextSecurePreferences.setReadReceiptsEnabled(context, true);
+    TextSecurePreferences.setTypingIndicatorsEnabled(context, true);
+    TextSecurePreferences.setHasSeenWelcomeScreen(context, false);
     ApplicationDependencies.getMegaphoneRepository().onFirstEverAppLaunch();
     SignalStore.onFirstEverAppLaunch();
     ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forInstall(BlessedPacks.ZOZO.getPackId(), BlessedPacks.ZOZO.getPackKey(), false));
     ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forInstall(BlessedPacks.BANDIT.getPackId(), BlessedPacks.BANDIT.getPackKey(), false));
+    ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forInstall(BlessedPacks.DAY_BY_DAY.getPackId(), BlessedPacks.DAY_BY_DAY.getPackKey(), false));
     ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forReference(BlessedPacks.SWOON_HANDS.getPackId(), BlessedPacks.SWOON_HANDS.getPackKey()));
     ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forReference(BlessedPacks.SWOON_FACES.getPackId(), BlessedPacks.SWOON_FACES.getPackKey()));
   }
@@ -47,8 +54,34 @@ public final class AppInitialization {
 
     ApplicationDependencies.getMegaphoneRepository().onFirstEverAppLaunch();
     SignalStore.onFirstEverAppLaunch();
+    SignalStore.onboarding().clearAll();
+    TextSecurePreferences.onPostBackupRestore(context);
     ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forInstall(BlessedPacks.ZOZO.getPackId(), BlessedPacks.ZOZO.getPackKey(), false));
     ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forInstall(BlessedPacks.BANDIT.getPackId(), BlessedPacks.BANDIT.getPackKey(), false));
+    ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forInstall(BlessedPacks.DAY_BY_DAY.getPackId(), BlessedPacks.DAY_BY_DAY.getPackKey(), false));
+    ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forReference(BlessedPacks.SWOON_HANDS.getPackId(), BlessedPacks.SWOON_HANDS.getPackKey()));
+    ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forReference(BlessedPacks.SWOON_FACES.getPackId(), BlessedPacks.SWOON_FACES.getPackKey()));
+    EmojiSearchIndexDownloadJob.scheduleImmediately();
+  }
+
+  /**
+   * Temporary migration method that does the safest bits of {@link #onFirstEverAppLaunch(Context)}
+   */
+  public static void onRepairFirstEverAppLaunch(@NonNull Context context) {
+    Log.w(TAG, "onRepairFirstEverAppLaunch()");
+
+    InsightsOptOut.userRequestedOptOut(context);
+    TextSecurePreferences.setAppMigrationVersion(context, ApplicationMigrations.CURRENT_VERSION);
+    TextSecurePreferences.setJobManagerVersion(context, JobManager.CURRENT_VERSION);
+    TextSecurePreferences.setLastExperienceVersionCode(context, Util.getCanonicalVersionCode());
+    TextSecurePreferences.setHasSeenStickerIntroTooltip(context, true);
+    TextSecurePreferences.setPasswordDisabled(context, true);
+    TextSecurePreferences.setLastExperienceVersionCode(context, Util.getCanonicalVersionCode());
+    ApplicationDependencies.getMegaphoneRepository().onFirstEverAppLaunch();
+    SignalStore.onFirstEverAppLaunch();
+    ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forInstall(BlessedPacks.ZOZO.getPackId(), BlessedPacks.ZOZO.getPackKey(), false));
+    ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forInstall(BlessedPacks.BANDIT.getPackId(), BlessedPacks.BANDIT.getPackKey(), false));
+    ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forInstall(BlessedPacks.DAY_BY_DAY.getPackId(), BlessedPacks.DAY_BY_DAY.getPackKey(), false));
     ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forReference(BlessedPacks.SWOON_HANDS.getPackId(), BlessedPacks.SWOON_HANDS.getPackKey()));
     ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forReference(BlessedPacks.SWOON_FACES.getPackId(), BlessedPacks.SWOON_FACES.getPackKey()));
   }

app/src/main/java/org/thoughtcrime/securesms/ApplicationContext.java

@@ -16,70 +16,74 @@
  */
 package org.thoughtcrime.securesms;
 
-import android.annotation.SuppressLint;
 import android.content.Context;
-import android.os.AsyncTask;
 import android.os.Build;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.WorkerThread;
 import androidx.appcompat.app.AppCompatDelegate;
-import androidx.lifecycle.DefaultLifecycleObserver;
-import androidx.lifecycle.LifecycleOwner;
-import androidx.lifecycle.ProcessLifecycleOwner;
 import androidx.multidex.MultiDexApplication;
 
 import com.google.android.gms.security.ProviderInstaller;
 
 import org.conscrypt.Conscrypt;
 import org.signal.aesgcmprovider.AesGcmProvider;
+import org.signal.core.util.concurrent.SignalExecutors;
+import org.signal.core.util.logging.AndroidLogger;
+import org.signal.core.util.logging.Log;
+import org.signal.core.util.logging.PersistentLogger;
+import org.signal.core.util.tracing.Tracer;
+import org.signal.glide.SignalGlideCodecs;
 import org.signal.ringrtc.CallManager;
-import org.thoughtcrime.securesms.components.TypingStatusRepository;
-import org.thoughtcrime.securesms.components.TypingStatusSender;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
 import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencyProvider;
+import org.thoughtcrime.securesms.emoji.EmojiSource;
 import org.thoughtcrime.securesms.gcm.FcmJobService;
 import org.thoughtcrime.securesms.jobs.CreateSignedPreKeyJob;
+import org.thoughtcrime.securesms.jobs.DownloadLatestEmojiDataJob;
+import org.thoughtcrime.securesms.jobs.EmojiSearchIndexDownloadJob;
 import org.thoughtcrime.securesms.jobs.FcmRefreshJob;
+import org.thoughtcrime.securesms.jobs.GroupV1MigrationJob;
 import org.thoughtcrime.securesms.jobs.MultiDeviceContactUpdateJob;
 import org.thoughtcrime.securesms.jobs.PushNotificationReceiveJob;
-import org.thoughtcrime.securesms.jobs.RefreshAttributesJob;
 import org.thoughtcrime.securesms.jobs.RefreshPreKeysJob;
-import org.thoughtcrime.securesms.logging.AndroidLogger;
+import org.thoughtcrime.securesms.jobs.RetrieveProfileJob;
+import org.thoughtcrime.securesms.keyvalue.SignalStore;
 import org.thoughtcrime.securesms.logging.CustomSignalProtocolLogger;
-import org.thoughtcrime.securesms.logging.Log;
+import org.thoughtcrime.securesms.logging.LogSecretProvider;
-import org.thoughtcrime.securesms.logging.PersistentLogger;
+import org.thoughtcrime.securesms.messageprocessingalarm.MessageProcessReceiver;
-import org.thoughtcrime.securesms.logging.SignalUncaughtExceptionHandler;
 import org.thoughtcrime.securesms.migrations.ApplicationMigrations;
-import org.thoughtcrime.securesms.notifications.MessageNotifier;
 import org.thoughtcrime.securesms.notifications.NotificationChannels;
 import org.thoughtcrime.securesms.providers.BlobProvider;
 import org.thoughtcrime.securesms.push.SignalServiceNetworkAccess;
+import org.thoughtcrime.securesms.ratelimit.RateLimitUtil;
 import org.thoughtcrime.securesms.registration.RegistrationUtil;
-import org.thoughtcrime.securesms.revealable.ViewOnceMessageManager;
 import org.thoughtcrime.securesms.ringrtc.RingRtcLogger;
 import org.thoughtcrime.securesms.service.DirectoryRefreshListener;
-import org.thoughtcrime.securesms.service.ExpiringMessageManager;
-import org.thoughtcrime.securesms.service.IncomingMessageObserver;
 import org.thoughtcrime.securesms.service.KeyCachingService;
 import org.thoughtcrime.securesms.service.LocalBackupListener;
 import org.thoughtcrime.securesms.service.RotateSenderCertificateListener;
 import org.thoughtcrime.securesms.service.RotateSignedPreKeyListener;
 import org.thoughtcrime.securesms.service.UpdateApkRefreshListener;
 import org.thoughtcrime.securesms.storage.StorageSyncHelper;
+import org.thoughtcrime.securesms.util.AppForegroundObserver;
+import org.thoughtcrime.securesms.util.AppStartup;
+import org.thoughtcrime.securesms.util.ByteUnit;
+import org.thoughtcrime.securesms.util.DynamicTheme;
 import org.thoughtcrime.securesms.util.FeatureFlags;
-import org.thoughtcrime.securesms.util.PlayServicesUtil;
+import org.thoughtcrime.securesms.util.SignalUncaughtExceptionHandler;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
-import org.thoughtcrime.securesms.util.concurrent.SignalExecutors;
+import org.thoughtcrime.securesms.util.Util;
+import org.thoughtcrime.securesms.util.VersionTracker;
 import org.thoughtcrime.securesms.util.dynamiclanguage.DynamicLanguageContextWrapper;
 import org.webrtc.voiceengine.WebRtcAudioManager;
 import org.webrtc.voiceengine.WebRtcAudioUtils;
 import org.whispersystems.libsignal.logging.SignalProtocolLoggerProvider;
 
 import java.security.Security;
-import java.util.HashSet;
-import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
 /**
@@ -90,18 +94,11 @@ import java.util.concurrent.TimeUnit;
  *
  * @author Moxie Marlinspike
  */
-public class ApplicationContext extends MultiDexApplication implements DefaultLifecycleObserver {
+public class ApplicationContext extends MultiDexApplication implements AppForegroundObserver.Listener {
 
-  private static final String TAG = ApplicationContext.class.getSimpleName();
+  private static final String TAG = Log.tag(ApplicationContext.class);
 
-  private ExpiringMessageManager   expiringMessageManager;
+  private PersistentLogger persistentLogger;
-  private ViewOnceMessageManager   viewOnceMessageManager;
-  private TypingStatusRepository   typingStatusRepository;
-  private TypingStatusSender       typingStatusSender;
-  private IncomingMessageObserver  incomingMessageObserver;
-  private PersistentLogger         persistentLogger;
-
-  private volatile boolean isAppVisible;
 
   public static ApplicationContext getInstance(Context context) {
     return (ApplicationContext)context.getApplicationContext();
@@ -109,88 +106,113 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
 
   @Override
   public void onCreate() {
-    super.onCreate();
+    Tracer.getInstance().start("Application#onCreate()");
-    Log.i(TAG, "onCreate()");
+    AppStartup.getInstance().onApplicationCreate();
-    initializeSecurityProvider();
-    initializeLogging();
-    initializeCrashHandling();
-    initializeAppDependencies();
-    initializeFirstEverAppLaunch();
-    initializeApplicationMigrations();
-    initializeMessageRetrieval();
-    initializeExpiringMessageManager();
-    initializeRevealableMessageManager();
-    initializeTypingStatusRepository();
-    initializeTypingStatusSender();
-    initializeGcmCheck();
-    initializeSignedPreKeyCheck();
-    initializePeriodicTasks();
-    initializeCircumvention();
-    initializeRingRtc();
-    initializePendingMessages();
-    initializeBlobProvider();
-    initializeCleanup();
-    initializePlayServicesCheck();
 
-    FeatureFlags.init();
+    long startTime = System.currentTimeMillis();
-    NotificationChannels.create(this);
-    RefreshPreKeysJob.scheduleIfNecessary();
-    StorageSyncHelper.scheduleRoutineSync();
-    RegistrationUtil.markRegistrationPossiblyComplete();
-    ProcessLifecycleOwner.get().getLifecycle().addObserver(this);
 
-    if (Build.VERSION.SDK_INT < 21) {
+    if (FeatureFlags.internalUser()) {
-      AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
+      Tracer.getInstance().setMaxBufferSize(35_000);
     }
 
-    ApplicationDependencies.getJobManager().beginJobLoop();
+    super.onCreate();
+
+    AppStartup.getInstance().addBlocking("security-provider", this::initializeSecurityProvider)
+                            .addBlocking("logging", () -> {
+                                initializeLogging();
+                                Log.i(TAG, "onCreate()");
+                            })
+                            .addBlocking("crash-handling", this::initializeCrashHandling)
+                            .addBlocking("eat-db", () -> DatabaseFactory.getInstance(this))
+                            .addBlocking("app-dependencies", this::initializeAppDependencies)
+                            .addBlocking("notification-channels", () -> NotificationChannels.create(this))
+                            .addBlocking("first-launch", this::initializeFirstEverAppLaunch)
+                            .addBlocking("app-migrations", this::initializeApplicationMigrations)
+                            .addBlocking("ring-rtc", this::initializeRingRtc)
+                            .addBlocking("mark-registration", () -> RegistrationUtil.maybeMarkRegistrationComplete(this))
+                            .addBlocking("lifecycle-observer", () -> ApplicationDependencies.getAppForegroundObserver().addListener(this))
+                            .addBlocking("message-retriever", this::initializeMessageRetrieval)
+                            .addBlocking("dynamic-theme", () -> DynamicTheme.setDefaultDayNightMode(this))
+                            .addBlocking("vector-compat", () -> {
+                              if (Build.VERSION.SDK_INT < 21) {
+                                AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
+                              }
+                            })
+                            .addBlocking("proxy-init", () -> {
+                              if (SignalStore.proxy().isProxyEnabled()) {
+                                Log.w(TAG, "Proxy detected. Enabling Conscrypt.setUseEngineSocketByDefault()");
+                                Conscrypt.setUseEngineSocketByDefault(true);
+                              }
+                            })
+                            .addBlocking("blob-provider", this::initializeBlobProvider)
+                            .addBlocking("feature-flags", FeatureFlags::init)
+                            .addNonBlocking(this::initializeRevealableMessageManager)
+                            .addNonBlocking(this::initializePendingRetryReceiptManager)
+                            .addNonBlocking(this::initializeGcmCheck)
+                            .addNonBlocking(this::initializeSignedPreKeyCheck)
+                            .addNonBlocking(this::initializePeriodicTasks)
+                            .addNonBlocking(this::initializeCircumvention)
+                            .addNonBlocking(this::initializePendingMessages)
+                            .addNonBlocking(this::initializeCleanup)
+                            .addNonBlocking(this::initializeGlideCodecs)
+                            .addNonBlocking(RefreshPreKeysJob::scheduleIfNecessary)
+                            .addNonBlocking(StorageSyncHelper::scheduleRoutineSync)
+                            .addNonBlocking(() -> ApplicationDependencies.getJobManager().beginJobLoop())
+                            .addNonBlocking(EmojiSource::refresh)
+                            .addPostRender(() -> RateLimitUtil.retryAllRateLimitedMessages(this))
+                            .addPostRender(this::initializeExpiringMessageManager)
+                            .addPostRender(() -> SignalStore.settings().setDefaultSms(Util.isDefaultSmsProvider(this)))
+                            .addPostRender(() -> DownloadLatestEmojiDataJob.scheduleIfNecessary(this))
+                            .addPostRender(EmojiSearchIndexDownloadJob::scheduleIfNecessary)
+                            .addPostRender(() -> DatabaseFactory.getMessageLogDatabase(this).trimOldMessages(System.currentTimeMillis(), FeatureFlags.retryRespondMaxAge()))
+                            .execute();
+
+    Log.d(TAG, "onCreate() took " + (System.currentTimeMillis() - startTime) + " ms");
+    Tracer.getInstance().end("Application#onCreate()");
   }
 
   @Override
-  public void onStart(@NonNull LifecycleOwner owner) {
+  public void onForeground() {
-    isAppVisible = true;
+    long startTime = System.currentTimeMillis();
     Log.i(TAG, "App is now visible.");
-    FeatureFlags.refreshIfNecessary();
+
-    ApplicationDependencies.getRecipientCache().warmUp();
-    executePendingContactSync();
-    KeyCachingService.onAppForegrounded(this);
     ApplicationDependencies.getFrameRateTracker().begin();
     ApplicationDependencies.getMegaphoneRepository().onAppForegrounded();
+
+    SignalExecutors.BOUNDED.execute(() -> {
+      FeatureFlags.refreshIfNecessary();
+      ApplicationDependencies.getRecipientCache().warmUp();
+      RetrieveProfileJob.enqueueRoutineFetchIfNecessary(this);
+      GroupV1MigrationJob.enqueueRoutineMigrationsIfNecessary(this);
+      executePendingContactSync();
+      KeyCachingService.onAppForegrounded(this);
+      ApplicationDependencies.getShakeToReport().enable();
+      checkBuildExpiration();
+    });
+
+    Log.d(TAG, "onStart() took " + (System.currentTimeMillis() - startTime) + " ms");
   }
 
   @Override
-  public void onStop(@NonNull LifecycleOwner owner) {
+  public void onBackground() {
-    isAppVisible = false;
     Log.i(TAG, "App is no longer visible.");
     KeyCachingService.onAppBackgrounded(this);
-    MessageNotifier.setVisibleThread(-1);
+    ApplicationDependencies.getMessageNotifier().clearVisibleThread();
     ApplicationDependencies.getFrameRateTracker().end();
-  }
+    ApplicationDependencies.getShakeToReport().disable();
-
-  public ExpiringMessageManager getExpiringMessageManager() {
-    return expiringMessageManager;
-  }
-
-  public ViewOnceMessageManager getViewOnceMessageManager() {
-    return viewOnceMessageManager;
-  }
-
-  public TypingStatusRepository getTypingStatusRepository() {
-    return typingStatusRepository;
-  }
-
-  public TypingStatusSender getTypingStatusSender() {
-    return typingStatusSender;
-  }
-
-  public boolean isAppVisible() {
-    return isAppVisible;
   }
 
   public PersistentLogger getPersistentLogger() {
     return persistentLogger;
   }
 
+  public void checkBuildExpiration() {
+    if (Util.getTimeUntilBuildExpiry() <= 0 && !SignalStore.misc().isClientDeprecated()) {
+      Log.w(TAG, "Build expired!");
+      SignalStore.misc().markClientDeprecated();
+    }
+  }
+
   private void initializeSecurityProvider() {
     try {
       Class.forName("org.signal.aesgcmprovider.AesGcmCipher");
@@ -216,8 +238,8 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
   }
 
   private void initializeLogging() {
-    persistentLogger = new PersistentLogger(this);
+    persistentLogger = new PersistentLogger(this, LogSecretProvider.getOrCreateAttachmentSecret(this), BuildConfig.VERSION_NAME, FeatureFlags.internalUser() ? 15 : 7, ByteUnit.KILOBYTES.toBytes(300));
-    org.thoughtcrime.securesms.logging.Log.initialize(new AndroidLogger(), persistentLogger);
+    org.signal.core.util.logging.Log.initialize(FeatureFlags::internalUser, new AndroidLogger(), persistentLogger);
 
     SignalProtocolLoggerProvider.setProvider(new CustomSignalProtocolLogger());
   }
@@ -232,22 +254,28 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
   }
 
   public void initializeMessageRetrieval() {
-    this.incomingMessageObserver = new IncomingMessageObserver(this);
+    ApplicationDependencies.getIncomingMessageObserver();
   }
 
   private void initializeAppDependencies() {
-    ApplicationDependencies.init(this, new ApplicationDependencyProvider(this, new SignalServiceNetworkAccess(this)));
+    ApplicationDependencies.init(this, new ApplicationDependencyProvider(this));
   }
 
   private void initializeFirstEverAppLaunch() {
     if (TextSecurePreferences.getFirstInstallVersion(this) == -1) {
-      if (!SQLCipherOpenHelper.databaseFileExists(this)) {
+      if (!SQLCipherOpenHelper.databaseFileExists(this) || VersionTracker.getDaysSinceFirstInstalled(this) < 365) {
         Log.i(TAG, "First ever app launch!");
         AppInitialization.onFirstEverAppLaunch(this);
       }
 
       Log.i(TAG, "Setting first install version to " + BuildConfig.CANONICAL_VERSION_CODE);
       TextSecurePreferences.setFirstInstallVersion(this, BuildConfig.CANONICAL_VERSION_CODE);
+    } else if (!TextSecurePreferences.isPasswordDisabled(this) && VersionTracker.getDaysSinceFirstInstalled(this) < 90) {
+      Log.i(TAG, "Detected a new install that doesn't have passphrases disabled -- assuming bad initialization.");
+      AppInitialization.onRepairFirstEverAppLaunch(this);
+    } else if (!TextSecurePreferences.isPasswordDisabled(this) && VersionTracker.getDaysSinceFirstInstalled(this) < 912) {
+      Log.i(TAG, "Detected a not-recent install that doesn't have passphrases disabled -- disabling now.");
+      TextSecurePreferences.setPasswordDisabled(this, true);
     }
   }
 
@@ -268,19 +296,15 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
   }
 
   private void initializeExpiringMessageManager() {
-    this.expiringMessageManager = new ExpiringMessageManager(this);
+    ApplicationDependencies.getExpiringMessageManager().checkSchedule();
   }
 
   private void initializeRevealableMessageManager() {
-    this.viewOnceMessageManager = new ViewOnceMessageManager(this);
+    ApplicationDependencies.getViewOnceMessageManager().scheduleIfNecessary();
   }
 
-  private void initializeTypingStatusRepository() {
+  private void initializePendingRetryReceiptManager() {
-    this.typingStatusRepository = new TypingStatusRepository();
+    ApplicationDependencies.getPendingRetryReceiptManager().scheduleIfNecessary();
-  }
-
-  private void initializeTypingStatusSender() {
-    this.typingStatusSender = new TypingStatusSender(this);
   }
 
   private void initializePeriodicTasks() {
@@ -288,6 +312,7 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
     DirectoryRefreshListener.schedule(this);
     LocalBackupListener.schedule(this);
     RotateSenderCertificateListener.schedule(this);
+    MessageProcessReceiver.startOrUpdateAlarm(this);
 
     if (BuildConfig.PLAY_STORE_DISABLED) {
       UpdateApkRefreshListener.schedule(this);
@@ -296,31 +321,11 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
 
   private void initializeRingRtc() {
     try {
-      Set<String> HARDWARE_AEC_BLACKLIST = new HashSet<String>() {{
+      if (RtcDeviceLists.hardwareAECBlocked()) {
-        add("Pixel");
-        add("Pixel XL");
-        add("Moto G5");
-        add("Moto G (5S) Plus");
-        add("Moto G4");
-        add("TA-1053");
-        add("Mi A1");
-        add("Mi A2");
-        add("E5823"); // Sony z5 compact
-        add("Redmi Note 5");
-        add("FP2"); // Fairphone FP2
-        add("MI 5");
-      }};
-
-      Set<String> OPEN_SL_ES_WHITELIST = new HashSet<String>() {{
-        add("Pixel");
-        add("Pixel XL");
-      }};
-
-      if (HARDWARE_AEC_BLACKLIST.contains(Build.MODEL)) {
         WebRtcAudioUtils.setWebRtcBasedAcousticEchoCanceler(true);
       }
 
-      if (!OPEN_SL_ES_WHITELIST.contains(Build.MODEL)) {
+      if (!RtcDeviceLists.openSLESAllowed()) {
         WebRtcAudioManager.setBlacklistDeviceForOpenSLESUsage(true);
       }
 
@@ -330,23 +335,15 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
     }
   }
 
-  @SuppressLint("StaticFieldLeak")
+  @WorkerThread
   private void initializeCircumvention() {
-    AsyncTask<Void, Void, Void> task = new AsyncTask<Void, Void, Void>() {
+    if (new SignalServiceNetworkAccess(ApplicationContext.this).isCensored(ApplicationContext.this)) {
-      @Override
+      try {
-      protected Void doInBackground(Void... params) {
+        ProviderInstaller.installIfNeeded(ApplicationContext.this);
-        if (new SignalServiceNetworkAccess(ApplicationContext.this).isCensored(ApplicationContext.this)) {
+      } catch (Throwable t) {
-          try {
+        Log.w(TAG, t);
-            ProviderInstaller.installIfNeeded(ApplicationContext.this);
-          } catch (Throwable t) {
-            Log.w(TAG, t);
-          }
-        }
-        return null;
       }
-    };
+    }
-
-    task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
   }
 
   private void executePendingContactSync() {
@@ -361,43 +358,56 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
       if (Build.VERSION.SDK_INT >= 26) {
         FcmJobService.schedule(this);
       } else {
-        ApplicationDependencies.getJobManager().add(new PushNotificationReceiveJob(this));
+        ApplicationDependencies.getJobManager().add(new PushNotificationReceiveJob());
       }
       TextSecurePreferences.setNeedsMessagePull(this, false);
     }
   }
 
+  @WorkerThread
   private void initializeBlobProvider() {
-    SignalExecutors.BOUNDED.execute(() -> {
+    BlobProvider.getInstance().initialize(this);
-      BlobProvider.getInstance().onSessionStart(this);
-    });
   }
 
+  @WorkerThread
   private void initializeCleanup() {
-    SignalExecutors.BOUNDED.execute(() -> {
+    int deleted = DatabaseFactory.getAttachmentDatabase(this).deleteAbandonedPreuploadedAttachments();
-      int deleted = DatabaseFactory.getAttachmentDatabase(this).deleteAbandonedPreuploadedAttachments();
+    Log.i(TAG, "Deleted " + deleted + " abandoned attachments.");
-      Log.i(TAG, "Deleted " + deleted + " abandoned attachments.");
-    });
   }
 
-  private void initializePlayServicesCheck() {
+  private void initializeGlideCodecs() {
-    if (TextSecurePreferences.isFcmDisabled(this)) {
+    SignalGlideCodecs.setLogProvider(new org.signal.glide.Log.Provider() {
-      PlayServicesUtil.PlayServicesStatus status = PlayServicesUtil.getPlayServicesStatus(this);
+      @Override
-
+      public void v(@NonNull String tag, @NonNull String message) {
-      if (status == PlayServicesUtil.PlayServicesStatus.SUCCESS) {
+        Log.v(tag, message);
-        Log.i(TAG, "Play Services are newly-available. Updating to use FCM.");
-
-        TextSecurePreferences.setFcmDisabled(this, false);
-        ApplicationDependencies.getJobManager().startChain(new FcmRefreshJob())
-                                               .then(new RefreshAttributesJob())
-                                               .enqueue();
       }
-    }
+
+      @Override
+      public void d(@NonNull String tag, @NonNull String message) {
+        Log.d(tag, message);
+      }
+
+      @Override
+      public void i(@NonNull String tag, @NonNull String message) {
+        Log.i(tag, message);
+      }
+
+      @Override
+      public void w(@NonNull String tag, @NonNull String message) {
+        Log.w(tag, message);
+      }
+
+      @Override
+      public void e(@NonNull String tag, @NonNull String message, @Nullable Throwable throwable) {
+        Log.e(tag, message, throwable);
+      }
+    });
   }
 
   @Override
   protected void attachBaseContext(Context base) {
-    super.attachBaseContext(DynamicLanguageContextWrapper.updateContext(base, TextSecurePreferences.getLanguage(base)));
+    DynamicLanguageContextWrapper.updateContext(base);
+    super.attachBaseContext(base);
   }
 
   private static class ProviderInitializationException extends RuntimeException {

app/src/main/java/org/thoughtcrime/securesms/ApplicationPreferencesActivity.java

@@ -1,286 +0,0 @@
-/*
- * Copyright (C) 2011 Whisper Systems
- * Copyright (C) 2013-2017 Open Whisper Systems
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-package org.thoughtcrime.securesms;
-
-import android.content.Intent;
-import android.content.SharedPreferences;
-import android.graphics.PorterDuff;
-import android.os.Build;
-import android.os.Bundle;
-
-import androidx.annotation.Nullable;
-import androidx.fragment.app.Fragment;
-import androidx.fragment.app.FragmentManager;
-import androidx.fragment.app.FragmentTransaction;
-import androidx.preference.Preference;
-
-import org.thoughtcrime.securesms.help.HelpFragment;
-import org.thoughtcrime.securesms.preferences.AdvancedPreferenceFragment;
-import org.thoughtcrime.securesms.preferences.AppProtectionPreferenceFragment;
-import org.thoughtcrime.securesms.preferences.AppearancePreferenceFragment;
-import org.thoughtcrime.securesms.preferences.ChatsPreferenceFragment;
-import org.thoughtcrime.securesms.preferences.CorrectedPreferenceFragment;
-import org.thoughtcrime.securesms.preferences.NotificationsPreferenceFragment;
-import org.thoughtcrime.securesms.preferences.SmsMmsPreferenceFragment;
-import org.thoughtcrime.securesms.preferences.StoragePreferenceFragment;
-import org.thoughtcrime.securesms.preferences.widgets.ProfilePreference;
-import org.thoughtcrime.securesms.profiles.edit.EditProfileActivity;
-import org.thoughtcrime.securesms.service.KeyCachingService;
-import org.thoughtcrime.securesms.util.DynamicLanguage;
-import org.thoughtcrime.securesms.util.DynamicTheme;
-import org.thoughtcrime.securesms.util.TextSecurePreferences;
-import org.thoughtcrime.securesms.util.ThemeUtil;
-
-/**
- * The Activity for application preference display and management.
- *
- * @author Moxie Marlinspike
- *
- */
-
-public class ApplicationPreferencesActivity extends PassphraseRequiredActionBarActivity
-    implements SharedPreferences.OnSharedPreferenceChangeListener
-{
-  @SuppressWarnings("unused")
-  private static final String TAG = ApplicationPreferencesActivity.class.getSimpleName();
-
-  private static final String PREFERENCE_CATEGORY_PROFILE        = "preference_category_profile";
-  private static final String PREFERENCE_CATEGORY_SMS_MMS        = "preference_category_sms_mms";
-  private static final String PREFERENCE_CATEGORY_NOTIFICATIONS  = "preference_category_notifications";
-  private static final String PREFERENCE_CATEGORY_APP_PROTECTION = "preference_category_app_protection";
-  private static final String PREFERENCE_CATEGORY_APPEARANCE     = "preference_category_appearance";
-  private static final String PREFERENCE_CATEGORY_CHATS          = "preference_category_chats";
-  private static final String PREFERENCE_CATEGORY_STORAGE        = "preference_category_storage";
-  private static final String PREFERENCE_CATEGORY_DEVICES        = "preference_category_devices";
-  private static final String PREFERENCE_CATEGORY_HELP           = "preference_category_help";
-  private static final String PREFERENCE_CATEGORY_ADVANCED       = "preference_category_advanced";
-
-  private final DynamicTheme    dynamicTheme    = new DynamicTheme();
-  private final DynamicLanguage dynamicLanguage = new DynamicLanguage();
-
-  @Override
-  protected void onPreCreate() {
-    dynamicTheme.onCreate(this);
-    dynamicLanguage.onCreate(this);
-  }
-
-  @Override
-  protected void onCreate(Bundle icicle, boolean ready) {
-    //noinspection ConstantConditions
-    this.getSupportActionBar().setDisplayHomeAsUpEnabled(true);
-
-    if (getIntent() != null && getIntent().getCategories() != null && getIntent().getCategories().contains("android.intent.category.NOTIFICATION_PREFERENCES")) {
-      initFragment(android.R.id.content, new NotificationsPreferenceFragment());
-    } else if (icicle == null) {
-      initFragment(android.R.id.content, new ApplicationPreferenceFragment());
-    }
-  }
-
-  @Override
-  public void onResume() {
-    super.onResume();
-    dynamicTheme.onResume(this);
-    dynamicLanguage.onResume(this);
-  }
-
-  @Override
-  protected void onActivityResult(int requestCode, int resultCode, Intent data)
-  {
-    super.onActivityResult(requestCode, resultCode, data);
-    Fragment fragment = getSupportFragmentManager().findFragmentById(android.R.id.content);
-    fragment.onActivityResult(requestCode, resultCode, data);
-  }
-
-  @Override
-  public boolean onSupportNavigateUp() {
-    FragmentManager fragmentManager = getSupportFragmentManager();
-    if (fragmentManager.getBackStackEntryCount() > 0) {
-      fragmentManager.popBackStack();
-    } else {
-      // TODO [greyson] Navigation
-      Intent intent = new Intent(this, MainActivity.class);
-      intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
-      startActivity(intent);
-      finish();
-    }
-    return true;
-  }
-
-  @Override
-  public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
-    if (key.equals(TextSecurePreferences.THEME_PREF)) {
-      recreate();
-    } else if (key.equals(TextSecurePreferences.LANGUAGE_PREF)) {
-      recreate();
-
-      Intent intent = new Intent(this, KeyCachingService.class);
-      intent.setAction(KeyCachingService.LOCALE_CHANGE_EVENT);
-      startService(intent);
-    }
-  }
-
-  public static class ApplicationPreferenceFragment extends CorrectedPreferenceFragment {
-
-    @Override
-    public void onCreate(Bundle icicle) {
-      super.onCreate(icicle);
-
-      this.findPreference(PREFERENCE_CATEGORY_PROFILE)
-          .setOnPreferenceClickListener(new ProfileClickListener());
-      this.findPreference(PREFERENCE_CATEGORY_SMS_MMS)
-        .setOnPreferenceClickListener(new CategoryClickListener(PREFERENCE_CATEGORY_SMS_MMS));
-      this.findPreference(PREFERENCE_CATEGORY_NOTIFICATIONS)
-        .setOnPreferenceClickListener(new CategoryClickListener(PREFERENCE_CATEGORY_NOTIFICATIONS));
-      this.findPreference(PREFERENCE_CATEGORY_APP_PROTECTION)
-        .setOnPreferenceClickListener(new CategoryClickListener(PREFERENCE_CATEGORY_APP_PROTECTION));
-      this.findPreference(PREFERENCE_CATEGORY_APPEARANCE)
-        .setOnPreferenceClickListener(new CategoryClickListener(PREFERENCE_CATEGORY_APPEARANCE));
-      this.findPreference(PREFERENCE_CATEGORY_CHATS)
-        .setOnPreferenceClickListener(new CategoryClickListener(PREFERENCE_CATEGORY_CHATS));
-      this.findPreference(PREFERENCE_CATEGORY_STORAGE)
-        .setOnPreferenceClickListener(new CategoryClickListener(PREFERENCE_CATEGORY_STORAGE));
-      this.findPreference(PREFERENCE_CATEGORY_DEVICES)
-        .setOnPreferenceClickListener(new CategoryClickListener(PREFERENCE_CATEGORY_DEVICES));
-      this.findPreference(PREFERENCE_CATEGORY_HELP)
-          .setOnPreferenceClickListener(new CategoryClickListener(PREFERENCE_CATEGORY_HELP));
-      this.findPreference(PREFERENCE_CATEGORY_ADVANCED)
-        .setOnPreferenceClickListener(new CategoryClickListener(PREFERENCE_CATEGORY_ADVANCED));
-
-      tintIcons();
-    }
-
-    private void tintIcons() {
-      if (Build.VERSION.SDK_INT >= 21) return;
-
-      Preference preference = this.findPreference(PREFERENCE_CATEGORY_SMS_MMS);
-      preference.getIcon().setColorFilter(ThemeUtil.getThemedColor(requireContext(), R.attr.icon_tint), PorterDuff.Mode.SRC_IN);
-    }
-
-    @Override
-    public void onCreatePreferences(@Nullable Bundle savedInstanceState, String rootKey) {
-      addPreferencesFromResource(R.xml.preferences);
-    }
-
-    @Override
-    public void onResume() {
-      super.onResume();
-      //noinspection ConstantConditions
-      ((ApplicationPreferencesActivity) getActivity()).getSupportActionBar().setTitle(R.string.text_secure_normal__menu_settings);
-      setCategorySummaries();
-      setCategoryVisibility();
-    }
-
-    private void setCategorySummaries() {
-      ((ProfilePreference)this.findPreference(PREFERENCE_CATEGORY_PROFILE)).refresh();
-
-      this.findPreference(PREFERENCE_CATEGORY_SMS_MMS)
-          .setSummary(SmsMmsPreferenceFragment.getSummary(getActivity()));
-      this.findPreference(PREFERENCE_CATEGORY_NOTIFICATIONS)
-          .setSummary(NotificationsPreferenceFragment.getSummary(getActivity()));
-      this.findPreference(PREFERENCE_CATEGORY_APP_PROTECTION)
-          .setSummary(AppProtectionPreferenceFragment.getSummary(getActivity()));
-      this.findPreference(PREFERENCE_CATEGORY_APPEARANCE)
-          .setSummary(AppearancePreferenceFragment.getSummary(getActivity()));
-      this.findPreference(PREFERENCE_CATEGORY_CHATS)
-          .setSummary(ChatsPreferenceFragment.getSummary(getActivity()));
-    }
-
-    private void setCategoryVisibility() {
-      Preference devicePreference = this.findPreference(PREFERENCE_CATEGORY_DEVICES);
-      if (devicePreference != null && !TextSecurePreferences.isPushRegistered(getActivity())) {
-        getPreferenceScreen().removePreference(devicePreference);
-      }
-    }
-
-    private class CategoryClickListener implements Preference.OnPreferenceClickListener {
-      private String category;
-
-      CategoryClickListener(String category) {
-        this.category = category;
-      }
-
-      @Override
-      public boolean onPreferenceClick(Preference preference) {
-        Fragment fragment = null;
-
-        switch (category) {
-        case PREFERENCE_CATEGORY_SMS_MMS:
-          fragment = new SmsMmsPreferenceFragment();
-          break;
-        case PREFERENCE_CATEGORY_NOTIFICATIONS:
-          fragment = new NotificationsPreferenceFragment();
-          break;
-        case PREFERENCE_CATEGORY_APP_PROTECTION:
-          fragment = new AppProtectionPreferenceFragment();
-          break;
-        case PREFERENCE_CATEGORY_APPEARANCE:
-          fragment = new AppearancePreferenceFragment();
-          break;
-        case PREFERENCE_CATEGORY_CHATS:
-          fragment = new ChatsPreferenceFragment();
-          break;
-        case PREFERENCE_CATEGORY_STORAGE:
-          fragment = new StoragePreferenceFragment();
-          break;
-        case PREFERENCE_CATEGORY_DEVICES:
-          Intent intent = new Intent(getActivity(), DeviceActivity.class);
-          startActivity(intent);
-          break;
-        case PREFERENCE_CATEGORY_ADVANCED:
-          fragment = new AdvancedPreferenceFragment();
-          break;
-        case PREFERENCE_CATEGORY_HELP:
-          fragment = new HelpFragment();
-          break;
-        default:
-          throw new AssertionError();
-        }
-
-        if (fragment != null) {
-          Bundle args = new Bundle();
-          fragment.setArguments(args);
-
-          FragmentManager     fragmentManager     = getActivity().getSupportFragmentManager();
-          FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
-
-          fragmentTransaction.setCustomAnimations(R.anim.slide_from_end, R.anim.slide_to_start, R.anim.slide_from_start, R.anim.slide_to_end);
-
-          fragmentTransaction.replace(android.R.id.content, fragment);
-          fragmentTransaction.addToBackStack(null);
-          fragmentTransaction.commit();
-        }
-
-        return true;
-      }
-    }
-
-    private class ProfileClickListener implements Preference.OnPreferenceClickListener {
-      @Override
-      public boolean onPreferenceClick(Preference preference) {
-        Intent intent = new Intent(preference.getContext(), EditProfileActivity.class);
-        intent.putExtra(EditProfileActivity.EXCLUDE_SYSTEM, true);
-        intent.putExtra(EditProfileActivity.DISPLAY_USERNAME, true);
-        intent.putExtra(EditProfileActivity.NEXT_BUTTON_TEXT, R.string.save);
-
-        requireActivity().startActivity(intent);
-        return true;
-      }
-    }
-  }
-
-}

app/src/main/java/org/thoughtcrime/securesms/AvatarPreviewActivity.java

@@ -0,0 +1,142 @@
+package org.thoughtcrime.securesms;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+import android.os.Bundle;
+import android.transition.TransitionInflater;
+import android.view.View;
+import android.widget.ImageView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.widget.Toolbar;
+import androidx.core.app.ActivityOptionsCompat;
+import androidx.core.graphics.drawable.RoundedBitmapDrawableFactory;
+
+import com.bumptech.glide.load.DataSource;
+import com.bumptech.glide.load.engine.DiskCacheStrategy;
+import com.bumptech.glide.load.engine.GlideException;
+import com.bumptech.glide.request.RequestListener;
+import com.bumptech.glide.request.target.CustomTarget;
+import com.bumptech.glide.request.target.Target;
+import com.bumptech.glide.request.transition.Transition;
+
+import org.signal.core.util.logging.Log;
+import org.thoughtcrime.securesms.contacts.avatars.ContactPhoto;
+import org.thoughtcrime.securesms.contacts.avatars.FallbackContactPhoto;
+import org.thoughtcrime.securesms.contacts.avatars.ProfileContactPhoto;
+import org.thoughtcrime.securesms.contacts.avatars.ResourceContactPhoto;
+import org.thoughtcrime.securesms.mms.GlideApp;
+import org.thoughtcrime.securesms.recipients.Recipient;
+import org.thoughtcrime.securesms.recipients.RecipientId;
+import org.thoughtcrime.securesms.util.FullscreenHelper;
+
+/**
+ * Activity for displaying avatars full screen.
+ */
+public final class AvatarPreviewActivity extends PassphraseRequiredActivity {
+
+  private static final String TAG = Log.tag(AvatarPreviewActivity.class);
+
+  private static final String RECIPIENT_ID_EXTRA = "recipient_id";
+
+  public static @NonNull Intent intentFromRecipientId(@NonNull Context context,
+                                                      @NonNull RecipientId recipientId)
+  {
+    Intent intent = new Intent(context, AvatarPreviewActivity.class);
+    intent.putExtra(RECIPIENT_ID_EXTRA, recipientId.serialize());
+    return intent;
+  }
+
+  public static Bundle createTransitionBundle(@NonNull Activity activity, @NonNull View from) {
+    return ActivityOptionsCompat.makeSceneTransitionAnimation(activity, from, "avatar").toBundle();
+  }
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState, boolean ready) {
+    super.onCreate(savedInstanceState, ready);
+
+    setTheme(R.style.TextSecure_MediaPreview);
+    setContentView(R.layout.contact_photo_preview_activity);
+
+    if (Build.VERSION.SDK_INT >= 21) {
+      postponeEnterTransition();
+      TransitionInflater inflater = TransitionInflater.from(this);
+      getWindow().setSharedElementEnterTransition(inflater.inflateTransition(R.transition.full_screen_avatar_image_enter_transition_set));
+      getWindow().setSharedElementReturnTransition(inflater.inflateTransition(R.transition.full_screen_avatar_image_return_transition_set));
+    }
+
+    Toolbar   toolbar = findViewById(R.id.toolbar);
+    ImageView avatar  = findViewById(R.id.avatar);
+
+    setSupportActionBar(toolbar);
+
+    requireSupportActionBar().setDisplayHomeAsUpEnabled(true);
+
+    Context     context     = getApplicationContext();
+    RecipientId recipientId = RecipientId.from(getIntent().getStringExtra(RECIPIENT_ID_EXTRA));
+
+    Recipient.live(recipientId).observe(this, recipient -> {
+      ContactPhoto contactPhoto  = recipient.isSelf() ? new ProfileContactPhoto(recipient, recipient.getProfileAvatar())
+                                                      : recipient.getContactPhoto();
+      FallbackContactPhoto fallbackPhoto = recipient.isSelf() ? new ResourceContactPhoto(R.drawable.ic_profile_outline_40, R.drawable.ic_profile_outline_20, R.drawable.ic_person_large)
+                                                              : recipient.getFallbackContactPhoto();
+
+      Resources resources = this.getResources();
+
+      GlideApp.with(this)
+              .asBitmap()
+              .load(contactPhoto)
+              .fallback(fallbackPhoto.asCallCard(this))
+              .error(fallbackPhoto.asCallCard(this))
+              .diskCacheStrategy(DiskCacheStrategy.ALL)
+              .addListener(new RequestListener<Bitmap>() {
+                @Override
+                public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Bitmap> target, boolean isFirstResource) {
+                  Log.w(TAG, "Unable to load avatar, or avatar removed, closing");
+                  finish();
+                  return false;
+                }
+
+                @Override
+                public boolean onResourceReady(Bitmap resource, Object model, Target<Bitmap> target, DataSource dataSource, boolean isFirstResource) {
+                  return false;
+                }
+              })
+              .into(new CustomTarget<Bitmap>() {
+                @Override
+                public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
+                  avatar.setImageDrawable(RoundedBitmapDrawableFactory.create(resources, resource));
+                  if (Build.VERSION.SDK_INT >= 21) {
+                    startPostponedEnterTransition();
+                  }
+                }
+
+                @Override
+                public void onLoadCleared(@Nullable Drawable placeholder) {
+                }
+              });
+
+      toolbar.setTitle(recipient.getDisplayName(context));
+    });
+
+    FullscreenHelper fullscreenHelper = new FullscreenHelper(this);
+
+    findViewById(android.R.id.content).setOnClickListener(v -> fullscreenHelper.toggleUiVisibility());
+
+    fullscreenHelper.configureToolbarSpacer(findViewById(R.id.toolbar_cutout_spacer));
+
+    fullscreenHelper.showAndHideWithSystemUI(getWindow(), findViewById(R.id.toolbar_layout));
+  }
+
+  @Override
+  public boolean onSupportNavigateUp() {
+    onBackPressed();
+    return true;
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/BaseActionBarActivity.java

@@ -1,101 +0,0 @@
-package org.thoughtcrime.securesms;
-
-import android.annotation.TargetApi;
-import android.content.Context;
-import android.content.Intent;
-import android.os.Build;
-import android.os.Build.VERSION_CODES;
-import android.os.Bundle;
-import androidx.annotation.NonNull;
-import androidx.core.app.ActivityCompat;
-import androidx.core.app.ActivityOptionsCompat;
-import androidx.appcompat.app.AppCompatActivity;
-import android.view.KeyEvent;
-import android.view.View;
-import android.view.ViewConfiguration;
-import android.view.WindowManager;
-
-import org.thoughtcrime.securesms.logging.Log;
-import org.thoughtcrime.securesms.util.TextSecurePreferences;
-import org.thoughtcrime.securesms.util.dynamiclanguage.DynamicLanguageActivityHelper;
-import org.thoughtcrime.securesms.util.dynamiclanguage.DynamicLanguageContextWrapper;
-
-import java.lang.reflect.Field;
-
-
-public abstract class BaseActionBarActivity extends AppCompatActivity {
-  private static final String TAG = BaseActionBarActivity.class.getSimpleName();
-
-  @Override
-  protected void onCreate(Bundle savedInstanceState) {
-    if (BaseActivity.isMenuWorkaroundRequired()) {
-      forceOverflowMenu();
-    }
-    super.onCreate(savedInstanceState);
-  }
-
-  @Override
-  protected void onResume() {
-    super.onResume();
-    initializeScreenshotSecurity();
-    DynamicLanguageActivityHelper.recreateIfNotInCorrectLanguage(this, TextSecurePreferences.getLanguage(this));
-  }
-
-  @Override
-  public boolean onKeyDown(int keyCode, KeyEvent event) {
-    return (keyCode == KeyEvent.KEYCODE_MENU && BaseActivity.isMenuWorkaroundRequired()) || super.onKeyDown(keyCode, event);
-  }
-
-  @Override
-  public boolean onKeyUp(int keyCode, @NonNull KeyEvent event) {
-    if (keyCode == KeyEvent.KEYCODE_MENU && BaseActivity.isMenuWorkaroundRequired()) {
-      openOptionsMenu();
-      return true;
-    }
-    return super.onKeyUp(keyCode, event);
-  }
-
-  private void initializeScreenshotSecurity() {
-    if (TextSecurePreferences.isScreenSecurityEnabled(this)) {
-      getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
-    } else {
-      getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE);
-    }
-  }
-
-  /**
-   * Modified from: http://stackoverflow.com/a/13098824
-   */
-  private void forceOverflowMenu() {
-    try {
-      ViewConfiguration config       = ViewConfiguration.get(this);
-      Field             menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
-      if(menuKeyField != null) {
-        menuKeyField.setAccessible(true);
-        menuKeyField.setBoolean(config, false);
-      }
-    } catch (IllegalAccessException e) {
-      Log.w(TAG, "Failed to force overflow menu.");
-    } catch (NoSuchFieldException e) {
-      Log.w(TAG, "Failed to force overflow menu.");
-    }
-  }
-
-  protected void startActivitySceneTransition(Intent intent, View sharedView, String transitionName) {
-    Bundle bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(this, sharedView, transitionName)
-                                         .toBundle();
-    ActivityCompat.startActivity(this, intent, bundle);
-  }
-
-  @TargetApi(VERSION_CODES.LOLLIPOP)
-  protected void setStatusBarColor(int color) {
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-      getWindow().setStatusBarColor(color);
-    }
-  }
-
-  @Override
-  protected void attachBaseContext(Context newBase) {
-    super.attachBaseContext(DynamicLanguageContextWrapper.updateContext(newBase, TextSecurePreferences.getLanguage(newBase)));
-  }
-}

app/src/main/java/org/thoughtcrime/securesms/BaseActivity.java

@@ -1,46 +1,116 @@
 package org.thoughtcrime.securesms;
 
 import android.content.Context;
-import android.os.Build;
+import android.content.Intent;
-import android.os.Build.VERSION;
+import android.content.res.Configuration;
-import android.os.Build.VERSION_CODES;
+import android.os.Bundle;
-import androidx.annotation.NonNull;
+import android.view.View;
-import androidx.fragment.app.FragmentActivity;
+import android.view.WindowManager;
-import android.view.KeyEvent;
 
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatDelegate;
+import androidx.core.app.ActivityCompat;
+import androidx.core.app.ActivityOptionsCompat;
+
+import org.signal.core.util.logging.Log;
+import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
+import org.thoughtcrime.securesms.util.AppStartup;
+import org.thoughtcrime.securesms.util.ConfigurationUtil;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
-import org.thoughtcrime.securesms.util.dynamiclanguage.DynamicLanguageActivityHelper;
 import org.thoughtcrime.securesms.util.dynamiclanguage.DynamicLanguageContextWrapper;
 
-public abstract class BaseActivity extends FragmentActivity {
+import java.util.Objects;
-  @Override
+
-  public boolean onKeyDown(int keyCode, KeyEvent event) {
+/**
-    return (keyCode == KeyEvent.KEYCODE_MENU && isMenuWorkaroundRequired()) || super.onKeyDown(keyCode, event);
+ * Base class for all activities. The vast majority of activities shouldn't extend this directly.
-  }
+ * Instead, they should extend {@link PassphraseRequiredActivity} so they're protected by
+ * screen lock.
+ */
+public abstract class BaseActivity extends AppCompatActivity {
+  private static final String TAG = Log.tag(BaseActivity.class);
 
   @Override
-  public boolean onKeyUp(int keyCode, @NonNull KeyEvent event) {
+  protected void onCreate(Bundle savedInstanceState) {
-    if (keyCode == KeyEvent.KEYCODE_MENU && isMenuWorkaroundRequired()) {
+    AppStartup.getInstance().onCriticalRenderEventStart();
-      openOptionsMenu();
+    logEvent("onCreate()");
-      return true;
+    super.onCreate(savedInstanceState);
-    }
+    AppStartup.getInstance().onCriticalRenderEventEnd();
-    return super.onKeyUp(keyCode, event);
-  }
-
-  public static boolean isMenuWorkaroundRequired() {
-    return VERSION.SDK_INT < VERSION_CODES.KITKAT          &&
-           VERSION.SDK_INT > VERSION_CODES.GINGERBREAD_MR1 &&
-           ("LGE".equalsIgnoreCase(Build.MANUFACTURER) || "E6710".equalsIgnoreCase(Build.DEVICE));
   }
 
   @Override
   protected void onResume() {
     super.onResume();
-    DynamicLanguageActivityHelper.recreateIfNotInCorrectLanguage(this, TextSecurePreferences.getLanguage(this));
+    initializeScreenshotSecurity();
   }
 
   @Override
-  protected void attachBaseContext(Context newBase) {
+  protected void onStart() {
-    super.attachBaseContext(DynamicLanguageContextWrapper.updateContext(newBase, TextSecurePreferences.getLanguage(newBase)));
+    logEvent("onStart()");
+    ApplicationDependencies.getShakeToReport().registerActivity(this);
+    super.onStart();
+  }
+
+  @Override
+  protected void onStop() {
+    logEvent("onStop()");
+    super.onStop();
+  }
+
+  @Override
+  protected void onDestroy() {
+    logEvent("onDestroy()");
+    super.onDestroy();
+  }
+
+  private void initializeScreenshotSecurity() {
+    if (TextSecurePreferences.isScreenSecurityEnabled(this)) {
+      getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
+    } else {
+      getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE);
+    }
+  }
+
+  protected void startActivitySceneTransition(Intent intent, View sharedView, String transitionName) {
+    Bundle bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(this, sharedView, transitionName)
+                                         .toBundle();
+    ActivityCompat.startActivity(this, intent, bundle);
+  }
+
+  @Override
+  protected void attachBaseContext(@NonNull Context newBase) {
+    super.attachBaseContext(newBase);
+
+    Configuration configuration      = new Configuration(newBase.getResources().getConfiguration());
+    int           appCompatNightMode = getDelegate().getLocalNightMode() != AppCompatDelegate.MODE_NIGHT_UNSPECIFIED ? getDelegate().getLocalNightMode()
+                                                                                                                     : AppCompatDelegate.getDefaultNightMode();
+
+    configuration.uiMode = (configuration.uiMode & ~Configuration.UI_MODE_NIGHT_MASK) | mapNightModeToConfigurationUiMode(newBase, appCompatNightMode);
+
+    applyOverrideConfiguration(configuration);
+  }
+
+  @Override
+  public void applyOverrideConfiguration(@NonNull Configuration overrideConfiguration) {
+    DynamicLanguageContextWrapper.prepareOverrideConfiguration(this, overrideConfiguration);
+    super.applyOverrideConfiguration(overrideConfiguration);
+  }
+
+  private void logEvent(@NonNull String event) {
+    Log.d(TAG, "[" + Log.tag(getClass()) + "] " + event);
+  }
+
+  public final @NonNull ActionBar requireSupportActionBar() {
+    return Objects.requireNonNull(getSupportActionBar());
+  }
+
+  private static int mapNightModeToConfigurationUiMode(@NonNull Context context, @AppCompatDelegate.NightMode int appCompatNightMode) {
+    if (appCompatNightMode == AppCompatDelegate.MODE_NIGHT_YES) {
+      return Configuration.UI_MODE_NIGHT_YES;
+    } else if (appCompatNightMode == AppCompatDelegate.MODE_NIGHT_NO) {
+      return Configuration.UI_MODE_NIGHT_NO;
+    }
+    return ConfigurationUtil.getNightModeConfiguration(context.getApplicationContext());
   }
 }

app/src/main/java/org/thoughtcrime/securesms/BindableConversationItem.java

@@ -1,39 +1,61 @@
 package org.thoughtcrime.securesms;
 
+import android.net.Uri;
+import android.view.View;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import android.view.View;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.lifecycle.Observer;
 
+import org.thoughtcrime.securesms.components.voice.VoiceNotePlaybackState;
 import org.thoughtcrime.securesms.contactshare.Contact;
+import org.thoughtcrime.securesms.conversation.ConversationMessage;
+import org.thoughtcrime.securesms.conversation.colors.Colorizable;
+import org.thoughtcrime.securesms.conversation.colors.Colorizer;
+import org.thoughtcrime.securesms.database.model.InMemoryMessageRecord;
 import org.thoughtcrime.securesms.database.model.MessageRecord;
 import org.thoughtcrime.securesms.database.model.MmsMessageRecord;
-import org.thoughtcrime.securesms.database.model.ReactionRecord;
+import org.thoughtcrime.securesms.giph.mp4.GiphyMp4Playable;
+import org.thoughtcrime.securesms.groups.GroupId;
+import org.thoughtcrime.securesms.groups.GroupMigrationMembershipChange;
 import org.thoughtcrime.securesms.linkpreview.LinkPreview;
 import org.thoughtcrime.securesms.mms.GlideRequests;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
 import org.thoughtcrime.securesms.stickers.StickerLocator;
+import org.thoughtcrime.securesms.video.exo.AttachmentMediaSourceFactory;
 import org.whispersystems.libsignal.util.guava.Optional;
 
 import java.util.List;
 import java.util.Locale;
 import java.util.Set;
 
-public interface BindableConversationItem extends Unbindable {
+public interface BindableConversationItem extends Unbindable, GiphyMp4Playable, Colorizable {
-  void bind(@NonNull MessageRecord           messageRecord,
+  void bind(@NonNull LifecycleOwner lifecycleOwner,
+            @NonNull ConversationMessage messageRecord,
             @NonNull Optional<MessageRecord> previousMessageRecord,
             @NonNull Optional<MessageRecord> nextMessageRecord,
-            @NonNull GlideRequests           glideRequests,
+            @NonNull GlideRequests glideRequests,
-            @NonNull Locale                  locale,
+            @NonNull Locale locale,
-            @NonNull Set<MessageRecord>      batchSelected,
+            @NonNull Set<ConversationMessage> batchSelected,
-            @NonNull Recipient               recipients,
+            @NonNull Recipient recipients,
-            @Nullable String                 searchQuery,
+            @Nullable String searchQuery,
-                     boolean                 pulseHighlight);
+            boolean pulseMention,
+            boolean hasWallpaper,
+            boolean isMessageRequestAccepted,
+            @NonNull AttachmentMediaSourceFactory attachmentMediaSourceFactory,
+            boolean canPlayInline,
+            @NonNull Colorizer colorizer);
 
-  MessageRecord getMessageRecord();
+  ConversationMessage getConversationMessage();
 
   void setEventListener(@Nullable EventListener listener);
 
+  default void updateTimestamps() {
+    // Intentionally Blank.
+  }
+
   interface EventListener {
     void onQuoteClicked(MmsMessageRecord messageRecord);
     void onLinkPreviewClicked(@NonNull LinkPreview linkPreview);
@@ -44,6 +66,27 @@ public interface BindableConversationItem extends Unbindable {
     void onAddToContactsClicked(@NonNull Contact contact);
     void onMessageSharedContactClicked(@NonNull List<Recipient> choices);
     void onInviteSharedContactClicked(@NonNull List<Recipient> choices);
-    void onReactionClicked(long messageId, boolean isMms);
+    void onReactionClicked(@NonNull View reactionTarget, long messageId, boolean isMms);
+    void onGroupMemberClicked(@NonNull RecipientId recipientId, @NonNull GroupId groupId);
+    void onMessageWithErrorClicked(@NonNull MessageRecord messageRecord);
+    void onMessageWithRecaptchaNeededClicked(@NonNull MessageRecord messageRecord);
+    void onRegisterVoiceNoteCallbacks(@NonNull Observer<VoiceNotePlaybackState> onPlaybackStartObserver);
+    void onUnregisterVoiceNoteCallbacks(@NonNull Observer<VoiceNotePlaybackState> onPlaybackStartObserver);
+    void onVoiceNotePause(@NonNull Uri uri);
+    void onVoiceNotePlay(@NonNull Uri uri, long messageId, double position);
+    void onVoiceNoteSeekTo(@NonNull Uri uri, double position);
+    void onGroupMigrationLearnMoreClicked(@NonNull GroupMigrationMembershipChange membershipChange);
+    void onChatSessionRefreshLearnMoreClicked();
+    void onBadDecryptLearnMoreClicked(@NonNull RecipientId author);
+    void onSafetyNumberLearnMoreClicked(@NonNull Recipient recipient);
+    void onJoinGroupCallClicked();
+    void onInviteFriendsToGroupClicked(@NonNull GroupId.V2 groupId);
+    void onEnableCallNotificationsClicked();
+    void onPlayInlineContent(ConversationMessage conversationMessage);
+    void onInMemoryMessageClicked(@NonNull InMemoryMessageRecord messageRecord);
+    void onViewGroupDescriptionChange(@Nullable GroupId groupId, @NonNull String description, boolean isMessageRequestAccepted);
+
+    /** @return true if handled, false if you want to let the normal url handling continue */
+    boolean onUrlClicked(@NonNull String url);
   }
 }

app/src/main/java/org/thoughtcrime/securesms/BindableConversationListItem.java

@@ -10,8 +10,11 @@ import java.util.Set;
 
 public interface BindableConversationListItem extends Unbindable {
 
-  public void bind(@NonNull ThreadRecord thread,
+  void bind(@NonNull ThreadRecord thread,
-                   @NonNull GlideRequests glideRequests, @NonNull Locale locale,
+            @NonNull GlideRequests glideRequests, @NonNull Locale locale,
-                   @NonNull Set<Long> typingThreads,
+            @NonNull Set<Long> typingThreads,
-                   @NonNull Set<Long> selectedThreads, boolean batchMode);
+            @NonNull Set<Long> selectedThreads, boolean batchMode);
+
+  void setBatchMode(boolean batchMode);
+  void updateTypingIndicator(@NonNull Set<Long> typingThreads);
 }

app/src/main/java/org/thoughtcrime/securesms/BlockUnblockDialog.java

@@ -9,11 +9,10 @@ import androidx.annotation.WorkerThread;
 import androidx.appcompat.app.AlertDialog;
 import androidx.lifecycle.Lifecycle;
 
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+
 import org.thoughtcrime.securesms.database.DatabaseFactory;
 import org.thoughtcrime.securesms.recipients.Recipient;
-import org.thoughtcrime.securesms.recipients.RecipientId;
-import org.thoughtcrime.securesms.recipients.RecipientUtil;
-import org.thoughtcrime.securesms.util.concurrent.SignalExecutors;
 import org.thoughtcrime.securesms.util.concurrent.SimpleTask;
 
 /**
@@ -33,15 +32,15 @@ public final class BlockUnblockDialog {
                    AlertDialog.Builder::show);
   }
 
-  public static void showBlockAndDeleteFor(@NonNull Context context,
+  public static void showBlockAndReportSpamFor(@NonNull Context context,
-                                           @NonNull Lifecycle lifecycle,
+                                               @NonNull Lifecycle lifecycle,
-                                           @NonNull Recipient recipient,
+                                               @NonNull Recipient recipient,
-                                           @NonNull Runnable onBlock,
+                                               @NonNull Runnable onBlock,
-                                           @NonNull Runnable onBlockAndDelete)
+                                               @NonNull Runnable onBlockAndReportSpam)
   {
     SimpleTask.run(lifecycle,
-        () -> buildBlockFor(context, recipient, onBlock, onBlockAndDelete),
+                   () -> buildBlockFor(context, recipient, onBlock, onBlockAndReportSpam),
-        AlertDialog.Builder::show);
+                   AlertDialog.Builder::show);
   }
 
   public static void showUnblockFor(@NonNull Context context,
@@ -58,11 +57,11 @@ public final class BlockUnblockDialog {
   private static AlertDialog.Builder buildBlockFor(@NonNull Context context,
                                                    @NonNull Recipient recipient,
                                                    @NonNull Runnable onBlock,
-                                                   @Nullable Runnable onBlockAndDelete)
+                                                   @Nullable Runnable onBlockAndReportSpam)
   {
     recipient = recipient.resolve();
 
-    AlertDialog.Builder builder   = new AlertDialog.Builder(context);
+    AlertDialog.Builder builder   = new MaterialAlertDialogBuilder(context);
     Resources           resources = context.getResources();
 
     if (recipient.isGroup()) {
@@ -81,10 +80,10 @@ public final class BlockUnblockDialog {
       builder.setTitle(resources.getString(R.string.BlockUnblockDialog_block_s, recipient.getDisplayName(context)));
       builder.setMessage(R.string.BlockUnblockDialog_blocked_people_wont_be_able_to_call_you_or_send_you_messages);
 
-      if (onBlockAndDelete != null) {
+      if (onBlockAndReportSpam != null) {
         builder.setNeutralButton(android.R.string.cancel, null);
-        builder.setPositiveButton(R.string.BlockUnblockDialog_block_and_delete, (d, w) -> onBlockAndDelete.run());
+        builder.setNegativeButton(R.string.BlockUnblockDialog_report_spam_and_block, (d, w) -> onBlockAndReportSpam.run());
-        builder.setNegativeButton(R.string.BlockUnblockDialog_block, (d, w) -> onBlock.run());
+        builder.setPositiveButton(R.string.BlockUnblockDialog_block, (d, w) -> onBlock.run());
       } else {
         builder.setPositiveButton(R.string.BlockUnblockDialog_block, ((dialog, which) -> onBlock.run()));
         builder.setNegativeButton(android.R.string.cancel, null);
@@ -101,7 +100,7 @@ public final class BlockUnblockDialog {
   {
     recipient = recipient.resolve();
 
-    AlertDialog.Builder builder   = new AlertDialog.Builder(context);
+    AlertDialog.Builder builder   = new MaterialAlertDialogBuilder(context);
     Resources           resources = context.getResources();
 
     if (recipient.isGroup()) {

app/src/main/java/org/thoughtcrime/securesms/BlockedContactsActivity.java

@@ -1,140 +0,0 @@
-package org.thoughtcrime.securesms;
-
-import android.content.Context;
-import android.database.Cursor;
-import android.os.Bundle;
-import android.view.LayoutInflater;
-import android.view.MenuItem;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.AdapterView;
-import android.widget.ListView;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.cursoradapter.widget.CursorAdapter;
-import androidx.fragment.app.ListFragment;
-import androidx.loader.app.LoaderManager;
-import androidx.loader.content.Loader;
-
-import org.thoughtcrime.securesms.database.RecipientDatabase;
-import org.thoughtcrime.securesms.database.loaders.BlockedContactsLoader;
-import org.thoughtcrime.securesms.mms.GlideApp;
-import org.thoughtcrime.securesms.mms.GlideRequests;
-import org.thoughtcrime.securesms.preferences.BlockedContactListItem;
-import org.thoughtcrime.securesms.recipients.LiveRecipient;
-import org.thoughtcrime.securesms.recipients.Recipient;
-import org.thoughtcrime.securesms.recipients.RecipientId;
-import org.thoughtcrime.securesms.recipients.RecipientUtil;
-import org.thoughtcrime.securesms.util.DynamicTheme;
-
-public class BlockedContactsActivity extends PassphraseRequiredActionBarActivity {
-
-  private final DynamicTheme dynamicTheme = new DynamicTheme();
-
-  @Override
-  public void onPreCreate() {
-    dynamicTheme.onCreate(this);
-  }
-
-  @Override
-  public void onCreate(Bundle bundle, boolean ready) {
-    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
-    getSupportActionBar().setTitle(R.string.BlockedContactsActivity_blocked_contacts);
-    initFragment(android.R.id.content, new BlockedContactsFragment());
-  }
-
-  @Override
-  public void onResume() {
-    super.onResume();
-    dynamicTheme.onResume(this);
-  }
-
-  @Override
-  public boolean onSupportNavigateUp() {
-    onBackPressed();
-    return true;
-  }
-
-  public static class BlockedContactsFragment
-      extends ListFragment
-      implements LoaderManager.LoaderCallbacks<Cursor>, ListView.OnItemClickListener
-  {
-
-    @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) {
-      return inflater.inflate(R.layout.blocked_contacts_fragment, container, false);
-    }
-
-    @Override
-    public void onCreate(Bundle bundle) {
-      super.onCreate(bundle);
-      setListAdapter(new BlockedContactAdapter(requireActivity(), GlideApp.with(this), null));
-      LoaderManager.getInstance(this).initLoader(0, null, this);
-    }
-
-    @Override
-    public void onStart() {
-      super.onStart();
-      LoaderManager.getInstance(this).restartLoader(0, null, this);
-    }
-
-    @Override
-    public void onActivityCreated(Bundle bundle) {
-      super.onActivityCreated(bundle);
-      getListView().setOnItemClickListener(this);
-    }
-
-    @Override
-    public @NonNull Loader<Cursor> onCreateLoader(int id, Bundle args) {
-      return new BlockedContactsLoader(getActivity());
-    }
-
-    @Override
-    public void onLoadFinished(@NonNull Loader<Cursor> loader, Cursor data) {
-      if (getListAdapter() != null) {
-        ((CursorAdapter) getListAdapter()).changeCursor(data);
-      }
-    }
-
-    @Override
-    public void onLoaderReset(@NonNull Loader<Cursor> loader) {
-      if (getListAdapter() != null) {
-        ((CursorAdapter) getListAdapter()).changeCursor(null);
-      }
-    }
-
-    @Override
-    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
-      Recipient recipient = ((BlockedContactListItem)view).getRecipient();
-      BlockUnblockDialog.showUnblockFor(requireContext(), getLifecycle(), recipient, () -> {
-        RecipientUtil.unblock(requireContext(), recipient);
-        LoaderManager.getInstance(this).restartLoader(0, null, this);
-      });
-    }
-
-    private static class BlockedContactAdapter extends CursorAdapter {
-
-      private final GlideRequests glideRequests;
-
-      BlockedContactAdapter(@NonNull Context context, @NonNull GlideRequests glideRequests, @Nullable Cursor c) {
-        super(context, c);
-        this.glideRequests = glideRequests;
-      }
-
-      @Override
-      public View newView(Context context, Cursor cursor, ViewGroup parent) {
-        return LayoutInflater.from(context)
-                             .inflate(R.layout.blocked_contact_list_item, parent, false);
-      }
-
-      @Override
-      public void bindView(View view, Context context, Cursor cursor) {
-        RecipientId   recipientId = RecipientId.from(cursor.getLong(cursor.getColumnIndexOrThrow(RecipientDatabase.ID)));
-        LiveRecipient recipient   = Recipient.live(recipientId);
-
-        ((BlockedContactListItem) view).set(glideRequests, recipient);
-      }
-    }
-  }
-}

app/src/main/java/org/thoughtcrime/securesms/ClearAvatarPromptActivity.java

@@ -0,0 +1,48 @@
+package org.thoughtcrime.securesms;
+
+
+import android.app.Activity;
+import android.content.Intent;
+import android.view.ContextThemeWrapper;
+
+import androidx.appcompat.app.AlertDialog;
+
+import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
+import org.thoughtcrime.securesms.util.DynamicTheme;
+
+public final class ClearAvatarPromptActivity extends Activity {
+
+  private static final String ARG_TITLE = "arg_title";
+
+  public static Intent createForUserProfilePhoto() {
+    Intent intent = new Intent(ApplicationDependencies.getApplication(), ClearAvatarPromptActivity.class);
+    intent.putExtra(ARG_TITLE, R.string.ClearProfileActivity_remove_profile_photo);
+    return intent;
+  }
+
+  public static Intent createForGroupProfilePhoto() {
+    Intent intent = new Intent(ApplicationDependencies.getApplication(), ClearAvatarPromptActivity.class);
+    intent.putExtra(ARG_TITLE, R.string.ClearProfileActivity_remove_group_photo);
+    return intent;
+  }
+
+  @Override
+  public void onResume() {
+    super.onResume();
+
+    int message = getIntent().getIntExtra(ARG_TITLE, 0);
+
+    new AlertDialog.Builder(new ContextThemeWrapper(this, DynamicTheme.isDarkTheme(this) ? R.style.TextSecure_DarkTheme : R.style.TextSecure_LightTheme))
+                   .setMessage(message)
+                   .setNegativeButton(android.R.string.cancel, (dialog, which) -> finish())
+                   .setPositiveButton(R.string.ClearProfileActivity_remove, (dialog, which) -> {
+                     Intent result = new Intent();
+                     result.putExtra("delete", true);
+                     setResult(Activity.RESULT_OK, result);
+                     finish();
+                   })
+                   .setOnCancelListener(dialog -> finish())
+                   .show();
+  }
+
+}

app/src/main/java/org/thoughtcrime/securesms/ClearProfileAvatarActivity.java

@@ -1,26 +0,0 @@
-package org.thoughtcrime.securesms;
-
-
-import android.app.Activity;
-import android.content.Intent;
-import androidx.appcompat.app.AlertDialog;
-
-public class ClearProfileAvatarActivity extends Activity {
-
-  @Override
-  public void onResume() {
-    super.onResume();
-
-    new AlertDialog.Builder(this)
-        .setTitle(R.string.ClearProfileActivity_remove_profile_photo)
-        .setNegativeButton(android.R.string.cancel, (dialog, which) -> finish())
-        .setPositiveButton(R.string.ClearProfileActivity_remove, (dialog, which) -> {
-          Intent result = new Intent();
-          result.putExtra("delete", true);
-          setResult(Activity.RESULT_OK, result);
-          finish();
-        })
-        .show();
-  }
-
-}

app/src/main/java/org/thoughtcrime/securesms/ConfirmIdentityDialog.java

@@ -3,7 +3,6 @@ package org.thoughtcrime.securesms;
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.DialogInterface;
-import android.database.Cursor;
 import android.os.AsyncTask;
 import android.text.SpannableString;
 import android.text.Spanned;
@@ -12,12 +11,11 @@ import android.widget.TextView;
 
 import androidx.appcompat.app.AlertDialog;
 
+import org.signal.core.util.logging.Log;
+import org.thoughtcrime.securesms.crypto.ReentrantSessionLock;
 import org.thoughtcrime.securesms.crypto.storage.TextSecureIdentityKeyStore;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
-import org.thoughtcrime.securesms.database.MmsDatabase;
+import org.thoughtcrime.securesms.database.MessageDatabase;
-import org.thoughtcrime.securesms.database.MmsSmsDatabase;
-import org.thoughtcrime.securesms.database.PushDatabase;
-import org.thoughtcrime.securesms.database.SmsDatabase;
 import org.thoughtcrime.securesms.database.documents.IdentityKeyMismatch;
 import org.thoughtcrime.securesms.database.model.MessageRecord;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
@@ -30,17 +28,16 @@ import org.thoughtcrime.securesms.util.Base64;
 import org.thoughtcrime.securesms.util.VerifySpan;
 import org.whispersystems.libsignal.SignalProtocolAddress;
 import org.whispersystems.libsignal.util.guava.Optional;
+import org.whispersystems.signalservice.api.SignalSessionLock;
 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
 import org.whispersystems.signalservice.internal.push.SignalServiceProtos;
 
 import java.io.IOException;
 
-import static org.whispersystems.libsignal.SessionCipher.SESSION_LOCK;
-
 public class ConfirmIdentityDialog extends AlertDialog {
 
   @SuppressWarnings("unused")
-  private static final String TAG = ConfirmIdentityDialog.class.getSimpleName();
+  private static final String TAG = Log.tag(ConfirmIdentityDialog.class);
 
   private OnClickListener callback;
 
@@ -51,7 +48,7 @@ public class ConfirmIdentityDialog extends AlertDialog {
     super(context);
 
       Recipient       recipient       = Recipient.resolved(mismatch.getRecipientId(context));
-      String          name            = recipient.toShortString(context);
+      String          name            = recipient.getDisplayName(context);
       String          introduction    = context.getString(R.string.ConfirmIdentityDialog_your_safety_number_with_s_has_changed, name, name);
       SpannableString spannableString = new SpannableString(introduction + " " +
                                                             context.getString(R.string.ConfirmIdentityDialog_you_may_wish_to_verify_your_safety_number_with_this_contact));
@@ -97,7 +94,7 @@ public class ConfirmIdentityDialog extends AlertDialog {
       {
         @Override
         protected Void doInBackground(Void... params) {
-          synchronized (SESSION_LOCK) {
+          try (SignalSessionLock.Lock unused = ReentrantSessionLock.INSTANCE.acquire()) {
             SignalProtocolAddress      mismatchAddress  = new SignalProtocolAddress(Recipient.resolved(recipientId).requireServiceId(), 1);
             TextSecureIdentityKeyStore identityKeyStore = new TextSecureIdentityKeyStore(getContext());
 
@@ -105,7 +102,6 @@ public class ConfirmIdentityDialog extends AlertDialog {
           }
 
           processMessageRecord(messageRecord);
-          processPendingMessageRecords(messageRecord.getThreadId(), mismatch);
 
           return null;
         }
@@ -115,29 +111,9 @@ public class ConfirmIdentityDialog extends AlertDialog {
           else                            processIncomingMessageRecord(messageRecord);
         }
 
-        private void processPendingMessageRecords(long threadId, IdentityKeyMismatch mismatch) {
-          MmsSmsDatabase        mmsSmsDatabase = DatabaseFactory.getMmsSmsDatabase(getContext());
-          Cursor                cursor         = mmsSmsDatabase.getIdentityConflictMessagesForThread(threadId);
-          MmsSmsDatabase.Reader reader         = mmsSmsDatabase.readerFor(cursor);
-          MessageRecord         record;
-
-          try {
-            while ((record = reader.getNext()) != null) {
-              for (IdentityKeyMismatch recordMismatch : record.getIdentityKeyMismatches()) {
-                if (mismatch.equals(recordMismatch)) {
-                  processMessageRecord(record);
-                }
-              }
-            }
-          } finally {
-            if (reader != null)
-              reader.close();
-          }
-        }
-
         private void processOutgoingMessageRecord(MessageRecord messageRecord) {
-          SmsDatabase        smsDatabase        = DatabaseFactory.getSmsDatabase(getContext());
+          MessageDatabase smsDatabase = DatabaseFactory.getSmsDatabase(getContext());
-          MmsDatabase        mmsDatabase        = DatabaseFactory.getMmsDatabase(getContext());
+          MessageDatabase mmsDatabase = DatabaseFactory.getMmsDatabase(getContext());
 
           if (messageRecord.isMms()) {
             mmsDatabase.removeMismatchedIdentity(messageRecord.getId(),
@@ -160,8 +136,7 @@ public class ConfirmIdentityDialog extends AlertDialog {
 
         private void processIncomingMessageRecord(MessageRecord messageRecord) {
           try {
-            PushDatabase pushDatabase = DatabaseFactory.getPushDatabase(getContext());
+            MessageDatabase smsDatabase  = DatabaseFactory.getSmsDatabase(getContext());
-            SmsDatabase  smsDatabase  = DatabaseFactory.getSmsDatabase(getContext());
 
             smsDatabase.removeMismatchedIdentity(messageRecord.getId(),
                                                  mismatch.getRecipientId(getContext()),
@@ -175,11 +150,11 @@ public class ConfirmIdentityDialog extends AlertDialog {
                                                                        messageRecord.getDateSent(),
                                                                        legacy ? Base64.decode(messageRecord.getBody()) : null,
                                                                        !legacy ? Base64.decode(messageRecord.getBody()) : null,
-                                                                       0, null);
+                                                                       0,
+                                                                       0,
+                                                                       null);
 
-            long pushId = pushDatabase.insert(envelope);
+            ApplicationDependencies.getJobManager().add(new PushDecryptMessageJob(getContext(), envelope, messageRecord.getId()));
-
-            ApplicationDependencies.getJobManager().add(new PushDecryptMessageJob(getContext(), pushId, messageRecord.getId()));
           } catch (IOException e) {
             throw new AssertionError(e);
           }

app/src/main/java/org/thoughtcrime/securesms/ContactSelectionActivity.java

@@ -19,20 +19,19 @@ package org.thoughtcrime.securesms;
 import android.content.Context;
 import android.os.AsyncTask;
 import android.os.Bundle;
+
 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
 
-import org.thoughtcrime.securesms.logging.Log;
+import org.signal.core.util.logging.Log;
-
 import org.thoughtcrime.securesms.components.ContactFilterToolbar;
 import org.thoughtcrime.securesms.contacts.ContactsCursorLoader.DisplayMode;
 import org.thoughtcrime.securesms.contacts.sync.DirectoryHelper;
-import org.thoughtcrime.securesms.recipients.Recipient;
+import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.recipients.RecipientId;
-import org.thoughtcrime.securesms.util.DynamicLanguage;
 import org.thoughtcrime.securesms.util.DynamicNoActionBarTheme;
 import org.thoughtcrime.securesms.util.DynamicTheme;
-import org.thoughtcrime.securesms.util.TextSecurePreferences;
+import org.thoughtcrime.securesms.util.ServiceUtil;
-import org.thoughtcrime.securesms.util.ViewUtil;
+import org.thoughtcrime.securesms.util.Util;
 import org.whispersystems.libsignal.util.guava.Optional;
 
 import java.io.IOException;
@@ -44,14 +43,16 @@ import java.lang.ref.WeakReference;
  * @author Moxie Marlinspike
  *
  */
-public abstract class ContactSelectionActivity extends PassphraseRequiredActionBarActivity
+public abstract class ContactSelectionActivity extends PassphraseRequiredActivity
                                                implements SwipeRefreshLayout.OnRefreshListener,
-                                                          ContactSelectionListFragment.OnContactSelectedListener
+                                                          ContactSelectionListFragment.OnContactSelectedListener,
+                                                          ContactSelectionListFragment.ScrollCallback
 {
-  private static final String TAG = ContactSelectionActivity.class.getSimpleName();
+  private static final String TAG = Log.tag(ContactSelectionActivity.class);
 
-  private final DynamicTheme    dynamicTheme    = new DynamicNoActionBarTheme();
+  public static final String EXTRA_LAYOUT_RES_ID = "layout_res_id";
-  private final DynamicLanguage dynamicLanguage = new DynamicLanguage();
+
+  private final DynamicTheme dynamicTheme = new DynamicNoActionBarTheme();
 
   protected ContactSelectionListFragment contactsFragment;
 
@@ -60,18 +61,17 @@ public abstract class ContactSelectionActivity extends PassphraseRequiredActionB
   @Override
   protected void onPreCreate() {
     dynamicTheme.onCreate(this);
-    dynamicLanguage.onCreate(this);
   }
 
   @Override
   protected void onCreate(Bundle icicle, boolean ready) {
     if (!getIntent().hasExtra(ContactSelectionListFragment.DISPLAY_MODE)) {
-      int displayMode = TextSecurePreferences.isSmsEnabled(this) ? DisplayMode.FLAG_ALL
+      int displayMode = Util.isDefaultSmsProvider(this) ? DisplayMode.FLAG_ALL
-                                                                 : DisplayMode.FLAG_PUSH | DisplayMode.FLAG_ACTIVE_GROUPS | DisplayMode.FLAG_INACTIVE_GROUPS;
+                                                        : DisplayMode.FLAG_PUSH | DisplayMode.FLAG_ACTIVE_GROUPS | DisplayMode.FLAG_INACTIVE_GROUPS | DisplayMode.FLAG_SELF;
       getIntent().putExtra(ContactSelectionListFragment.DISPLAY_MODE, displayMode);
     }
 
-    setContentView(R.layout.contact_selection_activity);
+    setContentView(getIntent().getIntExtra(EXTRA_LAYOUT_RES_ID, R.layout.contact_selection_activity));
 
     initializeToolbar();
     initializeResources();
@@ -82,7 +82,6 @@ public abstract class ContactSelectionActivity extends PassphraseRequiredActionB
   public void onResume() {
     super.onResume();
     dynamicTheme.onResume(this);
-    dynamicLanguage.onResume(this);
   }
 
   protected ContactFilterToolbar getToolbar() {
@@ -90,10 +89,9 @@ public abstract class ContactSelectionActivity extends PassphraseRequiredActionB
   }
 
   private void initializeToolbar() {
-    this.toolbar = ViewUtil.findById(this, R.id.toolbar);
+    this.toolbar = findViewById(R.id.toolbar);
     setSupportActionBar(toolbar);
 
-    assert  getSupportActionBar() != null;
     getSupportActionBar().setDisplayHomeAsUpEnabled(false);
     getSupportActionBar().setDisplayShowTitleEnabled(false);
     getSupportActionBar().setIcon(null);
@@ -102,7 +100,6 @@ public abstract class ContactSelectionActivity extends PassphraseRequiredActionB
 
   private void initializeResources() {
     contactsFragment = (ContactSelectionListFragment) getSupportFragmentManager().findFragmentById(R.id.contact_selection_list_fragment);
-    contactsFragment.setOnContactSelectedListener(this);
     contactsFragment.setOnRefreshListener(this);
   }
 
@@ -116,11 +113,24 @@ public abstract class ContactSelectionActivity extends PassphraseRequiredActionB
   }
 
   @Override
-  public void onContactSelected(Optional<RecipientId> recipientId, String number) {}
+  public boolean onBeforeContactSelected(Optional<RecipientId> recipientId, String number) {
+    return true;
+  }
 
   @Override
   public void onContactDeselected(Optional<RecipientId> recipientId, String number) {}
 
+  @Override
+  public void onBeginScroll() {
+    hideKeyboard();
+  }
+
+  private void hideKeyboard() {
+    ServiceUtil.getInputMethodManager(this)
+               .hideSoftInputFromWindow(toolbar.getWindowToken(), 0);
+    toolbar.clearFocus();
+  }
+
   private static class RefreshDirectoryTask extends AsyncTask<Context, Void, Void> {
 
     private final WeakReference<ContactSelectionActivity> activity;

app/src/main/java/org/thoughtcrime/securesms/ContactSelectionListFragment.java

@@ -18,41 +18,60 @@ package org.thoughtcrime.securesms;
 
 
 import android.Manifest;
+import android.animation.LayoutTransition;
 import android.annotation.SuppressLint;
 import android.content.Context;
+import android.content.Intent;
 import android.database.Cursor;
 import android.os.AsyncTask;
 import android.os.Bundle;
+import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.WindowManager;
 import android.widget.Button;
+import android.widget.HorizontalScrollView;
 import android.widget.TextView;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
-import androidx.fragment.app.Fragment;
+import androidx.constraintlayout.widget.ConstraintLayout;
+import androidx.constraintlayout.widget.ConstraintSet;
+import androidx.fragment.app.FragmentActivity;
 import androidx.loader.app.LoaderManager;
 import androidx.loader.content.Loader;
+import androidx.recyclerview.widget.DefaultItemAnimator;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
+import androidx.transition.AutoTransition;
+import androidx.transition.TransitionManager;
 
+import com.annimon.stream.Collectors;
+import com.annimon.stream.Stream;
+import com.google.android.material.chip.ChipGroup;
 import com.pnikosis.materialishprogress.ProgressWheel;
 
+import org.signal.core.util.logging.Log;
 import org.thoughtcrime.securesms.components.RecyclerViewFastScroller;
+import org.thoughtcrime.securesms.components.emoji.WarningTextView;
+import org.thoughtcrime.securesms.contacts.AbstractContactsCursorLoader;
+import org.thoughtcrime.securesms.contacts.ContactChip;
 import org.thoughtcrime.securesms.contacts.ContactSelectionListAdapter;
 import org.thoughtcrime.securesms.contacts.ContactSelectionListItem;
 import org.thoughtcrime.securesms.contacts.ContactsCursorLoader;
 import org.thoughtcrime.securesms.contacts.ContactsCursorLoader.DisplayMode;
 import org.thoughtcrime.securesms.contacts.SelectedContact;
-import org.thoughtcrime.securesms.logging.Log;
-import org.thoughtcrime.securesms.mms.GlideApp;
-import org.thoughtcrime.securesms.permissions.Permissions;
 import org.thoughtcrime.securesms.contacts.sync.DirectoryHelper;
+import org.thoughtcrime.securesms.groups.SelectionLimits;
+import org.thoughtcrime.securesms.groups.ui.GroupLimitDialog;
+import org.thoughtcrime.securesms.mms.GlideApp;
+import org.thoughtcrime.securesms.mms.GlideRequests;
+import org.thoughtcrime.securesms.permissions.Permissions;
+import org.thoughtcrime.securesms.recipients.LiveRecipient;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
 import org.thoughtcrime.securesms.util.StickyHeaderDecoration;
@@ -66,7 +85,7 @@ import org.thoughtcrime.securesms.util.views.SimpleProgressDialog;
 import org.whispersystems.libsignal.util.guava.Optional;
 
 import java.io.IOException;
-import java.util.LinkedList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Set;
 
@@ -76,39 +95,92 @@ import java.util.Set;
  * @author Moxie Marlinspike
  *
  */
-public final class ContactSelectionListFragment extends    Fragment
+public final class ContactSelectionListFragment extends LoggingFragment
                                                 implements LoaderManager.LoaderCallbacks<Cursor>
 {
   @SuppressWarnings("unused")
   private static final String TAG = Log.tag(ContactSelectionListFragment.class);
 
-  public static final String DISPLAY_MODE = "display_mode";
+  private static final int CHIP_GROUP_EMPTY_CHILD_COUNT  = 1;
-  public static final String MULTI_SELECT = "multi_select";
+  private static final int CHIP_GROUP_REVEAL_DURATION_MS = 150;
-  public static final String REFRESHABLE  = "refreshable";
-  public static final String RECENTS      = "recents";
 
-  private TextView                    emptyText;
+  public static final int NO_LIMIT = Integer.MAX_VALUE;
-  private Set<SelectedContact>        selectedContacts;
-  private OnContactSelectedListener   onContactSelectedListener;
-  private SwipeRefreshLayout          swipeRefresh;
-  private View                        showContactsLayout;
-  private Button                      showContactsButton;
-  private TextView                    showContactsDescription;
-  private ProgressWheel               showContactsProgress;
-  private String                      cursorFilter;
-  private RecyclerView                recyclerView;
-  private RecyclerViewFastScroller    fastScroller;
-  private ContactSelectionListAdapter cursorRecyclerViewAdapter;
 
+  public static final String DISPLAY_MODE      = "display_mode";
+  public static final String REFRESHABLE       = "refreshable";
+  public static final String RECENTS           = "recents";
+  public static final String SELECTION_LIMITS  = "selection_limits";
+  public static final String CURRENT_SELECTION = "current_selection";
+  public static final String HIDE_COUNT        = "hide_count";
+  public static final String CAN_SELECT_SELF   = "can_select_self";
+  public static final String DISPLAY_CHIPS     = "display_chips";
+  public static final String RV_PADDING_BOTTOM = "recycler_view_padding_bottom";
+  public static final String RV_CLIP           = "recycler_view_clipping";
+
+  private ConstraintLayout                            constraintLayout;
+  private TextView                                    emptyText;
+  private OnContactSelectedListener                   onContactSelectedListener;
+  private SwipeRefreshLayout                          swipeRefresh;
+  private View                                        showContactsLayout;
+  private Button                                      showContactsButton;
+  private TextView                                    showContactsDescription;
+  private ProgressWheel                               showContactsProgress;
+  private String                                      cursorFilter;
+  private RecyclerView                                recyclerView;
+  private RecyclerViewFastScroller                    fastScroller;
+  private ContactSelectionListAdapter                 cursorRecyclerViewAdapter;
+  private ChipGroup                                   chipGroup;
+  private HorizontalScrollView                        chipGroupScrollContainer;
+  private WarningTextView                             groupLimit;
+  private OnSelectionLimitReachedListener             onSelectionLimitReachedListener;
+  private AbstractContactsCursorLoaderFactoryProvider cursorFactoryProvider;
+
+
+  @Nullable private FixedViewsAdapter headerAdapter;
   @Nullable private FixedViewsAdapter footerAdapter;
-  @Nullable private InviteCallback    inviteCallback;
+  @Nullable private ListCallback      listCallback;
+  @Nullable private ScrollCallback    scrollCallback;
+            private GlideRequests     glideRequests;
+            private SelectionLimits   selectionLimit   = SelectionLimits.NO_LIMITS;
+            private Set<RecipientId>  currentSelection;
+            private boolean           isMulti;
+            private boolean           hideCount;
+            private boolean           canSelectSelf;
 
   @Override
   public void onAttach(@NonNull Context context) {
     super.onAttach(context);
 
-    if (context instanceof InviteCallback) {
+    if (context instanceof ListCallback) {
-      inviteCallback = (InviteCallback) context;
+      listCallback = (ListCallback) context;
+    }
+
+    if (getParentFragment() instanceof ScrollCallback) {
+      scrollCallback = (ScrollCallback) getParentFragment();
+    }
+
+    if (context instanceof ScrollCallback) {
+      scrollCallback = (ScrollCallback) context;
+    }
+
+    if (getParentFragment() instanceof OnContactSelectedListener) {
+      onContactSelectedListener = (OnContactSelectedListener) getParentFragment();
+    }
+
+    if (context instanceof OnContactSelectedListener) {
+      onContactSelectedListener = (OnContactSelectedListener) context;
+    }
+
+    if (context instanceof OnSelectionLimitReachedListener) {
+      onSelectionLimitReachedListener = (OnSelectionLimitReachedListener) context;
+    }
+
+    if (context instanceof AbstractContactsCursorLoaderFactoryProvider) {
+      cursorFactoryProvider = (AbstractContactsCursorLoaderFactoryProvider) context;
+    }
+
+    if (getParentFragment() instanceof AbstractContactsCursorLoaderFactoryProvider) {
+      cursorFactoryProvider = (AbstractContactsCursorLoaderFactoryProvider) context;
     }
   }
 
@@ -130,14 +202,16 @@ public final class ContactSelectionListFragment extends    Fragment
                  if (!TextSecurePreferences.hasSuccessfullyRetrievedDirectory(getActivity())) {
                    handleContactPermissionGranted();
                  } else {
-                   this.getLoaderManager().initLoader(0, null, this);
+                   LoaderManager.getInstance(this).initLoader(0, null, this);
                  }
                })
                .onAnyDenied(() -> {
-                 getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
+                 FragmentActivity activity = requireActivity();
 
-                 if (getActivity().getIntent().getBooleanExtra(RECENTS, false)) {
+                 activity.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
-                   getLoaderManager().initLoader(0, null, ContactSelectionListFragment.this);
+
+                 if (safeArguments().getBoolean(RECENTS, activity.getIntent().getBooleanExtra(RECENTS, false))) {
+                   LoaderManager.getInstance(this).initLoader(0, null, ContactSelectionListFragment.this);
                  } else {
                    initializeNoContactsPermission();
                  }
@@ -149,64 +223,157 @@ public final class ContactSelectionListFragment extends    Fragment
   public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
     View view = inflater.inflate(R.layout.contact_selection_list_fragment, container, false);
 
-    emptyText               = ViewUtil.findById(view, android.R.id.empty);
+    emptyText                = view.findViewById(android.R.id.empty);
-    recyclerView            = ViewUtil.findById(view, R.id.recycler_view);
+    recyclerView             = view.findViewById(R.id.recycler_view);
-    swipeRefresh            = ViewUtil.findById(view, R.id.swipe_refresh);
+    swipeRefresh             = view.findViewById(R.id.swipe_refresh);
-    fastScroller            = ViewUtil.findById(view, R.id.fast_scroller);
+    fastScroller             = view.findViewById(R.id.fast_scroller);
-    showContactsLayout      = view.findViewById(R.id.show_contacts_container);
+    showContactsLayout       = view.findViewById(R.id.show_contacts_container);
-    showContactsButton      = view.findViewById(R.id.show_contacts_button);
+    showContactsButton       = view.findViewById(R.id.show_contacts_button);
-    showContactsDescription = view.findViewById(R.id.show_contacts_description);
+    showContactsDescription  = view.findViewById(R.id.show_contacts_description);
-    showContactsProgress    = view.findViewById(R.id.progress);
+    showContactsProgress     = view.findViewById(R.id.progress);
-    recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
+    chipGroup                = view.findViewById(R.id.chipGroup);
+    chipGroupScrollContainer = view.findViewById(R.id.chipGroupScrollContainer);
+    groupLimit               = view.findViewById(R.id.group_limit);
+    constraintLayout         = view.findViewById(R.id.container);
 
-    swipeRefresh.setEnabled(getActivity().getIntent().getBooleanExtra(REFRESHABLE, true));
+    recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
+    recyclerView.setItemAnimator(new DefaultItemAnimator() {
+      @Override
+      public boolean canReuseUpdatedViewHolder(@NonNull RecyclerView.ViewHolder viewHolder) {
+        return true;
+      }
+    });
+
+    Intent intent    = requireActivity().getIntent();
+    Bundle arguments = safeArguments();
+
+    int     recyclerViewPadBottom = arguments.getInt(RV_PADDING_BOTTOM, intent.getIntExtra(RV_PADDING_BOTTOM, -1));
+    boolean recyclerViewClipping  = arguments.getBoolean(RV_CLIP, intent.getBooleanExtra(RV_CLIP, true));
+
+    if (recyclerViewPadBottom != -1) {
+      ViewUtil.setPaddingBottom(recyclerView, recyclerViewPadBottom);
+    }
+
+    recyclerView.setClipToPadding(recyclerViewClipping);
+
+    swipeRefresh.setEnabled(arguments.getBoolean(REFRESHABLE, intent.getBooleanExtra(REFRESHABLE, true)));
+
+    hideCount      = arguments.getBoolean(HIDE_COUNT, intent.getBooleanExtra(HIDE_COUNT, false));
+    selectionLimit = arguments.getParcelable(SELECTION_LIMITS);
+    if (selectionLimit == null) {
+      selectionLimit = intent.getParcelableExtra(SELECTION_LIMITS);
+    }
+    isMulti       = selectionLimit != null;
+    canSelectSelf = arguments.getBoolean(CAN_SELECT_SELF, intent.getBooleanExtra(CAN_SELECT_SELF, !isMulti));
+
+    if (!isMulti) {
+      selectionLimit = SelectionLimits.NO_LIMITS;
+    }
+
+    currentSelection = getCurrentSelection();
+
+    updateGroupLimit(getChipCount());
 
     return view;
   }
 
+  private @NonNull Bundle safeArguments() {
+    return getArguments() != null ? getArguments() : new Bundle();
+  }
+
+  private void updateGroupLimit(int chipCount) {
+    int members = currentSelection.size() + chipCount;
+    groupLimit.setText(getResources().getQuantityString(R.plurals.ContactSelectionListFragment_d_members, members, members));
+    groupLimit.setVisibility(isMulti && !hideCount ? View.VISIBLE : View.GONE);
+    groupLimit.setWarning(selectionWarningLimitExceeded());
+  }
+
   @Override
   public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
     Permissions.onRequestPermissionsResult(this, requestCode, permissions, grantResults);
   }
 
   public @NonNull List<SelectedContact> getSelectedContacts() {
-    List<SelectedContact> selected = new LinkedList<>();
+    if (cursorRecyclerViewAdapter == null) {
-    if (selectedContacts != null) {
+      return Collections.emptyList();
-      selected.addAll(selectedContacts);
     }
 
-    return selected;
+    return cursorRecyclerViewAdapter.getSelectedContacts();
   }
 
-  private boolean isMulti() {
+  public int getSelectedContactsCount() {
-    return getActivity().getIntent().getBooleanExtra(MULTI_SELECT, false);
+    if (cursorRecyclerViewAdapter == null) {
+      return 0;
+    }
+
+    return cursorRecyclerViewAdapter.getSelectedContactsCount();
+  }
+
+  private Set<RecipientId> getCurrentSelection() {
+    List<RecipientId> currentSelection = safeArguments().getParcelableArrayList(CURRENT_SELECTION);
+    if (currentSelection == null) {
+      currentSelection = requireActivity().getIntent().getParcelableArrayListExtra(CURRENT_SELECTION);
+    }
+
+    return currentSelection == null ? Collections.emptySet()
+                                    : Collections.unmodifiableSet(Stream.of(currentSelection).collect(Collectors.toSet()));
+  }
+
+  public boolean isMulti() {
+    return isMulti;
   }
 
   private void initializeCursor() {
+    glideRequests = GlideApp.with(this);
+
     cursorRecyclerViewAdapter = new ContactSelectionListAdapter(requireContext(),
-                                                                GlideApp.with(this),
+                                                                glideRequests,
                                                                 null,
                                                                 new ListClickListener(),
-                                                                isMulti());
+                                                                isMulti,
-    selectedContacts = cursorRecyclerViewAdapter.getSelectedContacts();
+                                                                currentSelection);
 
     RecyclerViewConcatenateAdapterStickyHeader concatenateAdapter = new RecyclerViewConcatenateAdapterStickyHeader();
 
+    if (listCallback != null) {
+      headerAdapter = new FixedViewsAdapter(createNewGroupItem(listCallback));
+      headerAdapter.hide();
+      concatenateAdapter.addAdapter(headerAdapter);
+    }
+
     concatenateAdapter.addAdapter(cursorRecyclerViewAdapter);
-    if (inviteCallback != null) {
+
-      footerAdapter = new FixedViewsAdapter(createInviteActionView(inviteCallback));
+    if (listCallback != null) {
+      footerAdapter = new FixedViewsAdapter(createInviteActionView(listCallback));
       footerAdapter.hide();
       concatenateAdapter.addAdapter(footerAdapter);
     }
 
     recyclerView.setAdapter(concatenateAdapter);
-    recyclerView.addItemDecoration(new StickyHeaderDecoration(concatenateAdapter, true, true));
+    recyclerView.addItemDecoration(new StickyHeaderDecoration(concatenateAdapter, true, true, 0));
+    recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+      @Override
+      public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
+        if (newState == RecyclerView.SCROLL_STATE_DRAGGING) {
+          if (scrollCallback != null) {
+            scrollCallback.onBeginScroll();
+          }
+        }
+      }
+    });
   }
 
-  private View createInviteActionView(@NonNull InviteCallback inviteCallback) {
+  private View createInviteActionView(@NonNull ListCallback listCallback) {
     View view = LayoutInflater.from(requireContext())
                               .inflate(R.layout.contact_selection_invite_action_item, (ViewGroup) requireView(), false);
-    view.setOnClickListener(v -> inviteCallback.onInvite());
+    view.setOnClickListener(v -> listCallback.onInvite());
+    return view;
+  }
+
+  private View createNewGroupItem(@NonNull ListCallback listCallback) {
+    View view = LayoutInflater.from(requireContext())
+                              .inflate(R.layout.contact_selection_new_group_item, (ViewGroup) requireView(), false);
+    view.setOnClickListener(v -> listCallback.onNewGroup(false));
     return view;
   }
 
@@ -242,23 +409,33 @@ public final class ContactSelectionListFragment extends    Fragment
     swipeRefresh.setRefreshing(false);
   }
 
+  public boolean hasQueryFilter() {
+    return !TextUtils.isEmpty(cursorFilter);
+  }
+
   public void setRefreshing(boolean refreshing) {
     swipeRefresh.setRefreshing(refreshing);
   }
 
   public void reset() {
-    selectedContacts.clear();
+    cursorRecyclerViewAdapter.clearSelectedContacts();
 
     if (!isDetached() && !isRemoving() && getActivity() != null && !getActivity().isFinishing()) {
-      getLoaderManager().restartLoader(0, null, this);
+      LoaderManager.getInstance(this).restartLoader(0, null, this);
     }
   }
 
   @Override
   public @NonNull Loader<Cursor> onCreateLoader(int id, Bundle args) {
-    return new ContactsCursorLoader(getActivity(),
+    FragmentActivity activity       = requireActivity();
-                                    getActivity().getIntent().getIntExtra(DISPLAY_MODE, DisplayMode.FLAG_ALL),
+    int              displayMode    = safeArguments().getInt(DISPLAY_MODE, activity.getIntent().getIntExtra(DISPLAY_MODE, DisplayMode.FLAG_ALL));
-                                    cursorFilter, getActivity().getIntent().getBooleanExtra(RECENTS, false));
+    boolean          displayRecents = safeArguments().getBoolean(RECENTS, activity.getIntent().getBooleanExtra(RECENTS, false));
+
+    if (cursorFactoryProvider != null) {
+      return cursorFactoryProvider.get().create();
+    } else {
+      return new ContactsCursorLoader.Factory(activity, displayMode, cursorFilter, displayRecents).create();
+    }
   }
 
   @Override
@@ -272,6 +449,14 @@ public final class ContactSelectionListFragment extends    Fragment
       footerAdapter.show();
     }
 
+    if (headerAdapter != null) {
+      if (TextUtils.isEmpty(cursorFilter)) {
+        headerAdapter.show();
+      } else {
+        headerAdapter.hide();
+      }
+    }
+
     emptyText.setText(R.string.contact_selection_group_activity__no_contacts);
     boolean useFastScroller = data != null && data.getCount() > 20;
     recyclerView.setVerticalScrollBarEnabled(!useFastScroller);
@@ -323,8 +508,11 @@ public final class ContactSelectionListFragment extends    Fragment
           swipeRefresh.setVisibility(View.VISIBLE);
           reset();
         } else {
-          Toast.makeText(getContext(), R.string.ContactSelectionListFragment_error_retrieving_contacts_check_your_network_connection, Toast.LENGTH_LONG).show();
+          Context context = getContext();
-          initializeNoContactsPermission();
+          if (context != null) {
+            Toast.makeText(getContext(), R.string.ContactSelectionListFragment_error_retrieving_contacts_check_your_network_connection, Toast.LENGTH_LONG).show();
+            initializeNoContactsPermission();
+          }
         }
       }
     }.execute();
@@ -336,7 +524,21 @@ public final class ContactSelectionListFragment extends    Fragment
       SelectedContact selectedContact = contact.isUsernameType() ? SelectedContact.forUsername(contact.getRecipientId().orNull(), contact.getNumber())
                                                                  : SelectedContact.forPhone(contact.getRecipientId().orNull(), contact.getNumber());
 
-      if (!isMulti() || !selectedContacts.contains(selectedContact)) {
+      if (!canSelectSelf && Recipient.self().getId().equals(selectedContact.getOrCreateRecipientId(requireContext()))) {
+        Toast.makeText(requireContext(), R.string.ContactSelectionListFragment_you_do_not_need_to_add_yourself_to_the_group, Toast.LENGTH_SHORT).show();
+        return;
+      }
+
+      if (!isMulti || !cursorRecyclerViewAdapter.isSelectedContact(selectedContact)) {
+        if (selectionHardLimitReached()) {
+          if (onSelectionLimitReachedListener != null) {
+            onSelectionLimitReachedListener.onHardLimitReached(selectionLimit.getHardLimit());
+          } else {
+            GroupLimitDialog.showHardLimitMessage(requireContext());
+          }
+          return;
+        }
+
         if (contact.isUsernameType()) {
           AlertDialog loadingDialog = SimpleProgressDialog.show(requireContext());
 
@@ -346,31 +548,39 @@ public final class ContactSelectionListFragment extends    Fragment
             loadingDialog.dismiss();
             if (uuid.isPresent()) {
               Recipient recipient = Recipient.externalUsername(requireContext(), uuid.get(), contact.getNumber());
-              selectedContacts.add(SelectedContact.forUsername(recipient.getId(), contact.getNumber()));
+              SelectedContact selected = SelectedContact.forUsername(recipient.getId(), contact.getNumber());
-              contact.setChecked(true);
 
               if (onContactSelectedListener != null) {
-                onContactSelectedListener.onContactSelected(Optional.of(recipient.getId()), null);
+                if (onContactSelectedListener.onBeforeContactSelected(Optional.of(recipient.getId()), null)) {
+                  markContactSelected(selected);
+                  cursorRecyclerViewAdapter.notifyItemRangeChanged(0, cursorRecyclerViewAdapter.getItemCount(), ContactSelectionListAdapter.PAYLOAD_SELECTION_CHANGE);
+                }
+              } else {
+                markContactSelected(selected);
+                cursorRecyclerViewAdapter.notifyItemRangeChanged(0, cursorRecyclerViewAdapter.getItemCount(), ContactSelectionListAdapter.PAYLOAD_SELECTION_CHANGE);
               }
             } else {
               new AlertDialog.Builder(requireContext())
                              .setTitle(R.string.ContactSelectionListFragment_username_not_found)
                              .setMessage(getString(R.string.ContactSelectionListFragment_s_is_not_a_signal_user, contact.getNumber()))
-                             .setPositiveButton(R.string.ContactSelectionListFragment_okay, (dialog, which) -> dialog.dismiss())
+                             .setPositiveButton(android.R.string.ok, (dialog, which) -> dialog.dismiss())
                              .show();
             }
           });
         } else {
-          selectedContacts.add(selectedContact);
-          contact.setChecked(true);
-
           if (onContactSelectedListener != null) {
-            onContactSelectedListener.onContactSelected(contact.getRecipientId(), contact.getNumber());
+            if (onContactSelectedListener.onBeforeContactSelected(contact.getRecipientId(), contact.getNumber())) {
+              markContactSelected(selectedContact);
+              cursorRecyclerViewAdapter.notifyItemRangeChanged(0, cursorRecyclerViewAdapter.getItemCount(), ContactSelectionListAdapter.PAYLOAD_SELECTION_CHANGE);
+            }
+          } else {
+            markContactSelected(selectedContact);
+            cursorRecyclerViewAdapter.notifyItemRangeChanged(0, cursorRecyclerViewAdapter.getItemCount(), ContactSelectionListAdapter.PAYLOAD_SELECTION_CHANGE);
           }
         }
       } else {
-        selectedContacts.remove(selectedContact);
+        markContactUnselected(selectedContact);
-        contact.setChecked(false);
+        cursorRecyclerViewAdapter.notifyItemRangeChanged(0, cursorRecyclerViewAdapter.getItemCount(), ContactSelectionListAdapter.PAYLOAD_SELECTION_CHANGE);
 
         if (onContactSelectedListener != null) {
           onContactSelectedListener.onContactDeselected(contact.getRecipientId(), contact.getNumber());
@@ -379,20 +589,160 @@ public final class ContactSelectionListFragment extends    Fragment
     }
   }
 
-  public void setOnContactSelectedListener(OnContactSelectedListener onContactSelectedListener) {
+  private boolean selectionHardLimitReached() {
-    this.onContactSelectedListener = onContactSelectedListener;
+    return getChipCount() + currentSelection.size() >= selectionLimit.getHardLimit();
+  }
+
+  private boolean selectionWarningLimitReachedExactly() {
+    return getChipCount() + currentSelection.size() == selectionLimit.getRecommendedLimit();
+  }
+
+  private boolean selectionWarningLimitExceeded() {
+    return getChipCount() + currentSelection.size() > selectionLimit.getRecommendedLimit();
+  }
+
+  private void markContactSelected(@NonNull SelectedContact selectedContact) {
+    cursorRecyclerViewAdapter.addSelectedContact(selectedContact);
+    if (isMulti) {
+      addChipForSelectedContact(selectedContact);
+    }
+  }
+
+  private void markContactUnselected(@NonNull SelectedContact selectedContact) {
+    cursorRecyclerViewAdapter.removeFromSelectedContacts(selectedContact);
+    cursorRecyclerViewAdapter.notifyItemRangeChanged(0, cursorRecyclerViewAdapter.getItemCount(), ContactSelectionListAdapter.PAYLOAD_SELECTION_CHANGE);
+    removeChipForContact(selectedContact);
+  }
+
+  private void removeChipForContact(@NonNull SelectedContact contact) {
+    for (int i = chipGroup.getChildCount() - 1; i >= 0; i--) {
+      View v = chipGroup.getChildAt(i);
+      if (v instanceof ContactChip && contact.matches(((ContactChip) v).getContact())) {
+        chipGroup.removeView(v);
+      }
+    }
+
+    updateGroupLimit(getChipCount());
+
+    if (getChipCount() == 0) {
+      setChipGroupVisibility(ConstraintSet.GONE);
+    }
+  }
+
+  private void addChipForSelectedContact(@NonNull SelectedContact selectedContact) {
+    SimpleTask.run(getViewLifecycleOwner().getLifecycle(),
+                   ()       -> Recipient.resolved(selectedContact.getOrCreateRecipientId(requireContext())),
+                   resolved -> addChipForRecipient(resolved, selectedContact));
+  }
+
+  private void addChipForRecipient(@NonNull Recipient recipient, @NonNull SelectedContact selectedContact) {
+    final ContactChip chip = new ContactChip(requireContext());
+
+    if (getChipCount() == 0) {
+      setChipGroupVisibility(ConstraintSet.VISIBLE);
+    }
+
+    chip.setText(recipient.getShortDisplayName(requireContext()));
+    chip.setContact(selectedContact);
+    chip.setCloseIconVisible(true);
+    chip.setOnCloseIconClickListener(view -> {
+      markContactUnselected(selectedContact);
+
+      if (onContactSelectedListener != null) {
+        onContactSelectedListener.onContactDeselected(Optional.of(recipient.getId()), recipient.getE164().orNull());
+      }
+    });
+
+    chipGroup.getLayoutTransition().addTransitionListener(new LayoutTransition.TransitionListener() {
+      @Override
+      public void startTransition(LayoutTransition transition, ViewGroup container, View view, int transitionType) {
+      }
+
+      @Override
+      public void endTransition(LayoutTransition transition, ViewGroup container, View view, int transitionType) {
+        if (view == chip && transitionType == LayoutTransition.APPEARING) {
+          chipGroup.getLayoutTransition().removeTransitionListener(this);
+          registerChipRecipientObserver(chip, recipient.live());
+          chipGroup.post(ContactSelectionListFragment.this::smoothScrollChipsToEnd);
+        }
+      }
+    });
+
+    chip.setAvatar(glideRequests, recipient, () -> addChip(chip));
+  }
+
+  private void addChip(@NonNull ContactChip chip) {
+    chipGroup.addView(chip);
+    updateGroupLimit(getChipCount());
+    if (selectionWarningLimitReachedExactly()) {
+      if (onSelectionLimitReachedListener != null) {
+        onSelectionLimitReachedListener.onSuggestedLimitReached(selectionLimit.getRecommendedLimit());
+      } else {
+        GroupLimitDialog.showRecommendedLimitMessage(requireContext());
+      }
+    }
+  }
+
+  private int getChipCount() {
+    int count = chipGroup.getChildCount() - CHIP_GROUP_EMPTY_CHILD_COUNT;
+    if (count < 0) throw new AssertionError();
+    return count;
+  }
+
+  private void registerChipRecipientObserver(@NonNull ContactChip chip, @Nullable LiveRecipient recipient) {
+    if (recipient != null) {
+      recipient.observe(getViewLifecycleOwner(), resolved -> {
+        if (chip.isAttachedToWindow()) {
+          chip.setAvatar(glideRequests, resolved, null);
+          chip.setText(resolved.getShortDisplayName(chip.getContext()));
+        }
+      });
+    }
+  }
+
+  private void setChipGroupVisibility(int visibility) {
+    if (!safeArguments().getBoolean(DISPLAY_CHIPS, requireActivity().getIntent().getBooleanExtra(DISPLAY_CHIPS, true))) {
+      return;
+    }
+
+    TransitionManager.beginDelayedTransition(constraintLayout, new AutoTransition().setDuration(CHIP_GROUP_REVEAL_DURATION_MS));
+
+    ConstraintSet constraintSet = new ConstraintSet();
+    constraintSet.clone(constraintLayout);
+    constraintSet.setVisibility(R.id.chipGroupScrollContainer, visibility);
+    constraintSet.applyTo(constraintLayout);
   }
 
   public void setOnRefreshListener(SwipeRefreshLayout.OnRefreshListener onRefreshListener) {
     this.swipeRefresh.setOnRefreshListener(onRefreshListener);
   }
 
+  private void smoothScrollChipsToEnd() {
+    int x = ViewUtil.isLtr(chipGroupScrollContainer) ? chipGroup.getWidth() : 0;
+    chipGroupScrollContainer.smoothScrollTo(x, 0);
+  }
+
   public interface OnContactSelectedListener {
-    void onContactSelected(Optional<RecipientId> recipientId, String number);
+    /** @return True if the contact is allowed to be selected, otherwise false. */
+    boolean onBeforeContactSelected(Optional<RecipientId> recipientId, String number);
     void onContactDeselected(Optional<RecipientId> recipientId, String number);
   }
 
-  public interface InviteCallback {
+  public interface OnSelectionLimitReachedListener {
+    void onSuggestedLimitReached(int limit);
+    void onHardLimitReached(int limit);
+  }
+
+  public interface ListCallback {
     void onInvite();
+    void onNewGroup(boolean forceV1);
+  }
+
+  public interface ScrollCallback {
+    void onBeginScroll();
+  }
+
+  public interface AbstractContactsCursorLoaderFactoryProvider {
+    @NonNull AbstractContactsCursorLoader.Factory get();
   }
 }

app/src/main/java/org/thoughtcrime/securesms/CountrySelectionFragment.java

@@ -1,101 +0,0 @@
-package org.thoughtcrime.securesms;
-
-import android.app.Activity;
-import android.os.Bundle;
-import androidx.annotation.NonNull;
-import androidx.fragment.app.ListFragment;
-import androidx.loader.app.LoaderManager;
-import androidx.loader.content.Loader;
-import android.text.Editable;
-import android.text.TextWatcher;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.EditText;
-import android.widget.ListView;
-import android.widget.SimpleAdapter;
-
-
-import org.thoughtcrime.securesms.database.loaders.CountryListLoader;
-
-import java.util.ArrayList;
-import java.util.Map;
-
-public class CountrySelectionFragment extends ListFragment implements LoaderManager.LoaderCallbacks<ArrayList<Map<String, String>>> {
-
-  private EditText countryFilter;
-  private CountrySelectedListener listener;
-
-  @Override
-  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) {
-    return inflater.inflate(R.layout.country_selection_fragment, container, false);
-  }
-
-  @Override
-  public void onActivityCreated(Bundle bundle) {
-    super.onActivityCreated(bundle);
-    this.countryFilter = (EditText)getView().findViewById(R.id.country_search);
-    this.countryFilter.addTextChangedListener(new FilterWatcher());
-    getLoaderManager().initLoader(0, null, this).forceLoad();
-  }
-
-  @Override
-  public void onAttach(Activity activity) {
-    super.onAttach(activity);
-    this.listener = (CountrySelectedListener)activity;
-  }
-
-  @Override
-  public void onListItemClick(ListView listView, View view, int position, long id) {
-    Map<String, String> item = (Map<String, String>)this.getListAdapter().getItem(position);
-    if (this.listener != null) {
-      this.listener.countrySelected(item.get("country_name"),
-                                    Integer.parseInt(item.get("country_code").substring(1)));
-    }
-  }
-
-  @Override
-  public @NonNull Loader<ArrayList<Map<String, String>>> onCreateLoader(int arg0, Bundle arg1) {
-    return new CountryListLoader(getActivity());
-  }
-
-  @Override
-  public void onLoadFinished(@NonNull Loader<ArrayList<Map<String, String>>> loader,
-                             ArrayList<Map<String, String>> results)
-  {
-    String[] from = {"country_name", "country_code"};
-    int[] to      = {R.id.country_name, R.id.country_code};
-    this.setListAdapter(new SimpleAdapter(getActivity(), results, R.layout.country_list_item, from, to));
-
-    if (this.countryFilter != null && this.countryFilter.getText().length() != 0) {
-      ((SimpleAdapter)getListAdapter()).getFilter().filter(this.countryFilter.getText().toString());
-    }
-  }
-
-  @Override
-  public void onLoaderReset(@NonNull Loader<ArrayList<Map<String, String>>> arg0) {
-    this.setListAdapter(null);
-  }
-
-  public interface CountrySelectedListener {
-    public void countrySelected(String countryName, int countryCode);
-  }
-
-  private class FilterWatcher implements TextWatcher {
-
-    @Override
-    public void afterTextChanged(Editable s) {
-      if (getListAdapter() != null) {
-        ((SimpleAdapter)getListAdapter()).getFilter().filter(s.toString());
-      }
-    }
-
-    @Override
-    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
-    }
-
-    @Override
-    public void onTextChanged(CharSequence s, int start, int before, int count) {
-    }
-  }
-}

app/src/main/java/org/thoughtcrime/securesms/DatabaseMigrationActivity.java

@@ -9,6 +9,7 @@ import android.content.ServiceConnection;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.IBinder;
+import android.os.Looper;
 import android.os.Message;
 import android.os.Parcelable;
 import android.view.View;
@@ -21,7 +22,7 @@ import org.thoughtcrime.securesms.database.SmsMigrator.ProgressDescription;
 import org.thoughtcrime.securesms.service.ApplicationMigrationService;
 import org.thoughtcrime.securesms.service.ApplicationMigrationService.ImportState;
 
-public class DatabaseMigrationActivity extends PassphraseRequiredActionBarActivity {
+public class DatabaseMigrationActivity extends PassphraseRequiredActivity {
 
   private final ImportServiceConnection serviceConnection  = new ImportServiceConnection();
   private final ImportStateHandler      importStateHandler = new ImportStateHandler();
@@ -150,7 +151,7 @@ public class DatabaseMigrationActivity extends PassphraseRequiredActionBarActivi
         startActivity((Intent)getIntent().getParcelableExtra("next_intent"));
       } else {
         // TODO [greyson] Navigation
-        startActivity(new Intent(this, MainActivity.class));
+        startActivity(MainActivity.clearTop(this));
       }
     }
 
@@ -158,6 +159,11 @@ public class DatabaseMigrationActivity extends PassphraseRequiredActionBarActivi
   }
 
   private class ImportStateHandler extends Handler {
+
+    public ImportStateHandler() {
+      super(Looper.getMainLooper());
+    }
+
     @Override
     public void handleMessage(Message message) {
       switch (message.what) {

app/src/main/java/org/thoughtcrime/securesms/DeviceActivity.java

@@ -16,20 +16,21 @@ import android.widget.Button;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
+import androidx.appcompat.widget.Toolbar;
 import androidx.core.content.ContextCompat;
 
+import org.signal.core.util.ThreadUtil;
+import org.signal.core.util.logging.Log;
 import org.thoughtcrime.securesms.crypto.IdentityKeyUtil;
 import org.thoughtcrime.securesms.crypto.ProfileKeyUtil;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
-import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.permissions.Permissions;
-import org.thoughtcrime.securesms.push.AccountManagerFactory;
 import org.thoughtcrime.securesms.qr.ScanListener;
 import org.thoughtcrime.securesms.util.Base64;
 import org.thoughtcrime.securesms.util.DynamicLanguage;
+import org.thoughtcrime.securesms.util.DynamicNoActionBarTheme;
 import org.thoughtcrime.securesms.util.DynamicTheme;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
-import org.thoughtcrime.securesms.util.Util;
 import org.thoughtcrime.securesms.util.task.ProgressDialogAsyncTask;
 import org.whispersystems.libsignal.IdentityKeyPair;
 import org.whispersystems.libsignal.InvalidKeyException;
@@ -42,13 +43,13 @@ import org.whispersystems.signalservice.internal.push.DeviceLimitExceededExcepti
 
 import java.io.IOException;
 
-public class DeviceActivity extends PassphraseRequiredActionBarActivity
+public class DeviceActivity extends PassphraseRequiredActivity
     implements Button.OnClickListener, ScanListener, DeviceLinkFragment.LinkClickedListener
 {
 
-  private static final String TAG = DeviceActivity.class.getSimpleName();
+  private static final String TAG = Log.tag(DeviceActivity.class);
 
-  private final DynamicTheme    dynamicTheme    = new DynamicTheme();
+  private final DynamicTheme    dynamicTheme    = new DynamicNoActionBarTheme();
   private final DynamicLanguage dynamicLanguage = new DynamicLanguage();
 
   private DeviceAddFragment  deviceAddFragment;
@@ -63,9 +64,14 @@ public class DeviceActivity extends PassphraseRequiredActionBarActivity
 
   @Override
   public void onCreate(Bundle bundle, boolean ready) {
-    getSupportActionBar().setHomeAsUpIndicator(ContextCompat.getDrawable(this, R.drawable.ic_arrow_left_24));
+    setContentView(R.layout.device_activity);
-    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+
-    getSupportActionBar().setTitle(R.string.AndroidManifest__linked_devices);
+    Toolbar toolbar = findViewById(R.id.toolbar);
+
+    setSupportActionBar(toolbar);
+    requireSupportActionBar().setDisplayHomeAsUpEnabled(true);
+    requireSupportActionBar().setTitle(R.string.AndroidManifest__linked_devices);
+
     this.deviceAddFragment  = new DeviceAddFragment();
     this.deviceListFragment = new DeviceListFragment();
     this.deviceLinkFragment = new DeviceLinkFragment();
@@ -74,20 +80,10 @@ public class DeviceActivity extends PassphraseRequiredActionBarActivity
     this.deviceAddFragment.setScanListener(this);
 
     if (getIntent().getBooleanExtra("add", false)) {
-      initFragment(android.R.id.content, deviceAddFragment, dynamicLanguage.getCurrentLocale());
+      initFragment(R.id.fragment_container, deviceAddFragment, dynamicLanguage.getCurrentLocale());
     } else {
-      initFragment(android.R.id.content, deviceListFragment, dynamicLanguage.getCurrentLocale());
+      initFragment(R.id.fragment_container, deviceListFragment, dynamicLanguage.getCurrentLocale());
     }
-
-    overridePendingTransition(R.anim.slide_from_end, R.anim.slide_to_start);
-  }
-
-  @Override
-  protected void onPause() {
-    if (isFinishing()) {
-      overridePendingTransition(R.anim.slide_from_start, R.anim.slide_to_end);
-    }
-    super.onPause();
   }
 
   @Override
@@ -99,8 +95,9 @@ public class DeviceActivity extends PassphraseRequiredActionBarActivity
 
   @Override
   public boolean onOptionsItemSelected(MenuItem item) {
-    switch (item.getItemId()) {
+    if (item.getItemId() == android.R.id.home) {
-      case android.R.id.home: finish(); return true;
+      finish();
+      return true;
     }
 
     return false;
@@ -114,7 +111,7 @@ public class DeviceActivity extends PassphraseRequiredActionBarActivity
                .withPermanentDenialDialog(getString(R.string.DeviceActivity_signal_needs_the_camera_permission_in_order_to_scan_a_qr_code))
                .onAllGranted(() -> {
                  getSupportFragmentManager().beginTransaction()
-                                            .replace(android.R.id.content, deviceAddFragment)
+                                            .replace(R.id.fragment_container, deviceAddFragment)
                                             .addToBackStack(null)
                                             .commitAllowingStateLoss();
                })
@@ -124,12 +121,12 @@ public class DeviceActivity extends PassphraseRequiredActionBarActivity
 
   @Override
   public void onQrDataFound(final String data) {
-    Util.runOnMain(() -> {
+    ThreadUtil.runOnMain(() -> {
       ((Vibrator)getSystemService(Context.VIBRATOR_SERVICE)).vibrate(50);
       Uri uri = Uri.parse(data);
       deviceLinkFragment.setLinkClickedListener(uri, DeviceActivity.this);
 
-      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+      if (Build.VERSION.SDK_INT >= 21) {
         deviceAddFragment.setSharedElementReturnTransition(TransitionInflater.from(DeviceActivity.this).inflateTransition(R.transition.fragment_shared));
         deviceAddFragment.setExitTransition(TransitionInflater.from(DeviceActivity.this).inflateTransition(android.R.transition.fade));
 
@@ -139,14 +136,14 @@ public class DeviceActivity extends PassphraseRequiredActionBarActivity
         getSupportFragmentManager().beginTransaction()
                                    .addToBackStack(null)
                                    .addSharedElement(deviceAddFragment.getDevicesImage(), "devices")
-                                   .replace(android.R.id.content, deviceLinkFragment)
+                                   .replace(R.id.fragment_container, deviceLinkFragment)
                                    .commit();
 
       } else {
         getSupportFragmentManager().beginTransaction()
                                    .setCustomAnimations(R.anim.slide_from_bottom, R.anim.slide_to_bottom,
                                                         R.anim.slide_from_bottom, R.anim.slide_to_bottom)
-                                   .replace(android.R.id.content, deviceLinkFragment)
+                                   .replace(R.id.fragment_container, deviceLinkFragment)
                                    .addToBackStack(null)
                                    .commit();
       }

app/src/main/java/org/thoughtcrime/securesms/DeviceAddFragment.java

@@ -5,8 +5,6 @@ import android.annotation.TargetApi;
 import android.content.res.Configuration;
 import android.os.Build;
 import android.os.Bundle;
-import androidx.annotation.NonNull;
-import androidx.fragment.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewAnimationUtils;
@@ -15,12 +13,14 @@ import android.view.animation.DecelerateInterpolator;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 
+import androidx.annotation.NonNull;
+
 import org.thoughtcrime.securesms.components.camera.CameraView;
 import org.thoughtcrime.securesms.qr.ScanListener;
 import org.thoughtcrime.securesms.qr.ScanningThread;
 import org.thoughtcrime.securesms.util.ViewUtil;
 
-public class DeviceAddFragment extends Fragment {
+public class DeviceAddFragment extends LoggingFragment {
 
   private ViewGroup      container;
   private LinearLayout   overlay;
@@ -32,9 +32,9 @@ public class DeviceAddFragment extends Fragment {
   @Override
   public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup viewGroup, Bundle bundle) {
     this.container    = ViewUtil.inflate(inflater, viewGroup, R.layout.device_add_fragment);
-    this.overlay      = ViewUtil.findById(this.container, R.id.overlay);
+    this.overlay      = this.container.findViewById(R.id.overlay);
-    this.scannerView  = ViewUtil.findById(this.container, R.id.scanner);
+    this.scannerView  = this.container.findViewById(R.id.scanner);
-    this.devicesImage = ViewUtil.findById(this.container, R.id.devices);
+    this.devicesImage = this.container.findViewById(R.id.devices);
 
     if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
       this.overlay.setOrientation(LinearLayout.HORIZONTAL);
@@ -42,9 +42,9 @@ public class DeviceAddFragment extends Fragment {
       this.overlay.setOrientation(LinearLayout.VERTICAL);
     }
 
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+    if (Build.VERSION.SDK_INT >= 21) {
       this.container.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
-        @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+        @TargetApi(21)
         @Override
         public void onLayoutChange(View v, int left, int top, int right, int bottom,
                                    int oldLeft, int oldTop, int oldRight, int oldBottom)
@@ -80,7 +80,7 @@ public class DeviceAddFragment extends Fragment {
   }
 
   @Override
-  public void onConfigurationChanged(Configuration newConfiguration) {
+  public void onConfigurationChanged(@NonNull Configuration newConfiguration) {
     super.onConfigurationChanged(newConfiguration);
 
     this.scannerView.onPause();
@@ -107,6 +107,4 @@ public class DeviceAddFragment extends Fragment {
       this.scanningThread.setScanListener(scanListener);
     }
   }
-
-
 }

app/src/main/java/org/thoughtcrime/securesms/DeviceLinkFragment.java

@@ -3,13 +3,14 @@ package org.thoughtcrime.securesms;
 import android.content.res.Configuration;
 import android.net.Uri;
 import android.os.Bundle;
-import androidx.annotation.NonNull;
-import androidx.fragment.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.LinearLayout;
 
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+
 public class DeviceLinkFragment extends Fragment implements View.OnClickListener {
 
   private LinearLayout        container;
@@ -31,7 +32,7 @@ public class DeviceLinkFragment extends Fragment implements View.OnClickListener
   }
 
   @Override
-  public void onConfigurationChanged(Configuration newConfiguration) {
+  public void onConfigurationChanged(@NonNull Configuration newConfiguration) {
     super.onConfigurationChanged(newConfiguration);
     if (newConfiguration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
       container.setOrientation(LinearLayout.HORIZONTAL);

app/src/main/java/org/thoughtcrime/securesms/DeviceListFragment.java

@@ -6,15 +6,6 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.os.AsyncTask;
 import android.os.Bundle;
-import androidx.annotation.NonNull;
-import androidx.fragment.app.ListFragment;
-import androidx.loader.app.LoaderManager;
-import androidx.loader.content.Loader;
-import androidx.appcompat.app.AlertDialog;
-
-import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
-import org.thoughtcrime.securesms.devicelist.Device;
-import org.thoughtcrime.securesms.logging.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -24,12 +15,21 @@ import android.widget.Button;
 import android.widget.ListView;
 import android.widget.Toast;
 
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AlertDialog;
+import androidx.fragment.app.ListFragment;
+import androidx.loader.app.LoaderManager;
+import androidx.loader.content.Loader;
+
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 import com.melnykov.fab.FloatingActionButton;
 
+import org.signal.core.util.logging.Log;
 import org.thoughtcrime.securesms.database.loaders.DeviceListLoader;
-import org.thoughtcrime.securesms.util.task.ProgressDialogAsyncTask;
+import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
+import org.thoughtcrime.securesms.devicelist.Device;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
-import org.thoughtcrime.securesms.util.ViewUtil;
+import org.thoughtcrime.securesms.util.task.ProgressDialogAsyncTask;
 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
 
 import java.io.IOException;
@@ -41,7 +41,7 @@ public class DeviceListFragment extends ListFragment
                ListView.OnItemClickListener, Button.OnClickListener
 {
 
-  private static final String TAG = DeviceListFragment.class.getSimpleName();
+  private static final String TAG = Log.tag(DeviceListFragment.class);
 
   private SignalServiceAccountManager accountManager;
   private Locale                      locale;
@@ -53,12 +53,12 @@ public class DeviceListFragment extends ListFragment
   @Override
   public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
-    this.locale = (Locale) getArguments().getSerializable(PassphraseRequiredActionBarActivity.LOCALE_EXTRA);
+    this.locale = (Locale) requireArguments().getSerializable(PassphraseRequiredActivity.LOCALE_EXTRA);
   }
 
   @Override
-  public void onAttach(Activity activity) {
+  public void onAttach(@NonNull Context context) {
-    super.onAttach(activity);
+    super.onAttach(context);
     this.accountManager = ApplicationDependencies.getSignalServiceAccountManager();
   }
 
@@ -68,7 +68,7 @@ public class DeviceListFragment extends ListFragment
 
     this.empty             = view.findViewById(R.id.empty);
     this.progressContainer = view.findViewById(R.id.progress_container);
-    this.addDeviceButton   = ViewUtil.findById(view, R.id.add_device);
+    this.addDeviceButton   = view.findViewById(R.id.add_device);
     this.addDeviceButton.setOnClickListener(this);
 
     return view;
@@ -122,67 +122,51 @@ public class DeviceListFragment extends ListFragment
     final String deviceName = ((DeviceListItem)view).getDeviceName();
     final long   deviceId   = ((DeviceListItem)view).getDeviceId();
 
-    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+    AlertDialog.Builder builder = new MaterialAlertDialogBuilder(requireActivity());
-    builder.setTitle(getActivity().getString(R.string.DeviceListActivity_unlink_s, deviceName));
+    builder.setTitle(getString(R.string.DeviceListActivity_unlink_s, deviceName));
     builder.setMessage(R.string.DeviceListActivity_by_unlinking_this_device_it_will_no_longer_be_able_to_send_or_receive);
     builder.setNegativeButton(android.R.string.cancel, null);
-    builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
+    builder.setPositiveButton(android.R.string.ok, (dialog, which) -> handleDisconnectDevice(deviceId));
-      @Override
-      public void onClick(DialogInterface dialog, int which) {
-        handleDisconnectDevice(deviceId);
-      }
-    });
     builder.show();
   }
 
   private void handleLoaderFailed() {
-    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+    AlertDialog.Builder builder = new MaterialAlertDialogBuilder(requireActivity());
     builder.setMessage(R.string.DeviceListActivity_network_connection_failed);
     builder.setPositiveButton(R.string.DeviceListActivity_try_again,
-                              new DialogInterface.OnClickListener() {
+        (dialog, which) -> getLoaderManager().restartLoader(0, null, DeviceListFragment.this));
-      @Override
-      public void onClick(DialogInterface dialog, int which) {
-        getLoaderManager().restartLoader(0, null, DeviceListFragment.this);
-      }
-    });
 
-    builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
+    builder.setNegativeButton(android.R.string.cancel, (dialog, which) -> requireActivity().onBackPressed());
-      @Override
+    builder.setOnCancelListener(dialog -> requireActivity().onBackPressed());
-      public void onClick(DialogInterface dialog, int which) {
-        DeviceListFragment.this.getActivity().onBackPressed();
-      }
-    });
-    builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
-      @Override
-      public void onCancel(DialogInterface dialog) {
-        DeviceListFragment.this.getActivity().onBackPressed();
-      }
-    });
 
     builder.show();
   }
 
   @SuppressLint("StaticFieldLeak")
   private void handleDisconnectDevice(final long deviceId) {
-    new ProgressDialogAsyncTask<Void, Void, Void>(getActivity(),
+    new ProgressDialogAsyncTask<Void, Void, Boolean>(getActivity(),
-                                                  R.string.DeviceListActivity_unlinking_device_no_ellipsis,
+                                                     R.string.DeviceListActivity_unlinking_device_no_ellipsis,
-                                                  R.string.DeviceListActivity_unlinking_device)
+                                                     R.string.DeviceListActivity_unlinking_device)
     {
       @Override
-      protected Void doInBackground(Void... params) {
+      protected Boolean doInBackground(Void... params) {
         try {
           accountManager.removeDevice(deviceId);
+          return true;
         } catch (IOException e) {
           Log.w(TAG, e);
-          Toast.makeText(getActivity(), R.string.DeviceListActivity_network_failed, Toast.LENGTH_LONG).show();
+          return false;
         }
-        return null;
       }
 
       @Override
-      protected void onPostExecute(Void result) {
+      protected void onPostExecute(Boolean result) {
         super.onPostExecute(result);
-        getLoaderManager().restartLoader(0, null, DeviceListFragment.this);
+        if (result) {
+          getLoaderManager().restartLoader(0, null, DeviceListFragment.this);
+        } else {
+          Toast.makeText(getActivity(), R.string.DeviceListActivity_network_failed, Toast.LENGTH_LONG).show();
+        }
       }
     }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
   }

app/src/main/java/org/thoughtcrime/securesms/DeviceProvisioningActivity.java

@@ -2,13 +2,16 @@ package org.thoughtcrime.securesms;
 
 import android.content.Intent;
 import android.os.Bundle;
-import androidx.appcompat.app.AlertDialog;
 import android.view.Window;
 
-public class DeviceProvisioningActivity extends PassphraseRequiredActionBarActivity {
+import androidx.appcompat.app.AlertDialog;
+
+import org.signal.core.util.logging.Log;
+
+public class DeviceProvisioningActivity extends PassphraseRequiredActivity {
 
   @SuppressWarnings("unused")
-  private static final String TAG = DeviceProvisioningActivity.class.getSimpleName();
+  private static final String TAG = Log.tag(DeviceProvisioningActivity.class);
 
   @Override
   protected void onPreCreate() {
@@ -17,9 +20,6 @@ public class DeviceProvisioningActivity extends PassphraseRequiredActionBarActiv
 
   @Override
   protected void onCreate(Bundle bundle, boolean ready) {
-    assert  getSupportActionBar() != null;
-    getSupportActionBar().hide();
-
     AlertDialog dialog = new AlertDialog.Builder(this)
         .setTitle(getString(R.string.DeviceProvisioningActivity_link_a_signal_device))
         .setMessage(getString(R.string.DeviceProvisioningActivity_it_looks_like_youre_trying_to_link_a_signal_device_using_a_3rd_party_scanner))
@@ -29,7 +29,7 @@ public class DeviceProvisioningActivity extends PassphraseRequiredActionBarActiv
           startActivity(intent);
           finish();
         })
-        .setNegativeButton(R.string.DeviceProvisioningActivity_cancel, (dialog12, which) -> {
+        .setNegativeButton(android.R.string.cancel, (dialog12, which) -> {
           dialog12.dismiss();
           finish();
         })

app/src/main/java/org/thoughtcrime/securesms/ExpirationDialog.java

@@ -1,87 +0,0 @@
-package org.thoughtcrime.securesms;
-
-import android.content.Context;
-import androidx.annotation.NonNull;
-import androidx.appcompat.app.AlertDialog;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.widget.TextView;
-
-import org.thoughtcrime.securesms.util.ExpirationUtil;
-
-import cn.carbswang.android.numberpickerview.library.NumberPickerView;
-
-public class ExpirationDialog extends AlertDialog {
-
-  protected ExpirationDialog(Context context) {
-    super(context);
-  }
-
-  protected ExpirationDialog(Context context, int theme) {
-    super(context, theme);
-  }
-
-  protected ExpirationDialog(Context context, boolean cancelable, OnCancelListener cancelListener) {
-    super(context, cancelable, cancelListener);
-  }
-
-  public static void show(final Context context,
-                          final int currentExpiration,
-                          final @NonNull OnClickListener listener)
-  {
-    final View view = createNumberPickerView(context, currentExpiration);
-
-    AlertDialog.Builder builder = new AlertDialog.Builder(context);
-    builder.setTitle(context.getString(R.string.ExpirationDialog_disappearing_messages));
-    builder.setView(view);
-    builder.setPositiveButton(android.R.string.ok, (dialog, which) -> {
-      int selected = ((NumberPickerView)view.findViewById(R.id.expiration_number_picker)).getValue();
-      listener.onClick(context.getResources().getIntArray(R.array.expiration_times)[selected]);
-    });
-    builder.setNegativeButton(android.R.string.cancel, null);
-    builder.show();
-  }
-
-  private static View createNumberPickerView(final Context context, final int currentExpiration) {
-    final LayoutInflater   inflater                = LayoutInflater.from(context);
-    final View             view                    = inflater.inflate(R.layout.expiration_dialog, null);
-    final NumberPickerView numberPickerView        = view.findViewById(R.id.expiration_number_picker);
-    final TextView         textView                = view.findViewById(R.id.expiration_details);
-    final int[]            expirationTimes         = context.getResources().getIntArray(R.array.expiration_times);
-    final String[]         expirationDisplayValues = new String[expirationTimes.length];
-
-    int selectedIndex = expirationTimes.length - 1;
-
-    for (int i=0;i<expirationTimes.length;i++) {
-      expirationDisplayValues[i] = ExpirationUtil.getExpirationDisplayValue(context, expirationTimes[i]);
-
-      if ((currentExpiration >= expirationTimes[i]) &&
-          (i == expirationTimes.length -1 || currentExpiration < expirationTimes[i+1])) {
-        selectedIndex = i;
-      }
-    }
-
-    numberPickerView.setDisplayedValues(expirationDisplayValues);
-    numberPickerView.setMinValue(0);
-    numberPickerView.setMaxValue(expirationTimes.length-1);
-
-    NumberPickerView.OnValueChangeListener listener = (picker, oldVal, newVal) -> {
-      if (newVal == 0) {
-        textView.setText(R.string.ExpirationDialog_your_messages_will_not_expire);
-      } else {
-        textView.setText(context.getString(R.string.ExpirationDialog_your_messages_will_disappear_s_after_they_have_been_seen, picker.getDisplayedValues()[newVal]));
-      }
-    };
-
-    numberPickerView.setOnValueChangedListener(listener);
-    numberPickerView.setValue(selectedIndex);
-    listener.onValueChange(numberPickerView, selectedIndex, selectedIndex);
-
-    return view;
-  }
-
-  public interface OnClickListener {
-    public void onClick(int expirationTime);
-  }
-
-}