Bump version to 5.2.2

This reverts commit f24020e7b7.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,3 +1,12 @@
+---
+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.
 

.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

@@ -14,16 +14,13 @@ 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: Install NDK
-      run: echo "y" | sudo /usr/local/lib/android/sdk/tools/bin/sdkmanager --install "ndk;21.0.6113669" --sdk_root=${ANDROID_SDK_ROOT}
-
     - name: Validate Gradle Wrapper
       uses: gradle/wrapper-validation-action@v1
 

app/build.gradle

@@ -61,10 +61,10 @@ protobuf {
     }
 }
 
-def canonicalVersionCode = 751
-def canonicalVersionName = "5.0.0"
+def canonicalVersionCode = 771
+def canonicalVersionName = "5.2.2"
 
-def postFixSize = 10
+def postFixSize = 100
 def abiPostFix = ['universal'   : 0,
                   'armeabi-v7a' : 1,
                   'arm64-v8a'   : 2,
@@ -128,7 +128,6 @@ android {
         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 "int", "TRACE_EVENT_MAX", "3500"
 
         ndk {
             abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
@@ -206,6 +205,12 @@ android {
             minifyEnabled true
             proguardFiles = buildTypes.debug.proguardFiles
         }
+        perf {
+            initWith debug
+            isDefault false
+            debuggable false
+            matchingFallbacks = ['debug']
+        }
     }
 
     productFlavors {
@@ -229,7 +234,6 @@ android {
             ext.websiteUpdateUrl = "null"
             buildConfigField "boolean", "PLAY_STORE_DISABLED", "false"
             buildConfigField "String", "NOPLAY_UPDATE_URL", "$ext.websiteUpdateUrl"
-            buildConfigField "int", "TRACE_EVENT_MAX", "30_000"
         }
 
         prod {
@@ -311,8 +315,6 @@ dependencies {
     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.paging:paging-common:2.1.2"
-    implementation "androidx.paging:paging-runtime:2.1.2"
     implementation 'com.google.firebase:firebase-ml-vision:24.0.3'
     implementation 'com.google.firebase:firebase-ml-vision-face-model:20.0.1'
 
@@ -335,12 +337,14 @@ dependencies {
     implementation project(':libsignal-service')
     implementation project(':paging')
     implementation project(':core-util')
+    implementation project(':video')
+
     implementation 'org.signal:zkgroup-android:0.7.0'
     implementation 'org.whispersystems:signal-client-android:0.1.5'
     implementation 'com.google.protobuf:protobuf-javalite:3.10.0'
     implementation 'org.signal:argon2:13.1@aar'
 
-    implementation 'org.signal:ringrtc-android:2.8.5'
+    implementation 'org.signal:ringrtc-android:2.8.9'
 
     implementation "me.leolin:ShortcutBadger:1.1.16"
     implementation 'se.emilsjolander:stickylistheaders:2.7.0'

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;
@@ -24,6 +25,7 @@ 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}
@@ -42,8 +44,16 @@ public class FlipperSqlCipherAdapter extends DatabaseDriver<FlipperSqlCipherAdap
     try {
       Field databaseHelperField = DatabaseFactory.class.getDeclaredField("databaseHelper");
       databaseHelperField.setAccessible(true);
-      SQLCipherOpenHelper sqlCipherOpenHelper = (SQLCipherOpenHelper) databaseHelperField.get(DatabaseFactory.getInstance(getContext()));
-      return Collections.singletonList(new Descriptor(sqlCipherOpenHelper));
+
+      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);
     }
@@ -235,9 +245,9 @@ 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;
     }
 
@@ -247,11 +257,11 @@ public class FlipperSqlCipherAdapter extends DatabaseDriver<FlipperSqlCipherAdap
     }
 
     public @NonNull SQLiteDatabase getReadable() {
-      return sqlCipherOpenHelper.getReadableDatabase().getSqlCipherDatabase();
+      return sqlCipherOpenHelper.getSqlCipherDatabase();
     }
 
     public @NonNull SQLiteDatabase getWritable() {
-      return sqlCipherOpenHelper.getWritableDatabase().getSqlCipherDatabase();
+      return sqlCipherOpenHelper.getSqlCipherDatabase();
     }
   }
 }

app/src/main/AndroidManifest.xml

@@ -225,6 +225,17 @@
             <category android:name="android.intent.category.MULTIWINDOW_LAUNCHER" />
         </intent-filter>
 
+        <meta-data android:name="com.sec.minimode.icon.portrait.normal"
+                   android:resource="@mipmap/ic_launcher" />
+        <meta-data android:name="com.sec.minimode.icon.landscape.normal"
+                   android:resource="@mipmap/ic_launcher" />
+
+    </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" />
@@ -241,13 +252,7 @@
             <data android:scheme="https"
                   android:host="signal.group"/>
         </intent-filter>
-
-        <meta-data android:name="com.sec.minimode.icon.portrait.normal"
-                   android:resource="@mipmap/ic_launcher" />
-        <meta-data android:name="com.sec.minimode.icon.landscape.normal"
-                   android:resource="@mipmap/ic_launcher" />
-
-    </activity-alias>
+    </activity>
 
     <activity android:name=".conversation.ConversationActivity"
               android:windowSoftInputMode="stateUnchanged"
@@ -465,17 +470,11 @@
             android:windowSoftInputMode="adjustResize"
             android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
-    <activity android:name=".ClearProfileAvatarActivity"
-            android:theme="@style/Theme.AppCompat.Dialog.Alert"
-            android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"
-            android:icon="@drawable/clear_profile_avatar"
-            android:label="@string/AndroidManifest_remove_photo">
-
-        <intent-filter>
-            <action android:name="org.thoughtcrime.securesms.action.CLEAR_PROFILE_PHOTO"/>
-            <category android:name="android.intent.category.DEFAULT"/>
-        </intent-filter>
-    </activity>
+    <activity android:name=".ClearAvatarPromptActivity"
+              android:theme="@style/Theme.AppCompat.Dialog.Alert"
+              android:icon="@drawable/clear_profile_avatar"
+              android:label="@string/AndroidManifest_remove_photo"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".contacts.TurnOffContactJoinedNotificationsActivity"
               android:theme="@style/Theme.AppCompat.Dialog.Alert" />
@@ -510,7 +509,6 @@
 
     <activity android:name=".MainActivity"
               android:theme="@style/Theme.Signal.DayNight.NoActionBar"
-              android:launchMode="singleTask"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize" />
 
     <activity android:name=".pin.PinRestoreActivity"
@@ -802,12 +800,5 @@
 
     <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/org/thoughtcrime/securesms/AppCapabilities.java

@@ -8,14 +8,15 @@ public final class AppCapabilities {
   private AppCapabilities() {
   }
 
-  private static final boolean UUID_CAPABLE = false;
-  private static final boolean GV2_CAPABLE  = true;
+  private static final boolean UUID_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 AccountAttributes.Capabilities getCapabilities(boolean storageCapable) {
-    return new AccountAttributes.Capabilities(UUID_CAPABLE, GV2_CAPABLE, storageCapable, FeatureFlags.groupsV1AutoMigration());
+    return new AccountAttributes.Capabilities(UUID_CAPABLE, GV2_CAPABLE, storageCapable, GV1_MIGRATION);
   }
 }

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

@@ -50,6 +50,28 @@ public final class AppInitialization {
   public static void onPostBackupRestore(@NonNull Context context) {
     Log.i(TAG, "onPostBackupRestore()");
 
+    ApplicationDependencies.getMegaphoneRepository().onFirstEverAppLaunch();
+    SignalStore.onFirstEverAppLaunch();
+    SignalStore.onboarding().clearAll();
+    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.forReference(BlessedPacks.SWOON_HANDS.getPackId(), BlessedPacks.SWOON_HANDS.getPackKey()));
+    ApplicationDependencies.getJobManager().add(StickerPackDownloadJob.forReference(BlessedPacks.SWOON_FACES.getPackId(), BlessedPacks.SWOON_FACES.getPackKey()));
+  }
+
+  /**
+   * 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));

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

@@ -16,13 +16,13 @@
  */
 package org.thoughtcrime.securesms;
 
-import android.annotation.SuppressLint;
 import android.content.Context;
-import android.os.AsyncTask;
+import android.hardware.SensorManager;
 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;
@@ -33,10 +33,12 @@ import com.google.android.gms.security.ProviderInstaller;
 
 import org.conscrypt.Conscrypt;
 import org.signal.aesgcmprovider.AesGcmProvider;
+import org.signal.core.util.ShakeDetector;
 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.database.DatabaseFactory;
@@ -44,6 +46,7 @@ import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencyProvider;
 import org.thoughtcrime.securesms.gcm.FcmJobService;
+import org.thoughtcrime.securesms.jobmanager.JobManager;
 import org.thoughtcrime.securesms.jobs.CreateSignedPreKeyJob;
 import org.thoughtcrime.securesms.jobs.FcmRefreshJob;
 import org.thoughtcrime.securesms.jobs.GroupV1MigrationJob;
@@ -68,13 +71,15 @@ 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.shakereport.ShakeToReport;
 import org.thoughtcrime.securesms.storage.StorageSyncHelper;
-import org.thoughtcrime.securesms.tracing.Trace;
+import org.thoughtcrime.securesms.util.AppStartup;
 import org.thoughtcrime.securesms.util.DynamicTheme;
 import org.thoughtcrime.securesms.util.FeatureFlags;
 import org.thoughtcrime.securesms.util.SignalUncaughtExceptionHandler;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
 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;
@@ -93,7 +98,6 @@ import java.util.concurrent.TimeUnit;
  *
  * @author Moxie Marlinspike
  */
-@Trace
 public class ApplicationContext extends MultiDexApplication implements DefaultLifecycleObserver {
 
   private static final String TAG = ApplicationContext.class.getSimpleName();
@@ -110,59 +114,81 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
 
   @Override
   public void onCreate() {
+    Tracer.getInstance().start("Application#onCreate()");
+    AppStartup.getInstance().onApplicationCreate();
+
     long startTime = System.currentTimeMillis();
-    super.onCreate();
-    initializeSecurityProvider();
-    initializeLogging();
-    Log.i(TAG, "onCreate()");
-    initializeCrashHandling();
-    initializeAppDependencies();
-    initializeFirstEverAppLaunch();
-    initializeApplicationMigrations();
-    initializeMessageRetrieval();
-    initializeExpiringMessageManager();
-    initializeRevealableMessageManager();
-    initializeGcmCheck();
-    initializeSignedPreKeyCheck();
-    initializePeriodicTasks();
-    initializeCircumvention();
-    initializeRingRtc();
-    initializePendingMessages();
-    initializeBlobProvider();
-    initializeCleanup();
-    initializeGlideCodecs();
 
-    FeatureFlags.init();
-    NotificationChannels.create(this);
-    RefreshPreKeysJob.scheduleIfNecessary();
-    StorageSyncHelper.scheduleRoutineSync();
-    RegistrationUtil.maybeMarkRegistrationComplete(this);
-    ProcessLifecycleOwner.get().getLifecycle().addObserver(this);
-
-    if (Build.VERSION.SDK_INT < 21) {
-      AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
+    if (FeatureFlags.internalUser()) {
+      Tracer.getInstance().setMaxBufferSize(35_000);
     }
 
-    ApplicationDependencies.getJobManager().beginJobLoop();
+    super.onCreate();
 
-    DynamicTheme.setDefaultDayNightMode(this);
+    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("first-launch", this::initializeFirstEverAppLaunch)
+                            .addBlocking("app-migrations", this::initializeApplicationMigrations)
+                            .addBlocking("ring-rtc", this::initializeRingRtc)
+                            .addBlocking("mark-registration", () -> RegistrationUtil.maybeMarkRegistrationComplete(this))
+                            .addBlocking("lifecycle-observer", () -> ProcessLifecycleOwner.get().getLifecycle().addObserver(this))
+                            .addBlocking("message-retriever", this::initializeMessageRetrieval)
+                            .addBlocking("dynamic-theme", () -> DynamicTheme.setDefaultDayNightMode(this))
+                            .addBlocking("vector-compat", () -> {
+                              if (Build.VERSION.SDK_INT < 21) {
+                                AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
+                              }
+                            })
+                            .addNonBlocking(this::initializeRevealableMessageManager)
+                            .addNonBlocking(this::initializeGcmCheck)
+                            .addNonBlocking(this::initializeSignedPreKeyCheck)
+                            .addNonBlocking(this::initializePeriodicTasks)
+                            .addNonBlocking(this::initializeCircumvention)
+                            .addNonBlocking(this::initializePendingMessages)
+                            .addNonBlocking(this::initializeCleanup)
+                            .addNonBlocking(this::initializeGlideCodecs)
+                            .addNonBlocking(FeatureFlags::init)
+                            .addNonBlocking(RefreshPreKeysJob::scheduleIfNecessary)
+                            .addNonBlocking(StorageSyncHelper::scheduleRoutineSync)
+                            .addNonBlocking(() -> ApplicationDependencies.getJobManager().beginJobLoop())
+                            .addPostRender(this::initializeExpiringMessageManager)
+                            .addPostRender(this::initializeBlobProvider)
+                            .addPostRender(() -> NotificationChannels.create(this))
+                            .execute();
+
+    ProcessLifecycleOwner.get().getLifecycle().addObserver(this);
 
     Log.d(TAG, "onCreate() took " + (System.currentTimeMillis() - startTime) + " ms");
+    Tracer.getInstance().end("Application#onCreate()");
   }
 
   @Override
   public void onStart(@NonNull LifecycleOwner owner) {
+    long startTime = System.currentTimeMillis();
     isAppVisible = true;
     Log.i(TAG, "App is now visible.");
-    FeatureFlags.refreshIfNecessary();
-    ApplicationDependencies.getRecipientCache().warmUp();
-    RetrieveProfileJob.enqueueRoutineFetchIfNecessary(this);
-    GroupV1MigrationJob.enqueueRoutineMigrationsIfNecessary(this);
-    executePendingContactSync();
-    KeyCachingService.onAppForegrounded(this);
+
     ApplicationDependencies.getFrameRateTracker().begin();
     ApplicationDependencies.getMegaphoneRepository().onAppForegrounded();
-    checkBuildExpiration();
+
+    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
@@ -172,9 +198,13 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
     KeyCachingService.onAppBackgrounded(this);
     ApplicationDependencies.getMessageNotifier().clearVisibleThread();
     ApplicationDependencies.getFrameRateTracker().end();
+    ApplicationDependencies.getShakeToReport().disable();
   }
 
   public ExpiringMessageManager getExpiringMessageManager() {
+    if (expiringMessageManager == null) {
+      initializeExpiringMessageManager();
+    }
     return expiringMessageManager;
   }
 
@@ -247,13 +277,16 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
 
   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);
     }
   }
 
@@ -328,23 +361,15 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
     }
   }
 
-  @SuppressLint("StaticFieldLeak")
+  @WorkerThread
   private void initializeCircumvention() {
-    AsyncTask<Void, Void, Void> task = new AsyncTask<Void, Void, Void>() {
-      @Override
-      protected Void doInBackground(Void... params) {
-        if (new SignalServiceNetworkAccess(ApplicationContext.this).isCensored(ApplicationContext.this)) {
-          try {
-            ProviderInstaller.installIfNeeded(ApplicationContext.this);
-          } catch (Throwable t) {
-            Log.w(TAG, t);
-          }
-        }
-        return null;
+    if (new SignalServiceNetworkAccess(ApplicationContext.this).isCensored(ApplicationContext.this)) {
+      try {
+        ProviderInstaller.installIfNeeded(ApplicationContext.this);
+      } catch (Throwable t) {
+        Log.w(TAG, t);
       }
-    };
-
-    task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+    }
   }
 
   private void executePendingContactSync() {
@@ -365,17 +390,15 @@ public class ApplicationContext extends MultiDexApplication implements DefaultLi
     }
   }
 
+  @WorkerThread
   private void initializeBlobProvider() {
-    SignalExecutors.BOUNDED.execute(() -> {
-      BlobProvider.getInstance().onSessionStart(this);
-    });
+    BlobProvider.getInstance().onSessionStart(this);
   }
 
+  @WorkerThread
   private void initializeCleanup() {
-    SignalExecutors.BOUNDED.execute(() -> {
-      int deleted = DatabaseFactory.getAttachmentDatabase(this).deleteAbandonedPreuploadedAttachments();
-      Log.i(TAG, "Deleted " + deleted + " abandoned attachments.");
-    });
+    int deleted = DatabaseFactory.getAttachmentDatabase(this).deleteAbandonedPreuploadedAttachments();
+    Log.i(TAG, "Deleted " + deleted + " abandoned attachments.");
   }
 
   private void initializeGlideCodecs() {

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

@@ -39,9 +39,9 @@ import org.thoughtcrime.securesms.preferences.AppearancePreferenceFragment;
 import org.thoughtcrime.securesms.preferences.BackupsPreferenceFragment;
 import org.thoughtcrime.securesms.preferences.ChatsPreferenceFragment;
 import org.thoughtcrime.securesms.preferences.CorrectedPreferenceFragment;
+import org.thoughtcrime.securesms.preferences.DataAndStoragePreferenceFragment;
 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.preferences.widgets.UsernamePreference;
 import org.thoughtcrime.securesms.profiles.edit.EditProfileActivity;
@@ -65,6 +65,7 @@ public class ApplicationPreferencesActivity extends PassphraseRequiredActivity
     implements SharedPreferences.OnSharedPreferenceChangeListener
 {
   public static final String LAUNCH_TO_BACKUPS_FRAGMENT = "launch.to.backups.fragment";
+  public static final String LAUNCH_TO_HELP_FRAGMENT    = "launch.to.help.fragment";
 
   @SuppressWarnings("unused")
   private static final String TAG = ApplicationPreferencesActivity.class.getSimpleName();
@@ -104,6 +105,8 @@ public class ApplicationPreferencesActivity extends PassphraseRequiredActivity
       initFragment(android.R.id.content, new NotificationsPreferenceFragment());
     } else if (getIntent() != null && getIntent().getBooleanExtra(LAUNCH_TO_BACKUPS_FRAGMENT, false)) {
       initFragment(android.R.id.content, new BackupsPreferenceFragment());
+    } else if (getIntent() != null && getIntent().getBooleanExtra(LAUNCH_TO_HELP_FRAGMENT, false)) {
+      initFragment(android.R.id.content, new HelpFragment());
     } else if (icicle == null) {
       initFragment(android.R.id.content, new ApplicationPreferenceFragment());
     } else {
@@ -309,7 +312,7 @@ public class ApplicationPreferencesActivity extends PassphraseRequiredActivity
           fragment = new ChatsPreferenceFragment();
           break;
         case PREFERENCE_CATEGORY_STORAGE:
-          fragment = new StoragePreferenceFragment();
+          fragment = new DataAndStoragePreferenceFragment();
           break;
         case PREFERENCE_CATEGORY_DEVICES:
           Intent intent = new Intent(getActivity(), DeviceActivity.class);

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

@@ -15,6 +15,8 @@ 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.DynamicLanguageContextWrapper;
@@ -31,8 +33,10 @@ public abstract class BaseActivity extends AppCompatActivity {
 
   @Override
   protected void onCreate(Bundle savedInstanceState) {
+    AppStartup.getInstance().onCriticalRenderEventStart();
     logEvent("onCreate()");
     super.onCreate(savedInstanceState);
+    AppStartup.getInstance().onCriticalRenderEventEnd();
   }
 
   @Override
@@ -44,6 +48,7 @@ public abstract class BaseActivity extends AppCompatActivity {
   @Override
   protected void onStart() {
     logEvent("onStart()");
+    ApplicationDependencies.getShakeToReport().registerActivity(this);
     super.onStart();
   }
 

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

@@ -61,7 +61,10 @@ public interface BindableConversationItem extends Unbindable {
     void onVoiceNotePlay(@NonNull Uri uri, long messageId, double position);
     void onVoiceNoteSeekTo(@NonNull Uri uri, double position);
     void onGroupMigrationLearnMoreClicked(@NonNull GroupMigrationMembershipChange membershipChange);
+    void onDecryptionFailedLearnMoreClicked();
+    void onSafetyNumberLearnMoreClicked(@NonNull Recipient recipient);
     void onJoinGroupCallClicked();
+    void onInviteFriendsToGroupClicked(@NonNull GroupId.V2 groupId);
 
     /** @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/ClearAvatarPromptActivity.java

@@ -7,18 +7,21 @@ import android.view.ContextThemeWrapper;
 
 import androidx.appcompat.app.AlertDialog;
 
+import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.util.DynamicTheme;
 
-public class ClearProfileAvatarActivity extends Activity {
+public final class ClearAvatarPromptActivity extends Activity {
 
   private static final String ARG_TITLE = "arg_title";
 
   public static Intent createForUserProfilePhoto() {
-    return new Intent("org.thoughtcrime.securesms.action.CLEAR_PROFILE_PHOTO");
+    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("org.thoughtcrime.securesms.action.CLEAR_PROFILE_PHOTO");
+    Intent intent = new Intent(ApplicationDependencies.getApplication(), ClearAvatarPromptActivity.class);
     intent.putExtra(ARG_TITLE, R.string.ClearProfileActivity_remove_group_photo);
     return intent;
   }
@@ -27,10 +30,10 @@ public class ClearProfileAvatarActivity extends Activity {
   public void onResume() {
     super.onResume();
 
-    int titleId = getIntent().getIntExtra(ARG_TITLE, R.string.ClearProfileActivity_remove_profile_photo);
+    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(titleId)
+                   .setMessage(message)
                    .setNegativeButton(android.R.string.cancel, (dialog, which) -> finish())
                    .setPositiveButton(R.string.ClearProfileActivity_remove, (dialog, which) -> {
                      Intent result = new Intent();

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

@@ -448,8 +448,11 @@ public final class ContactSelectionListFragment extends LoggingFragment
           swipeRefresh.setVisibility(View.VISIBLE);
           reset();
         } else {
-          Toast.makeText(getContext(), R.string.ContactSelectionListFragment_error_retrieving_contacts_check_your_network_connection, Toast.LENGTH_LONG).show();
-          initializeNoContactsPermission();
+          Context context = getContext();
+          if (context != null) {
+            Toast.makeText(getContext(), R.string.ContactSelectionListFragment_error_retrieving_contacts_check_your_network_connection, Toast.LENGTH_LONG).show();
+            initializeNoContactsPermission();
+          }
         }
       }
     }.execute();

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;
@@ -150,7 +151,7 @@ public class DatabaseMigrationActivity extends PassphraseRequiredActivity {
         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 PassphraseRequiredActivity {
   }
 
   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/DeviceAddFragment.java

@@ -32,9 +32,9 @@ public class DeviceAddFragment extends LoggingFragment {
   @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.scannerView  = ViewUtil.findById(this.container, R.id.scanner);
-    this.devicesImage = ViewUtil.findById(this.container, R.id.devices);
+    this.overlay      = this.container.findViewById(R.id.overlay);
+    this.scannerView  = this.container.findViewById(R.id.scanner);
+    this.devicesImage = this.container.findViewById(R.id.devices);
 
     if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
       this.overlay.setOrientation(LinearLayout.HORIZONTAL);

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

@@ -28,7 +28,6 @@ import org.thoughtcrime.securesms.database.loaders.DeviceListLoader;
 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;
 
@@ -68,7 +67,7 @@ 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;

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

@@ -35,6 +35,7 @@ import org.thoughtcrime.securesms.sms.OutgoingTextMessage;
 import org.thoughtcrime.securesms.util.DynamicNoActionBarInviteTheme;
 import org.thoughtcrime.securesms.util.DynamicTheme;
 import org.thoughtcrime.securesms.util.ThemeUtil;
+import org.thoughtcrime.securesms.util.Util;
 import org.thoughtcrime.securesms.util.ViewUtil;
 import org.thoughtcrime.securesms.util.WindowUtil;
 import org.thoughtcrime.securesms.util.concurrent.ListenableFuture.Listener;
@@ -93,26 +94,33 @@ public class InviteActivity extends PassphraseRequiredActivity implements Contac
     slideInAnimation  = loadAnimation(R.anim.slide_from_bottom);
     slideOutAnimation = loadAnimation(R.anim.slide_to_bottom);
 
-    View                 shareButton     = ViewUtil.findById(this, R.id.share_button);
-    View                 smsButton       = ViewUtil.findById(this, R.id.sms_button);
-    Button               smsCancelButton = ViewUtil.findById(this, R.id.cancel_sms_button);
-    ContactFilterToolbar contactFilter   = ViewUtil.findById(this, R.id.contact_filter);
+    View                 shareButton     = findViewById(R.id.share_button);
+    Button               smsButton       = findViewById(R.id.sms_button);
+    Button               smsCancelButton = findViewById(R.id.cancel_sms_button);
+    ContactFilterToolbar contactFilter   = findViewById(R.id.contact_filter);
 
-    inviteText        = ViewUtil.findById(this, R.id.invite_text);
-    smsSendFrame      = ViewUtil.findById(this, R.id.sms_send_frame);
-    smsSendButton     = ViewUtil.findById(this, R.id.send_sms_button);
+    inviteText        = findViewById(R.id.invite_text);
+    smsSendFrame      = findViewById(R.id.sms_send_frame);
+    smsSendButton     = findViewById(R.id.send_sms_button);
     contactsFragment  = (ContactSelectionListFragment)getSupportFragmentManager().findFragmentById(R.id.contact_selection_list_fragment);
 
     inviteText.setText(getString(R.string.InviteActivity_lets_switch_to_signal, getString(R.string.install_url)));
     updateSmsButtonText(contactsFragment.getSelectedContacts().size());
 
     contactsFragment.setOnContactSelectedListener(this);
-    shareButton.setOnClickListener(new ShareClickListener());
-    smsButton.setOnClickListener(new SmsClickListener());
     smsCancelButton.setOnClickListener(new SmsCancelClickListener());
     smsSendButton.setOnClickListener(new SmsSendClickListener());
     contactFilter.setOnFilterChangedListener(new ContactFilterChangedListener());
     contactFilter.setNavigationIcon(R.drawable.ic_search_conversation_24);
+
+    if (Util.isDefaultSmsProvider(this)) {
+      shareButton.setOnClickListener(new ShareClickListener());
+      smsButton.setOnClickListener(new SmsClickListener());
+    } else {
+      shareButton.setVisibility(View.GONE);
+      smsButton.setOnClickListener(new ShareClickListener());
+      smsButton.setText(R.string.InviteActivity_share);
+    }
   }
 
   private Animation loadAnimation(@AnimRes int animResId) {

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

@@ -1,6 +1,7 @@
 package org.thoughtcrime.securesms;
 
 import android.app.Activity;
+import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
@@ -8,13 +9,12 @@ import android.os.Bundle;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
-import org.thoughtcrime.securesms.tracing.Trace;
+import org.thoughtcrime.securesms.util.AppStartup;
 import org.thoughtcrime.securesms.util.CachedInflater;
 import org.thoughtcrime.securesms.util.CommunicationActions;
 import org.thoughtcrime.securesms.util.DynamicNoActionBarTheme;
 import org.thoughtcrime.securesms.util.DynamicTheme;
 
-@Trace
 public class MainActivity extends PassphraseRequiredActivity {
 
   public static final int RESULT_CONFIG_CHANGED = Activity.RESULT_FIRST_USER + 901;
@@ -22,8 +22,19 @@ public class MainActivity extends PassphraseRequiredActivity {
   private final DynamicTheme  dynamicTheme = new DynamicNoActionBarTheme();
   private final MainNavigator navigator    = new MainNavigator(this);
 
+  public static @NonNull Intent clearTop(@NonNull Context context) {
+    Intent intent = new Intent(context, MainActivity.class);
+
+    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
+                    Intent.FLAG_ACTIVITY_NEW_TASK  |
+                    Intent.FLAG_ACTIVITY_SINGLE_TOP);
+
+    return intent;
+  }
+
   @Override
   protected void onCreate(Bundle savedInstanceState, boolean ready) {
+    AppStartup.getInstance().onCriticalRenderEventStart();
     super.onCreate(savedInstanceState, ready);
     setContentView(R.layout.main_activity);
 
@@ -34,6 +45,13 @@ public class MainActivity extends PassphraseRequiredActivity {
     CachedInflater.from(this).clear();
   }
 
+  @Override
+  public Intent getIntent() {
+    return super.getIntent().setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
+                                      Intent.FLAG_ACTIVITY_NEW_TASK  |
+                                      Intent.FLAG_ACTIVITY_SINGLE_TOP);
+  }
+
   @Override
   protected void onNewIntent(Intent intent) {
     super.onNewIntent(intent);

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

@@ -12,6 +12,7 @@ import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
 
 import org.signal.core.util.logging.Log;
+import org.signal.core.util.tracing.Tracer;
 import org.thoughtcrime.securesms.crypto.MasterSecretUtil;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.jobs.PushNotificationReceiveJob;
@@ -25,6 +26,7 @@ import org.thoughtcrime.securesms.push.SignalServiceNetworkAccess;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.registration.RegistrationNavigationActivity;
 import org.thoughtcrime.securesms.service.KeyCachingService;
+import org.thoughtcrime.securesms.util.AppStartup;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
 
 import java.util.Locale;
@@ -49,6 +51,8 @@ public abstract class PassphraseRequiredActivity extends BaseActivity implements
 
   @Override
   protected final void onCreate(Bundle savedInstanceState) {
+    Tracer.getInstance().start(Log.tag(getClass()) + "#onCreate()");
+    AppStartup.getInstance().onCriticalRenderEventStart();
     this.networkAccess = new SignalServiceNetworkAccess(this);
     onPreCreate();
 
@@ -61,6 +65,9 @@ public abstract class PassphraseRequiredActivity extends BaseActivity implements
       initializeClearKeyReceiver();
       onCreate(savedInstanceState, true);
     }
+
+    AppStartup.getInstance().onCriticalRenderEventEnd();
+    Tracer.getInstance().end(Log.tag(getClass()) + "#onCreate()");
   }
 
   protected void onPreCreate() {}
@@ -218,15 +225,17 @@ public abstract class PassphraseRequiredActivity extends BaseActivity implements
 
   private Intent getConversationListIntent() {
     // TODO [greyson] Navigation
-    return new Intent(this, MainActivity.class);
+    return MainActivity.clearTop(this);
   }
 
   private void initializeClearKeyReceiver() {
     this.clearKeyReceiver = new BroadcastReceiver() {
       @Override
       public void onReceive(Context context, Intent intent) {
-        Log.i(TAG, "onReceive() for clear key event");
-        onMasterSecretCleared();
+        Log.i(TAG, "onReceive() for clear key event. PasswordDisabled: " + TextSecurePreferences.isPasswordDisabled(context) + ", ScreenLock: " + TextSecurePreferences.isScreenLockEnabled(context));
+        if (TextSecurePreferences.isScreenLockEnabled(context) || !TextSecurePreferences.isPasswordDisabled(context)) {
+          onMasterSecretCleared();
+        }
       }
     };
 

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

@@ -35,7 +35,7 @@ public class ShortcutLauncherActivity extends AppCompatActivity {
     if (rawId == null) {
       Toast.makeText(this, R.string.ShortcutLauncherActivity_invalid_shortcut, Toast.LENGTH_SHORT).show();
       // TODO [greyson] Navigation
-      startActivity(new Intent(this, MainActivity.class));
+      startActivity(MainActivity.clearTop(this));
       finish();
       return;
     }
@@ -43,7 +43,7 @@ public class ShortcutLauncherActivity extends AppCompatActivity {
     Recipient        recipient = Recipient.live(RecipientId.from(rawId)).get();
     // TODO [greyson] Navigation
     TaskStackBuilder backStack = TaskStackBuilder.create(this)
-                                                 .addNextIntent(new Intent(this, MainActivity.class));
+                                                 .addNextIntent(MainActivity.clearTop(this));
 
     CommunicationActions.startConversation(this, recipient, null, backStack);
     finish();

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

@@ -11,8 +11,6 @@ import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 
-import org.thoughtcrime.securesms.util.ViewUtil;
-
 import java.util.List;
 
 public class TransportOptionsAdapter extends BaseAdapter {
@@ -55,9 +53,9 @@ public class TransportOptionsAdapter extends BaseAdapter {
     }
 
     TransportOption transport   = (TransportOption) getItem(position);
-    ImageView       imageView   = ViewUtil.findById(convertView, R.id.icon);
-    TextView        textView    = ViewUtil.findById(convertView, R.id.text);
-    TextView        subtextView = ViewUtil.findById(convertView, R.id.subtext);
+    ImageView       imageView   = convertView.findViewById(R.id.icon);
+    TextView        textView    = convertView.findViewById(R.id.text);
+    TextView        subtextView = convertView.findViewById(R.id.subtext);
 
     imageView.getBackground().setColorFilter(transport.getBackgroundColor(), Mode.MULTIPLY);
     imageView.setImageResource(transport.getDrawable());

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

@@ -258,24 +258,24 @@ public class VerifyIdentityActivity extends PassphraseRequiredActivity implement
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup viewGroup, Bundle bundle) {
       this.container        = ViewUtil.inflate(inflater, viewGroup, R.layout.verify_display_fragment);
-      this.numbersContainer = ViewUtil.findById(container, R.id.number_table);
-      this.qrCode           = ViewUtil.findById(container, R.id.qr_code);
-      this.verified         = ViewUtil.findById(container, R.id.verified_switch);
-      this.qrVerified       = ViewUtil.findById(container, R.id.qr_verified);
-      this.description      = ViewUtil.findById(container, R.id.description);
-      this.tapLabel         = ViewUtil.findById(container, R.id.tap_label);
-      this.codes[0]         = ViewUtil.findById(container, R.id.code_first);
-      this.codes[1]         = ViewUtil.findById(container, R.id.code_second);
-      this.codes[2]         = ViewUtil.findById(container, R.id.code_third);
-      this.codes[3]         = ViewUtil.findById(container, R.id.code_fourth);
-      this.codes[4]         = ViewUtil.findById(container, R.id.code_fifth);
-      this.codes[5]         = ViewUtil.findById(container, R.id.code_sixth);
-      this.codes[6]         = ViewUtil.findById(container, R.id.code_seventh);
-      this.codes[7]         = ViewUtil.findById(container, R.id.code_eighth);
-      this.codes[8]         = ViewUtil.findById(container, R.id.code_ninth);
-      this.codes[9]         = ViewUtil.findById(container, R.id.code_tenth);
-      this.codes[10]        = ViewUtil.findById(container, R.id.code_eleventh);
-      this.codes[11]        = ViewUtil.findById(container, R.id.code_twelth);
+      this.numbersContainer = container.findViewById(R.id.number_table);
+      this.qrCode           = container.findViewById(R.id.qr_code);
+      this.verified         = container.findViewById(R.id.verified_switch);
+      this.qrVerified       = container.findViewById(R.id.qr_verified);
+      this.description      = container.findViewById(R.id.description);
+      this.tapLabel         = container.findViewById(R.id.tap_label);
+      this.codes[0]         = container.findViewById(R.id.code_first);
+      this.codes[1]         = container.findViewById(R.id.code_second);
+      this.codes[2]         = container.findViewById(R.id.code_third);
+      this.codes[3]         = container.findViewById(R.id.code_fourth);
+      this.codes[4]         = container.findViewById(R.id.code_fifth);
+      this.codes[5]         = container.findViewById(R.id.code_sixth);
+      this.codes[6]         = container.findViewById(R.id.code_seventh);
+      this.codes[7]         = container.findViewById(R.id.code_eighth);
+      this.codes[8]         = container.findViewById(R.id.code_ninth);
+      this.codes[9]         = container.findViewById(R.id.code_tenth);
+      this.codes[10]        = container.findViewById(R.id.code_eleventh);
+      this.codes[11]        = container.findViewById(R.id.code_twelth);
 
       this.qrCode.setOnClickListener(clickListener);
       this.registerForContextMenu(numbersContainer);
@@ -664,7 +664,7 @@ public class VerifyIdentityActivity extends PassphraseRequiredActivity implement
 
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup viewGroup, Bundle bundle) {
       this.container  = ViewUtil.inflate(inflater, viewGroup, R.layout.verify_scan_fragment);
-      this.cameraView = ViewUtil.findById(container, R.id.scanner);
+      this.cameraView = container.findViewById(R.id.scanner);
 
       return container;
     }

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

@@ -27,15 +27,18 @@ import android.media.AudioManager;
 import android.os.Build;
 import android.os.Bundle;
 import android.util.Rational;
+import android.view.View;
 import android.view.Window;
+import android.view.WindowInsetsController;
 import android.view.WindowManager;
 
 import androidx.annotation.NonNull;
 import androidx.appcompat.app.AlertDialog;
-import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.app.AppCompatDelegate;
 import androidx.core.content.ContextCompat;
 import androidx.lifecycle.ViewModelProviders;
+import androidx.transition.Transition;
+import androidx.transition.TransitionListenerAdapter;
 
 import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
@@ -59,18 +62,19 @@ import org.thoughtcrime.securesms.ringrtc.RemotePeer;
 import org.thoughtcrime.securesms.service.WebRtcCallService;
 import org.thoughtcrime.securesms.sms.MessageSender;
 import org.thoughtcrime.securesms.util.EllapsedTimeFormatter;
+import org.thoughtcrime.securesms.util.FullscreenHelper;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import org.thoughtcrime.securesms.util.Util;
+import org.thoughtcrime.securesms.util.WindowUtil;
 import org.whispersystems.libsignal.IdentityKey;
 import org.whispersystems.signalservice.api.messages.calls.HangupMessage;
 import org.whispersystems.signalservice.api.messages.calls.OfferMessage;
 
 import java.util.List;
 
-public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumberChangeDialog.Callback {
+public class WebRtcCallActivity extends BaseActivity implements SafetyNumberChangeDialog.Callback {
 
-
-  private static final String TAG = WebRtcCallActivity.class.getSimpleName();
+  private static final String TAG = Log.tag(WebRtcCallActivity.class);
 
   private static final int STANDARD_DELAY_FINISH = 1000;
 
@@ -82,6 +86,7 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
 
   private CallParticipantsListUpdatePopupWindow participantUpdateWindow;
 
+  private FullscreenHelper    fullscreenHelper;
   private WebRtcCallView      callScreen;
   private TooltipPopup        videoTooltip;
   private WebRtcCallViewModel viewModel;
@@ -102,8 +107,8 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
 
     requestWindowFeature(Window.FEATURE_NO_TITLE);
     setContentView(R.layout.webrtc_call_activity);
-    //noinspection ConstantConditions
-    getSupportActionBar().hide();
+
+    fullscreenHelper = new FullscreenHelper(this);
 
     setVolumeControlStream(AudioManager.STREAM_VOICE_CALL);
 
@@ -128,7 +133,7 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
   }
 
   @Override
-  public void onNewIntent(Intent intent){
+  public void onNewIntent(Intent intent) {
     Log.i(TAG, "onNewIntent");
     super.onNewIntent(intent);
     processIntent(intent);
@@ -143,9 +148,9 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
       EventBus.getDefault().unregister(this);
     }
 
-    if (!viewModel.isCallingStarted()) {
+    if (!viewModel.isCallStarting()) {
       CallParticipantsState state = viewModel.getCallParticipantsState().getValue();
-      if (state != null && state.getCallState() == WebRtcViewModel.State.CALL_PRE_JOIN) {
+      if (state != null && state.getCallState().isPreJoinOrNetworkUnavailable()) {
         finish();
       }
     }
@@ -158,9 +163,9 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
 
     EventBus.getDefault().unregister(this);
 
-    if (!viewModel.isCallingStarted()) {
+    if (!viewModel.isCallStarting()) {
       CallParticipantsState state = viewModel.getCallParticipantsState().getValue();
-      if (state != null && state.getCallState() == WebRtcViewModel.State.CALL_PRE_JOIN) {
+      if (state != null && state.getCallState().isPreJoinOrNetworkUnavailable()) {
         Intent intent = new Intent(this, WebRtcCallService.class);
         intent.setAction(WebRtcCallService.ACTION_CANCEL_PRE_JOIN_CALL);
         startService(intent);
@@ -188,6 +193,7 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
   @Override
   public void onPictureInPictureModeChanged(boolean isInPictureInPictureMode, Configuration newConfig) {
     viewModel.setIsInPipMode(isInPictureInPictureMode);
+    participantUpdateWindow.setEnabled(!isInPictureInPictureMode);
   }
 
   private boolean enterPipModeIfPossible() {
@@ -196,6 +202,8 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
               .setAspectRatio(new Rational(9, 16))
               .build();
       enterPictureInPictureMode(params);
+      CallParticipantsListDialog.dismiss(getSupportFragmentManager());
+
       return true;
     }
     return false;
@@ -241,6 +249,8 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
     viewModel.getCallParticipantsState().observe(this, callScreen::updateCallParticipants);
     viewModel.getCallParticipantListUpdate().observe(this, participantUpdateWindow::addCallParticipantListUpdate);
     viewModel.getSafetyNumberChangeEvent().observe(this, this::handleSafetyNumberChangeEvent);
+    viewModel.getGroupMembers().observe(this, unused -> updateGroupMembersForGroupCall());
+    viewModel.shouldShowSpeakerHint().observe(this, this::updateSpeakerHint);
 
     callScreen.getViewTreeObserver().addOnGlobalLayoutListener(() -> {
       CallParticipantsState state = viewModel.getCallParticipantsState().getValue();
@@ -468,7 +478,6 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
   private void handleServerFailure() {
     EventBus.getDefault().removeStickyEvent(WebRtcViewModel.class);
     callScreen.setStatus(getString(R.string.RedPhone_network_failed));
-    delayedFinish();
   }
 
   private void handleNoSuchUser(final @NonNull WebRtcViewModel event) {
@@ -505,6 +514,18 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
     }
   }
 
+  private void updateGroupMembersForGroupCall() {
+    startService(new Intent(this, WebRtcCallService.class).setAction(WebRtcCallService.ACTION_GROUP_REQUEST_UPDATE_MEMBERS));
+  }
+
+  private void updateSpeakerHint(boolean showSpeakerHint) {
+    if (showSpeakerHint) {
+      callScreen.showSpeakerViewHint();
+    } else {
+      callScreen.hideSpeakerViewHint();
+    }
+  }
+
   @Override
   public void onSendAnywayAfterSafetyNumberChange(@NonNull List<RecipientId> changedRecipients) {
     CallParticipantsState state = viewModel.getCallParticipantsState().getValue();
@@ -514,7 +535,7 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
             .putExtra(WebRtcCallService.EXTRA_RECIPIENT_IDS, RecipientId.toSerializedList(changedRecipients));
       startService(intent);
     } else {
-      startCall(state.getLocalParticipant().isVideoEnabled());
+      viewModel.startCall(state.getLocalParticipant().isVideoEnabled());
     }
   }
 
@@ -525,7 +546,7 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
   public void onCanceled() {
     CallParticipantsState state = viewModel.getCallParticipantsState().getValue();
     if (state != null && state.getGroupCallState().isNotIdle()) {
-      if (state.getCallState() == WebRtcViewModel.State.CALL_PRE_JOIN) {
+      if (state.getCallState().isPreJoinOrNetworkUnavailable()) {
         Intent intent = new Intent(this, WebRtcCallService.class);
         intent.setAction(WebRtcCallService.ACTION_CANCEL_PRE_JOIN_CALL);
         startService(intent);
@@ -622,6 +643,16 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
       }
     }
 
+    @Override
+    public void showSystemUI() {
+      fullscreenHelper.showSystemUI();
+    }
+
+    @Override
+    public void hideSystemUI() {
+      fullscreenHelper.hideSystemUI();
+    }
+
     @Override
     public void onAudioOutputChanged(@NonNull WebRtcAudioOutput audioOutput) {
       switch (audioOutput) {
@@ -687,5 +718,10 @@ public class WebRtcCallActivity extends AppCompatActivity implements SafetyNumbe
     public void onPageChanged(@NonNull CallParticipantsState.SelectedPage page) {
       viewModel.setIsViewingFocusedParticipant(page);
     }
+
+    @Override
+    public void onLocalPictureInPictureClicked() {
+      viewModel.onLocalPictureInPictureClicked();
+    }
   }
 }

app/src/main/java/org/thoughtcrime/securesms/backup/BackupDialog.java

@@ -1,6 +1,7 @@
 package org.thoughtcrime.securesms.backup;
 
 
+import android.content.ActivityNotFoundException;
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
@@ -126,7 +127,12 @@ public class BackupDialog {
                                      Intent.FLAG_GRANT_WRITE_URI_PERMISSION       |
                                      Intent.FLAG_GRANT_READ_URI_PERMISSION);
 
-                     fragment.startActivityForResult(intent, requestCode);
+                    try {
+                       fragment.startActivityForResult(intent, requestCode);
+                     } catch (ActivityNotFoundException e) {
+                       Toast.makeText(fragment.requireContext(), R.string.BackupDialog_no_file_picker_available, Toast.LENGTH_LONG)
+                            .show();
+                     }
 
                      dialog.dismiss();
                    }))

app/src/main/java/org/thoughtcrime/securesms/backup/FullBackupExporter.java

@@ -74,11 +74,7 @@ public class FullBackupExporter extends FullBackupBase {
     OneTimePreKeyDatabase.TABLE_NAME,
     SessionDatabase.TABLE_NAME,
     SearchDatabase.SMS_FTS_TABLE_NAME,
-    SearchDatabase.MMS_FTS_TABLE_NAME,
-    JobDatabase.JOBS_TABLE_NAME,
-    JobDatabase.CONSTRAINTS_TABLE_NAME,
-    JobDatabase.DEPENDENCIES_TABLE_NAME,
-    KeyValueDatabase.TABLE_NAME
+    SearchDatabase.MMS_FTS_TABLE_NAME
   );
 
   public static void export(@NonNull Context context,

app/src/main/java/org/thoughtcrime/securesms/components/ComposeText.java

@@ -81,8 +81,8 @@ public class ComposeText extends EmojiEditText {
   }
 
   @Override
-  protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
-    super.onLayout(changed, left, top, right, bottom);
+  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 
     if (!TextUtils.isEmpty(hint)) {
       if (!TextUtils.isEmpty(subHint)) {
@@ -92,6 +92,7 @@ public class ComposeText extends EmojiEditText {
       } else {
         setHint(ellipsizeToWidth(hint));
       }
+      super.onMeasure(widthMeasureSpec, heightMeasureSpec);
     }
   }
 

app/src/main/java/org/thoughtcrime/securesms/components/ConversationItemFooter.java

@@ -6,7 +6,6 @@ import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffColorFilter;
-import android.os.AsyncTask;
 import android.util.AttributeSet;
 import android.view.View;
 import android.widget.ImageView;
@@ -20,6 +19,7 @@ import com.airbnb.lottie.LottieAnimationView;
 import com.airbnb.lottie.LottieProperty;
 import com.airbnb.lottie.model.KeyPath;
 
+import org.signal.core.util.concurrent.SignalExecutors;
 import org.thoughtcrime.securesms.ApplicationContext;
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
@@ -185,20 +185,16 @@ public class ConversationItemFooter extends LinearLayout {
           ApplicationContext.getInstance(getContext()).getExpiringMessageManager().checkSchedule();
         }
       } else if (!messageRecord.isOutgoing() && !messageRecord.isMediaPending()) {
-        new AsyncTask<Void, Void, Void>() {
-          @Override
-          protected Void doInBackground(Void... params) {
-            ExpiringMessageManager expirationManager = ApplicationContext.getInstance(getContext()).getExpiringMessageManager();
-            long                   id                = messageRecord.getId();
-            boolean                mms               = messageRecord.isMms();
+        SignalExecutors.BOUNDED.execute(() -> {
+          ExpiringMessageManager expirationManager = ApplicationContext.getInstance(getContext()).getExpiringMessageManager();
+          long                   id                = messageRecord.getId();
+          boolean                mms               = messageRecord.isMms();
 
-            if (mms) DatabaseFactory.getMmsDatabase(getContext()).markExpireStarted(id);
-            else     DatabaseFactory.getSmsDatabase(getContext()).markExpireStarted(id);
+          if (mms) DatabaseFactory.getMmsDatabase(getContext()).markExpireStarted(id);
+          else     DatabaseFactory.getSmsDatabase(getContext()).markExpireStarted(id);
 
-            expirationManager.scheduleDeletion(id, mms, messageRecord.getExpiresIn());
-            return null;
-          }
-        }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+          expirationManager.scheduleDeletion(id, mms, messageRecord.getExpiresIn());
+        });
       }
     } else {
       this.timerView.setVisibility(View.GONE);

app/src/main/java/org/thoughtcrime/securesms/components/FullScreenDialogFragment.java

@@ -27,8 +27,7 @@ public abstract class FullScreenDialogFragment extends DialogFragment {
   public void onCreate(@Nullable Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     
-    setStyle(STYLE_NO_FRAME, ThemeUtil.isDarkTheme(requireActivity()) ? R.style.TextSecure_DarkTheme_FullScreenDialog
-                                                                      : R.style.TextSecure_LightTheme_FullScreenDialog);
+    setStyle(STYLE_NO_FRAME, R.style.Signal_DayNight_Dialog_FullScreen);
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/components/LabeledEditText.java

@@ -8,6 +8,7 @@ import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.inputmethod.InputMethodManager;
 import android.widget.EditText;
 import android.widget.FrameLayout;
 import android.widget.TextView;
@@ -91,4 +92,18 @@ public class LabeledEditText extends FrameLayout implements View.OnFocusChangeLi
     super.setEnabled(enabled);
     input.setEnabled(enabled);
   }
+
+  public void focusAndMoveCursorToEndAndOpenKeyboard() {
+    input.requestFocus();
+
+    int numberLength = getText().length();
+    input.setSelection(numberLength, numberLength);
+
+    InputMethodManager imm = (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
+    imm.showSoftInput(input, InputMethodManager.SHOW_IMPLICIT);
+
+    if (!imm.isAcceptingText()) {
+      imm.toggleSoftInput(InputMethodManager.SHOW_IMPLICIT, InputMethodManager.HIDE_IMPLICIT_ONLY);
+    }
+  }
 }

app/src/main/java/org/thoughtcrime/securesms/components/MicrophoneRecorderView.java

@@ -23,7 +23,6 @@ import androidx.core.view.ViewCompat;
 
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.permissions.Permissions;
-import org.thoughtcrime.securesms.util.ViewUtil;
 
 public final class MicrophoneRecorderView extends FrameLayout implements View.OnTouchListener {
 
@@ -55,7 +54,7 @@ public final class MicrophoneRecorderView extends FrameLayout implements View.On
     floatingRecordButton = new FloatingRecordButton(getContext(), findViewById(R.id.quick_audio_fab));
     lockDropTarget       = new LockDropTarget      (getContext(), findViewById(R.id.lock_drop_target));
 
-    View recordButton = ViewUtil.findById(this, R.id.quick_audio_toggle);
+    View recordButton = findViewById(R.id.quick_audio_toggle);
     recordButton.setOnTouchListener(this);
   }
 

app/src/main/java/org/thoughtcrime/securesms/components/RecentPhotoViewRail.java

@@ -32,7 +32,6 @@ import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.database.CursorRecyclerViewAdapter;
 import org.thoughtcrime.securesms.database.loaders.RecentPhotosLoader;
 import org.thoughtcrime.securesms.mms.GlideApp;
-import org.thoughtcrime.securesms.util.ViewUtil;
 
 public class RecentPhotoViewRail extends FrameLayout implements LoaderManager.LoaderCallbacks<Cursor> {
 
@@ -52,7 +51,7 @@ public class RecentPhotoViewRail extends FrameLayout implements LoaderManager.Lo
 
     inflate(context, R.layout.recent_photo_view, this);
 
-    this.recyclerView = ViewUtil.findById(this, R.id.photo_list);
+    this.recyclerView = findViewById(R.id.photo_list);
     this.recyclerView.setLayoutManager(new LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false));
     this.recyclerView.setItemAnimator(new DefaultItemAnimator());
   }
@@ -158,7 +157,7 @@ public class RecentPhotoViewRail extends FrameLayout implements LoaderManager.Lo
       RecentPhotoViewHolder(View itemView) {
         super(itemView);
 
-        this.imageView = ViewUtil.findById(itemView, R.id.thumbnail);
+        this.imageView = itemView.findViewById(R.id.thumbnail);
       }
     }
   }

app/src/main/java/org/thoughtcrime/securesms/components/RecyclerViewFastScroller.java

@@ -36,7 +36,6 @@ import androidx.recyclerview.widget.RecyclerView;
 
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.util.Util;
-import org.thoughtcrime.securesms.util.ViewUtil;
 
 public final class RecyclerViewFastScroller extends LinearLayout {
   private static final int BUBBLE_ANIMATION_DURATION = 100;
@@ -75,8 +74,8 @@ public final class RecyclerViewFastScroller extends LinearLayout {
     setClipChildren(false);
     setScrollContainer(true);
     inflate(context, R.layout.recycler_view_fast_scroller, this);
-    bubble = ViewUtil.findById(this, R.id.fastscroller_bubble);
-    handle = ViewUtil.findById(this, R.id.fastscroller_handle);
+    bubble = findViewById(R.id.fastscroller_bubble);
+    handle = findViewById(R.id.fastscroller_handle);
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/components/ThreadPhotoRailView.java

@@ -21,7 +21,6 @@ import org.thoughtcrime.securesms.database.MediaDatabase;
 import org.thoughtcrime.securesms.mms.GlideRequests;
 import org.thoughtcrime.securesms.mms.Slide;
 import org.thoughtcrime.securesms.util.MediaUtil;
-import org.thoughtcrime.securesms.util.ViewUtil;
 
 public class ThreadPhotoRailView extends FrameLayout {
 
@@ -41,7 +40,7 @@ public class ThreadPhotoRailView extends FrameLayout {
 
     inflate(context, R.layout.recipient_preference_photo_rail, this);
 
-    this.recyclerView = ViewUtil.findById(this, R.id.photo_list);
+    this.recyclerView = findViewById(R.id.photo_list);
     this.recyclerView.setLayoutManager(new LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false));
     this.recyclerView.setItemAnimator(new DefaultItemAnimator());
     this.recyclerView.setNestedScrollingEnabled(false);
@@ -112,7 +111,7 @@ public class ThreadPhotoRailView extends FrameLayout {
       ThreadPhotoViewHolder(View itemView) {
         super(itemView);
 
-        this.imageView = ViewUtil.findById(itemView, R.id.thumbnail);
+        this.imageView = itemView.findViewById(R.id.thumbnail);
       }
     }
   }

app/src/main/java/org/thoughtcrime/securesms/components/TransferControlView.java

@@ -22,7 +22,6 @@ import org.thoughtcrime.securesms.attachments.Attachment;
 import org.thoughtcrime.securesms.database.AttachmentDatabase;
 import org.thoughtcrime.securesms.events.PartProgressEvent;
 import org.thoughtcrime.securesms.mms.Slide;
-import org.thoughtcrime.securesms.util.ViewUtil;
 
 import java.util.Collections;
 import java.util.HashMap;
@@ -61,16 +60,16 @@ public final class TransferControlView extends FrameLayout {
     inflate(context, R.layout.transfer_controls_view, this);
 
     setLongClickable(false);
-    ViewUtil.setBackground(this, ContextCompat.getDrawable(context, R.drawable.transfer_controls_background));
+    setBackground(ContextCompat.getDrawable(context, R.drawable.transfer_controls_background));
     setVisibility(GONE);
     setLayoutTransition(new LayoutTransition());
 
     this.networkProgress      = new HashMap<>();
     this.compresssionProgress = new HashMap<>();
 
-    this.progressWheel       = ViewUtil.findById(this, R.id.progress_wheel);
-    this.downloadDetails     = ViewUtil.findById(this, R.id.download_details);
-    this.downloadDetailsText = ViewUtil.findById(this, R.id.download_details_text);
+    this.progressWheel       = findViewById(R.id.progress_wheel);
+    this.downloadDetails     = findViewById(R.id.download_details);
+    this.downloadDetailsText = findViewById(R.id.download_details_text);
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/components/TypingStatusSender.java

@@ -1,6 +1,7 @@
 package org.thoughtcrime.securesms.components;
 
 import android.annotation.SuppressLint;
+import android.app.Application;
 import android.content.Context;
 
 import androidx.annotation.NonNull;
@@ -21,11 +22,9 @@ public class TypingStatusSender {
   private static final long REFRESH_TYPING_TIMEOUT = TimeUnit.SECONDS.toMillis(10);
   private static final long PAUSE_TYPING_TIMEOUT   = TimeUnit.SECONDS.toMillis(3);
 
-  private final Context              context;
   private final Map<Long, TimerPair> selfTypingTimers;
 
-  public TypingStatusSender(@NonNull Context context) {
-    this.context          = context;
+  public TypingStatusSender() {
     this.selfTypingTimers = new HashMap<>();
   }
 

app/src/main/java/org/thoughtcrime/securesms/components/ZoomingImageView.java

@@ -3,14 +3,11 @@ package org.thoughtcrime.securesms.components;
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.net.Uri;
-import android.os.AsyncTask;
 import android.util.AttributeSet;
-import android.util.Pair;
 import android.view.View;
 import android.widget.FrameLayout;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 
 import com.bumptech.glide.load.engine.DiskCacheStrategy;
 import com.bumptech.glide.request.target.Target;
@@ -29,6 +26,8 @@ import org.thoughtcrime.securesms.mms.PartAuthority;
 import org.thoughtcrime.securesms.util.BitmapDecodingException;
 import org.thoughtcrime.securesms.util.BitmapUtil;
 import org.thoughtcrime.securesms.util.MediaUtil;
+import org.thoughtcrime.securesms.util.ViewUtil;
+import org.thoughtcrime.securesms.util.concurrent.SimpleTask;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -83,32 +82,27 @@ public class ZoomingImageView extends FrameLayout {
 
     Log.i(TAG, "Max texture size: " + maxTextureSize);
 
-    new AsyncTask<Void, Void, Pair<Integer, Integer>>() {
-      @Override
-      protected @Nullable Pair<Integer, Integer> doInBackground(Void... params) {
-        if (MediaUtil.isGif(contentType)) return null;
+    SimpleTask.run(ViewUtil.getActivityLifecycle(this), () -> {
+      if (MediaUtil.isGif(contentType)) return null;
 
-        try {
-          InputStream inputStream = PartAuthority.getAttachmentStream(context, uri);
-          return BitmapUtil.getDimensions(inputStream);
-        } catch (IOException | BitmapDecodingException e) {
-          Log.w(TAG, e);
-          return null;
-        }
+      try {
+        InputStream inputStream = PartAuthority.getAttachmentStream(context, uri);
+        return BitmapUtil.getDimensions(inputStream);
+      } catch (IOException | BitmapDecodingException e) {
+        Log.w(TAG, e);
+        return null;
       }
+    }, dimensions -> {
+      Log.i(TAG, "Dimensions: " + (dimensions == null ? "(null)" : dimensions.first + ", " + dimensions.second));
 
-      protected void onPostExecute(@Nullable Pair<Integer, Integer> dimensions) {
-        Log.i(TAG, "Dimensions: " + (dimensions == null ? "(null)" : dimensions.first + ", " + dimensions.second));
-
-        if (dimensions == null || (dimensions.first <= maxTextureSize && dimensions.second <= maxTextureSize)) {
-          Log.i(TAG, "Loading in standard image view...");
-          setImageViewUri(glideRequests, uri);
-        } else {
-          Log.i(TAG, "Loading in subsampling image view...");
-          setSubsamplingImageViewUri(uri);
-        }
+      if (dimensions == null || (dimensions.first <= maxTextureSize && dimensions.second <= maxTextureSize)) {
+        Log.i(TAG, "Loading in standard image view...");
+        setImageViewUri(glideRequests, uri);
+      } else {
+        Log.i(TAG, "Loading in subsampling image view...");
+        setSubsamplingImageViewUri(uri);
       }
-    }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+    });
   }
 
   private void setImageViewUri(@NonNull GlideRequests glideRequests, @NonNull Uri uri) {

app/src/main/java/org/thoughtcrime/securesms/components/emoji/EmojiKeyboardProvider.java

@@ -39,6 +39,7 @@ public class EmojiKeyboardProvider implements MediaKeyboardProvider,
   private final EmojiEventListener   emojiEventListener;
 
   private Controller controller;
+  private int        currentPosition;
 
   public EmojiKeyboardProvider(@NonNull Context context, @Nullable EmojiEventListener emojiEventListener) {
     this.context            = context;
@@ -66,11 +67,18 @@ public class EmojiKeyboardProvider implements MediaKeyboardProvider,
 
     models.add(recentModel);
     models.addAll(EmojiPages.DISPLAY_PAGES);
+
+    currentPosition = recentModel.getEmoji().size() > 0 ? 0 : 1;
   }
 
   @Override
   public void requestPresentation(@NonNull Presenter presenter, boolean isSoloProvider) {
-    presenter.present(this, emojiPagerAdapter, this, this, null, null, recentModel.getEmoji().size() > 0 ? 0 : 1);
+    presenter.present(this, emojiPagerAdapter, this, this, null, null, currentPosition);
+  }
+
+  @Override
+  public void setCurrentPosition(int currentPosition) {
+    this.currentPosition = currentPosition;
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/components/emoji/MediaKeyboard.java

@@ -212,6 +212,7 @@ public class MediaKeyboard extends FrameLayout implements InputView,
       public void onPageSelected(int i) {
         categoryTabAdapter.setActivePosition(i);
         categoryTabs.smoothScrollToPosition(i);
+        providers[providerIndex].setCurrentPosition(i);
       }
 
       @Override

app/src/main/java/org/thoughtcrime/securesms/components/emoji/MediaKeyboardProvider.java

@@ -14,6 +14,7 @@ public interface MediaKeyboardProvider {
   /** @return True if the click was handled with provider-specific logic, otherwise false */
   void requestPresentation(@NonNull Presenter presenter, boolean isSoloProvider);
   void setController(@Nullable Controller controller);
+  void setCurrentPosition(int currentPosition);
 
   interface BackspaceObserver {
     void onBackspaceClicked();

app/src/main/java/org/thoughtcrime/securesms/components/emoji/parsing/EmojiPageBitmap.java

@@ -5,7 +5,6 @@ import android.content.Context;
 import android.content.res.AssetManager;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
-import android.os.AsyncTask;
 
 import androidx.annotation.NonNull;
 
@@ -14,6 +13,7 @@ import org.thoughtcrime.securesms.components.emoji.EmojiPageModel;
 import org.thoughtcrime.securesms.util.ListenableFutureTask;
 import org.thoughtcrime.securesms.util.Stopwatch;
 import org.thoughtcrime.securesms.util.Util;
+import org.thoughtcrime.securesms.util.concurrent.SimpleTask;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -56,16 +56,11 @@ public class EmojiPageBitmap {
         return null;
       };
       task = new ListenableFutureTask<>(callable);
-      new AsyncTask<Void, Void, Void>() {
-        @Override protected Void doInBackground(Void... params) {
-          task.run();
-          return null;
-        }
-
-        @Override protected void onPostExecute(Void aVoid) {
-          task = null;
-        }
-      }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+      SimpleTask.run(() -> {
+                       task.run();
+                       return null;
+                     },
+                     unused -> task = null);
     }
     return task;
   }

app/src/main/java/org/thoughtcrime/securesms/components/identity/UntrustedSendDialog.java

@@ -3,7 +3,6 @@ package org.thoughtcrime.securesms.components.identity;
 
 import android.content.Context;
 import android.content.DialogInterface;
-import android.os.AsyncTask;
 
 import androidx.annotation.NonNull;
 import androidx.appcompat.app.AlertDialog;
@@ -12,6 +11,7 @@ import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
 import org.thoughtcrime.securesms.database.IdentityDatabase;
 import org.thoughtcrime.securesms.database.IdentityDatabase.IdentityRecord;
+import org.thoughtcrime.securesms.util.concurrent.SimpleTask;
 
 import java.util.List;
 
@@ -42,23 +42,15 @@ public class UntrustedSendDialog extends AlertDialog.Builder implements DialogIn
   public void onClick(DialogInterface dialog, int which) {
     final IdentityDatabase identityDatabase = DatabaseFactory.getIdentityDatabase(getContext());
 
-    new AsyncTask<Void, Void, Void>() {
-      @Override
-      protected Void doInBackground(Void... params) {
-        synchronized (SESSION_LOCK) {
-          for (IdentityRecord identityRecord : untrustedRecords) {
-            identityDatabase.setApproval(identityRecord.getRecipientId(), true);
-          }
+    SimpleTask.run(() -> {
+      synchronized (SESSION_LOCK) {
+        for (IdentityRecord identityRecord : untrustedRecords) {
+          identityDatabase.setApproval(identityRecord.getRecipientId(), true);
         }
-
-        return null;
       }
 
-      @Override
-      protected void onPostExecute(Void result) {
-        resendListener.onResendMessage();
-      }
-    }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+      return null;
+    }, unused -> resendListener.onResendMessage());
   }
 
   public interface ResendListener {

app/src/main/java/org/thoughtcrime/securesms/components/identity/UnverifiedBannerView.java

@@ -17,7 +17,6 @@ import androidx.annotation.RequiresApi;
 import org.signal.core.util.logging.Log;
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.database.IdentityDatabase.IdentityRecord;
-import org.thoughtcrime.securesms.util.ViewUtil;
 
 import java.util.List;
 
@@ -53,9 +52,9 @@ public class UnverifiedBannerView extends LinearLayout {
 
   private void initialize() {
     LayoutInflater.from(getContext()).inflate(R.layout.unverified_banner_view, this, true);
-    this.container   = ViewUtil.findById(this, R.id.container);
-    this.text        = ViewUtil.findById(this, R.id.unverified_text);
-    this.closeButton = ViewUtil.findById(this, R.id.cancel);
+    this.container   = findViewById(R.id.container);
+    this.text        = findViewById(R.id.unverified_text);
+    this.closeButton = findViewById(R.id.cancel);
   }
 
   public void display(@NonNull final String text,

app/src/main/java/org/thoughtcrime/securesms/components/location/SignalMapView.java

@@ -18,7 +18,6 @@ import com.google.android.gms.maps.OnMapReadyCallback;
 import com.google.android.gms.maps.model.MarkerOptions;
 
 import org.thoughtcrime.securesms.R;
-import org.thoughtcrime.securesms.util.ViewUtil;
 import org.thoughtcrime.securesms.util.concurrent.ListenableFuture;
 import org.thoughtcrime.securesms.util.concurrent.SettableFuture;
 
@@ -47,9 +46,9 @@ public class SignalMapView extends LinearLayout {
     setOrientation(LinearLayout.VERTICAL);
     LayoutInflater.from(context).inflate(R.layout.signal_map_view, this, true);
 
-    this.mapView   = ViewUtil.findById(this, R.id.map_view);
-    this.imageView = ViewUtil.findById(this, R.id.image_view);
-    this.textView  = ViewUtil.findById(this, R.id.address_view);
+    this.mapView   = findViewById(R.id.map_view);
+    this.imageView = findViewById(R.id.image_view);
+    this.textView  = findViewById(R.id.address_view);
   }
 
   public ListenableFuture<Bitmap> display(final SignalPlace place) {

app/src/main/java/org/thoughtcrime/securesms/components/reminder/DefaultSmsReminder.java

@@ -1,46 +0,0 @@
-package org.thoughtcrime.securesms.components.reminder;
-
-import android.content.Context;
-import android.view.View;
-import android.view.View.OnClickListener;
-
-import androidx.annotation.NonNull;
-import androidx.fragment.app.Fragment;
-
-import org.thoughtcrime.securesms.R;
-import org.thoughtcrime.securesms.util.SmsUtil;
-import org.thoughtcrime.securesms.util.TextSecurePreferences;
-import org.thoughtcrime.securesms.util.Util;
-
-public class DefaultSmsReminder extends Reminder {
-
-  public DefaultSmsReminder(@NonNull Fragment fragment, short requestCode) {
-    super(fragment.getString(R.string.reminder_header_sms_default_title),
-          fragment.getString(R.string.reminder_header_sms_default_text));
-
-    final OnClickListener okListener = new OnClickListener() {
-      @Override
-      public void onClick(View v) {
-        TextSecurePreferences.setPromptedDefaultSmsProvider(fragment.requireContext(), true);
-        fragment.startActivityForResult(SmsUtil.getSmsRoleIntent(fragment.requireContext()), requestCode);
-      }
-    };
-    final OnClickListener dismissListener = new OnClickListener() {
-      @Override
-      public void onClick(View v) {
-        TextSecurePreferences.setPromptedDefaultSmsProvider(fragment.requireContext(), true);
-      }
-    };
-    setOkListener(okListener);
-    setDismissListener(dismissListener);
-  }
-
-  public static boolean isEligible(Context context) {
-    final boolean isDefault = Util.isDefaultSmsProvider(context);
-    if (isDefault) {
-      TextSecurePreferences.setPromptedDefaultSmsProvider(context, false);
-    }
-
-    return !isDefault && !TextSecurePreferences.hasPromptedDefaultSmsProvider(context);
-  }
-}

app/src/main/java/org/thoughtcrime/securesms/components/reminder/GroupsV1MigrationSuggestionsReminder.java

@@ -16,7 +16,7 @@ public class GroupsV1MigrationSuggestionsReminder extends Reminder {
   public GroupsV1MigrationSuggestionsReminder(@NonNull Context context, @NonNull List<RecipientId> suggestions) {
     super(null, context.getResources().getQuantityString(R.plurals.GroupsV1MigrationSuggestionsReminder_members_couldnt_be_added_to_the_new_group, suggestions.size(), suggestions.size()));
     addAction(new Action(context.getResources().getQuantityString(R.plurals.GroupsV1MigrationSuggestionsReminder_add_members, suggestions.size()), R.id.reminder_action_gv1_suggestion_add_members));
-    addAction(new Action(context.getResources().getString(R.string.GroupsV1MigrationSuggestionsReminder_not_now), R.id.reminder_action_gv1_suggestion_not_now));
+    addAction(new Action(context.getResources().getString(R.string.GroupsV1MigrationSuggestionsReminder_no_thanks), R.id.reminder_action_gv1_suggestion_no_thanks));
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/components/reminder/ReminderView.java

@@ -14,6 +14,7 @@ import android.widget.TextView;
 
 import androidx.annotation.IdRes;
 import androidx.annotation.Nullable;
+import androidx.core.content.ContextCompat;
 import androidx.recyclerview.widget.RecyclerView;
 
 import org.thoughtcrime.securesms.R;
@@ -78,6 +79,7 @@ public final class ReminderView extends FrameLayout {
     }
 
     text.setText(reminder.getText());
+    text.setTextColor(ContextCompat.getColor(getContext(), R.color.signal_button_primary_text));
 
     switch (reminder.getImportance()) {
       case NORMAL:
@@ -85,6 +87,7 @@ public final class ReminderView extends FrameLayout {
         break;
       case ERROR:
         container.setBackgroundResource(R.drawable.reminder_background_error);
+        text.setTextColor(ContextCompat.getColor(getContext(), R.color.signal_text_primary));
         break;
       case TERMINAL:
         container.setBackgroundResource(R.drawable.reminder_background_terminal);

app/src/main/java/org/thoughtcrime/securesms/components/reminder/ShareReminder.java

@@ -1,51 +0,0 @@
-package org.thoughtcrime.securesms.components.reminder;
-
-import android.content.Context;
-import android.content.Intent;
-import android.database.Cursor;
-import android.view.View;
-import android.view.View.OnClickListener;
-
-import androidx.annotation.NonNull;
-
-import org.thoughtcrime.securesms.InviteActivity;
-import org.thoughtcrime.securesms.R;
-import org.thoughtcrime.securesms.database.DatabaseFactory;
-import org.thoughtcrime.securesms.util.TextSecurePreferences;
-
-public class ShareReminder extends Reminder {
-
-  public ShareReminder(final @NonNull Context context) {
-    super(context.getString(R.string.reminder_header_share_title),
-          context.getString(R.string.reminder_header_share_text));
-
-    setDismissListener(new OnClickListener() {
-      @Override public void onClick(View v) {
-        TextSecurePreferences.setPromptedShare(context, true);
-      }
-    });
-
-    setOkListener(new OnClickListener() {
-      @Override public void onClick(View v) {
-        TextSecurePreferences.setPromptedShare(context, true);
-        context.startActivity(new Intent(context, InviteActivity.class));
-      }
-    });
-  }
-
-  public static boolean isEligible(final @NonNull Context context) {
-    if (!TextSecurePreferences.isPushRegistered(context) ||
-        TextSecurePreferences.hasPromptedShare(context))
-    {
-      return false;
-    }
-
-    Cursor cursor = null;
-    try {
-      cursor = DatabaseFactory.getThreadDatabase(context).getConversationList();
-      return cursor.getCount() >= 1;
-    } finally {
-      if (cursor != null) cursor.close();
-    }
-  }
-}

app/src/main/java/org/thoughtcrime/securesms/components/reminder/SystemSmsImportReminder.java

@@ -22,7 +22,7 @@ public class SystemSmsImportReminder extends Reminder {
       context.startService(intent);
 
       // TODO [greyson] Navigation
-      Intent nextIntent = new Intent(context, MainActivity.class);
+      Intent nextIntent = MainActivity.clearTop(context);
       Intent activityIntent = new Intent(context, DatabaseMigrationActivity.class);
       activityIntent.putExtra("next_intent", nextIntent);
       context.startActivity(activityIntent);

app/src/main/java/org/thoughtcrime/securesms/components/voice/VoiceNoteMediaController.java

@@ -5,6 +5,7 @@ import android.media.AudioManager;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
+import android.os.Looper;
 import android.os.Message;
 import android.os.RemoteException;
 import android.support.v4.media.MediaBrowserCompat;
@@ -208,17 +209,20 @@ public class VoiceNoteMediaController implements DefaultLifecycleObserver {
 
   private static class ProgressEventHandler extends Handler {
 
-    private final MediaControllerCompat                    mediaController;
-    private final MutableLiveData<VoiceNotePlaybackState>  voiceNotePlaybackState;
+    private final MediaControllerCompat                   mediaController;
+    private final MutableLiveData<VoiceNotePlaybackState> voiceNotePlaybackState;
 
     private ProgressEventHandler(@NonNull MediaControllerCompat mediaController,
-                                 @NonNull MutableLiveData<VoiceNotePlaybackState> voiceNotePlaybackState) {
+                                 @NonNull MutableLiveData<VoiceNotePlaybackState> voiceNotePlaybackState)
+    {
+      super(Looper.getMainLooper());
+
       this.mediaController        = mediaController;
       this.voiceNotePlaybackState = voiceNotePlaybackState;
     }
 
     @Override
-    public void handleMessage(Message msg) {
+    public void handleMessage(@NonNull Message msg) {
       MediaMetadataCompat mediaMetadataCompat = mediaController.getMetadata();
       if (isPlayerActive(mediaController.getPlaybackState()) &&
           mediaMetadataCompat != null                        &&

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/AudioOutputAdapter.java

@@ -64,7 +64,6 @@ final class AudioOutputAdapter extends RecyclerView.Adapter<AudioOutputAdapter.V
 
   static class ViewHolder extends RecyclerView.ViewHolder implements CompoundButton.OnCheckedChangeListener {
 
-    private final TextView          textView;
     private final RadioButton       radioButton;
     private final Consumer<Integer> onPressed;
 
@@ -72,16 +71,14 @@ final class AudioOutputAdapter extends RecyclerView.Adapter<AudioOutputAdapter.V
     public ViewHolder(@NonNull View itemView, @NonNull Consumer<Integer> onPressed) {
       super(itemView);
 
-      this.textView    = itemView.findViewById(R.id.text);
       this.radioButton = itemView.findViewById(R.id.radio);
       this.onPressed   = onPressed;
     }
 
     @CallSuper
     void bind(@NonNull WebRtcAudioOutput audioOutput, @Nullable WebRtcAudioOutput selected) {
-      textView.setText(audioOutput.getLabelRes());
-      textView.setCompoundDrawablesRelativeWithIntrinsicBounds(audioOutput.getIconRes(), 0, 0, 0);
-
+      radioButton.setText(audioOutput.getLabelRes());
+      radioButton.setCompoundDrawablesRelativeWithIntrinsicBounds(audioOutput.getIconRes(), 0, 0, 0);
       radioButton.setOnCheckedChangeListener(null);
       radioButton.setChecked(audioOutput == selected);
       radioButton.setOnCheckedChangeListener(this);

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/CallParticipantListUpdate.java

@@ -1,6 +1,7 @@
 package org.thoughtcrime.securesms.components.webrtc;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.VisibleForTesting;
 
 import com.annimon.stream.Collectors;
 import com.annimon.stream.Stream;
@@ -21,19 +22,19 @@ import java.util.Set;
  */
 public final class CallParticipantListUpdate {
 
-  private final Set<Holder> added;
-  private final Set<Holder> removed;
+  private final Set<Wrapper> added;
+  private final Set<Wrapper> removed;
 
-  CallParticipantListUpdate(@NonNull Set<Holder> added, @NonNull Set<Holder> removed) {
+  CallParticipantListUpdate(@NonNull Set<Wrapper> added, @NonNull Set<Wrapper> removed) {
     this.added   = added;
     this.removed = removed;
   }
 
-  public @NonNull Set<Holder> getAdded() {
+  public @NonNull Set<Wrapper> getAdded() {
     return added;
   }
 
-  public @NonNull Set<Holder> getRemoved() {
+  public @NonNull Set<Wrapper> getRemoved() {
     return removed;
   }
 
@@ -68,66 +69,47 @@ public final class CallParticipantListUpdate {
   public static @NonNull CallParticipantListUpdate computeDeltaUpdate(@NonNull List<CallParticipant> oldList,
                                                                       @NonNull List<CallParticipant> newList)
   {
-    Set<CallParticipantId>                primaries       = getPrimaries(oldList, newList);
-    Set<CallParticipantListUpdate.Holder> oldParticipants = Stream.of(oldList)
+    Set<CallParticipantListUpdate.Wrapper> oldParticipants = Stream.of(oldList)
                                                                   .filter(p -> p.getCallParticipantId().getDemuxId() != CallParticipantId.DEFAULT_ID)
-                                                                  .map(p -> createHolder(p, primaries.contains(p.getCallParticipantId())))
+                                                                  .map(CallParticipantListUpdate::createWrapper)
                                                                   .collect(Collectors.toSet());
-    Set<CallParticipantListUpdate.Holder> newParticipants = Stream.of(newList)
+    Set<CallParticipantListUpdate.Wrapper> newParticipants = Stream.of(newList)
                                                                   .filter(p -> p.getCallParticipantId().getDemuxId() != CallParticipantId.DEFAULT_ID)
-                                                                  .map(p -> createHolder(p, primaries.contains(p.getCallParticipantId())))
+                                                                  .map(CallParticipantListUpdate::createWrapper)
                                                                   .collect(Collectors.toSet());
-    Set<CallParticipantListUpdate.Holder> added           = SetUtil.difference(newParticipants, oldParticipants);
-    Set<CallParticipantListUpdate.Holder> removed         = SetUtil.difference(oldParticipants, newParticipants);
+    Set<CallParticipantListUpdate.Wrapper> added           = SetUtil.difference(newParticipants, oldParticipants);
+    Set<CallParticipantListUpdate.Wrapper> removed         = SetUtil.difference(oldParticipants, newParticipants);
 
     return new CallParticipantListUpdate(added, removed);
   }
 
-  static Holder createHolder(@NonNull CallParticipant callParticipant, boolean isPrimary) {
-    return new Holder(callParticipant.getCallParticipantId(), callParticipant.getRecipient(), isPrimary);
+  @VisibleForTesting
+  static Wrapper createWrapper(@NonNull CallParticipant callParticipant) {
+    return new Wrapper(callParticipant);
   }
 
-  private static @NonNull Set<CallParticipantId> getPrimaries(@NonNull List<CallParticipant> oldList, @NonNull List<CallParticipant> newList) {
-    return Stream.concat(Stream.of(oldList), Stream.of(newList))
-                 .map(CallParticipant::getCallParticipantId)
-                 .distinctBy(CallParticipantId::getRecipientId)
-                 .collect(Collectors.toSet());
-  }
+  static final class Wrapper {
+    private final CallParticipant callParticipant;
 
-  static final class Holder {
-    private final CallParticipantId callParticipantId;
-    private final Recipient         recipient;
-    private final boolean           isPrimary;
-
-    private Holder(@NonNull CallParticipantId callParticipantId, @NonNull Recipient recipient, boolean isPrimary) {
-      this.callParticipantId = callParticipantId;
-      this.recipient         = recipient;
-      this.isPrimary         = isPrimary;
+    private Wrapper(@NonNull CallParticipant callParticipant) {
+      this.callParticipant = callParticipant;
     }
 
-    public @NonNull Recipient getRecipient() {
-      return recipient;
-    }
-
-    /**
-     * Denotes whether this was the first detected instance of this recipient when generating an update. See
-     * {@link CallParticipantListUpdate#computeDeltaUpdate(List, List)}
-     */
-    public boolean isPrimary() {
-      return isPrimary;
+    public @NonNull CallParticipant getCallParticipant() {
+      return callParticipant;
     }
 
     @Override
     public boolean equals(Object o) {
       if (this == o) return true;
       if (o == null || getClass() != o.getClass()) return false;
-      Holder holder = (Holder) o;
-      return callParticipantId.equals(holder.callParticipantId);
+      Wrapper wrapper = (Wrapper) o;
+      return callParticipant.getCallParticipantId().equals(wrapper.callParticipant.getCallParticipantId());
     }
 
     @Override
     public int hashCode() {
-      return Objects.hash(callParticipantId);
+      return Objects.hash(callParticipant.getCallParticipantId());
     }
   }
 }

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/CallParticipantView.java

@@ -29,10 +29,12 @@ import org.thoughtcrime.securesms.mms.GlideApp;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
 import org.thoughtcrime.securesms.util.AvatarUtil;
+import org.thoughtcrime.securesms.util.Util;
 import org.thoughtcrime.securesms.util.ViewUtil;
 import org.webrtc.RendererCommon;
 
 import java.util.Objects;
+import java.util.concurrent.TimeUnit;
 
 /**
  * Encapsulates views needed to show a call participant including their
@@ -42,12 +44,15 @@ public class CallParticipantView extends ConstraintLayout {
 
   private static final FallbackPhotoProvider FALLBACK_PHOTO_PROVIDER = new FallbackPhotoProvider();
 
-  private static final int SMALL_AVATAR = ViewUtil.dpToPx(96);
-  private static final int LARGE_AVATAR = ViewUtil.dpToPx(112);
+  private static final long DELAY_SHOWING_MISSING_MEDIA_KEYS = TimeUnit.SECONDS.toMillis(5);
+  private static final int  SMALL_AVATAR                     = ViewUtil.dpToPx(96);
+  private static final int  LARGE_AVATAR                     = ViewUtil.dpToPx(112);
 
   private RecipientId recipientId;
   private boolean     infoMode;
+  private Runnable    missingMediaKeysUpdater;
 
+  private AppCompatImageView  backgroundAvatar;
   private AvatarImageView     avatar;
   private TextureViewRenderer renderer;
   private ImageView           pipAvatar;
@@ -74,14 +79,16 @@ public class CallParticipantView extends ConstraintLayout {
   @Override
   protected void onFinishInflate() {
     super.onFinishInflate();
-    avatar       = findViewById(R.id.call_participant_item_avatar);
-    pipAvatar    = findViewById(R.id.call_participant_item_pip_avatar);
-    renderer     = findViewById(R.id.call_participant_renderer);
-    audioMuted   = findViewById(R.id.call_participant_mic_muted);
-    infoOverlay  = findViewById(R.id.call_participant_info_overlay);
-    infoIcon     = findViewById(R.id.call_participant_info_icon);
-    infoMessage  = findViewById(R.id.call_participant_info_message);
-    infoMoreInfo = findViewById(R.id.call_participant_info_more_info);
+
+    backgroundAvatar = findViewById(R.id.call_participant_background_avatar);
+    avatar           = findViewById(R.id.call_participant_item_avatar);
+    pipAvatar        = findViewById(R.id.call_participant_item_pip_avatar);
+    renderer         = findViewById(R.id.call_participant_renderer);
+    audioMuted       = findViewById(R.id.call_participant_mic_muted);
+    infoOverlay      = findViewById(R.id.call_participant_info_overlay);
+    infoIcon         = findViewById(R.id.call_participant_info_icon);
+    infoMessage      = findViewById(R.id.call_participant_info_message);
+    infoMoreInfo     = findViewById(R.id.call_participant_info_more_info);
 
     avatar.setFallbackPhotoProvider(FALLBACK_PHOTO_PROVIDER);
     useLargeAvatar();
@@ -98,7 +105,7 @@ public class CallParticipantView extends ConstraintLayout {
   void setCallParticipant(@NonNull CallParticipant participant) {
     boolean participantChanged = recipientId == null || !recipientId.equals(participant.getRecipient().getId());
     recipientId = participant.getRecipient().getId();
-    infoMode    = participant.getRecipient().isBlocked() || !participant.isMediaKeysReceived();
+    infoMode    = participant.getRecipient().isBlocked() || isMissingMediaKeys(participant);
 
     if (infoMode) {
       renderer.setVisibility(View.GONE);
@@ -139,12 +146,34 @@ public class CallParticipantView extends ConstraintLayout {
 
     if (participantChanged || !Objects.equals(contactPhoto, participant.getRecipient().getContactPhoto())) {
       avatar.setAvatarUsingProfile(participant.getRecipient());
-      AvatarUtil.loadBlurredIconIntoViewBackground(participant.getRecipient(), this, true);
+      AvatarUtil.loadBlurredIconIntoImageView(participant.getRecipient(), backgroundAvatar);
       setPipAvatar(participant.getRecipient());
       contactPhoto = participant.getRecipient().getContactPhoto();
     }
   }
 
+  private boolean isMissingMediaKeys(@NonNull CallParticipant participant) {
+    if (missingMediaKeysUpdater != null) {
+      Util.cancelRunnableOnMain(missingMediaKeysUpdater);
+      missingMediaKeysUpdater = null;
+    }
+
+    if (!participant.isMediaKeysReceived()) {
+      long time = System.currentTimeMillis() - participant.getAddedToCallTime();
+      if (time > DELAY_SHOWING_MISSING_MEDIA_KEYS) {
+        return true;
+      } else {
+        missingMediaKeysUpdater = () -> {
+          if (recipientId.equals(participant.getRecipient().getId())) {
+            setCallParticipant(participant);
+          }
+        };
+        Util.runOnMainDelayed(missingMediaKeysUpdater, DELAY_SHOWING_MISSING_MEDIA_KEYS - time);
+      }
+    }
+    return false;
+  }
+
   void setRenderInPip(boolean shouldRenderInPip) {
     if (infoMode) {
       infoMessage.setVisibility(shouldRenderInPip ? View.GONE : View.VISIBLE);

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/CallParticipantsLayout.java

@@ -30,6 +30,7 @@ public class CallParticipantsLayout extends FlexboxLayout {
   private static final int CORNER_RADIUS                = ViewUtil.dpToPx(10);
 
   private List<CallParticipant> callParticipants = Collections.emptyList();
+  private CallParticipant       focusedParticipant = null;
   private boolean               shouldRenderInPip;
 
   public CallParticipantsLayout(@NonNull Context context) {
@@ -44,9 +45,10 @@ public class CallParticipantsLayout extends FlexboxLayout {
     super(context, attrs, defStyleAttr);
   }
 
-  void update(@NonNull List<CallParticipant> callParticipants, boolean shouldRenderInPip) {
-    this.callParticipants  = callParticipants;
-    this.shouldRenderInPip = shouldRenderInPip;
+  void update(@NonNull List<CallParticipant> callParticipants, @NonNull CallParticipant focusedParticipant, boolean shouldRenderInPip) {
+    this.callParticipants   = callParticipants;
+    this.focusedParticipant = focusedParticipant;
+    this.shouldRenderInPip  = shouldRenderInPip;
     updateLayout();
   }
 
@@ -55,7 +57,7 @@ public class CallParticipantsLayout extends FlexboxLayout {
 
     if (shouldRenderInPip && Util.hasItems(callParticipants)) {
       updateChildrenCount(1);
-      update(0, 1, callParticipants.get(0));
+      update(0, 1, focusedParticipant);
     } else {
       int count = callParticipants.size();
       updateChildrenCount(count);

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/CallParticipantsListUpdatePopupWindow.java

@@ -31,8 +31,10 @@ public class CallParticipantsListUpdatePopupWindow extends PopupWindow {
   private final AvatarImageView avatarImageView;
   private final TextView        descriptionTextView;
 
-  private final Set<CallParticipantListUpdate.Holder> pendingAdditions = new HashSet<>();
-  private final Set<CallParticipantListUpdate.Holder> pendingRemovals  = new HashSet<>();
+  private final Set<CallParticipantListUpdate.Wrapper> pendingAdditions = new HashSet<>();
+  private final Set<CallParticipantListUpdate.Wrapper> pendingRemovals  = new HashSet<>();
+
+  private boolean isEnabled = true;
 
   public CallParticipantsListUpdatePopupWindow(@NonNull ViewGroup parent) {
     super(LayoutInflater.from(parent.getContext()).inflate(R.layout.call_participant_list_update, parent, false),
@@ -59,6 +61,14 @@ public class CallParticipantsListUpdatePopupWindow extends PopupWindow {
     }
   }
 
+  public void setEnabled(boolean isEnabled) {
+    this.isEnabled = isEnabled;
+
+    if (!isEnabled) {
+      dismiss();
+    }
+  }
+
   private void showPending() {
     if (!pendingAdditions.isEmpty()) {
       showAdditions();
@@ -82,6 +92,10 @@ public class CallParticipantsListUpdatePopupWindow extends PopupWindow {
   }
 
   private void show() {
+    if (!isEnabled) {
+      return;
+    }
+
     showAtLocation(parent, Gravity.TOP | Gravity.START, 0, 0);
     measureChild();
     update();
@@ -98,18 +112,18 @@ public class CallParticipantsListUpdatePopupWindow extends PopupWindow {
     avatarImageView.setVisibility(recipient == null ? View.GONE : View.VISIBLE);
   }
 
-  private void setDescription(@NonNull Set<CallParticipantListUpdate.Holder> holders, boolean isAdded) {
-    if (holders.isEmpty()) {
+  private void setDescription(@NonNull Set<CallParticipantListUpdate.Wrapper> wrappers, boolean isAdded) {
+    if (wrappers.isEmpty()) {
       descriptionTextView.setText("");
     } else {
-      setDescriptionForRecipients(holders, isAdded);
+      setDescriptionForRecipients(wrappers, isAdded);
     }
   }
 
-  private void setDescriptionForRecipients(@NonNull Set<CallParticipantListUpdate.Holder> recipients, boolean isAdded) {
-    Iterator<CallParticipantListUpdate.Holder> iterator = recipients.iterator();
-    Context                                    context  = getContentView().getContext();
-    String                                     description;
+  private void setDescriptionForRecipients(@NonNull Set<CallParticipantListUpdate.Wrapper> recipients, boolean isAdded) {
+    Iterator<CallParticipantListUpdate.Wrapper> iterator = recipients.iterator();
+    Context                                     context  = getContentView().getContext();
+    String                                      description;
 
     switch (recipients.size()) {
       case 0:
@@ -130,22 +144,14 @@ public class CallParticipantsListUpdatePopupWindow extends PopupWindow {
     descriptionTextView.setText(description);
   }
 
-  private @NonNull Recipient getNextRecipient(@NonNull Iterator<CallParticipantListUpdate.Holder> holderIterator) {
-    return holderIterator.next().getRecipient();
+  private @NonNull Recipient getNextRecipient(@NonNull Iterator<CallParticipantListUpdate.Wrapper> wrapperIterator) {
+    return wrapperIterator.next().getCallParticipant().getRecipient();
   }
 
-  private @NonNull String getNextDisplayName(@NonNull Iterator<CallParticipantListUpdate.Holder> holderIterator) {
-    CallParticipantListUpdate.Holder holder    = holderIterator.next();
-    Recipient                        recipient = holder.getRecipient();
+  private @NonNull String getNextDisplayName(@NonNull Iterator<CallParticipantListUpdate.Wrapper> wrapperIterator) {
+    CallParticipantListUpdate.Wrapper wrapper   = wrapperIterator.next();
 
-    if (recipient.isSelf()) {
-      return getContentView().getContext().getString(R.string.CallParticipantsListUpdatePopupWindow__you_on_another_device);
-    } else if (holder.isPrimary()) {
-      return recipient.getDisplayName(getContentView().getContext());
-    } else {
-      return getContentView().getContext().getString(R.string.CallParticipantsListUpdatePopupWindow__s_on_another_device,
-                                                     recipient.getDisplayName(getContentView().getContext()));
-    }
+    return wrapper.getCallParticipant().getRecipientDisplayName(getContentView().getContext());
   }
 
   private static @StringRes int getOneMemberDescriptionResourceId(boolean isAdded) {

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/CallParticipantsState.java

@@ -6,12 +6,14 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.annimon.stream.ComparatorCompat;
+import com.annimon.stream.OptionalLong;
 import com.annimon.stream.Stream;
 
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.events.CallParticipant;
 import org.thoughtcrime.securesms.events.WebRtcViewModel;
 import org.thoughtcrime.securesms.ringrtc.CameraState;
+import org.thoughtcrime.securesms.service.webrtc.collections.ParticipantCollection;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -28,33 +30,36 @@ public final class CallParticipantsState {
 
   public static final CallParticipantsState STARTING_STATE  = new CallParticipantsState(WebRtcViewModel.State.CALL_DISCONNECTED,
                                                                                         WebRtcViewModel.GroupCallState.IDLE,
-                                                                                        Collections.emptyList(),
+                                                                                        new ParticipantCollection(SMALL_GROUP_MAX),
                                                                                         CallParticipant.createLocal(CameraState.UNKNOWN, new BroadcastVideoSink(null), false),
                                                                                         null,
                                                                                         WebRtcLocalRenderState.GONE,
                                                                                         false,
                                                                                         false,
-                                                                                        false);
+                                                                                        false,
+                                                                                        OptionalLong.empty());
 
   private final WebRtcViewModel.State          callState;
   private final WebRtcViewModel.GroupCallState groupCallState;
-  private final List<CallParticipant>          remoteParticipants;
+  private final ParticipantCollection          remoteParticipants;
   private final CallParticipant                localParticipant;
   private final CallParticipant                focusedParticipant;
   private final WebRtcLocalRenderState         localRenderState;
   private final boolean                        isInPipMode;
   private final boolean                        showVideoForOutgoing;
   private final boolean                        isViewingFocusedParticipant;
+  private final OptionalLong                   remoteDevicesCount;
 
   public CallParticipantsState(@NonNull WebRtcViewModel.State callState,
                                @NonNull WebRtcViewModel.GroupCallState groupCallState,
-                               @NonNull List<CallParticipant> remoteParticipants,
+                               @NonNull ParticipantCollection remoteParticipants,
                                @NonNull CallParticipant localParticipant,
                                @Nullable CallParticipant focusedParticipant,
                                @NonNull WebRtcLocalRenderState localRenderState,
                                boolean isInPipMode,
                                boolean showVideoForOutgoing,
-                               boolean isViewingFocusedParticipant)
+                               boolean isViewingFocusedParticipant,
+                               OptionalLong remoteDevicesCount)
   {
     this.callState                   = callState;
     this.groupCallState              = groupCallState;
@@ -65,6 +70,7 @@ public final class CallParticipantsState {
     this.isInPipMode                 = isInPipMode;
     this.showVideoForOutgoing        = showVideoForOutgoing;
     this.isViewingFocusedParticipant = isViewingFocusedParticipant;
+    this.remoteDevicesCount          = remoteDevicesCount;
   }
 
   public @NonNull WebRtcViewModel.State getCallState() {
@@ -76,26 +82,20 @@ public final class CallParticipantsState {
   }
 
   public @NonNull List<CallParticipant> getGridParticipants() {
-    if (getAllRemoteParticipants().size() > SMALL_GROUP_MAX) {
-      return getAllRemoteParticipants().subList(0, SMALL_GROUP_MAX);
-    } else {
-      return getAllRemoteParticipants();
-    }
+    return remoteParticipants.getGridParticipants();
   }
 
   public @NonNull List<CallParticipant> getListParticipants() {
     List<CallParticipant> listParticipants = new ArrayList<>();
 
     if (isViewingFocusedParticipant && getAllRemoteParticipants().size() > 1) {
-      listParticipants.addAll(getAllRemoteParticipants().subList(1, getAllRemoteParticipants().size()));
-    } else if (getAllRemoteParticipants().size() > SMALL_GROUP_MAX) {
-      listParticipants.addAll(getAllRemoteParticipants().subList(SMALL_GROUP_MAX, getAllRemoteParticipants().size()));
+      listParticipants.addAll(getAllRemoteParticipants());
+      listParticipants.remove(focusedParticipant);
     } else {
-      return Collections.emptyList();
+      listParticipants.addAll(remoteParticipants.getListParticipants());
     }
 
     listParticipants.add(CallParticipant.EMPTY);
-
     Collections.reverse(listParticipants);
 
     return listParticipants;
@@ -107,26 +107,26 @@ public final class CallParticipantsState {
         return context.getString(R.string.WebRtcCallView__no_one_else_is_here);
       case 1:
         if (callState == WebRtcViewModel.State.CALL_PRE_JOIN && groupCallState.isNotIdle()) {
-          return context.getString(R.string.WebRtcCallView__s_is_in_this_call, remoteParticipants.get(0).getRecipient().getShortDisplayName(context));
+          return context.getString(R.string.WebRtcCallView__s_is_in_this_call, remoteParticipants.get(0).getShortRecipientDisplayName(context));
         } else {
-          return remoteParticipants.get(0).getRecipient().getDisplayName(context);
+          return remoteParticipants.get(0).getRecipientDisplayName(context);
         }
       case 2:
         return context.getString(R.string.WebRtcCallView__s_and_s_are_in_this_call,
-                                 remoteParticipants.get(0).getRecipient().getShortDisplayName(context),
-                                 remoteParticipants.get(1).getRecipient().getShortDisplayName(context));
+                                 remoteParticipants.get(0).getShortRecipientDisplayName(context),
+                                 remoteParticipants.get(1).getShortRecipientDisplayName(context));
       default:
         int others = remoteParticipants.size() - 2;
         return context.getResources().getQuantityString(R.plurals.WebRtcCallView__s_s_and_d_others_are_in_this_call,
                                                         others,
-                                                        remoteParticipants.get(0).getRecipient().getShortDisplayName(context),
-                                                        remoteParticipants.get(1).getRecipient().getShortDisplayName(context),
+                                                        remoteParticipants.get(0).getShortRecipientDisplayName(context),
+                                                        remoteParticipants.get(1).getShortRecipientDisplayName(context),
                                                         others);
     }
   }
 
   public @NonNull List<CallParticipant> getAllRemoteParticipants() {
-    return remoteParticipants;
+    return remoteParticipants.getAllParticipants();
   }
 
   public @NonNull CallParticipant getLocalParticipant() {
@@ -153,6 +153,17 @@ public final class CallParticipantsState {
     return Stream.of(getAllRemoteParticipants()).anyMatch(p -> p.getVideoSink().needsNewRequestingSize());
   }
 
+  public @NonNull OptionalLong getRemoteDevicesCount() {
+    return remoteDevicesCount;
+  }
+
+  public @NonNull OptionalLong getParticipantCount() {
+    boolean includeSelf = groupCallState == WebRtcViewModel.GroupCallState.CONNECTED_AND_JOINED;
+
+    return remoteDevicesCount.map(l -> l + (includeSelf ? 1L : 0L))
+                             .or(() -> includeSelf ? OptionalLong.of(1L) : OptionalLong.empty());
+  }
+
   public static @NonNull CallParticipantsState update(@NonNull CallParticipantsState oldState,
                                                       @NonNull WebRtcViewModel webRtcViewModel,
                                                       boolean enableVideo)
@@ -170,7 +181,8 @@ public final class CallParticipantsState {
                                                                        webRtcViewModel.getGroupState().isNotIdle(),
                                                                        webRtcViewModel.getState(),
                                                                        webRtcViewModel.getRemoteParticipants().size(),
-                                                                       oldState.isViewingFocusedParticipant);
+                                                                       oldState.isViewingFocusedParticipant,
+                                                                       oldState.getLocalRenderState() == WebRtcLocalRenderState.EXPANDED);
 
     List<CallParticipant> participantsByLastSpoke = new ArrayList<>(webRtcViewModel.getRemoteParticipants());
     Collections.sort(participantsByLastSpoke, ComparatorCompat.reversed((p1, p2) -> Long.compare(p1.getLastSpoke(), p2.getLastSpoke())));
@@ -179,13 +191,14 @@ public final class CallParticipantsState {
 
     return new CallParticipantsState(webRtcViewModel.getState(),
                                      webRtcViewModel.getGroupState(),
-                                     webRtcViewModel.getRemoteParticipants(),
+                                     oldState.remoteParticipants.getNext(webRtcViewModel.getRemoteParticipants()),
                                      webRtcViewModel.getLocalParticipant(),
                                      focused,
                                      localRenderState,
                                      oldState.isInPipMode,
                                      newShowVideoForOutgoing,
-                                     oldState.isViewingFocusedParticipant);
+                                     oldState.isViewingFocusedParticipant,
+                                     webRtcViewModel.getRemoteDevicesCount());
   }
 
   public static @NonNull CallParticipantsState update(@NonNull CallParticipantsState oldState, boolean isInPip) {
@@ -195,7 +208,8 @@ public final class CallParticipantsState {
                                                                        oldState.getGroupCallState().isNotIdle(),
                                                                        oldState.callState,
                                                                        oldState.getAllRemoteParticipants().size(),
-                                                                       oldState.isViewingFocusedParticipant);
+                                                                       oldState.isViewingFocusedParticipant,
+                                                                       oldState.getLocalRenderState() == WebRtcLocalRenderState.EXPANDED);
 
     CallParticipant focused = oldState.remoteParticipants.isEmpty() ? null : oldState.remoteParticipants.get(0);
 
@@ -207,7 +221,30 @@ public final class CallParticipantsState {
                                      localRenderState,
                                      isInPip,
                                      oldState.showVideoForOutgoing,
-                                     oldState.isViewingFocusedParticipant);
+                                     oldState.isViewingFocusedParticipant,
+                                     oldState.remoteDevicesCount);
+  }
+
+  public static @NonNull CallParticipantsState setExpanded(@NonNull CallParticipantsState oldState, boolean expanded) {
+    WebRtcLocalRenderState localRenderState = determineLocalRenderMode(oldState.localParticipant,
+                                                                       oldState.isInPipMode,
+                                                                       oldState.showVideoForOutgoing,
+                                                                       oldState.getGroupCallState().isNotIdle(),
+                                                                       oldState.callState,
+                                                                       oldState.getAllRemoteParticipants().size(),
+                                                                       oldState.isViewingFocusedParticipant,
+                                                                       expanded);
+
+    return new CallParticipantsState(oldState.callState,
+                                     oldState.groupCallState,
+                                     oldState.remoteParticipants,
+                                     oldState.localParticipant,
+                                     oldState.focusedParticipant,
+                                     localRenderState,
+                                     oldState.isInPipMode,
+                                     oldState.showVideoForOutgoing,
+                                     oldState.isViewingFocusedParticipant,
+                                     oldState.remoteDevicesCount);
   }
 
   public static @NonNull CallParticipantsState update(@NonNull CallParticipantsState oldState, @NonNull SelectedPage selectedPage) {
@@ -219,7 +256,8 @@ public final class CallParticipantsState {
                                                                        oldState.getGroupCallState().isNotIdle(),
                                                                        oldState.callState,
                                                                        oldState.getAllRemoteParticipants().size(),
-                                                                       selectedPage == SelectedPage.FOCUSED);
+                                                                       selectedPage == SelectedPage.FOCUSED,
+                                                                       oldState.getLocalRenderState() == WebRtcLocalRenderState.EXPANDED);
 
     return new CallParticipantsState(oldState.callState,
                                      oldState.groupCallState,
@@ -229,7 +267,8 @@ public final class CallParticipantsState {
                                      localRenderState,
                                      oldState.isInPipMode,
                                      oldState.showVideoForOutgoing,
-                                     selectedPage == SelectedPage.FOCUSED);
+                                     selectedPage == SelectedPage.FOCUSED,
+                                     oldState.remoteDevicesCount);
   }
 
   private static @NonNull WebRtcLocalRenderState determineLocalRenderMode(@NonNull CallParticipant localParticipant,
@@ -238,12 +277,15 @@ public final class CallParticipantsState {
                                                                           boolean isNonIdleGroupCall,
                                                                           @NonNull WebRtcViewModel.State callState,
                                                                           int numberOfRemoteParticipants,
-                                                                          boolean isViewingFocusedParticipant)
+                                                                          boolean isViewingFocusedParticipant,
+                                                                          boolean isExpanded)
   {
     boolean                displayLocal     = (numberOfRemoteParticipants == 0 || !isInPip) && (isNonIdleGroupCall || localParticipant.isVideoEnabled());
     WebRtcLocalRenderState localRenderState = WebRtcLocalRenderState.GONE;
 
-    if (displayLocal || showVideoForOutgoing) {
+    if (isExpanded && (localParticipant.isVideoEnabled() || isNonIdleGroupCall)) {
+      return WebRtcLocalRenderState.EXPANDED;
+    } else if (displayLocal || showVideoForOutgoing) {
       if (callState == WebRtcViewModel.State.CALL_CONNECTED) {
         if (isViewingFocusedParticipant || numberOfRemoteParticipants > 1) {
           localRenderState = WebRtcLocalRenderState.SMALLER_RECTANGLE;

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/PictureInPictureExpansionHelper.java

@@ -0,0 +1,197 @@
+package org.thoughtcrime.securesms.components.webrtc;
+
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.MainThread;
+import androidx.annotation.NonNull;
+
+/**
+ * Helps manage the expansion and shrinking of the in-app pip.
+ */
+@MainThread
+final class PictureInPictureExpansionHelper {
+
+  private State state = State.IS_SHRUNKEN;
+
+  public boolean isExpandedOrExpanding() {
+    return state == State.IS_EXPANDED || state == State.IS_EXPANDING;
+  }
+
+  public boolean isShrunkenOrShrinking() {
+    return state == State.IS_SHRUNKEN || state == State.IS_SHRINKING;
+  }
+
+  public void expand(@NonNull View toExpand, @NonNull Callback callback) {
+    if (isExpandedOrExpanding()) {
+      return;
+    }
+
+    performExpandAnimation(toExpand, new Callback() {
+      @Override
+      public void onAnimationWillStart() {
+        state = State.IS_EXPANDING;
+        callback.onAnimationWillStart();
+      }
+
+      @Override
+      public void onPictureInPictureExpanded() {
+        callback.onPictureInPictureExpanded();
+      }
+
+      @Override
+      public void onPictureInPictureNotVisible() {
+        callback.onPictureInPictureNotVisible();
+      }
+
+      @Override
+      public void onAnimationHasFinished() {
+        state = State.IS_EXPANDED;
+        callback.onAnimationHasFinished();
+      }
+    });
+  }
+
+  public void shrink(@NonNull View toExpand, @NonNull Callback callback) {
+    if (isShrunkenOrShrinking()) {
+      return;
+    }
+
+    performShrinkAnimation(toExpand, new Callback() {
+      @Override
+      public void onAnimationWillStart() {
+        state = State.IS_SHRINKING;
+        callback.onAnimationWillStart();
+      }
+
+      @Override
+      public void onPictureInPictureExpanded() {
+        callback.onPictureInPictureExpanded();
+      }
+
+      @Override
+      public void onPictureInPictureNotVisible() {
+        callback.onPictureInPictureNotVisible();
+      }
+
+      @Override
+      public void onAnimationHasFinished() {
+        state = State.IS_SHRUNKEN;
+        callback.onAnimationHasFinished();
+      }
+    });
+  }
+
+  private void performExpandAnimation(@NonNull View target, @NonNull Callback callback) {
+    ViewGroup parent = (ViewGroup) target.getParent();
+
+    float x      = target.getX();
+    float y      = target.getY();
+    float scaleX = parent.getMeasuredWidth() / (float) target.getMeasuredWidth();
+    float scaleY = parent.getMeasuredHeight() / (float) target.getMeasuredHeight();
+    float scale  = Math.max(scaleX, scaleY);
+
+    callback.onAnimationWillStart();
+
+    target.animate()
+          .setDuration(200)
+          .x((parent.getMeasuredWidth() - target.getMeasuredWidth()) / 2f)
+          .y((parent.getMeasuredHeight() - target.getMeasuredHeight()) / 2f)
+          .scaleX(scale)
+          .scaleY(scale)
+          .withEndAction(() -> {
+            callback.onPictureInPictureExpanded();
+            target.animate()
+                  .setDuration(100)
+                  .alpha(0f)
+                  .withEndAction(() -> {
+                    callback.onPictureInPictureNotVisible();
+
+                    target.setX(x);
+                    target.setY(y);
+                    target.setScaleX(0f);
+                    target.setScaleY(0f);
+                    target.setAlpha(1f);
+
+                    target.animate()
+                          .setDuration(200)
+                          .scaleX(1f)
+                          .scaleY(1f)
+                          .withEndAction(callback::onAnimationHasFinished);
+                  });
+          });
+  }
+
+  private void performShrinkAnimation(@NonNull View target, @NonNull Callback callback) {
+    ViewGroup parent = (ViewGroup) target.getParent();
+
+    float x      = target.getX();
+    float y      = target.getY();
+    float scaleX = parent.getMeasuredWidth() / (float) target.getMeasuredWidth();
+    float scaleY = parent.getMeasuredHeight() / (float) target.getMeasuredHeight();
+    float scale  = Math.max(scaleX, scaleY);
+
+    callback.onAnimationWillStart();
+
+    target.animate()
+          .setDuration(200)
+          .scaleX(0f)
+          .scaleY(0f)
+          .withEndAction(() -> {
+            target.setX((parent.getMeasuredWidth() - target.getMeasuredWidth()) / 2f);
+            target.setY((parent.getMeasuredHeight() - target.getMeasuredHeight()) / 2f);
+            target.setAlpha(0f);
+            target.setScaleX(scale);
+            target.setScaleY(scale);
+
+            callback.onPictureInPictureNotVisible();
+
+            target.animate()
+                  .setDuration(100)
+                  .alpha(1f)
+                  .withEndAction(() -> {
+                    callback.onPictureInPictureExpanded();
+
+                    target.animate()
+                          .scaleX(1f)
+                          .scaleY(1f)
+                          .x(x)
+                          .y(y)
+                          .withEndAction(callback::onAnimationHasFinished);
+                  });
+            });
+  }
+
+  enum State {
+    IS_EXPANDING,
+    IS_EXPANDED,
+    IS_SHRINKING,
+    IS_SHRUNKEN
+  }
+
+  public interface Callback {
+    /**
+     * Called when an animation (shrink or expand) will begin. This happens before any animation
+     * is executed.
+     */
+    void onAnimationWillStart();
+
+    /**
+     * Called when the PiP is covering the whole screen. This is when any staging / teardown of the
+     * large local renderer should occur.
+     */
+    void onPictureInPictureExpanded();
+
+    /**
+     * Called when the PiP is not visible on the screen anymore. This is when any staging / teardown
+     * of the pip should occur.
+     */
+    void onPictureInPictureNotVisible();
+
+    /**
+     * Called when the animation is complete. Useful for e.g. adjusting the pip's final location to
+     * make sure it is respecting the screen space available.
+     */
+    void onAnimationHasFinished();
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/PictureInPictureGestureHelper.java

@@ -222,8 +222,9 @@ public class PictureInPictureGestureHelper extends GestureDetector.SimpleOnGestu
 
   @Override
   public boolean onSingleTapUp(MotionEvent e) {
-    child.performClick();
+    isDragging = false;
 
+    child.performClick();
     return true;
   }
 

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcAudioOutputToggleButton.java

@@ -113,7 +113,7 @@ public class WebRtcAudioOutputToggleButton extends AppCompatImageView {
     rv.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false));
     rv.setAdapter(adapter);
 
-    picker = new AlertDialog.Builder(getContext())
+    picker = new AlertDialog.Builder(getContext(), R.style.Theme_Signal_AlertDialog_Dark_Cornered)
                             .setTitle(R.string.WebRtcAudioOutputToggle__audio_output)
                             .setView(rv)
                             .setCancelable(true)

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcCallParticipantsPage.java

@@ -11,34 +11,42 @@ import java.util.Objects;
 class WebRtcCallParticipantsPage {
 
   private final List<CallParticipant> callParticipants;
+  private final CallParticipant       focusedParticipant;
   private final boolean               isSpeaker;
   private final boolean               isRenderInPip;
   
   static WebRtcCallParticipantsPage forMultipleParticipants(@NonNull List<CallParticipant> callParticipants,
+                                                            @NonNull CallParticipant focusedParticipant,
                                                             boolean isRenderInPip) 
   {
-    return new WebRtcCallParticipantsPage(callParticipants, false, isRenderInPip);
+    return new WebRtcCallParticipantsPage(callParticipants, focusedParticipant, false, isRenderInPip);
   }
   
   static WebRtcCallParticipantsPage forSingleParticipant(@NonNull CallParticipant singleParticipant,
                                                          boolean isRenderInPip)
   {
-    return new WebRtcCallParticipantsPage(Collections.singletonList(singleParticipant), true, isRenderInPip);
+    return new WebRtcCallParticipantsPage(Collections.singletonList(singleParticipant), singleParticipant, true, isRenderInPip);
   }
 
   private WebRtcCallParticipantsPage(@NonNull List<CallParticipant> callParticipants,
+                                     @NonNull CallParticipant       focusedParticipant,
                                      boolean isSpeaker,
                                      boolean isRenderInPip) 
   {
-    this.callParticipants = callParticipants;
-    this.isSpeaker        = isSpeaker;
-    this.isRenderInPip    = isRenderInPip;
+    this.callParticipants   = callParticipants;
+    this.focusedParticipant = focusedParticipant;
+    this.isSpeaker          = isSpeaker;
+    this.isRenderInPip      = isRenderInPip;
   }
 
   public @NonNull List<CallParticipant> getCallParticipants() {
     return callParticipants;
   }
 
+  public @NonNull CallParticipant getFocusedParticipant() {
+    return focusedParticipant;
+  }
+
   public boolean isRenderInPip() {
     return isRenderInPip;
   }
@@ -54,11 +62,12 @@ class WebRtcCallParticipantsPage {
     WebRtcCallParticipantsPage that = (WebRtcCallParticipantsPage) o;
     return isSpeaker == that.isSpeaker &&
         isRenderInPip == that.isRenderInPip &&
+        focusedParticipant.equals(that.focusedParticipant) &&
         callParticipants.equals(that.callParticipants);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(callParticipants, isSpeaker);
+    return Objects.hash(callParticipants, isSpeaker, focusedParticipant, isRenderInPip);
   }
 }

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcCallParticipantsPagerAdapter.java

@@ -84,7 +84,7 @@ class WebRtcCallParticipantsPagerAdapter extends ListAdapter<WebRtcCallParticipa
 
     @Override
     void bind(WebRtcCallParticipantsPage page) {
-      callParticipantsLayout.update(page.getCallParticipants(), page.isRenderInPip());
+      callParticipantsLayout.update(page.getCallParticipants(), page.getFocusedParticipant(), page.isRenderInPip());
     }
   }
 

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcCallParticipantsRecyclerAdapter.java

@@ -60,6 +60,7 @@ class WebRtcCallParticipantsRecyclerAdapter extends ListAdapter<CallParticipant,
     @Override
     void bind(@NonNull CallParticipant callParticipant) {
       callParticipantView.setCallParticipant(callParticipant);
+      callParticipantView.setRenderInPip(true);
     }
   }
 

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcCallView.java

@@ -1,14 +1,24 @@
 package org.thoughtcrime.securesms.components.webrtc;
 
+import android.animation.Animator;
+import android.animation.AnimatorInflater;
+import android.animation.AnimatorSet;
+import android.animation.ValueAnimator;
 import android.content.Context;
 import android.graphics.ColorMatrix;
 import android.graphics.ColorMatrixColorFilter;
+import android.graphics.Rect;
 import android.util.AttributeSet;
-import android.view.LayoutInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.ViewPropertyAnimator;
+import android.view.animation.AlphaAnimation;
 import android.view.animation.Animation;
+import android.view.animation.AnimationSet;
+import android.view.animation.AnimationUtils;
+import android.view.animation.ScaleAnimation;
+import android.view.animation.TranslateAnimation;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.TextView;
@@ -47,6 +57,7 @@ import org.thoughtcrime.securesms.ringrtc.CameraState;
 import org.thoughtcrime.securesms.util.BlurTransformation;
 import org.thoughtcrime.securesms.util.SetUtil;
 import org.thoughtcrime.securesms.util.ViewUtil;
+import org.thoughtcrime.securesms.util.views.Stub;
 import org.webrtc.RendererCommon;
 import org.whispersystems.signalservice.api.messages.calls.HangupMessage;
 
@@ -93,11 +104,16 @@ public class WebRtcCallView extends FrameLayout {
   private Toolbar                       toolbar;
   private MaterialButton                startCall;
   private TextView                      participantCount;
+  private Stub<FrameLayout>             groupCallSpeakerHint;
+  private Stub<View>                    groupCallFullStub;
+  private View                          errorButton;
   private int                           pagerBottomMarginDp;
   private boolean                       controlsVisible = true;
 
   private WebRtcCallParticipantsPagerAdapter    pagerAdapter;
   private WebRtcCallParticipantsRecyclerAdapter recyclerAdapter;
+  private PictureInPictureExpansionHelper       pictureInPictureExpansionHelper;
+
 
   private final Set<View> incomingCallViews    = new HashSet<>();
   private final Set<View> topViews             = new HashSet<>();
@@ -116,7 +132,7 @@ public class WebRtcCallView extends FrameLayout {
   public WebRtcCallView(@NonNull Context context, @Nullable AttributeSet attrs) {
     super(context, attrs);
 
-    LayoutInflater.from(context).inflate(R.layout.webrtc_call_view, this, true);
+    inflate(context, R.layout.webrtc_call_view, this);
   }
 
   @SuppressWarnings("CodeBlock2Expr")
@@ -148,12 +164,14 @@ public class WebRtcCallView extends FrameLayout {
     callParticipantsRecycler      = findViewById(R.id.call_screen_participants_recycler);
     toolbar                       = findViewById(R.id.call_screen_toolbar);
     startCall                     = findViewById(R.id.call_screen_start_call_start_call);
+    errorButton                   = findViewById(R.id.call_screen_error_cancel);
+    groupCallSpeakerHint          = new Stub<>(findViewById(R.id.call_screen_group_call_speaker_hint));
+    groupCallFullStub             = new Stub<>(findViewById(R.id.group_call_call_full_view));
 
     View      topGradient            = findViewById(R.id.call_screen_header_gradient);
     View      decline                = findViewById(R.id.call_screen_decline_call);
     View      answerLabel            = findViewById(R.id.call_screen_answer_call_label);
     View      declineLabel           = findViewById(R.id.call_screen_decline_call_label);
-    Guideline statusBarGuideline     = findViewById(R.id.call_screen_status_bar_guideline);
     View      cancelStartCall        = findViewById(R.id.call_screen_start_call_cancel);
 
     callParticipantsPager.setPageTransformer(new MarginPageTransformer(ViewUtil.dpToPx(4)));
@@ -205,7 +223,14 @@ public class WebRtcCallView extends FrameLayout {
     answer.setOnClickListener(v -> runIfNonNull(controlsListener, ControlsListener::onAcceptCallPressed));
     answerWithAudio.setOnClickListener(v -> runIfNonNull(controlsListener, ControlsListener::onAcceptCallWithVoiceOnlyPressed));
 
-    pictureInPictureGestureHelper = PictureInPictureGestureHelper.applyTo(smallLocalRenderFrame);
+    pictureInPictureGestureHelper   = PictureInPictureGestureHelper.applyTo(smallLocalRenderFrame);
+    pictureInPictureExpansionHelper = new PictureInPictureExpansionHelper();
+
+    smallLocalRenderFrame.setOnClickListener(v -> {
+      if (controlsListener != null) {
+        controlsListener.onLocalPictureInPictureClicked();
+      }
+    });
 
     startCall.setOnClickListener(v -> {
       if (controlsListener != null) {
@@ -220,8 +245,11 @@ public class WebRtcCallView extends FrameLayout {
     largeLocalRenderNoVideoAvatar.setAlpha(0.6f);
     largeLocalRenderNoVideoAvatar.setColorFilter(new ColorMatrixColorFilter(greyScaleMatrix));
 
-    int statusBarHeight = ViewUtil.getStatusBarHeight(this);
-    statusBarGuideline.setGuidelineBegin(statusBarHeight);
+    errorButton.setOnClickListener(v -> {
+      if (controlsListener != null) {
+        controlsListener.onCancelStartCall();
+      }
+    });
   }
 
   @Override
@@ -233,6 +261,26 @@ public class WebRtcCallView extends FrameLayout {
     }
   }
 
+  @Override
+  protected boolean fitSystemWindows(Rect insets) {
+    Guideline statusBarGuideline     = findViewById(R.id.call_screen_status_bar_guideline);
+    Guideline navigationBarGuideline = findViewById(R.id.call_screen_navigation_bar_guideline);
+
+    statusBarGuideline.setGuidelineBegin(insets.top);
+    navigationBarGuideline.setGuidelineEnd(insets.bottom);
+
+    return true;
+  }
+
+  @Override
+  public void onWindowSystemUiVisibilityChanged(int visible) {
+    if ((visible & SYSTEM_UI_FLAG_HIDE_NAVIGATION) == 0) {
+      pictureInPictureGestureHelper.setVerticalBoundaries(toolbar.getBottom(), videoToggle.getTop());
+    } else {
+      pictureInPictureGestureHelper.clearVerticalBoundaries();
+    }
+  }
+
   @Override
   protected void onDetachedFromWindow() {
     super.onDetachedFromWindow();
@@ -251,26 +299,28 @@ public class WebRtcCallView extends FrameLayout {
     List<WebRtcCallParticipantsPage> pages = new ArrayList<>(2);
 
     if (!state.getGridParticipants().isEmpty()) {
-      pages.add(WebRtcCallParticipantsPage.forMultipleParticipants(state.getGridParticipants(), state.isInPipMode()));
+      pages.add(WebRtcCallParticipantsPage.forMultipleParticipants(state.getGridParticipants(), state.getFocusedParticipant(), state.isInPipMode()));
     }
 
     if (state.getFocusedParticipant() != null && state.getAllRemoteParticipants().size() > 1) {
       pages.add(WebRtcCallParticipantsPage.forSingleParticipant(state.getFocusedParticipant(), state.isInPipMode()));
     }
 
-    if (state.getGroupCallState().isConnected()) {
+    if ((state.getGroupCallState().isNotIdle() && state.getRemoteDevicesCount().orElse(0) > 0) || state.getGroupCallState().isConnected()) {
       recipientName.setText(state.getRemoteParticipantsDescription(getContext()));
+    } else if (state.getGroupCallState().isNotIdle()) {
+      recipientName.setText(getContext().getString(R.string.WebRtcCallView__s_group_call, Recipient.resolved(recipientId).getDisplayName(getContext())));
     }
 
     if (state.getGroupCallState().isNotIdle() && participantCount != null) {
-      boolean includeSelf = state.getGroupCallState() == WebRtcViewModel.GroupCallState.CONNECTED_AND_JOINED;
-
-      participantCount.setText(String.valueOf(state.getAllRemoteParticipants().size() + (includeSelf ? 1 : 0)));
+      participantCount.setText(state.getParticipantCount()
+                                    .mapToObj(String::valueOf).orElse("\u2014"));
+      participantCount.setEnabled(state.getParticipantCount().isPresent());
     }
 
     pagerAdapter.submitList(pages);
     recyclerAdapter.submitList(state.getListParticipants());
-    updateLocalCallParticipant(state.getLocalRenderState(), state.getLocalParticipant());
+    updateLocalCallParticipant(state.getLocalRenderState(), state.getLocalParticipant(), state.getFocusedParticipant());
 
     if (state.isLargeVideoGroup() && !state.isInPipMode()) {
       layoutParticipantsForLargeCount();
@@ -279,7 +329,7 @@ public class WebRtcCallView extends FrameLayout {
     }
   }
 
-  public void updateLocalCallParticipant(@NonNull WebRtcLocalRenderState state, @NonNull CallParticipant localCallParticipant) {
+  public void updateLocalCallParticipant(@NonNull WebRtcLocalRenderState state, @NonNull CallParticipant localCallParticipant, @NonNull CallParticipant focusedParticipant) {
     smallLocalRender.setMirror(localCallParticipant.getCameraDirection() == CameraState.Direction.FRONT);
     largeLocalRender.setMirror(localCallParticipant.getCameraDirection() == CameraState.Direction.FRONT);
 
@@ -290,9 +340,18 @@ public class WebRtcCallView extends FrameLayout {
       largeLocalRender.init(localCallParticipant.getVideoSink().getEglBase());
     }
 
-    smallLocalRender.setCallParticipant(localCallParticipant);
-    smallLocalRender.setRenderInPip(true);
     videoToggle.setChecked(localCallParticipant.isVideoEnabled(), false);
+    smallLocalRender.setRenderInPip(true);
+
+    if (state == WebRtcLocalRenderState.EXPANDED) {
+      expandPip(localCallParticipant, focusedParticipant);
+      return;
+    } else if (state == WebRtcLocalRenderState.SMALL_RECTANGLE && pictureInPictureExpansionHelper.isExpandedOrExpanding()) {
+      shrinkPip(localCallParticipant);
+      return;
+    } else {
+      smallLocalRender.setCallParticipant(localCallParticipant);
+    }
 
     switch (state) {
       case GONE:
@@ -350,7 +409,6 @@ public class WebRtcCallView extends FrameLayout {
     recipientId = recipient.getId();
 
     if (recipient.isGroup()) {
-      recipientName.setText(getContext().getString(R.string.WebRtcCallView__s_group_call, recipient.getDisplayName(getContext())));
       if (toolbar.getMenu().findItem(R.id.menu_group_call_participants_list) == null) {
         toolbar.inflateMenu(R.menu.group_call);
 
@@ -417,7 +475,19 @@ public class WebRtcCallView extends FrameLayout {
       visibleViewSet.add(startCallControls);
 
       startCall.setText(webRtcControls.getStartCallButtonText());
-      startCall.setEnabled(true);
+      startCall.setEnabled(webRtcControls.isStartCallEnabled());
+    }
+
+    if (webRtcControls.displayErrorControls()) {
+      visibleViewSet.add(footerGradient);
+      visibleViewSet.add(errorButton);
+    }
+
+    if (webRtcControls.displayGroupCallFull()) {
+      groupCallFullStub.get().setVisibility(View.VISIBLE);
+      ((TextView) groupCallFullStub.get().findViewById(R.id.group_call_call_full_message)).setText(webRtcControls.getGroupCallFullMessage(getContext()));
+    } else if (groupCallFullStub.resolved()) {
+      groupCallFullStub.get().setVisibility(View.GONE);
     }
 
     MenuItem item = toolbar.getMenu().findItem(R.id.menu_group_call_participants_list);
@@ -489,6 +559,10 @@ public class WebRtcCallView extends FrameLayout {
       }
     } else {
       cancelFadeOut();
+
+      if (controlsListener != null) {
+        controlsListener.showSystemUI();
+      }
     }
 
     controls = webRtcControls;
@@ -503,6 +577,64 @@ public class WebRtcCallView extends FrameLayout {
     return videoToggle;
   }
 
+  public void showSpeakerViewHint() {
+    groupCallSpeakerHint.get().setVisibility(View.VISIBLE);
+  }
+
+  public void hideSpeakerViewHint() {
+    if (groupCallSpeakerHint.resolved()) {
+      groupCallSpeakerHint.get().setVisibility(View.GONE);
+    }
+  }
+
+  private void expandPip(@NonNull CallParticipant localCallParticipant, @NonNull CallParticipant focusedParticipant) {
+    pictureInPictureExpansionHelper.expand(smallLocalRenderFrame, new PictureInPictureExpansionHelper.Callback() {
+      @Override
+      public void onAnimationWillStart() {
+        largeLocalRender.attachBroadcastVideoSink(localCallParticipant.getVideoSink());
+      }
+
+      @Override
+      public void onPictureInPictureExpanded() {
+        largeLocalRenderFrame.setVisibility(View.VISIBLE);
+      }
+
+      @Override
+      public void onPictureInPictureNotVisible() {
+        smallLocalRender.setCallParticipant(focusedParticipant);
+      }
+
+      @Override
+      public void onAnimationHasFinished() {
+        pictureInPictureGestureHelper.adjustPip();
+      }
+    });
+  }
+
+  private void shrinkPip(@NonNull CallParticipant localCallParticipant) {
+    pictureInPictureExpansionHelper.shrink(smallLocalRenderFrame, new PictureInPictureExpansionHelper.Callback() {
+      @Override
+      public void onAnimationWillStart() {
+      }
+
+      @Override
+      public void onPictureInPictureExpanded() {
+        largeLocalRenderFrame.setVisibility(View.GONE);
+        largeLocalRender.attachBroadcastVideoSink(null);
+      }
+
+      @Override
+      public void onPictureInPictureNotVisible() {
+        smallLocalRender.setCallParticipant(localCallParticipant);
+      }
+
+      @Override
+      public void onAnimationHasFinished() {
+        pictureInPictureGestureHelper.adjustPip();
+      }
+    });
+  }
+
   private void animatePipToLargeRectangle() {
     ResizeAnimation animation = new ResizeAnimation(smallLocalRenderFrame, ViewUtil.dpToPx(90), ViewUtil.dpToPx(160));
     animation.setDuration(PIP_RESIZE_DURATION);
@@ -545,12 +677,10 @@ public class WebRtcCallView extends FrameLayout {
   private void fadeOutControls() {
     fadeControls(ConstraintSet.GONE);
     controlsListener.onControlsFadeOut();
-    pictureInPictureGestureHelper.clearVerticalBoundaries();
   }
 
   private void fadeInControls() {
     fadeControls(ConstraintSet.VISIBLE);
-    pictureInPictureGestureHelper.setVerticalBoundaries(toolbar.getBottom(), videoToggle.getTop());
 
     scheduleFadeOut();
   }
@@ -594,6 +724,15 @@ public class WebRtcCallView extends FrameLayout {
                                                 .setDuration(TRANSITION_DURATION_MILLIS);
 
     TransitionManager.endTransitions(parent);
+
+    if (controlsListener != null) {
+      if (controlsVisible) {
+        controlsListener.showSystemUI();
+      } else {
+        controlsListener.hideSystemUI();
+      }
+    }
+
     TransitionManager.beginDelayedTransition(parent, transition);
 
     ConstraintSet constraintSet = new ConstraintSet();
@@ -678,6 +817,8 @@ public class WebRtcCallView extends FrameLayout {
     void onStartCall(boolean isVideoCall);
     void onCancelStartCall();
     void onControlsFadeOut();
+    void showSystemUI();
+    void hideSystemUI();
     void onAudioOutputChanged(@NonNull WebRtcAudioOutput audioOutput);
     void onVideoChanged(boolean isVideoEnabled);
     void onMicChanged(boolean isMicEnabled);
@@ -688,5 +829,6 @@ public class WebRtcCallView extends FrameLayout {
     void onAcceptCallPressed();
     void onShowParticipantsList();
     void onPageChanged(@NonNull CallParticipantsState.SelectedPage page);
+    void onLocalPictureInPictureClicked();
   }
 }

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcCallViewModel.java

@@ -5,6 +5,7 @@ import android.os.Looper;
 
 import androidx.annotation.MainThread;
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.Transformations;
@@ -17,6 +18,9 @@ import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.events.CallParticipant;
 import org.thoughtcrime.securesms.events.CallParticipantId;
 import org.thoughtcrime.securesms.events.WebRtcViewModel;
+import org.thoughtcrime.securesms.groups.LiveGroup;
+import org.thoughtcrime.securesms.groups.ui.GroupMemberEntry;
+import org.thoughtcrime.securesms.keyvalue.SignalStore;
 import org.thoughtcrime.securesms.recipients.LiveRecipient;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
@@ -30,17 +34,20 @@ import java.util.List;
 
 public class WebRtcCallViewModel extends ViewModel {
 
-  private final MutableLiveData<Boolean>                   microphoneEnabled         = new MutableLiveData<>(true);
-  private final MutableLiveData<Boolean>                   isInPipMode               = new MutableLiveData<>(false);
-  private final MutableLiveData<WebRtcControls>            webRtcControls            = new MutableLiveData<>(WebRtcControls.NONE);
-  private final LiveData<WebRtcControls>                   realWebRtcControls        = LiveDataUtil.combineLatest(isInPipMode, webRtcControls, this::getRealWebRtcControls);
-  private final SingleLiveEvent<Event>                     events                    = new SingleLiveEvent<Event>();
-  private final MutableLiveData<Long>                      elapsed                   = new MutableLiveData<>(-1L);
-  private final MutableLiveData<LiveRecipient>             liveRecipient             = new MutableLiveData<>(Recipient.UNKNOWN.live());
-  private final MutableLiveData<CallParticipantsState>     participantsState         = new MutableLiveData<>(CallParticipantsState.STARTING_STATE);
-  private final SingleLiveEvent<CallParticipantListUpdate> callParticipantListUpdate = new SingleLiveEvent<>();
-  private final MutableLiveData<Collection<RecipientId>>   identityChangedRecipients = new MutableLiveData<>(Collections.emptyList());
-  private final LiveData<SafetyNumberChangeEvent>          safetyNumberChangeEvent   = LiveDataUtil.combineLatest(isInPipMode, identityChangedRecipients, SafetyNumberChangeEvent::new);
+  private final MutableLiveData<Boolean>                    microphoneEnabled         = new MutableLiveData<>(true);
+  private final MutableLiveData<Boolean>                    isInPipMode               = new MutableLiveData<>(false);
+  private final MutableLiveData<WebRtcControls>             webRtcControls            = new MutableLiveData<>(WebRtcControls.NONE);
+  private final LiveData<WebRtcControls>                    realWebRtcControls        = LiveDataUtil.combineLatest(isInPipMode, webRtcControls, this::getRealWebRtcControls);
+  private final SingleLiveEvent<Event>                      events                    = new SingleLiveEvent<Event>();
+  private final MutableLiveData<Long>                       elapsed                   = new MutableLiveData<>(-1L);
+  private final MutableLiveData<LiveRecipient>              liveRecipient             = new MutableLiveData<>(Recipient.UNKNOWN.live());
+  private final MutableLiveData<CallParticipantsState>      participantsState         = new MutableLiveData<>(CallParticipantsState.STARTING_STATE);
+  private final SingleLiveEvent<CallParticipantListUpdate>  callParticipantListUpdate = new SingleLiveEvent<>();
+  private final MutableLiveData<Collection<RecipientId>>    identityChangedRecipients = new MutableLiveData<>(Collections.emptyList());
+  private final LiveData<SafetyNumberChangeEvent>           safetyNumberChangeEvent   = LiveDataUtil.combineLatest(isInPipMode, identityChangedRecipients, SafetyNumberChangeEvent::new);
+  private final LiveData<Recipient>                         groupRecipient            = LiveDataUtil.filter(Transformations.switchMap(liveRecipient, LiveRecipient::getLiveData), Recipient::isActiveGroup);
+  private final LiveData<List<GroupMemberEntry.FullMember>> groupMembers              = LiveDataUtil.skip(Transformations.switchMap(groupRecipient, r -> Transformations.distinctUntilChanged(new LiveGroup(r.requireGroupId()).getFullMembers())), 1);
+  private final LiveData<Boolean>                           shouldShowSpeakerHint     = Transformations.map(participantsState, this::shouldShowSpeakerHint);
 
   private boolean               canDisplayTooltipIfNeeded = true;
   private boolean               hasEnabledLocalVideo      = false;
@@ -49,8 +56,8 @@ public class WebRtcCallViewModel extends ViewModel {
   private boolean               answerWithVideoAvailable  = false;
   private Runnable              elapsedTimeRunnable       = this::handleTick;
   private boolean               canEnterPipMode           = false;
-  private List<CallParticipant> previousParticipantsList  = Collections.emptyList();
-  private boolean               callingStarted            = false;
+  private List<CallParticipant> previousParticipantsList = Collections.emptyList();
+  private boolean               callStarting             = false;
 
   private final WebRtcCallRepository repository = new WebRtcCallRepository(ApplicationDependencies.getApplication());
 
@@ -90,6 +97,14 @@ public class WebRtcCallViewModel extends ViewModel {
     return safetyNumberChangeEvent;
   }
 
+  public LiveData<List<GroupMemberEntry.FullMember>> getGroupMembers() {
+    return groupMembers;
+  }
+
+  public LiveData<Boolean> shouldShowSpeakerHint() {
+    return shouldShowSpeakerHint;
+  }
+
   public boolean canEnterPipMode() {
     return canEnterPipMode;
   }
@@ -98,8 +113,8 @@ public class WebRtcCallViewModel extends ViewModel {
     return answerWithVideoAvailable;
   }
 
-  public boolean isCallingStarted() {
-    return callingStarted;
+  public boolean isCallStarting() {
+    return callStarting;
   }
 
   @MainThread
@@ -112,17 +127,34 @@ public class WebRtcCallViewModel extends ViewModel {
 
   @MainThread
   public void setIsViewingFocusedParticipant(@NonNull CallParticipantsState.SelectedPage page) {
+    if (page == CallParticipantsState.SelectedPage.FOCUSED) {
+      SignalStore.tooltips().markGroupCallSpeakerViewSeen();
+    }
+
     //noinspection ConstantConditions
     participantsState.setValue(CallParticipantsState.update(participantsState.getValue(), page));
   }
 
+  public void onLocalPictureInPictureClicked() {
+    CallParticipantsState state = participantsState.getValue();
+    if (state.getGroupCallState() != WebRtcViewModel.GroupCallState.IDLE) {
+      return;
+    }
+
+    participantsState.setValue(CallParticipantsState.setExpanded(participantsState.getValue(),
+                                                                 state.getLocalRenderState() != WebRtcLocalRenderState.EXPANDED));
+  }
+
   public void onDismissedVideoTooltip() {
     canDisplayTooltipIfNeeded = false;
   }
 
   @MainThread
   public void updateFromWebRtcViewModel(@NonNull WebRtcViewModel webRtcViewModel, boolean enableVideo) {
-    canEnterPipMode = webRtcViewModel.getState() != WebRtcViewModel.State.CALL_PRE_JOIN;
+    canEnterPipMode = !webRtcViewModel.getState().isPreJoinOrNetworkUnavailable();
+    if (callStarting && webRtcViewModel.getState().isPassedPreJoin()) {
+      callStarting = false;
+    }
 
     CallParticipant localParticipant = webRtcViewModel.getLocalParticipant();
 
@@ -150,7 +182,9 @@ public class WebRtcCallViewModel extends ViewModel {
                          localParticipant.isMoreThanOneCameraAvailable(),
                          webRtcViewModel.isBluetoothAvailable(),
                          Util.hasItems(webRtcViewModel.getRemoteParticipants()),
-                         repository.getAudioOutput());
+                         repository.getAudioOutput(),
+                         webRtcViewModel.getRemoteDevicesCount().orElse(0),
+                         webRtcViewModel.getParticipantLimit());
 
     if (webRtcViewModel.getState() == WebRtcViewModel.State.CALL_CONNECTED && callConnectedTime == -1) {
       callConnectedTime = webRtcViewModel.getCallConnectedTime();
@@ -185,7 +219,9 @@ public class WebRtcCallViewModel extends ViewModel {
                                     boolean isMoreThanOneCameraAvailable,
                                     boolean isBluetoothAvailable,
                                     boolean hasAtLeastOneRemote,
-                                    @NonNull WebRtcAudioOutput audioOutput)
+                                    @NonNull WebRtcAudioOutput audioOutput,
+                                    long remoteDevicesCount,
+                                    @Nullable Long participantLimit)
   {
     final WebRtcControls.CallState callState;
 
@@ -209,6 +245,9 @@ public class WebRtcCallViewModel extends ViewModel {
       case CALL_DISCONNECTED:
         callState = WebRtcControls.CallState.ENDING;
         break;
+      case NETWORK_FAILURE:
+        callState = WebRtcControls.CallState.ERROR;
+        break;
       default:
         callState = WebRtcControls.CallState.ONGOING;
     }
@@ -221,7 +260,8 @@ public class WebRtcCallViewModel extends ViewModel {
         break;
       case CONNECTING:
       case RECONNECTING:
-        groupCallState = WebRtcControls.GroupCallState.CONNECTING;
+        groupCallState = (participantLimit == null || remoteDevicesCount < participantLimit) ? WebRtcControls.GroupCallState.CONNECTING
+                                                                                             : WebRtcControls.GroupCallState.FULL;
         break;
       case CONNECTED:
       case CONNECTED_AND_JOINING:
@@ -241,13 +281,21 @@ public class WebRtcCallViewModel extends ViewModel {
                                                hasAtLeastOneRemote,
                                                callState,
                                                groupCallState,
-                                               audioOutput));
+                                               audioOutput,
+                                               participantLimit));
   }
 
   private @NonNull WebRtcControls getRealWebRtcControls(boolean isInPipMode, @NonNull WebRtcControls controls) {
     return isInPipMode ? WebRtcControls.PIP : controls;
   }
 
+  private boolean shouldShowSpeakerHint(@NonNull CallParticipantsState state) {
+    return !state.isInPipMode()                        &&
+           state.getRemoteDevicesCount().orElse(0) > 1 &&
+           state.getGroupCallState().isConnected()     &&
+           !SignalStore.tooltips().hasSeenGroupCallSpeakerView();
+  }
+
   private void startTimer() {
     cancelTimer();
 
@@ -277,7 +325,7 @@ public class WebRtcCallViewModel extends ViewModel {
   }
 
   public void startCall(boolean isVideoCall) {
-    callingStarted = true;
+    callStarting = true;
     Recipient recipient = getRecipient().get();
     if (recipient.isGroup()) {
       repository.getIdentityRecords(recipient, identityRecords -> {

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcControls.java

@@ -1,6 +1,9 @@
 package org.thoughtcrime.securesms.components.webrtc;
 
+import android.content.Context;
+
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.StringRes;
 
 import org.thoughtcrime.securesms.R;
@@ -8,7 +11,7 @@ import org.thoughtcrime.securesms.R;
 public final class WebRtcControls {
 
   public static final WebRtcControls NONE = new WebRtcControls();
-  public static final WebRtcControls PIP  = new WebRtcControls(false, false, false, false, true, false, CallState.NONE, GroupCallState.NONE, WebRtcAudioOutput.HANDSET);
+  public static final WebRtcControls PIP  = new WebRtcControls(false, false, false, false, true, false, CallState.NONE, GroupCallState.NONE, WebRtcAudioOutput.HANDSET, null);
 
   private final boolean           isRemoteVideoEnabled;
   private final boolean           isLocalVideoEnabled;
@@ -19,9 +22,10 @@ public final class WebRtcControls {
   private final CallState         callState;
   private final GroupCallState    groupCallState;
   private final WebRtcAudioOutput audioOutput;
+  private final Long              participantLimit;
 
   private WebRtcControls() {
-    this(false, false, false, false, false, false, CallState.NONE, GroupCallState.NONE, WebRtcAudioOutput.HANDSET);
+    this(false, false, false, false, false, false, CallState.NONE, GroupCallState.NONE, WebRtcAudioOutput.HANDSET, null);
   }
 
   WebRtcControls(boolean isLocalVideoEnabled,
@@ -32,7 +36,8 @@ public final class WebRtcControls {
                  boolean hasAtLeastOneRemote,
                  @NonNull CallState callState,
                  @NonNull GroupCallState groupCallState,
-                 @NonNull WebRtcAudioOutput audioOutput)
+                 @NonNull WebRtcAudioOutput audioOutput,
+                 @Nullable Long participantLimit)
   {
     this.isLocalVideoEnabled          = isLocalVideoEnabled;
     this.isRemoteVideoEnabled         = isRemoteVideoEnabled;
@@ -43,6 +48,11 @@ public final class WebRtcControls {
     this.callState                    = callState;
     this.groupCallState               = groupCallState;
     this.audioOutput                  = audioOutput;
+    this.participantLimit             = participantLimit;
+  }
+
+  boolean displayErrorControls() {
+    return isError();
   }
 
   boolean displayStartCallControls() {
@@ -50,12 +60,31 @@ public final class WebRtcControls {
   }
 
   @StringRes int getStartCallButtonText() {
-    if (isGroupCall() && hasAtLeastOneRemote) {
-      return R.string.WebRtcCallView__join_call;
+    if (isGroupCall()) {
+      if (groupCallState == GroupCallState.FULL) {
+        return R.string.WebRtcCallView__call_is_full;
+      } else if (hasAtLeastOneRemote) {
+        return R.string.WebRtcCallView__join_call;
+      }
     }
     return R.string.WebRtcCallView__start_call;
   }
 
+  boolean isStartCallEnabled() {
+    return groupCallState != GroupCallState.FULL;
+  }
+
+  boolean displayGroupCallFull() {
+    return groupCallState == GroupCallState.FULL;
+  }
+
+  @NonNull String getGroupCallFullMessage(@NonNull Context context) {
+    if (participantLimit != null) {
+      return context.getString(R.string.WebRtcCallView__the_maximum_number_of_d_participants_has_been_Reached_for_this_call, participantLimit);
+    }
+    return "";
+  }
+
   boolean displayGroupMembersButton() {
     return groupCallState.isAtLeast(GroupCallState.CONNECTING);
   }
@@ -120,6 +149,10 @@ public final class WebRtcControls {
     return audioOutput;
   }
 
+  private boolean isError() {
+    return callState == CallState.ERROR;
+  }
+
   private boolean isPreJoin() {
     return callState == CallState.PRE_JOIN;
   }
@@ -142,6 +175,7 @@ public final class WebRtcControls {
 
   public enum CallState {
     NONE,
+    ERROR,
     PRE_JOIN,
     INCOMING,
     OUTGOING,
@@ -158,6 +192,7 @@ public final class WebRtcControls {
     DISCONNECTED,
     RECONNECTING,
     CONNECTING,
+    FULL,
     CONNECTED;
 
     boolean isAtLeast(@SuppressWarnings("SameParameterValue") @NonNull GroupCallState other) {

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcLocalRenderState.java

@@ -5,5 +5,6 @@ public enum WebRtcLocalRenderState {
   SMALL_RECTANGLE,
   SMALLER_RECTANGLE,
   LARGE,
-  LARGE_NO_VIDEO
+  LARGE_NO_VIDEO,
+  EXPANDED
 }

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/participantslist/CallParticipantViewState.java

@@ -25,8 +25,7 @@ public final class CallParticipantViewState extends RecipientMappingModel<CallPa
 
   @Override
   public @NonNull String getName(@NonNull Context context) {
-    return callParticipant.getRecipient().isSelf() ? context.getString(R.string.GroupMembersDialog_you)
-                                                   : super.getName(context);
+    return callParticipant.getRecipientDisplayName(context);
   }
 
   public int getVideoMutedVisibility() {
@@ -36,4 +35,16 @@ public final class CallParticipantViewState extends RecipientMappingModel<CallPa
   public int getAudioMutedVisibility() {
     return callParticipant.isMicrophoneEnabled() ? View.GONE : View.VISIBLE;
   }
+
+  @Override
+  public boolean areItemsTheSame(@NonNull CallParticipantViewState newItem) {
+    return callParticipant.getCallParticipantId().equals(newItem.callParticipant.getCallParticipantId());
+  }
+
+  @Override
+  public boolean areContentsTheSame(@NonNull CallParticipantViewState newItem) {
+    return super.areContentsTheSame(newItem)                                            &&
+           callParticipant.isVideoEnabled() == newItem.callParticipant.isVideoEnabled() &&
+           callParticipant.isMicrophoneEnabled() == newItem.callParticipant.isMicrophoneEnabled();
+  }
 }

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/participantslist/CallParticipantsListDialog.java

@@ -9,11 +9,13 @@ import android.view.ViewGroup;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
 import androidx.lifecycle.ViewModelProviders;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.annimon.stream.OptionalLong;
 import com.google.android.material.bottomsheet.BottomSheetDialogFragment;
 
 import org.thoughtcrime.securesms.R;
@@ -38,6 +40,13 @@ public class CallParticipantsListDialog extends BottomSheetDialogFragment {
     fragment.show(manager, BottomSheetUtil.STANDARD_BOTTOM_SHEET_FRAGMENT_TAG);
   }
 
+  public static void dismiss(@NonNull FragmentManager manager) {
+    Fragment fragment = manager.findFragmentByTag(BottomSheetUtil.STANDARD_BOTTOM_SHEET_FRAGMENT_TAG);
+    if (fragment instanceof CallParticipantsListDialog) {
+      ((CallParticipantsListDialog) fragment).dismissAllowingStateLoss();
+    }
+  }
+
   @Override
   public void show(@NonNull FragmentManager manager, @Nullable String tag) {
     BottomSheetUtil.show(manager, tag, this);
@@ -80,19 +89,21 @@ public class CallParticipantsListDialog extends BottomSheetDialogFragment {
   private void updateList(@NonNull CallParticipantsState callParticipantsState) {
     List<MappingModel<?>> items = new ArrayList<>();
 
-    boolean includeSelf = callParticipantsState.getGroupCallState() == WebRtcViewModel.GroupCallState.CONNECTED_AND_JOINED;
+    boolean      includeSelf = callParticipantsState.getGroupCallState() == WebRtcViewModel.GroupCallState.CONNECTED_AND_JOINED;
+    OptionalLong headerCount = callParticipantsState.getParticipantCount();
 
-    items.add(new CallParticipantsListHeader(callParticipantsState.getAllRemoteParticipants().size() + (includeSelf ? 1 : 0)));
+    headerCount.executeIfPresent(count -> {
+      items.add(new CallParticipantsListHeader((int) count));
 
-    if (includeSelf) {
-      items.add(new CallParticipantViewState(callParticipantsState.getLocalParticipant()));
-    }
+      if (includeSelf) {
+        items.add(new CallParticipantViewState(callParticipantsState.getLocalParticipant()));
+      }
 
-    for (CallParticipant callParticipant : callParticipantsState.getAllRemoteParticipants()) {
-      items.add(new CallParticipantViewState(callParticipant));
-    }
+      for (CallParticipant callParticipant : callParticipantsState.getAllRemoteParticipants()) {
+        items.add(new CallParticipantViewState(callParticipant));
+      }
+    });
 
     adapter.submitList(items);
   }
-
 }

app/src/main/java/org/thoughtcrime/securesms/contacts/sync/DirectoryHelper.java

@@ -43,7 +43,6 @@ import org.thoughtcrime.securesms.recipients.RecipientId;
 import org.thoughtcrime.securesms.registration.RegistrationUtil;
 import org.thoughtcrime.securesms.sms.IncomingJoinedMessage;
 import org.thoughtcrime.securesms.storage.StorageSyncHelper;
-import org.thoughtcrime.securesms.tracing.Trace;
 import org.thoughtcrime.securesms.util.ProfileUtil;
 import org.thoughtcrime.securesms.util.SetUtil;
 import org.thoughtcrime.securesms.util.Stopwatch;
@@ -73,7 +72,6 @@ import java.util.concurrent.TimeoutException;
 /**
  * Manages all the stuff around determining if a user is registered or not.
  */
-@Trace
 public class DirectoryHelper {
 
   private static final String TAG = Log.tag(DirectoryHelper.class);
@@ -254,6 +252,8 @@ public class DirectoryHelper {
 
     stopwatch.split("handle-unlisted");
 
+    Set<RecipientId> preExistingRegisteredUsers = new HashSet<>(recipientDatabase.getRegistered());
+
     recipientDatabase.bulkUpdatedRegisteredStatus(uuidMap, inactiveIds);
 
     stopwatch.split("update-registered");
@@ -267,14 +267,13 @@ public class DirectoryHelper {
     }
 
     if (TextSecurePreferences.hasSuccessfullyRetrievedDirectory(context) && notifyOfNewUsers) {
-      Set<RecipientId>  existingSignalIds = new HashSet<>(recipientDatabase.getRegistered());
-      Set<RecipientId>  existingSystemIds = new HashSet<>(recipientDatabase.getSystemContacts());
-      Set<RecipientId>  newlyActiveIds    = new HashSet<>(activeIds);
+      Set<RecipientId>  systemContacts                = new HashSet<>(recipientDatabase.getSystemContacts());
+      Set<RecipientId>  newlyRegisteredSystemContacts = new HashSet<>(activeIds);
 
-      newlyActiveIds.removeAll(existingSignalIds);
-      newlyActiveIds.retainAll(existingSystemIds);
+      newlyRegisteredSystemContacts.removeAll(preExistingRegisteredUsers);
+      newlyRegisteredSystemContacts.retainAll(systemContacts);
 
-      notifyNewUsers(context, newlyActiveIds);
+      notifyNewUsers(context, newlyRegisteredSystemContacts);
     } else {
       TextSecurePreferences.setHasSuccessfullyRetrievedDirectory(context, true);
     }
@@ -297,6 +296,11 @@ public class DirectoryHelper {
                                              boolean removeMissing,
                                              @NonNull Map<String, String> rewrites)
   {
+    if (!Permissions.hasAll(context, Manifest.permission.READ_CONTACTS, Manifest.permission.WRITE_CONTACTS)) {
+      Log.w(TAG, "[updateContactsDatabase] No contact permissions. Skipping.");
+      return;
+    }
+
     AccountHolder account = getOrCreateSystemAccount(context);
 
     if (account == null) {
@@ -398,8 +402,11 @@ public class DirectoryHelper {
 
     for (RecipientId newUser: newUsers) {
       Recipient recipient = Recipient.resolved(newUser);
-      if (!SessionUtil.hasSession(context, recipient.getId()) && !recipient.isSelf()) {
-        IncomingJoinedMessage  message      = new IncomingJoinedMessage(newUser);
+      if (!SessionUtil.hasSession(context, recipient.getId()) &&
+          !recipient.isSelf()                                 &&
+          recipient.hasAUserSetDisplayName(context))
+      {
+        IncomingJoinedMessage  message      = new IncomingJoinedMessage(recipient.getId());
         Optional<InsertResult> insertResult = DatabaseFactory.getSmsDatabase(context).insertMessageInbox(message);
 
         if (insertResult.isPresent()) {

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationActivity.java

@@ -243,7 +243,6 @@ import org.thoughtcrime.securesms.stickers.StickerLocator;
 import org.thoughtcrime.securesms.stickers.StickerManagementActivity;
 import org.thoughtcrime.securesms.stickers.StickerPackInstallEvent;
 import org.thoughtcrime.securesms.stickers.StickerSearchRepository;
-import org.thoughtcrime.securesms.tracing.Trace;
 import org.thoughtcrime.securesms.util.AsynchronousCallback;
 import org.thoughtcrime.securesms.util.Base64;
 import org.thoughtcrime.securesms.util.BitmapUtil;
@@ -302,7 +301,6 @@ import static org.whispersystems.libsignal.SessionCipher.SESSION_LOCK;
  * @author Moxie Marlinspike
  *
  */
-@Trace
 @SuppressLint("StaticFieldLeak")
 public class ConversationActivity extends PassphraseRequiredActivity
     implements ConversationFragment.ConversationFragmentListener,
@@ -374,6 +372,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
   private   View                     cancelJoinRequest;
   private   Stub<View>               mentionsSuggestions;
   private   MaterialButton           joinGroupCallButton;
+  private   boolean                  callingTooltipShown;
 
   private LinkPreviewViewModel         linkPreviewViewModel;
   private ConversationSearchViewModel  searchViewModel;
@@ -408,7 +407,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
     if (ConversationIntents.isInvalid(getIntent())) {
       Log.w(TAG, "[onCreate] Missing recipientId!");
       // TODO [greyson] Navigation
-      startActivity(new Intent(this, MainActivity.class));
+      startActivity(MainActivity.clearTop(this));
       finish();
       return;
     }
@@ -487,7 +486,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
     if (ConversationIntents.isInvalid(intent)) {
       Log.w(TAG, "[onNewIntent] Missing recipientId!");
       // TODO [greyson] Navigation
-      startActivity(new Intent(this, MainActivity.class));
+      startActivity(MainActivity.clearTop(this));
       finish();
       return;
     }
@@ -537,6 +536,10 @@ public class ConversationActivity extends PassphraseRequiredActivity
                              .startChain(new RequestGroupV2InfoJob(groupId))
                              .then(new GroupV2UpdateSelfProfileKeyJob(groupId))
                              .enqueue();
+
+      if (viewModel.getArgs().isFirstTimeInSelfCreatedGroup()) {
+        groupViewModel.inviteFriendsOneTimeIfJustSelfInGroup(getSupportFragmentManager(), groupId);
+      }
     }
 
     if (groupCallViewModel != null) {
@@ -830,6 +833,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
         if (groupCallViewModel != null && Boolean.TRUE.equals(groupCallViewModel.hasActiveGroupCall().getValue())) {
           hideMenuItem(menu, R.id.menu_video_secure);
         }
+        showGroupCallingTooltip();
       }
 
       inflater.inflate(R.menu.conversation_group_options, menu);
@@ -1085,6 +1089,8 @@ public class ConversationActivity extends PassphraseRequiredActivity
       return;
     }
 
+    final long thread = this.threadId;
+
     ExpirationDialog.show(this, recipient.get().getExpireMessages(),
       expirationTime ->
         SimpleTask.run(
@@ -1100,7 +1106,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
             } else {
               DatabaseFactory.getRecipientDatabase(ConversationActivity.this).setExpireMessages(recipient.getId(), expirationTime);
               OutgoingExpirationUpdateMessage outgoingMessage = new OutgoingExpirationUpdateMessage(getRecipient(), System.currentTimeMillis(), expirationTime * 1000L);
-              MessageSender.send(ConversationActivity.this, outgoingMessage, threadId, false, null);
+              MessageSender.send(ConversationActivity.this, outgoingMessage, thread, false, null);
             }
             return GroupChangeResult.SUCCESS;
           },
@@ -1780,8 +1786,8 @@ public class ConversationActivity extends PassphraseRequiredActivity
       reminderView.get().setOnActionClickListener(actionId -> {
         if (actionId == R.id.reminder_action_gv1_suggestion_add_members) {
           GroupsV1MigrationSuggestionsDialog.show(this, recipient.get().requireGroupId().requireV2(), gv1MigrationSuggestions);
-        } else if (actionId == R.id.reminder_action_gv1_suggestion_not_now) {
-          groupViewModel.onSuggestedMembersBannerDismissed(recipient.get().requireGroupId());
+        } else if (actionId == R.id.reminder_action_gv1_suggestion_no_thanks) {
+          groupViewModel.onSuggestedMembersBannerDismissed(recipient.get().requireGroupId(), gv1MigrationSuggestions);
         }
       });
       reminderView.get().setOnDismissListener(() -> {
@@ -1880,31 +1886,31 @@ public class ConversationActivity extends PassphraseRequiredActivity
 
   private void initializeViews() {
     titleView                = findViewById(R.id.conversation_title_view);
-    buttonToggle             = ViewUtil.findById(this, R.id.button_toggle);
-    sendButton               = ViewUtil.findById(this, R.id.send_button);
-    attachButton             = ViewUtil.findById(this, R.id.attach_button);
-    composeText              = ViewUtil.findById(this, R.id.embedded_text_editor);
-    charactersLeft           = ViewUtil.findById(this, R.id.space_left);
+    buttonToggle             = findViewById(R.id.button_toggle);
+    sendButton               = findViewById(R.id.send_button);
+    attachButton             = findViewById(R.id.attach_button);
+    composeText              = findViewById(R.id.embedded_text_editor);
+    charactersLeft           = findViewById(R.id.space_left);
     emojiDrawerStub          = ViewUtil.findStubById(this, R.id.emoji_drawer_stub);
     attachmentKeyboardStub   = ViewUtil.findStubById(this, R.id.attachment_keyboard_stub);
-    unblockButton            = ViewUtil.findById(this, R.id.unblock_button);
-    makeDefaultSmsButton     = ViewUtil.findById(this, R.id.make_default_sms_button);
-    registerButton           = ViewUtil.findById(this, R.id.register_button);
-    container                = ViewUtil.findById(this, R.id.layout_container);
+    unblockButton            = findViewById(R.id.unblock_button);
+    makeDefaultSmsButton     = findViewById(R.id.make_default_sms_button);
+    registerButton           = findViewById(R.id.register_button);
+    container                = findViewById(R.id.layout_container);
     reminderView             = ViewUtil.findStubById(this, R.id.reminder_stub);
     unverifiedBannerView     = ViewUtil.findStubById(this, R.id.unverified_banner_stub);
     reviewBanner             = ViewUtil.findStubById(this, R.id.review_banner_stub);
-    quickAttachmentToggle    = ViewUtil.findById(this, R.id.quick_attachment_toggle);
-    inlineAttachmentToggle   = ViewUtil.findById(this, R.id.inline_attachment_container);
-    inputPanel               = ViewUtil.findById(this, R.id.bottom_panel);
-    panelParent              = ViewUtil.findById(this, R.id.conversation_activity_panel_parent);
-    searchNav                = ViewUtil.findById(this, R.id.conversation_search_nav);
-    messageRequestBottomView = ViewUtil.findById(this, R.id.conversation_activity_message_request_bottom_bar);
-    reactionOverlay          = ViewUtil.findById(this, R.id.conversation_reaction_scrubber);
+    quickAttachmentToggle    = findViewById(R.id.quick_attachment_toggle);
+    inlineAttachmentToggle   = findViewById(R.id.inline_attachment_container);
+    inputPanel               = findViewById(R.id.bottom_panel);
+    panelParent              = findViewById(R.id.conversation_activity_panel_parent);
+    searchNav                = findViewById(R.id.conversation_search_nav);
+    messageRequestBottomView = findViewById(R.id.conversation_activity_message_request_bottom_bar);
+    reactionOverlay          = findViewById(R.id.conversation_reaction_scrubber);
     mentionsSuggestions      = ViewUtil.findStubById(this, R.id.conversation_mention_suggestions_stub);
 
-    ImageButton quickCameraToggle      = ViewUtil.findById(this, R.id.quick_camera_toggle);
-    ImageButton inlineAttachmentButton = ViewUtil.findById(this, R.id.inline_attachment_button);
+    ImageButton quickCameraToggle      = findViewById(R.id.quick_camera_toggle);
+    ImageButton inlineAttachmentButton = findViewById(R.id.inline_attachment_button);
 
     noLongerMemberBanner   = findViewById(R.id.conversation_no_longer_member_banner);
     requestingMemberBanner = findViewById(R.id.conversation_requesting_banner);
@@ -1980,7 +1986,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
 
     if (isInBubble()) {
       supportActionBar.setHomeAsUpIndicator(ContextCompat.getDrawable(this, R.drawable.ic_notification));
-      toolbar.setNavigationOnClickListener(unused -> startActivity(new Intent(Intent.ACTION_MAIN).setClass(this, MainActivity.class)));
+      toolbar.setNavigationOnClickListener(unused -> startActivity(MainActivity.clearTop(this)));
     }
   }
 
@@ -2134,7 +2140,29 @@ public class ConversationActivity extends PassphraseRequiredActivity
       joinGroupCallButton.setVisibility(hasActiveCall ? View.VISIBLE : View.GONE);
     });
 
-    groupCallViewModel.canJoinGroupCall().observe(this, canJoin -> joinGroupCallButton.setText(canJoin ? R.string.ConversationActivity_join : R.string.ConversationActivity_full));
+    groupCallViewModel.groupCallHasCapacity().observe(this, hasCapacity -> joinGroupCallButton.setText(hasCapacity ? R.string.ConversationActivity_join : R.string.ConversationActivity_full));
+  }
+
+  private void showGroupCallingTooltip() {
+    if (!FeatureFlags.groupCalling() || !SignalStore.tooltips().shouldShowGroupCallingTooltip() || callingTooltipShown) {
+      return;
+    }
+
+    View anchor = findViewById(R.id.menu_video_secure);
+    if (anchor == null) {
+      Log.w(TAG, "Video Call tooltip anchor is null. Skipping tooltip...");
+      return;
+    }
+
+    callingTooltipShown = true;
+
+    SignalStore.tooltips().markGroupCallSpeakerViewSeen();
+    TooltipPopup.forTarget(anchor)
+                .setBackgroundTint(ContextCompat.getColor(this, R.color.signal_accent_green))
+                .setTextColor(getResources().getColor(R.color.core_white))
+                .setText(R.string.ConversationActivity__tap_here_to_start_a_group_call)
+                .setOnDismissListener(() -> SignalStore.tooltips().markGroupCallingTooltipSeen())
+                .show(TooltipPopup.POSITION_BELOW);
   }
 
   private void showStickerIntroductionTooltip() {
@@ -2651,13 +2679,14 @@ public class ConversationActivity extends PassphraseRequiredActivity
   }
 
   private void sendMediaMessage(@NonNull MediaSendActivityResult result) {
+    long                 thread        = this.threadId;
     long                 expiresIn     = recipient.get().getExpireMessages() * 1000L;
     QuoteModel           quote         = result.isViewOnce() ? null : inputPanel.getQuote().orNull();
     List<Mention>        mentions      = new ArrayList<>(result.getMentions());
     OutgoingMediaMessage message       = new OutgoingMediaMessage(recipient.get(), new SlideDeck(), result.getBody(), System.currentTimeMillis(), -1, expiresIn, result.isViewOnce(), distributionType, quote, Collections.emptyList(), Collections.emptyList(), mentions);
     OutgoingMediaMessage secureMessage = new OutgoingSecureMediaMessage(message);
 
-    ApplicationDependencies.getTypingStatusSender().onTypingStopped(threadId);
+    ApplicationDependencies.getTypingStatusSender().onTypingStopped(thread);
 
     inputPanel.clearQuote();
     attachmentManager.clear(glideRequests, false);
@@ -2666,7 +2695,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
     long id = fragment.stageOutgoingMessage(message);
 
     SimpleTask.run(() -> {
-      long resultId = MessageSender.sendPushWithPreUploadedMedia(this, secureMessage, result.getPreUploadResults(), threadId, () -> fragment.releaseOutgoingMessage(id));
+      long resultId = MessageSender.sendPushWithPreUploadedMedia(this, secureMessage, result.getPreUploadResults(), thread, () -> fragment.releaseOutgoingMessage(id));
 
       int deleted = DatabaseFactory.getAttachmentDatabase(this).deleteAbandonedPreuploadedAttachments();
       Log.i(TAG, "Deleted " + deleted + " abandoned attachments.");
@@ -2711,6 +2740,8 @@ public class ConversationActivity extends PassphraseRequiredActivity
       return new SettableFuture<>(null);
     }
 
+    final long thread = this.threadId;
+
     if (isSecureText && !forceSms) {
       MessageUtil.SplitResult splitMessage = MessageUtil.getSplitMessage(this, body, sendButton.getSelectedTransport().calculateCharacters(body).maxPrimaryMessageSize);
       body = splitMessage.getBody();
@@ -2729,7 +2760,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
 
     if (isSecureText && !forceSms) {
       outgoingMessage = new OutgoingSecureMediaMessage(outgoingMessageCandidate);
-      ApplicationDependencies.getTypingStatusSender().onTypingStopped(threadId);
+      ApplicationDependencies.getTypingStatusSender().onTypingStopped(thread);
     } else {
       outgoingMessage = outgoingMessageCandidate;
     }
@@ -2748,7 +2779,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
                  final long id = fragment.stageOutgoingMessage(outgoingMessage);
 
                  SimpleTask.run(() -> {
-                   return MessageSender.send(context, outgoingMessage, threadId, forceSms, () -> fragment.releaseOutgoingMessage(id));
+                   return MessageSender.send(context, outgoingMessage, thread, forceSms, () -> fragment.releaseOutgoingMessage(id));
                  }, result -> {
                    sendComplete(result);
                    future.set(null);
@@ -2768,6 +2799,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
       return;
     }
 
+    final long    thread      = this.threadId;
     final Context context     = getApplicationContext();
     final String  messageBody = getMessage();
 
@@ -2775,7 +2807,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
 
     if (isSecureText && !forceSms) {
       message = new OutgoingEncryptedMessage(recipient.get(), messageBody, expiresIn);
-      ApplicationDependencies.getTypingStatusSender().onTypingStopped(threadId);
+      ApplicationDependencies.getTypingStatusSender().onTypingStopped(thread);
     } else {
       message = new OutgoingTextMessage(recipient.get(), messageBody, expiresIn, subscriptionId);
     }
@@ -2791,7 +2823,7 @@ public class ConversationActivity extends PassphraseRequiredActivity
                  new AsyncTask<OutgoingTextMessage, Void, Long>() {
                    @Override
                    protected Long doInBackground(OutgoingTextMessage... messages) {
-                     return MessageSender.send(context, messages[0], threadId, forceSms, () -> fragment.releaseOutgoingMessage(id));
+                     return MessageSender.send(context, messages[0], thread, forceSms, () -> fragment.releaseOutgoingMessage(id));
                    }
 
                    @Override

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationDataSource.java

@@ -14,7 +14,6 @@ import org.thoughtcrime.securesms.database.DatabaseFactory;
 import org.thoughtcrime.securesms.database.MmsSmsDatabase;
 import org.thoughtcrime.securesms.database.model.Mention;
 import org.thoughtcrime.securesms.database.model.MessageRecord;
-import org.thoughtcrime.securesms.tracing.Trace;
 import org.thoughtcrime.securesms.util.Stopwatch;
 
 import java.util.ArrayList;
@@ -27,7 +26,6 @@ import java.util.Map;
 /**
  * Core data source for loading an individual conversation.
  */
-@Trace
 class ConversationDataSource implements PagedDataSource<ConversationMessage> {
 
   private static final String TAG = Log.tag(ConversationDataSource.class);

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationFragment.java

@@ -66,9 +66,11 @@ import org.signal.core.util.StreamUtil;
 import org.signal.core.util.concurrent.SignalExecutors;
 import org.signal.core.util.logging.Log;
 import org.thoughtcrime.securesms.ApplicationContext;
+import org.thoughtcrime.securesms.ApplicationPreferencesActivity;
 import org.thoughtcrime.securesms.LoggingFragment;
 import org.thoughtcrime.securesms.PassphraseRequiredActivity;
 import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.VerifyIdentityActivity;
 import org.thoughtcrime.securesms.attachments.Attachment;
 import org.thoughtcrime.securesms.components.ConversationScrollToView;
 import org.thoughtcrime.securesms.components.ConversationTypingView;
@@ -93,6 +95,7 @@ import org.thoughtcrime.securesms.database.model.MmsMessageRecord;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.groups.GroupId;
 import org.thoughtcrime.securesms.groups.GroupMigrationMembershipChange;
+import org.thoughtcrime.securesms.groups.ui.invitesandrequests.invite.GroupLinkInviteFriendsBottomSheetDialogFragment;
 import org.thoughtcrime.securesms.groups.ui.migration.GroupsV1MigrationInfoBottomSheetDialogFragment;
 import org.thoughtcrime.securesms.jobs.DirectoryRefreshJob;
 import org.thoughtcrime.securesms.jobs.MultiDeviceViewOnceOpenJob;
@@ -121,7 +124,6 @@ import org.thoughtcrime.securesms.sms.MessageSender;
 import org.thoughtcrime.securesms.sms.OutgoingTextMessage;
 import org.thoughtcrime.securesms.stickers.StickerLocator;
 import org.thoughtcrime.securesms.stickers.StickerPackPreviewActivity;
-import org.thoughtcrime.securesms.tracing.Trace;
 import org.thoughtcrime.securesms.util.CachedInflater;
 import org.thoughtcrime.securesms.util.CommunicationActions;
 import org.thoughtcrime.securesms.util.HtmlUtil;
@@ -147,9 +149,9 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Locale;
+import java.util.Objects;
 import java.util.Set;
 
-@Trace
 @SuppressLint("StaticFieldLeak")
 public class ConversationFragment extends LoggingFragment {
   private static final String TAG = ConversationFragment.class.getSimpleName();
@@ -250,8 +252,11 @@ public class ConversationFragment extends LoggingFragment {
     this.messageCountsViewModel = ViewModelProviders.of(requireActivity()).get(MessageCountsViewModel.class);
     this.conversationViewModel  = ViewModelProviders.of(requireActivity(), new ConversationViewModel.Factory()).get(ConversationViewModel.class);
 
-    conversationViewModel.getMessages().observe(this, list -> {
-      getListAdapter().submitList(list);
+    conversationViewModel.getMessages().observe(this, messages -> {
+      ConversationAdapter adapter = getListAdapter();
+      if (adapter != null) {
+        getListAdapter().submitList(messages);
+      }
     });
 
     conversationViewModel.getConversationMetadata().observe(this, this::presentConversationMetadata);
@@ -1005,7 +1010,7 @@ public class ConversationFragment extends LoggingFragment {
 
   private void moveToPosition(int position, @Nullable Runnable onMessageNotFound) {
     Log.d(TAG, "moveToPosition(" + position + ")");
-    conversationViewModel.onConversationDataAvailable(threadId, position);
+    conversationViewModel.getPagingController().onDataNeededAroundIndex(position);
     snapToTopDataObserver.buildScrollPosition(position)
                          .withOnPerformScroll(((layoutManager, p) ->
                              list.post(() -> {
@@ -1413,10 +1418,63 @@ public class ConversationFragment extends LoggingFragment {
       GroupsV1MigrationInfoBottomSheetDialogFragment.show(requireFragmentManager(), membershipChange);
     }
 
+    @Override
+    public void onDecryptionFailedLearnMoreClicked() {
+      new AlertDialog.Builder(requireContext())
+          .setView(R.layout.decryption_failed_dialog)
+          .setPositiveButton(android.R.string.ok, (d, w) -> {
+            d.dismiss();
+          })
+          .setNeutralButton(R.string.ConversationFragment_contact_us, (d, w) -> {
+            Intent intent = new Intent(requireContext(), ApplicationPreferencesActivity.class);
+            intent.putExtra(ApplicationPreferencesActivity.LAUNCH_TO_HELP_FRAGMENT, true);
+
+            startActivity(intent);
+            d.dismiss();
+          })
+          .show();
+    }
+
+    @Override
+    public void onSafetyNumberLearnMoreClicked(@NonNull Recipient recipient) {
+      if (recipient.isGroup()) {
+        throw new AssertionError("Must be individual");
+      }
+
+      AlertDialog dialog = new AlertDialog.Builder(requireContext())
+                                          .setView(R.layout.safety_number_changed_learn_more_dialog)
+                                          .setPositiveButton(R.string.ConversationFragment_verify, (d, w) -> {
+                                            SimpleTask.run(getLifecycle(), () -> {
+                                              return DatabaseFactory.getIdentityDatabase(requireContext()).getIdentity(recipient.getId());
+                                            }, identityRecord -> {
+                                              if (identityRecord.isPresent()) {
+                                                startActivity(VerifyIdentityActivity.newIntent(requireContext(), identityRecord.get()));
+                                              }});
+                                            d.dismiss();
+                                          })
+                                          .setNegativeButton(R.string.ConversationFragment_not_now, (d, w) -> {
+                                            d.dismiss();
+                                          })
+                                          .create();
+      dialog.setOnShowListener(d -> {
+        TextView title = Objects.requireNonNull(dialog.findViewById(R.id.safety_number_learn_more_title));
+        TextView body  = Objects.requireNonNull(dialog.findViewById(R.id.safety_number_learn_more_body));
+
+        title.setText(getString(R.string.ConversationFragment_your_safety_number_with_s_changed, recipient.getDisplayName(requireContext())));
+        body.setText(getString(R.string.ConversationFragment_your_safety_number_with_s_changed_likey_because_they_reinstalled_signal, recipient.getDisplayName(requireContext())));
+      });
+
+      dialog.show();
+    }
     @Override
     public void onJoinGroupCallClicked() {
       CommunicationActions.startVideoCall(requireActivity(), recipient.get());
     }
+
+    @Override
+    public void onInviteFriendsToGroupClicked(@NonNull GroupId.V2 groupId) {
+      GroupLinkInviteFriendsBottomSheetDialogFragment.show(requireActivity().getSupportFragmentManager(), groupId);
+    }
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationGroupViewModel.java

@@ -6,6 +6,7 @@ import android.content.Context;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.WorkerThread;
+import androidx.fragment.app.FragmentManager;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.Transformations;
@@ -25,19 +26,19 @@ import org.thoughtcrime.securesms.groups.GroupId;
 import org.thoughtcrime.securesms.groups.GroupManager;
 import org.thoughtcrime.securesms.groups.GroupsV1MigrationUtil;
 import org.thoughtcrime.securesms.groups.ui.GroupChangeFailureReason;
+import org.thoughtcrime.securesms.groups.ui.invitesandrequests.invite.GroupLinkInviteFriendsBottomSheetDialogFragment;
 import org.thoughtcrime.securesms.profiles.spoofing.ReviewRecipient;
 import org.thoughtcrime.securesms.profiles.spoofing.ReviewUtil;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
 import org.thoughtcrime.securesms.util.AsynchronousCallback;
 import org.thoughtcrime.securesms.util.FeatureFlags;
-import org.thoughtcrime.securesms.util.SetUtil;
+import org.thoughtcrime.securesms.util.concurrent.SimpleTask;
 import org.thoughtcrime.securesms.util.livedata.LiveDataUtil;
 
 import java.io.IOException;
 import java.util.Collections;
 import java.util.List;
-import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
 final class ConversationGroupViewModel extends ViewModel {
@@ -52,6 +53,8 @@ final class ConversationGroupViewModel extends ViewModel {
   private final LiveData<List<RecipientId>>         gv1MigrationSuggestions;
   private final LiveData<Boolean>                   gv1MigrationReminder;
 
+  private boolean firstTimeInviteFriendsTriggered;
+
   private ConversationGroupViewModel() {
     this.liveRecipient = new MutableLiveData<>();
 
@@ -83,10 +86,10 @@ final class ConversationGroupViewModel extends ViewModel {
     liveRecipient.setValue(recipient);
   }
 
-  void onSuggestedMembersBannerDismissed(@NonNull GroupId groupId) {
+  void onSuggestedMembersBannerDismissed(@NonNull GroupId groupId, @NonNull List<RecipientId> suggestions) {
     SignalExecutors.BOUNDED.execute(() -> {
       if (groupId.isV2()) {
-        DatabaseFactory.getGroupDatabase(ApplicationDependencies.getApplication()).clearFormerV1Members(groupId.requireV2());
+        DatabaseFactory.getGroupDatabase(ApplicationDependencies.getApplication()).removeUnmigratedV1Members(groupId.requireV2(), suggestions);
         liveRecipient.postValue(liveRecipient.getValue());
       }
     });
@@ -177,9 +180,9 @@ final class ConversationGroupViewModel extends ViewModel {
       return Collections.emptyList();
     }
 
-    Set<RecipientId> difference = SetUtil.difference(record.getFormerV1Members(), record.getMembers());
-
-    return Stream.of(Recipient.resolvedList(difference))
+    return Stream.of(record.getUnmigratedV1Members())
+                 .filterNot(m -> record.getMembers().contains(m))
+                 .map(Recipient::resolved)
                  .filter(GroupsV1MigrationUtil::isAutoMigratable)
                  .map(Recipient::getId)
                  .toList();
@@ -227,6 +230,28 @@ final class ConversationGroupViewModel extends ViewModel {
     });
   }
 
+  void inviteFriendsOneTimeIfJustSelfInGroup(@NonNull FragmentManager supportFragmentManager, @NonNull GroupId.V2 groupId) {
+    if (firstTimeInviteFriendsTriggered) {
+      return;
+    }
+
+    firstTimeInviteFriendsTriggered = true;
+
+    SimpleTask.run(() -> DatabaseFactory.getGroupDatabase(ApplicationDependencies.getApplication())
+                                        .requireGroup(groupId)
+                                        .getMembers().equals(Collections.singletonList(Recipient.self().getId())),
+                   justSelf -> {
+                     if (justSelf) {
+                       inviteFriends(supportFragmentManager, groupId);
+                     }
+                   }
+    );
+  }
+
+  void inviteFriends(@NonNull FragmentManager supportFragmentManager, @NonNull GroupId.V2 groupId) {
+    GroupLinkInviteFriendsBottomSheetDialogFragment.show(supportFragmentManager, groupId);
+  }
+
   static final class ReviewState {
 
     private static final ReviewState EMPTY = new ReviewState(null, Recipient.UNKNOWN, 0);

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationIntents.java

@@ -18,15 +18,16 @@ import java.util.Objects;
 
 public class ConversationIntents {
 
-  private static final String BUBBLE_AUTHORITY        = "bubble";
-  private static final String EXTRA_RECIPIENT         = "recipient_id";
-  private static final String EXTRA_THREAD_ID         = "thread_id";
-  private static final String EXTRA_TEXT              = "draft_text";
-  private static final String EXTRA_MEDIA             = "media_list";
-  private static final String EXTRA_STICKER           = "sticker_extra";
-  private static final String EXTRA_BORDERLESS        = "borderless_extra";
-  private static final String EXTRA_DISTRIBUTION_TYPE = "distribution_type";
-  private static final String EXTRA_STARTING_POSITION = "starting_position";
+  private static final String BUBBLE_AUTHORITY                       = "bubble";
+  private static final String EXTRA_RECIPIENT                        = "recipient_id";
+  private static final String EXTRA_THREAD_ID                        = "thread_id";
+  private static final String EXTRA_TEXT                             = "draft_text";
+  private static final String EXTRA_MEDIA                            = "media_list";
+  private static final String EXTRA_STICKER                          = "sticker_extra";
+  private static final String EXTRA_BORDERLESS                       = "borderless_extra";
+  private static final String EXTRA_DISTRIBUTION_TYPE                = "distribution_type";
+  private static final String EXTRA_STARTING_POSITION                = "starting_position";
+  private static final String EXTRA_FIRST_TIME_IN_SELF_CREATED_GROUP = "first_time_in_group";
 
   private ConversationIntents() {
   }
@@ -63,7 +64,8 @@ public class ConversationIntents {
     private final StickerLocator   stickerLocator;
     private final boolean          isBorderless;
     private final int              distributionType;
-    private final int              startingPosition;
+    private final int     startingPosition;
+    private final boolean firstTimeInSelfCreatedGroup;
 
     static Args from(@NonNull Intent intent) {
       if (isBubbleIntent(intent)) {
@@ -74,7 +76,8 @@ public class ConversationIntents {
                         null,
                         false,
                         ThreadDatabase.DistributionTypes.DEFAULT,
-                        -1);
+                        -1,
+                        false);
       }
 
       return new Args(RecipientId.from(Objects.requireNonNull(intent.getStringExtra(EXTRA_RECIPIENT))),
@@ -84,7 +87,8 @@ public class ConversationIntents {
                       intent.getParcelableExtra(EXTRA_STICKER),
                       intent.getBooleanExtra(EXTRA_BORDERLESS, false),
                       intent.getIntExtra(EXTRA_DISTRIBUTION_TYPE, ThreadDatabase.DistributionTypes.DEFAULT),
-                      intent.getIntExtra(EXTRA_STARTING_POSITION, -1));
+                      intent.getIntExtra(EXTRA_STARTING_POSITION, -1),
+                      intent.getBooleanExtra(EXTRA_FIRST_TIME_IN_SELF_CREATED_GROUP, false));
     }
 
     private Args(@NonNull RecipientId recipientId,
@@ -94,16 +98,18 @@ public class ConversationIntents {
                  @Nullable StickerLocator stickerLocator,
                  boolean isBorderless,
                  int distributionType,
-                 int startingPosition)
+                 int startingPosition,
+                 boolean firstTimeInSelfCreatedGroup)
     {
-      this.recipientId      = recipientId;
-      this.threadId         = threadId;
-      this.draftText        = draftText;
-      this.media            = media;
-      this.stickerLocator   = stickerLocator;
-      this.isBorderless     = isBorderless;
-      this.distributionType = distributionType;
-      this.startingPosition = startingPosition;
+      this.recipientId                 = recipientId;
+      this.threadId                    = threadId;
+      this.draftText                   = draftText;
+      this.media                       = media;
+      this.stickerLocator              = stickerLocator;
+      this.isBorderless                = isBorderless;
+      this.distributionType            = distributionType;
+      this.startingPosition            = startingPosition;
+      this.firstTimeInSelfCreatedGroup = firstTimeInSelfCreatedGroup;
     }
 
     public @NonNull RecipientId getRecipientId() {
@@ -137,6 +143,10 @@ public class ConversationIntents {
     public boolean isBorderless() {
       return isBorderless;
     }
+
+    public boolean isFirstTimeInSelfCreatedGroup() {
+      return firstTimeInSelfCreatedGroup;
+    }
   }
 
   public final static class Builder {
@@ -153,6 +163,7 @@ public class ConversationIntents {
     private int              startingPosition = -1;
     private Uri              dataUri;
     private String           dataType;
+    private boolean          firstTimeInSelfCreatedGroup;
 
     private Builder(@NonNull Context context,
                     @NonNull RecipientId recipientId,
@@ -212,6 +223,11 @@ public class ConversationIntents {
       return this;
     }
 
+    public Builder firstTimeInSelfCreatedGroup() {
+      this.firstTimeInSelfCreatedGroup = true;
+      return this;
+    }
+
     public @NonNull Intent build() {
       if (stickerLocator != null && media != null) {
         throw new IllegalStateException("Cannot have both sticker and media array");
@@ -235,6 +251,7 @@ public class ConversationIntents {
       intent.putExtra(EXTRA_DISTRIBUTION_TYPE, distributionType);
       intent.putExtra(EXTRA_STARTING_POSITION, startingPosition);
       intent.putExtra(EXTRA_BORDERLESS, isBorderless);
+      intent.putExtra(EXTRA_FIRST_TIME_IN_SELF_CREATED_GROUP, firstTimeInSelfCreatedGroup);
 
       if (draftText != null) {
         intent.putExtra(EXTRA_TEXT, draftText);

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationStickerViewModel.java

@@ -3,6 +3,7 @@ package org.thoughtcrime.securesms.conversation;
 import android.app.Application;
 import android.database.ContentObserver;
 import android.os.Handler;
+import android.os.Looper;
 import android.text.TextUtils;
 
 import androidx.annotation.NonNull;
@@ -35,7 +36,7 @@ class ConversationStickerViewModel extends ViewModel {
     this.stickers              = new MutableLiveData<>();
     this.stickersAvailable     = new MutableLiveData<>();
     this.availabilityThrottler = new Throttler(500);
-    this.packObserver          = new ContentObserver(new Handler()) {
+    this.packObserver          = new ContentObserver(new Handler(Looper.getMainLooper())) {
       @Override
       public void onChange(boolean selfChange) {
         availabilityThrottler.publish(() -> repository.getStickerFeatureAvailability(stickersAvailable::postValue));

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationUpdateItem.java

@@ -50,15 +50,18 @@ public final class ConversationUpdateItem extends LinearLayout
 
   private TextView                body;
   private TextView                actionButton;
-  private LiveRecipient           sender;
   private ConversationMessage     conversationMessage;
+  private Recipient               conversationRecipient;
   private Optional<MessageRecord> nextMessageRecord;
   private MessageRecord           messageRecord;
   private LiveData<Spannable>     displayBody;
   private EventListener           eventListener;
 
   private final UpdateObserver updateObserver = new UpdateObserver();
-  private final SenderObserver senderObserver = new SenderObserver();
+
+  private final PresentOnChange          presentOnChange = new PresentOnChange();
+  private final RecipientObserverManager senderObserver  = new RecipientObserverManager(presentOnChange);
+  private final RecipientObserverManager groupObserver   = new RecipientObserverManager(presentOnChange);
 
   public ConversationUpdateItem(Context context) {
     super(context);
@@ -91,7 +94,7 @@ public final class ConversationUpdateItem extends LinearLayout
   {
     this.batchSelected = batchSelected;
 
-    bind(lifecycleOwner, conversationMessage, nextMessageRecord);
+    bind(lifecycleOwner, conversationMessage, nextMessageRecord, conversationRecipient);
   }
 
   @Override
@@ -106,20 +109,26 @@ public final class ConversationUpdateItem extends LinearLayout
 
   private void bind(@NonNull LifecycleOwner lifecycleOwner,
                     @NonNull ConversationMessage conversationMessage,
-                    @NonNull Optional<MessageRecord> nextMessageRecord)
+                    @NonNull Optional<MessageRecord> nextMessageRecord,
+                    @NonNull Recipient conversationRecipient)
   {
-    this.conversationMessage = conversationMessage;
-    this.messageRecord       = conversationMessage.getMessageRecord();
-    this.nextMessageRecord   = nextMessageRecord;
+    this.conversationMessage   = conversationMessage;
+    this.messageRecord         = conversationMessage.getMessageRecord();
+    this.nextMessageRecord     = nextMessageRecord;
+    this.conversationRecipient = conversationRecipient;
 
-    observeSender(lifecycleOwner, messageRecord.getIndividualRecipient());
+    senderObserver.observe(lifecycleOwner, messageRecord.getIndividualRecipient());
+
+    if (conversationRecipient.isActiveGroup() && conversationMessage.getMessageRecord().isGroupCall()) {
+      groupObserver.observe(lifecycleOwner, conversationRecipient);
+    } else {
+      groupObserver.observe(lifecycleOwner, null);
+    }
 
     UpdateDescription   updateDescription = Objects.requireNonNull(messageRecord.getUpdateDisplayBody(getContext()));
     LiveData<Spannable> liveUpdateMessage = LiveUpdateMessage.fromMessageDescription(getContext(), updateDescription, ContextCompat.getColor(getContext(), R.color.conversation_item_update_text_color));
     LiveData<Spannable> spannableMessage  = loading(liveUpdateMessage);
 
-    present(conversationMessage, nextMessageRecord);
-
     observeDisplayBody(lifecycleOwner, spannableMessage);
   }
 
@@ -132,16 +141,31 @@ public final class ConversationUpdateItem extends LinearLayout
   public void unbind() {
   }
 
-  private void observeSender(@NonNull LifecycleOwner lifecycleOwner, @Nullable Recipient recipient) {
-    if (sender != null) {
-      sender.getLiveData().removeObserver(senderObserver);
+  static final class RecipientObserverManager {
+
+    private final Observer<Recipient> recipientObserver;
+
+    private LiveRecipient recipient;
+
+    RecipientObserverManager(@NonNull Observer<Recipient> observer){
+      this.recipientObserver = observer;
     }
 
-    if (recipient != null) {
-      sender = recipient.live();
-      sender.getLiveData().observe(lifecycleOwner, senderObserver);
-    } else {
-      sender = null;
+    public void observe(@NonNull LifecycleOwner lifecycleOwner, @Nullable Recipient recipient) {
+      if (this.recipient != null) {
+        this.recipient.getLiveData().removeObserver(recipientObserver);
+      }
+
+      if (recipient != null) {
+        this.recipient = recipient.live();
+        this.recipient.getLiveData().observe(lifecycleOwner, recipientObserver);
+      } else {
+        this.recipient = null;
+      }
+    }
+
+    @NonNull Recipient getObservedRecipient() {
+      return recipient.get();
     }
   }
 
@@ -168,7 +192,7 @@ public final class ConversationUpdateItem extends LinearLayout
     }
   }
 
-  private void present(ConversationMessage conversationMessage, @NonNull Optional<MessageRecord> nextMessageRecord) {
+  private void present(ConversationMessage conversationMessage, @NonNull Optional<MessageRecord> nextMessageRecord, @NonNull Recipient conversationRecipient) {
     if (batchSelected.contains(conversationMessage)) setSelected(true);
     else                                             setSelected(false);
 
@@ -182,20 +206,40 @@ public final class ConversationUpdateItem extends LinearLayout
           eventListener.onGroupMigrationLearnMoreClicked(conversationMessage.getMessageRecord().getGroupV1MigrationMembershipChanges());
         }
       });
+    } else if (conversationMessage.getMessageRecord().isFailedDecryptionType() &&
+              (!nextMessageRecord.isPresent() || !nextMessageRecord.get().isFailedDecryptionType()))
+    {
+      actionButton.setText(R.string.ConversationUpdateItem_learn_more);
+      actionButton.setVisibility(VISIBLE);
+      actionButton.setOnClickListener(v -> {
+        if (batchSelected.isEmpty() && eventListener != null) {
+          eventListener.onDecryptionFailedLearnMoreClicked();
+        }
+      });
+    } else if (conversationMessage.getMessageRecord().isIdentityUpdate()) {
+      actionButton.setText(R.string.ConversationUpdateItem_learn_more);
+      actionButton.setVisibility(VISIBLE);
+      actionButton.setOnClickListener(v -> {
+        if (batchSelected.isEmpty() && eventListener != null) {
+          eventListener.onSafetyNumberLearnMoreClicked(conversationMessage.getMessageRecord().getIndividualRecipient());
+        }
+      });
     } else if (conversationMessage.getMessageRecord().isGroupCall()) {
       UpdateDescription updateDescription = MessageRecord.getGroupCallUpdateDescription(getContext(), conversationMessage.getMessageRecord().getBody(), true);
       Collection<UUID>  uuids             = updateDescription.getMentioned();
 
       int text = 0;
       if (Util.hasItems(uuids)) {
-        if (GroupCallUpdateDetailsUtil.parse(conversationMessage.getMessageRecord().getBody()).getIsCallFull()) {
+        if (uuids.contains(TextSecurePreferences.getLocalUuid(getContext()))) {
+          text = R.string.ConversationUpdateItem_return_to_call;
+        } else if (GroupCallUpdateDetailsUtil.parse(conversationMessage.getMessageRecord().getBody()).getIsCallFull()) {
           text = R.string.ConversationUpdateItem_call_is_full;
         } else {
-          text = uuids.contains(TextSecurePreferences.getLocalUuid(getContext())) ? R.string.ConversationUpdateItem_return_to_call : R.string.ConversationUpdateItem_join_call;
+          text = R.string.ConversationUpdateItem_join_call;
         }
       }
 
-      if (text != 0) {
+      if (text != 0 && conversationRecipient.isGroup() && conversationRecipient.isActiveGroup()) {
         actionButton.setText(text);
         actionButton.setVisibility(VISIBLE);
         actionButton.setOnClickListener(v -> {
@@ -207,6 +251,14 @@ public final class ConversationUpdateItem extends LinearLayout
         actionButton.setVisibility(GONE);
         actionButton.setOnClickListener(null);
       }
+    } else if (conversationMessage.getMessageRecord().isSelfCreatedGroup()) {
+      actionButton.setText(R.string.ConversationUpdateItem_invite_friends);
+      actionButton.setVisibility(VISIBLE);
+      actionButton.setOnClickListener(v -> {
+        if (batchSelected.isEmpty() && eventListener != null) {
+          eventListener.onInviteFriendsToGroupClicked(conversationRecipient.requireGroupId().requireV2());
+        }
+      });
     } else {
       actionButton.setVisibility(GONE);
       actionButton.setOnClickListener(null);
@@ -218,11 +270,14 @@ public final class ConversationUpdateItem extends LinearLayout
     super.setOnClickListener(new InternalClickListener(l));
   }
 
-  private final class SenderObserver implements Observer<Recipient> {
+  private final class PresentOnChange implements Observer<Recipient> {
 
     @Override
     public void onChanged(Recipient recipient) {
-      present(conversationMessage, nextMessageRecord);
+      if (recipient.getId() == conversationRecipient.getId()) {
+        conversationRecipient = recipient;
+      }
+      present(conversationMessage, nextMessageRecord, conversationRecipient);
     }
   }
 
@@ -253,7 +308,7 @@ public final class ConversationUpdateItem extends LinearLayout
         return;
       }
 
-      final Recipient sender = ConversationUpdateItem.this.sender.get();
+      final Recipient sender = ConversationUpdateItem.this.senderObserver.getObservedRecipient();
 
       IdentityUtil.getRemoteIdentityKey(getContext(), sender).addListener(new ListenableFuture.Listener<Optional<IdentityRecord>>() {
         @Override

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationViewModel.java

@@ -1,7 +1,6 @@
 package org.thoughtcrime.securesms.conversation;
 
 import android.app.Application;
-import android.database.ContentObserver;
 
 import androidx.annotation.MainThread;
 import androidx.annotation.NonNull;
@@ -16,7 +15,7 @@ import org.signal.paging.PagedData;
 import org.signal.paging.PagingConfig;
 import org.signal.paging.PagingController;
 import org.signal.paging.ProxyPagingController;
-import org.thoughtcrime.securesms.database.DatabaseContentProviders;
+import org.thoughtcrime.securesms.database.DatabaseObserver;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.mediasend.Media;
 import org.thoughtcrime.securesms.mediasend.MediaRepository;
@@ -41,11 +40,10 @@ class ConversationViewModel extends ViewModel {
   private final MutableLiveData<Boolean>            hasUnreadMentions;
   private final LiveData<Boolean>                   canShowAsBubble;
   private final ProxyPagingController               pagingController;
-  private final ContentObserver                     messageObserver;
+  private final DatabaseObserver.Observer           messageObserver;
 
   private ConversationIntents.Args args;
   private int                      jumpToPosition;
-  private boolean                  hasRegisteredObserver;
 
   private ConversationViewModel() {
     this.context                = ApplicationDependencies.getApplication();
@@ -56,12 +54,7 @@ class ConversationViewModel extends ViewModel {
     this.showScrollButtons      = new MutableLiveData<>(false);
     this.hasUnreadMentions      = new MutableLiveData<>(false);
     this.pagingController       = new ProxyPagingController();
-    this.messageObserver        = new ContentObserver(null) {
-      @Override
-      public void onChange(boolean selfChange) {
-        pagingController.onDataInvalidated();
-      }
-    };
+    this.messageObserver        = pagingController::onDataInvalidated;
 
     LiveData<ConversationData> metadata = Transformations.switchMap(threadId, thread -> {
       LiveData<ConversationData> conversationData = conversationRepository.getConversationData(thread, jumpToPosition);
@@ -83,17 +76,13 @@ class ConversationViewModel extends ViewModel {
         startPosition = data.getThreadSize();
       }
 
-      if (hasRegisteredObserver) {
-        context.getContentResolver().unregisterContentObserver(messageObserver);
-      }
-
-      context.getContentResolver().registerContentObserver(DatabaseContentProviders.Conversation.getUriForThread(data.getThreadId()), true, messageObserver);
-      hasRegisteredObserver = true;
+      ApplicationDependencies.getDatabaseObserver().unregisterObserver(messageObserver);
+      ApplicationDependencies.getDatabaseObserver().registerConversationObserver(data.getThreadId(), messageObserver);
 
       ConversationDataSource dataSource = new ConversationDataSource(context, data.getThreadId());
       PagingConfig           config     = new PagingConfig.Builder()
                                                           .setPageSize(25)
-                                                          .setBufferPages(1)
+                                                          .setBufferPages(3)
                                                           .setStartIndex(Math.max(startPosition, 0))
                                                           .build();
 
@@ -182,7 +171,7 @@ class ConversationViewModel extends ViewModel {
   @Override
   protected void onCleared() {
     super.onCleared();
-    context.getContentResolver().unregisterContentObserver(messageObserver);
+    ApplicationDependencies.getDatabaseObserver().unregisterObserver(messageObserver);
   }
 
   static class Factory extends ViewModelProvider.NewInstanceFactory {

app/src/main/java/org/thoughtcrime/securesms/conversation/MenuState.java

@@ -131,7 +131,8 @@ final class MenuState {
            messageRecord.isIdentityUpdate()        ||
            messageRecord.isIdentityVerified()      ||
            messageRecord.isIdentityDefault()       ||
-           messageRecord.isProfileChange();
+           messageRecord.isProfileChange()         ||
+           messageRecord.isFailedDecryptionType();
   }
 
   private final static class Builder {

app/src/main/java/org/thoughtcrime/securesms/conversation/ui/groupcall/GroupCallViewModel.java

@@ -16,6 +16,7 @@ import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.ringrtc.RemotePeer;
 import org.thoughtcrime.securesms.service.WebRtcCallService;
 import org.thoughtcrime.securesms.util.FeatureFlags;
+import org.thoughtcrime.securesms.util.livedata.LiveDataUtil;
 
 import java.util.Objects;
 
@@ -23,31 +24,37 @@ public class GroupCallViewModel extends ViewModel {
 
   private static final String TAG = Log.tag(GroupCallViewModel.class);
 
-  private final MutableLiveData<Boolean> activeGroupCall;
-  private final MutableLiveData<Boolean> canJoin;
+  private final MutableLiveData<Boolean> activeGroup;
+  private final MutableLiveData<Boolean> ongoingGroupCall;
+  private final LiveData<Boolean>        activeGroupCall;
+  private final MutableLiveData<Boolean> groupCallHasCapacity;
 
   private @Nullable Recipient currentRecipient;
 
   GroupCallViewModel() {
-    this.activeGroupCall = new MutableLiveData<>(false);
-    this.canJoin         = new MutableLiveData<>(false);
+    this.activeGroup          = new MutableLiveData<>(false);
+    this.ongoingGroupCall     = new MutableLiveData<>(false);
+    this.groupCallHasCapacity = new MutableLiveData<>(false);
+    this.activeGroupCall      = LiveDataUtil.combineLatest(activeGroup, ongoingGroupCall, (active, ongoing) -> active && ongoing);
   }
 
   public @NonNull LiveData<Boolean> hasActiveGroupCall() {
     return activeGroupCall;
   }
 
-  public @NonNull LiveData<Boolean> canJoinGroupCall() {
-    return canJoin;
+  public @NonNull LiveData<Boolean> groupCallHasCapacity() {
+    return groupCallHasCapacity;
   }
 
   public void onRecipientChange(@NonNull Context context, @Nullable Recipient recipient) {
+    activeGroup.postValue(recipient != null && recipient.isActiveGroup());
+
     if (Objects.equals(currentRecipient, recipient)) {
       return;
     }
 
-    activeGroupCall.postValue(false);
-    canJoin.postValue(false);
+    ongoingGroupCall.postValue(false);
+    groupCallHasCapacity.postValue(false);
 
     currentRecipient = recipient;
 
@@ -67,10 +74,10 @@ public class GroupCallViewModel extends ViewModel {
 
   public void onGroupCallPeekEvent(@NonNull GroupCallPeekEvent groupCallPeekEvent) {
     if (isGroupCallCapable(currentRecipient) && groupCallPeekEvent.getGroupRecipientId().equals(currentRecipient.getId())) {
-      Log.i(TAG, "update UI with call event: active call: " + groupCallPeekEvent.hasActiveCall() + " canJoin: " + groupCallPeekEvent.canJoinCall());
+      Log.i(TAG, "update UI with call event: ongoing call: " + groupCallPeekEvent.isOngoing() + " hasCapacity: " + groupCallPeekEvent.callHasCapacity());
 
-      activeGroupCall.postValue(groupCallPeekEvent.hasActiveCall());
-      canJoin.postValue(groupCallPeekEvent.canJoinCall());
+      ongoingGroupCall.postValue(groupCallPeekEvent.isOngoing());
+      groupCallHasCapacity.postValue(groupCallPeekEvent.callHasCapacity());
     } else {
       Log.i(TAG, "Ignore call event for different recipient.");
     }

app/src/main/java/org/thoughtcrime/securesms/conversation/ui/mentions/MentionsPickerFragment.java

@@ -2,6 +2,7 @@ package org.thoughtcrime.securesms.conversation.ui.mentions;
 
 import android.os.Bundle;
 import android.os.Handler;
+import android.os.Looper;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -32,7 +33,7 @@ public class MentionsPickerFragment extends LoggingFragment {
   private       BottomSheetBehavior<View> behavior;
   private       MentionsPickerViewModel   viewModel;
   private final Runnable                  lockSheetAfterListUpdate = () -> behavior.setHideable(false);
-  private final Handler                   handler                  = new Handler();
+  private final Handler                   handler                  = new Handler(Looper.getMainLooper());
 
   @Override
   public @Nullable View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

app/src/main/java/org/thoughtcrime/securesms/conversationlist/ConversationListAdapter.java

@@ -7,10 +7,13 @@ import android.widget.FrameLayout;
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
-import androidx.paging.PagedListAdapter;
+import androidx.annotation.Nullable;
 import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.ListAdapter;
 import androidx.recyclerview.widget.RecyclerView;
 
+import org.signal.core.util.logging.Log;
+import org.signal.paging.PagingController;
 import org.thoughtcrime.securesms.BindableConversationListItem;
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.conversationlist.model.Conversation;
@@ -28,7 +31,7 @@ import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
 
-class ConversationListAdapter extends PagedListAdapter<Conversation, RecyclerView.ViewHolder> {
+class ConversationListAdapter extends ListAdapter<Conversation, RecyclerView.ViewHolder> {
 
   private static final int TYPE_THREAD      = 1;
   private static final int TYPE_ACTION      = 2;
@@ -46,6 +49,8 @@ class ConversationListAdapter extends PagedListAdapter<Conversation, RecyclerVie
   private       boolean                     batchMode = false;
   private final Set<Long>                   typingSet = new HashSet<>();
 
+  private PagingController pagingController;
+
   protected ConversationListAdapter(@NonNull GlideRequests glideRequests,
                                     @NonNull OnConversationClickListener onConversationClickListener)
   {
@@ -156,6 +161,19 @@ class ConversationListAdapter extends PagedListAdapter<Conversation, RecyclerVie
     }
   }
 
+  @Override
+  protected Conversation getItem(int position) {
+    if (pagingController != null) {
+      pagingController.onDataNeededAroundIndex(position);
+    }
+
+    return super.getItem(position);
+  }
+
+  public void setPagingController(@Nullable PagingController pagingController) {
+    this.pagingController = pagingController;
+  }
+
   void setTypingThreads(@NonNull Set<Long> typingThreadSet) {
     this.typingSet.clear();
     this.typingSet.addAll(typingThreadSet);

app/src/main/java/org/thoughtcrime/securesms/conversationlist/ConversationListArchiveFragment.java

@@ -37,19 +37,19 @@ import com.google.android.material.snackbar.Snackbar;
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.components.registration.PulsingFloatingActionButton;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
-import org.thoughtcrime.securesms.tracing.Trace;
 import org.thoughtcrime.securesms.util.task.SnackbarAsyncTask;
+import org.thoughtcrime.securesms.util.views.Stub;
 
 import java.util.Set;
 
 
-@Trace
 public class ConversationListArchiveFragment extends ConversationListFragment implements ActionMode.Callback
 {
   private RecyclerView                list;
-  private View                        emptyState;
+  private Stub<View>                  emptyState;
   private PulsingFloatingActionButton fab;
   private PulsingFloatingActionButton cameraFab;
+  private Stub<Toolbar>               toolbar;
 
   public static ConversationListArchiveFragment newInstance() {
     return new ConversationListArchiveFragment();
@@ -63,26 +63,30 @@ public class ConversationListArchiveFragment extends ConversationListFragment im
 
   @Override
   public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+    toolbar = new Stub<>(view.findViewById(R.id.toolbar_basic));
+
     super.onViewCreated(view, savedInstanceState);
 
     list       = view.findViewById(R.id.list);
     fab        = view.findViewById(R.id.fab);
     cameraFab  = view.findViewById(R.id.camera_fab);
-    emptyState = view.findViewById(R.id.empty_state);
+    emptyState = new Stub<>(view.findViewById(R.id.empty_state));
 
     ((AppCompatActivity) requireActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
-    Toolbar toolbar = view.findViewById(R.id.toolbar_basic);
-    toolbar.setNavigationOnClickListener(v -> requireActivity().onBackPressed());
-    toolbar.setTitle(R.string.AndroidManifest_archived_conversations);
+    toolbar.get().setNavigationOnClickListener(v -> requireActivity().onBackPressed());
+    toolbar.get().setTitle(R.string.AndroidManifest_archived_conversations);
 
     fab.hide();
     cameraFab.hide();
   }
 
   @Override
-  protected void onPostSubmitList() {
+  protected void onPostSubmitList(int conversationCount) {
     list.setVisibility(View.VISIBLE);
-    emptyState.setVisibility(View.GONE);
+
+    if (emptyState.resolved()) {
+      emptyState.get().setVisibility(View.GONE);
+    }
   }
 
   @Override
@@ -91,8 +95,8 @@ public class ConversationListArchiveFragment extends ConversationListFragment im
   }
 
   @Override
-  protected int getToolbarRes() {
-    return R.id.toolbar_basic;
+  protected @NonNull Toolbar getToolbar(@NonNull View rootView) {
+    return toolbar.get();
   }
 
   @Override
@@ -144,6 +148,11 @@ public class ConversationListArchiveFragment extends ConversationListFragment im
       }
     }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, threadId);
   }
+
+  @Override
+  void updateEmptyState(boolean isConversationEmpty) {
+    // Do nothing
+  }
 }
 
 

app/src/main/java/org/thoughtcrime/securesms/conversationlist/ConversationListDataSource.java

@@ -1,122 +1,76 @@
 package org.thoughtcrime.securesms.conversationlist;
 
 import android.content.Context;
-import android.database.ContentObserver;
 import android.database.Cursor;
 import android.database.MatrixCursor;
 import android.database.MergeCursor;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.VisibleForTesting;
-import androidx.paging.DataSource;
-import androidx.paging.PositionalDataSource;
 
-import org.signal.core.util.concurrent.SignalExecutors;
 import org.signal.core.util.logging.Log;
+import org.signal.paging.PagedDataSource;
 import org.thoughtcrime.securesms.conversationlist.model.Conversation;
 import org.thoughtcrime.securesms.conversationlist.model.ConversationReader;
-import org.thoughtcrime.securesms.database.DatabaseContentProviders;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
 import org.thoughtcrime.securesms.database.ThreadDatabase;
 import org.thoughtcrime.securesms.database.model.ThreadRecord;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.recipients.Recipient;
-import org.thoughtcrime.securesms.tracing.Trace;
-import org.thoughtcrime.securesms.util.ThrottledDebouncer;
-import org.thoughtcrime.securesms.util.paging.Invalidator;
-import org.thoughtcrime.securesms.util.paging.SizeFixResult;
+import org.thoughtcrime.securesms.util.Stopwatch;
 
 import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
-import java.util.concurrent.Executor;
 
-@Trace
-abstract class ConversationListDataSource extends PositionalDataSource<Conversation> {
-
-  public static final Executor EXECUTOR = SignalExecutors.newFixedLifoThreadExecutor("signal-conversation-list", 1, 1);
-
-  private static final ThrottledDebouncer THROTTLER = new ThrottledDebouncer(500);
+abstract class ConversationListDataSource implements PagedDataSource<Conversation> {
 
   private static final String TAG = Log.tag(ConversationListDataSource.class);
 
   protected final ThreadDatabase threadDatabase;
 
-  protected ConversationListDataSource(@NonNull Context context, @NonNull Invalidator invalidator) {
+  protected ConversationListDataSource(@NonNull Context context) {
     this.threadDatabase = DatabaseFactory.getThreadDatabase(context);
-
-    ContentObserver contentObserver = new ContentObserver(null) {
-      @Override
-      public void onChange(boolean selfChange) {
-        THROTTLER.publish(() -> {
-          invalidate();
-          context.getContentResolver().unregisterContentObserver(this);
-        });
-      }
-    };
-
-    invalidator.observe(() -> {
-      invalidate();
-      context.getContentResolver().unregisterContentObserver(contentObserver);
-    });
-
-    context.getContentResolver().registerContentObserver(DatabaseContentProviders.ConversationList.CONTENT_URI,  true, contentObserver);
   }
 
-  private static ConversationListDataSource create(@NonNull Context context, @NonNull Invalidator invalidator, boolean isArchived) {
-    if (!isArchived) return new UnarchivedConversationListDataSource(context, invalidator);
-    else             return new ArchivedConversationListDataSource(context, invalidator);
+  public static ConversationListDataSource create(@NonNull Context context, boolean isArchived) {
+    if (!isArchived) return new UnarchivedConversationListDataSource(context);
+    else             return new ArchivedConversationListDataSource(context);
   }
 
   @Override
-  public final void loadInitial(@NonNull LoadInitialParams params, @NonNull LoadInitialCallback<Conversation> callback) {
-    long start = System.currentTimeMillis();
+  public int size() {
+    long startTime = System.currentTimeMillis();
+    int  count     = getTotalCount();
 
-    List<Conversation> conversations  = new ArrayList<>(params.requestedLoadSize);
-    int                totalCount     = getTotalCount();
-    int                effectiveCount = params.requestedStartPosition;
+    Log.d(TAG, "[size(), " + getClass().getSimpleName() + "] " + (System.currentTimeMillis() - startTime) + " ms");
+    return count;
+  }
+
+  @Override
+  public @NonNull List<Conversation> load(int start, int length, @NonNull CancellationSignal cancellationSignal) {
+    Stopwatch stopwatch = new Stopwatch("load(" + start + ", " + length + "), " + getClass().getSimpleName());
+
+    List<Conversation> conversations  = new ArrayList<>(length);
     List<Recipient>    recipients     = new LinkedList<>();
 
-    try (ConversationReader reader = new ConversationReader(getCursor(params.requestedStartPosition, params.requestedLoadSize))) {
+    try (ConversationReader reader = new ConversationReader(getCursor(start, length))) {
       ThreadRecord record;
-      while ((record = reader.getNext()) != null && effectiveCount < totalCount && !isInvalid()) {
-        conversations.add(new Conversation(record));
-        recipients.add(record.getRecipient());
-        effectiveCount++;
-      }
-    }
-
-    ApplicationDependencies.getRecipientCache().addToCache(recipients);
-
-    if (!isInvalid()) {
-      SizeFixResult<Conversation> result = SizeFixResult.ensureMultipleOfPageSize(conversations, params.requestedStartPosition, params.pageSize, totalCount);
-      callback.onResult(result.getItems(), params.requestedStartPosition, result.getTotal());
-      Log.d(TAG, "[Initial Load] " + (System.currentTimeMillis() - start) + " ms | start: " + params.requestedStartPosition + ", requestedSize: " + params.requestedLoadSize + ", actualSize: " + result.getItems().size() + ", totalCount: " + result.getTotal() + ", class: " + getClass().getSimpleName());
-    } else {
-      Log.d(TAG, "[Initial Load] " + (System.currentTimeMillis() - start) + " ms | start: " + params.requestedStartPosition + ", requestedSize: " + params.requestedLoadSize + ", totalCount: " + totalCount + ", class: " + getClass().getSimpleName() + " -- invalidated");
-    }
-  }
-
-  @Override
-  public final void loadRange(@NonNull LoadRangeParams params, @NonNull LoadRangeCallback<Conversation> callback) {
-    long start = System.currentTimeMillis();
-
-    List<Conversation> conversations = new ArrayList<>(params.loadSize);
-    List<Recipient>    recipients    = new LinkedList<>();
-
-    try (ConversationReader reader = new ConversationReader(getCursor(params.startPosition, params.loadSize))) {
-      ThreadRecord record;
-      while ((record = reader.getNext()) != null && !isInvalid()) {
+      while ((record = reader.getNext()) != null && !cancellationSignal.isCanceled()) {
         conversations.add(new Conversation(record));
         recipients.add(record.getRecipient());
       }
     }
 
+    stopwatch.split("cursor");
+
     ApplicationDependencies.getRecipientCache().addToCache(recipients);
 
-    callback.onResult(conversations);
+    stopwatch.split("cache-recipients");
 
-    Log.d(TAG, "[Update] " + (System.currentTimeMillis() - start) + " ms | start: " + params.startPosition + ", size: " + params.loadSize + ", class: " + getClass().getSimpleName() + (isInvalid() ? " -- invalidated" : ""));
+    stopwatch.stop(TAG);
+
+    return conversations;
   }
 
   protected abstract int getTotalCount();
@@ -124,8 +78,8 @@ abstract class ConversationListDataSource extends PositionalDataSource<Conversat
 
   private static class ArchivedConversationListDataSource extends ConversationListDataSource {
 
-    ArchivedConversationListDataSource(@NonNull Context context, @NonNull Invalidator invalidator) {
-      super(context, invalidator);
+    ArchivedConversationListDataSource(@NonNull Context context) {
+      super(context);
     }
 
     @Override
@@ -147,8 +101,8 @@ abstract class ConversationListDataSource extends PositionalDataSource<Conversat
     private int archivedCount;
     private int unpinnedCount;
 
-    UnarchivedConversationListDataSource(@NonNull Context context, @NonNull Invalidator invalidator) {
-      super(context, invalidator);
+    UnarchivedConversationListDataSource(@NonNull Context context) {
+      super(context);
     }
 
     @Override
@@ -158,14 +112,27 @@ abstract class ConversationListDataSource extends PositionalDataSource<Conversat
       pinnedCount   = threadDatabase.getPinnedConversationListCount();
       archivedCount = threadDatabase.getArchivedConversationListCount();
       unpinnedCount = unarchivedCount - pinnedCount;
-      totalCount    = unarchivedCount + (archivedCount != 0 ? 1 : 0) + (pinnedCount != 0 ? (unpinnedCount != 0 ? 2 : 1) : 0);
+      totalCount    = unarchivedCount;
+
+      if (archivedCount != 0) {
+        totalCount++;
+      }
+
+      if (pinnedCount != 0) {
+        if (unpinnedCount != 0) {
+          totalCount += 2;
+        } else {
+          totalCount += 1;
+        }
+      }
 
       return totalCount;
     }
 
     @Override
     protected Cursor getCursor(long offset, long limit) {
-      List<Cursor> cursors = new ArrayList<>(5);
+      List<Cursor> cursors       = new ArrayList<>(5);
+      long         originalLimit = limit;
 
       if (offset == 0 && hasPinnedHeader()) {
         MatrixCursor pinnedHeaderCursor = new MatrixCursor(ConversationReader.HEADER_COLUMN);
@@ -189,7 +156,7 @@ abstract class ConversationListDataSource extends PositionalDataSource<Conversat
       Cursor unpinnedCursor = threadDatabase.getUnarchivedConversationList(false, unpinnedOffset, limit);
       cursors.add(unpinnedCursor);
 
-      if (offset + limit >= totalCount && hasArchivedFooter()) {
+      if (offset + originalLimit >= totalCount && hasArchivedFooter()) {
         MatrixCursor archivedFooterCursor = new MatrixCursor(ConversationReader.ARCHIVED_COLUMNS);
         archivedFooterCursor.addRow(ConversationReader.createArchivedFooterRow(archivedCount));
         cursors.add(archivedFooterCursor);
@@ -218,22 +185,4 @@ abstract class ConversationListDataSource extends PositionalDataSource<Conversat
       return archivedCount != 0;
     }
   }
-
-  static class Factory extends DataSource.Factory<Integer, Conversation> {
-
-    private final Context     context;
-    private final Invalidator invalidator;
-    private final boolean     isArchived;
-
-    public Factory(@NonNull Context context, @NonNull Invalidator invalidator, boolean isArchived) {
-      this.context     = context;
-      this.invalidator = invalidator;
-      this.isArchived  = isArchived;
-    }
-
-    @Override
-    public @NonNull DataSource<Integer, Conversation> create() {
-      return ConversationListDataSource.create(context, invalidator, isArchived);
-    }
-  }
 }

app/src/main/java/org/thoughtcrime/securesms/conversationlist/ConversationListFragment.java

@@ -80,7 +80,6 @@ import org.thoughtcrime.securesms.components.RatingManager;
 import org.thoughtcrime.securesms.components.SearchToolbar;
 import org.thoughtcrime.securesms.components.recyclerview.DeleteItemAnimator;
 import org.thoughtcrime.securesms.components.registration.PulsingFloatingActionButton;
-import org.thoughtcrime.securesms.components.reminder.DefaultSmsReminder;
 import org.thoughtcrime.securesms.components.reminder.DozeReminder;
 import org.thoughtcrime.securesms.components.reminder.ExpiredBuildReminder;
 import org.thoughtcrime.securesms.components.reminder.OutdatedBuildReminder;
@@ -88,8 +87,6 @@ import org.thoughtcrime.securesms.components.reminder.PushRegistrationReminder;
 import org.thoughtcrime.securesms.components.reminder.Reminder;
 import org.thoughtcrime.securesms.components.reminder.ReminderView;
 import org.thoughtcrime.securesms.components.reminder.ServiceOutageReminder;
-import org.thoughtcrime.securesms.components.reminder.ShareReminder;
-import org.thoughtcrime.securesms.components.reminder.SystemSmsImportReminder;
 import org.thoughtcrime.securesms.components.reminder.UnauthorizedReminder;
 import org.thoughtcrime.securesms.conversation.ConversationFragment;
 import org.thoughtcrime.securesms.conversationlist.model.Conversation;
@@ -103,6 +100,7 @@ import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.events.ReminderUpdateEvent;
 import org.thoughtcrime.securesms.insights.InsightsLauncher;
 import org.thoughtcrime.securesms.jobs.ServiceOutageDetectionJob;
+import org.thoughtcrime.securesms.keyvalue.SignalStore;
 import org.thoughtcrime.securesms.lock.v2.CreateKbsPinActivity;
 import org.thoughtcrime.securesms.mediasend.MediaSendActivity;
 import org.thoughtcrime.securesms.megaphone.Megaphone;
@@ -116,18 +114,19 @@ import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.service.KeyCachingService;
 import org.thoughtcrime.securesms.sms.MessageSender;
 import org.thoughtcrime.securesms.storage.StorageSyncHelper;
-import org.thoughtcrime.securesms.tracing.Trace;
+import org.thoughtcrime.securesms.util.AppStartup;
 import org.thoughtcrime.securesms.util.AvatarUtil;
 import org.thoughtcrime.securesms.util.PlayStoreUtil;
 import org.thoughtcrime.securesms.util.ServiceUtil;
 import org.thoughtcrime.securesms.util.SnapToTopDataObserver;
 import org.thoughtcrime.securesms.util.StickyHeaderDecoration;
+import org.thoughtcrime.securesms.util.Stopwatch;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
-import org.thoughtcrime.securesms.util.Util;
 import org.thoughtcrime.securesms.util.ViewUtil;
 import org.thoughtcrime.securesms.util.WindowUtil;
 import org.thoughtcrime.securesms.util.concurrent.SimpleTask;
 import org.thoughtcrime.securesms.util.task.SnackbarAsyncTask;
+import org.thoughtcrime.securesms.util.views.Stub;
 import org.whispersystems.libsignal.util.guava.Optional;
 
 import java.util.Collections;
@@ -141,7 +140,6 @@ import java.util.Set;
 import static android.app.Activity.RESULT_OK;
 
 
-@Trace
 public class ConversationListFragment extends MainFragment implements ActionMode.Callback,
                                                                       ConversationListAdapter.OnConversationClickListener,
                                                                       ConversationListSearchAdapter.EventListener,
@@ -155,21 +153,14 @@ public class ConversationListFragment extends MainFragment implements ActionMode
 
   private static final int MAXIMUM_PINNED_CONVERSATIONS = 4;
 
-  private static final int[] EMPTY_IMAGES = new int[] { R.drawable.empty_inbox_1,
-                                                        R.drawable.empty_inbox_2,
-                                                        R.drawable.empty_inbox_3,
-                                                        R.drawable.empty_inbox_4,
-                                                        R.drawable.empty_inbox_5 };
-
   private ActionMode                        actionMode;
   private RecyclerView                      list;
-  private ReminderView                      reminderView;
-  private View                              emptyState;
-  private ImageView                         emptyImage;
+  private Stub<ReminderView>                reminderView;
+  private Stub<ViewGroup>                   emptyState;
   private TextView                          searchEmptyState;
   private PulsingFloatingActionButton       fab;
   private PulsingFloatingActionButton       cameraFab;
-  private SearchToolbar                     searchToolbar;
+  private Stub<SearchToolbar>               searchToolbar;
   private ImageView                         searchAction;
   private View                              toolbarShadow;
   private ConversationListViewModel         viewModel;
@@ -177,11 +168,13 @@ public class ConversationListFragment extends MainFragment implements ActionMode
   private ConversationListAdapter           defaultAdapter;
   private ConversationListSearchAdapter     searchAdapter;
   private StickyHeaderDecoration            searchAdapterDecoration;
-  private ViewGroup                         megaphoneContainer;
+  private Stub<ViewGroup>                   megaphoneContainer;
   private SnapToTopDataObserver             snapToTopDataObserver;
   private Drawable                          archiveDrawable;
   private LifecycleObserver                 visibilityLifecycleObserver;
 
+  private Stopwatch startupStopwatch;
+
   public static ConversationListFragment newInstance() {
     return new ConversationListFragment();
   }
@@ -190,6 +183,7 @@ public class ConversationListFragment extends MainFragment implements ActionMode
   public void onCreate(Bundle icicle) {
     super.onCreate(icicle);
     setHasOptionsMenu(true);
+    startupStopwatch = new Stopwatch("startup");
   }
 
   @Override
@@ -199,28 +193,24 @@ public class ConversationListFragment extends MainFragment implements ActionMode
 
   @Override
   public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
-    reminderView       = view.findViewById(R.id.reminder);
     list               = view.findViewById(R.id.list);
     fab                = view.findViewById(R.id.fab);
     cameraFab          = view.findViewById(R.id.camera_fab);
-    emptyState         = view.findViewById(R.id.empty_state);
-    emptyImage         = view.findViewById(R.id.empty);
     searchEmptyState   = view.findViewById(R.id.search_no_results);
-    searchToolbar      = view.findViewById(R.id.search_toolbar);
     searchAction       = view.findViewById(R.id.search_action);
     toolbarShadow      = view.findViewById(R.id.conversation_list_toolbar_shadow);
-    megaphoneContainer = view.findViewById(R.id.megaphone_container);
+    reminderView       = new Stub<>(view.findViewById(R.id.reminder));
+    emptyState         = new Stub<>(view.findViewById(R.id.empty_state));
+    searchToolbar      = new Stub<>(view.findViewById(R.id.search_toolbar));
+    megaphoneContainer = new Stub<>(view.findViewById(R.id.megaphone_container));
 
-    Toolbar toolbar = view.findViewById(getToolbarRes());
+    Toolbar toolbar = getToolbar(view);
     toolbar.setVisibility(View.VISIBLE);
     ((AppCompatActivity) requireActivity()).setSupportActionBar(toolbar);
 
     fab.show();
     cameraFab.show();
 
-    reminderView.setOnDismissListener(this::updateReminders);
-    reminderView.setOnActionClickListener(this::onReminderAction);
-
     list.setLayoutManager(new LinearLayoutManager(requireActivity()));
     list.setItemAnimator(new DeleteItemAnimator());
     list.addOnScrollListener(new ScrollListener());
@@ -241,8 +231,8 @@ public class ConversationListFragment extends MainFragment implements ActionMode
                  .execute();
     });
 
-    initializeListAdapters();
     initializeViewModel();
+    initializeListAdapters();
     initializeTypingObserver();
     initializeSearchListener();
 
@@ -264,7 +254,7 @@ public class ConversationListFragment extends MainFragment implements ActionMode
 
     SimpleTask.run(getViewLifecycleOwner().getLifecycle(), Recipient::self, this::initializeProfileIcon);
 
-    if (!searchToolbar.isVisible() && list.getAdapter() != defaultAdapter) {
+    if ((!searchToolbar.resolved() || !searchToolbar.get().isVisible()) && list.getAdapter() != defaultAdapter) {
       list.removeItemDecoration(searchAdapterDecoration);
       setAdapter(defaultAdapter);
     }
@@ -330,10 +320,10 @@ public class ConversationListFragment extends MainFragment implements ActionMode
   }
 
   private boolean closeSearchIfOpen() {
-    if (searchToolbar.isVisible() || activeAdapter == searchAdapter) {
+    if ((searchToolbar.resolved() && searchToolbar.get().isVisible()) || activeAdapter == searchAdapter) {
       list.removeItemDecoration(searchAdapterDecoration);
       setAdapter(defaultAdapter);
-      searchToolbar.collapse();
+      searchToolbar.get().collapse();
       return true;
     }
 
@@ -430,6 +420,11 @@ public class ConversationListFragment extends MainFragment implements ActionMode
     dialogFragment.show(getChildFragmentManager(), "megaphone_dialog");
   }
 
+  private void initializeReminderView() {
+    reminderView.get().setOnDismissListener(this::updateReminders);
+    reminderView.get().setOnActionClickListener(this::onReminderAction);
+  }
+
   private void onReminderAction(@IdRes int reminderActionId) {
     if (reminderActionId == R.id.reminder_action_update_now) {
       PlayStoreUtil.openPlayStoreOrOurApkDownloadPage(requireContext());
@@ -450,36 +445,36 @@ public class ConversationListFragment extends MainFragment implements ActionMode
 
   private void initializeSearchListener() {
     searchAction.setOnClickListener(v -> {
-      searchToolbar.display(searchAction.getX() + (searchAction.getWidth() / 2.0f),
-                            searchAction.getY() + (searchAction.getHeight() / 2.0f));
-    });
+      searchToolbar.get().display(searchAction.getX() + (searchAction.getWidth() / 2.0f),
+                                  searchAction.getY() + (searchAction.getHeight() / 2.0f));
 
-    searchToolbar.setListener(new SearchToolbar.SearchListener() {
-      @Override
-      public void onSearchTextChange(String text) {
-        String trimmed = text.trim();
+      searchToolbar.get().setListener(new SearchToolbar.SearchListener() {
+        @Override
+        public void onSearchTextChange(String text) {
+          String trimmed = text.trim();
 
-        viewModel.updateQuery(trimmed);
+          viewModel.updateQuery(trimmed);
 
-        if (trimmed.length() > 0) {
-          if (activeAdapter != searchAdapter) {
-            setAdapter(searchAdapter);
-            list.removeItemDecoration(searchAdapterDecoration);
-            list.addItemDecoration(searchAdapterDecoration);
-          }
-        } else {
-          if (activeAdapter != defaultAdapter) {
-            list.removeItemDecoration(searchAdapterDecoration);
-            setAdapter(defaultAdapter);
+          if (trimmed.length() > 0) {
+            if (activeAdapter != searchAdapter) {
+              setAdapter(searchAdapter);
+              list.removeItemDecoration(searchAdapterDecoration);
+              list.addItemDecoration(searchAdapterDecoration);
+            }
+          } else {
+            if (activeAdapter != defaultAdapter) {
+              list.removeItemDecoration(searchAdapterDecoration);
+              setAdapter(defaultAdapter);
+            }
           }
         }
-      }
 
-      @Override
-      public void onSearchClosed() {
-        list.removeItemDecoration(searchAdapterDecoration);
-        setAdapter(defaultAdapter);
-      }
+        @Override
+        public void onSearchClosed() {
+          list.removeItemDecoration(searchAdapterDecoration);
+          setAdapter(defaultAdapter);
+        }
+      });
     });
   }
 
@@ -489,6 +484,19 @@ public class ConversationListFragment extends MainFragment implements ActionMode
     searchAdapterDecoration = new StickyHeaderDecoration(searchAdapter, false, false);
 
     setAdapter(defaultAdapter);
+
+    defaultAdapter.registerAdapterDataObserver(new RecyclerView.AdapterDataObserver() {
+      @Override
+      public void onItemRangeInserted(int positionStart, int itemCount) {
+        startupStopwatch.split("data-set");
+        defaultAdapter.unregisterAdapterDataObserver(this);
+        list.post(() -> {
+          AppStartup.getInstance().onCriticalRenderEventEnd();
+          startupStopwatch.split("first-render");
+          startupStopwatch.stop(TAG);
+        });
+      }
+    });
   }
 
   @SuppressWarnings("rawtypes")
@@ -501,6 +509,10 @@ public class ConversationListFragment extends MainFragment implements ActionMode
       return;
     }
 
+    if (adapter instanceof ConversationListAdapter) {
+      ((ConversationListAdapter) adapter).setPagingController(viewModel.getPagingController());
+    }
+
     list.setAdapter(adapter);
 
     if (adapter == defaultAdapter) {
@@ -554,20 +566,22 @@ public class ConversationListFragment extends MainFragment implements ActionMode
 
   private void onMegaphoneChanged(@Nullable Megaphone megaphone) {
     if (megaphone == null) {
-      megaphoneContainer.setVisibility(View.GONE);
-      megaphoneContainer.removeAllViews();
+      if (megaphoneContainer.resolved()) {
+        megaphoneContainer.get().setVisibility(View.GONE);
+        megaphoneContainer.get().removeAllViews();
+      }
       return;
     }
 
     View view = MegaphoneViewBuilder.build(requireContext(), megaphone, this);
 
-    megaphoneContainer.removeAllViews();
+    megaphoneContainer.get().removeAllViews();
 
     if (view != null) {
-      megaphoneContainer.addView(view);
-      megaphoneContainer.setVisibility(View.VISIBLE);
+      megaphoneContainer.get().addView(view);
+      megaphoneContainer.get().setVisibility(View.VISIBLE);
     } else {
-      megaphoneContainer.setVisibility(View.GONE);
+      megaphoneContainer.get().setVisibility(View.GONE);
 
       if (megaphone.getOnVisibleListener() != null) {
         megaphone.getOnVisibleListener().onEvent(megaphone, this);
@@ -590,14 +604,8 @@ public class ConversationListFragment extends MainFragment implements ActionMode
         return Optional.of(new ServiceOutageReminder(context));
       } else if (OutdatedBuildReminder.isEligible()) {
         return Optional.of(new OutdatedBuildReminder(context));
-      } else if (DefaultSmsReminder.isEligible(context)) {
-        return Optional.of(new DefaultSmsReminder(this, SMS_ROLE_REQUEST_CODE));
-      } else if (Util.isDefaultSmsProvider(context) && SystemSmsImportReminder.isEligible(context)) {
-        return Optional.of((new SystemSmsImportReminder(context)));
       } else if (PushRegistrationReminder.isEligible(context)) {
         return Optional.of((new PushRegistrationReminder(context)));
-      } else if (ShareReminder.isEligible(context)) {
-        return Optional.of(new ShareReminder(context));
       } else if (DozeReminder.isEligible(context)) {
         return Optional.of(new DozeReminder(context));
       } else {
@@ -605,9 +613,12 @@ public class ConversationListFragment extends MainFragment implements ActionMode
       }
     }, reminder -> {
       if (reminder.isPresent() && getActivity() != null && !isRemoving()) {
-        reminderView.showReminder(reminder.get());
-      } else if (!reminder.isPresent()) {
-        reminderView.hide();
+        if (!reminderView.resolved()) {
+          initializeReminderView();
+        }
+        reminderView.get().showReminder(reminder.get());
+      } else if (reminderView.resolved() && !reminder.isPresent()) {
+        reminderView.get().hide();
       }
     });
   }
@@ -819,33 +830,37 @@ public class ConversationListFragment extends MainFragment implements ActionMode
     getNavigator().goToConversation(recipient.getId(), threadId, distributionType, -1);
   }
 
-  private void onSubmitList(@NonNull ConversationListViewModel.ConversationList conversationList) {
-    if (conversationList.getConversations().isDetached()) {
-      return;
-    }
-
-    defaultAdapter.submitList(conversationList.getConversations());
-
-    onPostSubmitList();
+  private void onSubmitList(@NonNull List<Conversation> conversationList) {
+    defaultAdapter.submitList(conversationList);
+    onPostSubmitList(conversationList.size());
   }
 
-  private void updateEmptyState(boolean isConversationEmpty) {
+  void updateEmptyState(boolean isConversationEmpty) {
     if (isConversationEmpty) {
       Log.i(TAG, "Received an empty data set.");
       list.setVisibility(View.INVISIBLE);
-      emptyState.setVisibility(View.VISIBLE);
-      emptyImage.setImageResource(EMPTY_IMAGES[(int) (Math.random() * EMPTY_IMAGES.length)]);
+      emptyState.get().setVisibility(View.VISIBLE);
       fab.startPulse(3 * 1000);
       cameraFab.startPulse(3 * 1000);
+
+      SignalStore.onboarding().setShowNewGroup(true);
+      SignalStore.onboarding().setShowInviteFriends(true);
     } else {
       list.setVisibility(View.VISIBLE);
-      emptyState.setVisibility(View.GONE);
       fab.stopPulse();
       cameraFab.stopPulse();
+
+      if (emptyState.resolved()) {
+        emptyState.get().setVisibility(View.GONE);
+      }
     }
   }
 
-  protected void onPostSubmitList() {
+  protected void onPostSubmitList(int conversationCount) {
+    if (conversationCount >= 6 && (SignalStore.onboarding().shouldShowInviteFriends() || SignalStore.onboarding().shouldShowNewGroup())) {
+      SignalStore.onboarding().clearAll();
+      ApplicationDependencies.getMegaphoneRepository().markFinished(Megaphones.Event.ONBOARDING);
+    }
   }
 
   @Override
@@ -975,8 +990,8 @@ public class ConversationListFragment extends MainFragment implements ActionMode
     }
   }
 
-  protected @IdRes int getToolbarRes() {
-    return R.id.toolbar;
+  protected Toolbar getToolbar(@NonNull View rootView) {
+    return rootView.findViewById(R.id.toolbar);
   }
 
   protected @PluralsRes int getArchivedSnackbarTitleRes() {

app/src/main/java/org/thoughtcrime/securesms/conversationlist/ConversationListItem.java

@@ -20,18 +20,18 @@ import android.content.Context;
 import android.content.res.ColorStateList;
 import android.graphics.Typeface;
 import android.graphics.drawable.RippleDrawable;
-import android.os.Build.VERSION;
+import android.os.Build;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.style.StyleSpan;
 import android.util.AttributeSet;
 import android.view.View;
-import android.widget.RelativeLayout;
 import android.widget.TextView;
 
 import androidx.annotation.ColorInt;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.constraintlayout.widget.ConstraintLayout;
 import androidx.core.content.ContextCompat;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.Observer;
@@ -64,7 +64,6 @@ import org.thoughtcrime.securesms.util.Debouncer;
 import org.thoughtcrime.securesms.util.ExpirationUtil;
 import org.thoughtcrime.securesms.util.MediaUtil;
 import org.thoughtcrime.securesms.util.SearchUtil;
-import org.thoughtcrime.securesms.util.ViewUtil;
 import org.thoughtcrime.securesms.util.livedata.LiveDataUtil;
 
 import java.util.Collections;
@@ -73,7 +72,7 @@ import java.util.Set;
 
 import static org.thoughtcrime.securesms.database.model.LiveUpdateMessage.recipientToStringAsync;
 
-public final class ConversationListItem extends RelativeLayout
+public final class ConversationListItem extends ConstraintLayout
                                         implements RecipientForeverObserver,
                                                    BindableConversationListItem,
                                                    Unbindable,
@@ -90,7 +89,6 @@ public final class ConversationListItem extends RelativeLayout
   private LiveRecipient       recipient;
   private long                threadId;
   private GlideRequests       glideRequests;
-  private View                subjectContainer;
   private TextView            subjectView;
   private TypingIndicatorView typingView;
   private FromTextView        fromView;
@@ -122,21 +120,17 @@ public final class ConversationListItem extends RelativeLayout
   @Override
   protected void onFinishInflate() {
     super.onFinishInflate();
-    this.subjectContainer        = findViewById(R.id.subject_container);
-    this.subjectView             = findViewById(R.id.subject);
-    this.typingView              = findViewById(R.id.typing_indicator);
-    this.fromView                = findViewById(R.id.from);
-    this.dateView                = findViewById(R.id.date);
-    this.deliveryStatusIndicator = findViewById(R.id.delivery_status);
-    this.alertView               = findViewById(R.id.indicators_parent);
-    this.contactPhotoImage       = findViewById(R.id.contact_photo_image);
-    this.thumbnailView           = findViewById(R.id.thumbnail);
-    this.archivedView            = findViewById(R.id.archived);
-    this.unreadIndicator         = findViewById(R.id.unread_indicator);
+    this.subjectView             = findViewById(R.id.conversation_list_item_summary);
+    this.typingView              = findViewById(R.id.conversation_list_item_typing_indicator);
+    this.fromView                = findViewById(R.id.conversation_list_item_name);
+    this.dateView                = findViewById(R.id.conversation_list_item_date);
+    this.deliveryStatusIndicator = findViewById(R.id.conversation_list_item_status);
+    this.alertView               = findViewById(R.id.conversation_list_item_alert);
+    this.contactPhotoImage       = findViewById(R.id.conversation_list_item_avatar);
+    this.thumbnailView           = findViewById(R.id.conversation_list_item_thumbnail);
+    this.archivedView            = findViewById(R.id.conversation_list_item_archived);
+    this.unreadIndicator         = findViewById(R.id.conversation_list_item_unread_indicator);
     thumbnailView.setClickable(false);
-
-    ViewUtil.setTextViewGravityStart(this.fromView, getContext());
-    ViewUtil.setTextViewGravityStart(this.subjectView, getContext());
   }
 
   @Override
@@ -158,19 +152,17 @@ public final class ConversationListItem extends RelativeLayout
                    boolean batchMode,
                    @Nullable String highlightSubstring)
   {
-    if (this.recipient != null) this.recipient.removeForeverObserver(this);
+    observeRecipient(thread.getRecipient().live());
     observeDisplayBody(null);
     setSubjectViewText(null);
 
     this.selectedThreads = selectedThreads;
-    this.recipient       = thread.getRecipient().live();
     this.threadId        = thread.getThreadId();
     this.glideRequests   = glideRequests;
     this.unreadCount     = thread.getUnreadCount();
     this.lastSeen        = thread.getLastSeen();
     this.thread          = thread;
 
-    this.recipient.observeForever(this);
     if (highlightSubstring != null) {
       String name = recipient.get().isSelf() ? getContext().getString(R.string.note_to_self) : recipient.get().getDisplayName(getContext());
 
@@ -215,15 +207,13 @@ public final class ConversationListItem extends RelativeLayout
                    @NonNull  Locale        locale,
                    @Nullable String        highlightSubstring)
   {
-    if (this.recipient != null) this.recipient.removeForeverObserver(this);
+    observeRecipient(contact.live());
     observeDisplayBody(null);
     setSubjectViewText(null);
 
     this.selectedThreads = Collections.emptySet();
-    this.recipient       = contact.live();
     this.glideRequests   = glideRequests;
 
-    this.recipient.observeForever(this);
 
     fromView.setText(contact);
     fromView.setText(SearchUtil.getHighlightedSpan(locale, () -> new StyleSpan(Typeface.BOLD), new SpannableString(fromView.getText()), highlightSubstring));
@@ -245,16 +235,13 @@ public final class ConversationListItem extends RelativeLayout
                    @NonNull  Locale        locale,
                    @Nullable String        highlightSubstring)
   {
-    if (this.recipient != null) this.recipient.removeForeverObserver(this);
+    observeRecipient(messageResult.conversationRecipient.live());
     observeDisplayBody(null);
     setSubjectViewText(null);
 
     this.selectedThreads = Collections.emptySet();
-    this.recipient       = messageResult.conversationRecipient.live();
     this.glideRequests   = glideRequests;
 
-    this.recipient.observeForever(this);
-
     fromView.setText(recipient.get(), true);
     setSubjectViewText(SearchUtil.getHighlightedSpan(locale, () -> new StyleSpan(Typeface.BOLD), messageResult.bodySnippet, highlightSubstring));
     dateView.setText(DateUtils.getBriefRelativeTimeSpanString(getContext(), locale, messageResult.receivedTimestampMs));
@@ -272,9 +259,7 @@ public final class ConversationListItem extends RelativeLayout
   @Override
   public void unbind() {
     if (this.recipient != null) {
-      this.recipient.removeForeverObserver(this);
-      this.recipient = null;
-
+      observeRecipient(null);
       setBatchMode(false);
       contactPhotoImage.setAvatar(glideRequests, null, !batchMode);
     }
@@ -323,6 +308,18 @@ public final class ConversationListItem extends RelativeLayout
     return lastSeen;
   }
 
+  private void observeRecipient(@Nullable LiveRecipient newRecipient) {
+    if (this.recipient != null) {
+      this.recipient.removeForeverObserver(this);
+    }
+
+    this.recipient = newRecipient;
+
+    if (this.recipient != null) {
+      this.recipient.observeForever(this);
+    }
+  }
+
   private void observeDisplayBody(@Nullable LiveData<SpannableString> displayBody) {
     if (this.displayBody != null) {
       this.displayBody.removeObserver(this);
@@ -349,19 +346,8 @@ public final class ConversationListItem extends RelativeLayout
     if (thread.getSnippetUri() != null) {
       this.thumbnailView.setVisibility(View.VISIBLE);
       this.thumbnailView.setImageResource(glideRequests, thread.getSnippetUri());
-
-      LayoutParams subjectParams = (RelativeLayout.LayoutParams)this.subjectContainer .getLayoutParams();
-      subjectParams.addRule(RelativeLayout.LEFT_OF, R.id.thumbnail);
-      subjectParams.addRule(RelativeLayout.START_OF, R.id.thumbnail);
-      this.subjectContainer.setLayoutParams(subjectParams);
-      this.post(new ThumbnailPositioner(thumbnailView, archivedView, deliveryStatusIndicator, dateView));
     } else {
       this.thumbnailView.setVisibility(View.GONE);
-
-      LayoutParams subjectParams = (RelativeLayout.LayoutParams)this.subjectContainer.getLayoutParams();
-      subjectParams.addRule(RelativeLayout.LEFT_OF, R.id.status);
-      subjectParams.addRule(RelativeLayout.START_OF, R.id.status);
-      this.subjectContainer.setLayoutParams(subjectParams);
     }
   }
 
@@ -403,7 +389,7 @@ public final class ConversationListItem extends RelativeLayout
   }
 
   private void setRippleColor(Recipient recipient) {
-    if (VERSION.SDK_INT >= 21) {
+    if (Build.VERSION.SDK_INT >= 21) {
       ((RippleDrawable)(getBackground()).mutate())
           .setColor(ColorStateList.valueOf(recipient.getColor().toConversationColor(getContext())));
     }
@@ -421,6 +407,11 @@ public final class ConversationListItem extends RelativeLayout
 
   @Override
   public void onRecipientChanged(@NonNull Recipient recipient) {
+    if (this.recipient == null || !this.recipient.getId().equals(recipient.getId())) {
+      Log.w(TAG, "Bad change! Local recipient doesn't match. Ignoring. Local: " + (this.recipient == null ? "null" : this.recipient.getId()) + ", Changed: " + recipient.getId());
+      return;
+    }
+
     fromView.setText(recipient, unreadCount == 0);
     contactPhotoImage.setAvatar(glideRequests, recipient, !batchMode);
     setRippleColor(recipient);
@@ -443,7 +434,8 @@ public final class ConversationListItem extends RelativeLayout
     } else if (SmsDatabase.Types.isKeyExchangeType(thread.getType())) {
       return emphasisAdded(context, context.getString(R.string.ConversationListItem_key_exchange_message), defaultTint);
     } else if (SmsDatabase.Types.isFailedDecryptType(thread.getType())) {
-      return emphasisAdded(context, context.getString(R.string.MessageDisplayHelper_bad_encrypted_message), defaultTint);
+      UpdateDescription description = UpdateDescription.staticDescription(context.getString(R.string.ThreadRecord_chat_session_refreshed), R.drawable.ic_refresh_16);
+      return emphasisAdded(context, description, defaultTint);
     } else if (SmsDatabase.Types.isNoRemoteSessionType(thread.getType())) {
       return emphasisAdded(context, context.getString(R.string.MessageDisplayHelper_message_encrypted_for_non_existing_session), defaultTint);
     } else if (SmsDatabase.Types.isEndSessionType(thread.getType())) {
@@ -549,37 +541,4 @@ public final class ConversationListItem extends RelativeLayout
       updateTypingIndicator(typingThreads);
     }
   }
-
-  private static class ThumbnailPositioner implements Runnable {
-
-    private final View thumbnailView;
-    private final View archivedView;
-    private final View deliveryStatusView;
-    private final View dateView;
-
-    ThumbnailPositioner(View thumbnailView, View archivedView, View deliveryStatusView, View dateView) {
-      this.thumbnailView      = thumbnailView;
-      this.archivedView       = archivedView;
-      this.deliveryStatusView = deliveryStatusView;
-      this.dateView           = dateView;
-    }
-
-    @Override
-    public void run() {
-      LayoutParams thumbnailParams = (RelativeLayout.LayoutParams)thumbnailView.getLayoutParams();
-
-      if (archivedView.getVisibility() == View.VISIBLE &&
-          (archivedView.getWidth() + deliveryStatusView.getWidth()) > dateView.getWidth())
-      {
-        thumbnailParams.addRule(RelativeLayout.LEFT_OF, R.id.status);
-        thumbnailParams.addRule(RelativeLayout.START_OF, R.id.status);
-      } else {
-        thumbnailParams.addRule(RelativeLayout.LEFT_OF, R.id.date);
-        thumbnailParams.addRule(RelativeLayout.START_OF, R.id.date);
-      }
-
-      thumbnailView.setLayoutParams(thumbnailParams);
-    }
-  }
-
 }

app/src/main/java/org/thoughtcrime/securesms/conversationlist/ConversationListItemAction.java

@@ -4,6 +4,7 @@ import android.annotation.TargetApi;
 import android.content.Context;
 import android.os.Build;
 import android.util.AttributeSet;
+import android.widget.FrameLayout;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
@@ -13,12 +14,11 @@ import org.thoughtcrime.securesms.BindableConversationListItem;
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.database.model.ThreadRecord;
 import org.thoughtcrime.securesms.mms.GlideRequests;
-import org.thoughtcrime.securesms.util.ViewUtil;
 
 import java.util.Locale;
 import java.util.Set;
 
-public class ConversationListItemAction extends LinearLayout implements BindableConversationListItem {
+public class ConversationListItemAction extends FrameLayout implements BindableConversationListItem {
 
   private TextView description;
 
@@ -38,7 +38,7 @@ public class ConversationListItemAction extends LinearLayout implements Bindable
   @Override
   public void onFinishInflate() {
     super.onFinishInflate();
-    this.description = ViewUtil.findById(this, R.id.description);
+    this.description = findViewById(R.id.description);
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/conversationlist/ConversationListViewModel.java

@@ -1,26 +1,22 @@
 package org.thoughtcrime.securesms.conversationlist;
 
 import android.app.Application;
-import android.database.ContentObserver;
-import android.os.Handler;
 import android.text.TextUtils;
 
 import androidx.annotation.NonNull;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
-import androidx.lifecycle.Transformations;
 import androidx.lifecycle.ViewModel;
 import androidx.lifecycle.ViewModelProvider;
-import androidx.paging.DataSource;
-import androidx.paging.LivePagedListBuilder;
-import androidx.paging.PagedList;
 
-import org.signal.core.util.concurrent.SignalExecutors;
 import org.signal.core.util.logging.Log;
+import org.signal.paging.PagedData;
+import org.signal.paging.PagingConfig;
+import org.signal.paging.PagingController;
 import org.thoughtcrime.securesms.conversationlist.model.Conversation;
 import org.thoughtcrime.securesms.conversationlist.model.SearchResult;
-import org.thoughtcrime.securesms.database.DatabaseContentProviders;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
+import org.thoughtcrime.securesms.database.DatabaseObserver;
 import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 import org.thoughtcrime.securesms.megaphone.Megaphone;
 import org.thoughtcrime.securesms.megaphone.MegaphoneRepository;
@@ -28,80 +24,64 @@ import org.thoughtcrime.securesms.megaphone.Megaphones;
 import org.thoughtcrime.securesms.search.SearchRepository;
 import org.thoughtcrime.securesms.util.Debouncer;
 import org.thoughtcrime.securesms.util.Util;
+import org.thoughtcrime.securesms.util.livedata.LiveDataUtil;
 import org.thoughtcrime.securesms.util.paging.Invalidator;
 
-import java.util.Objects;
+import java.util.List;
 
 class ConversationListViewModel extends ViewModel {
 
   private static final String TAG = Log.tag(ConversationListViewModel.class);
 
-  private final Application                       application;
-  private final MutableLiveData<Megaphone>        megaphone;
-  private final MutableLiveData<SearchResult>     searchResult;
-  private final LiveData<ConversationList>        conversationList;
-  private final SearchRepository                  searchRepository;
-  private final MegaphoneRepository               megaphoneRepository;
-  private final Debouncer                         debouncer;
-  private final ContentObserver                   observer;
-  private final Invalidator                       invalidator;
+  private static boolean coldStart = true;
+
+  private final MutableLiveData<Megaphone>     megaphone;
+  private final MutableLiveData<SearchResult>  searchResult;
+  private final PagedData<Conversation>        pagedData;
+  private final LiveData<Boolean>              hasNoConversations;
+  private final SearchRepository               searchRepository;
+  private final MegaphoneRepository            megaphoneRepository;
+  private final Debouncer                      debouncer;
+  private final DatabaseObserver.Observer      observer;
+  private final Invalidator                    invalidator;
 
   private String lastQuery;
+  private int    pinnedCount;
 
   private ConversationListViewModel(@NonNull Application application, @NonNull SearchRepository searchRepository, boolean isArchived) {
-    this.application         = application;
     this.megaphone           = new MutableLiveData<>();
     this.searchResult        = new MutableLiveData<>();
     this.searchRepository    = searchRepository;
     this.megaphoneRepository = ApplicationDependencies.getMegaphoneRepository();
     this.debouncer           = new Debouncer(300);
     this.invalidator         = new Invalidator();
-    this.observer            = new ContentObserver(new Handler()) {
-      @Override
-      public void onChange(boolean selfChange) {
-        if (!TextUtils.isEmpty(getLastQuery())) {
-          searchRepository.query(getLastQuery(), searchResult::postValue);
-        }
+    this.pagedData           = PagedData.create(ConversationListDataSource.create(application, isArchived),
+                                                new PagingConfig.Builder()
+                                                                .setPageSize(15)
+                                                                .setBufferPages(2)
+                                                                .build());
+    this.observer            = () -> {
+      if (!TextUtils.isEmpty(getLastQuery())) {
+        searchRepository.query(getLastQuery(), searchResult::postValue);
       }
+      pagedData.getController().onDataInvalidated();
     };
 
-    DataSource.Factory<Integer, Conversation> factory = new ConversationListDataSource.Factory(application, invalidator, isArchived);
-    PagedList.Config                          config  = new PagedList.Config.Builder()
-                                                                            .setPageSize(15)
-                                                                            .setInitialLoadSizeHint(30)
-                                                                            .setEnablePlaceholders(true)
-                                                                            .build();
+    this.hasNoConversations = LiveDataUtil.mapAsync(pagedData.getData(), conversations -> {
+      pinnedCount = DatabaseFactory.getThreadDatabase(application).getPinnedConversationListCount();
 
-    LiveData<PagedList<Conversation>> conversationList = new LivePagedListBuilder<>(factory, config).setFetchExecutor(ConversationListDataSource.EXECUTOR)
-                                                                                                    .setInitialLoadKey(0)
-                                                                                                    .build();
-
-    application.getContentResolver().registerContentObserver(DatabaseContentProviders.ConversationList.CONTENT_URI, true, observer);
-
-    this.conversationList = Transformations.switchMap(conversationList, conversation -> {
-      if (conversation.getDataSource().isInvalid()) {
-        Log.w(TAG, "Received an invalid conversation list. Ignoring.");
-        return new MutableLiveData<>();
-      }
-
-      MutableLiveData<ConversationList> updated = new MutableLiveData<>();
-
-      if (isArchived) {
-        updated.postValue(new ConversationList(conversation, 0, 0));
+      if (conversations.size() > 0) {
+        return false;
       } else {
-        SignalExecutors.BOUNDED.execute(() -> {
-          int archiveCount = DatabaseFactory.getThreadDatabase(application).getArchivedConversationListCount();
-          int pinnedCount  = DatabaseFactory.getThreadDatabase(application).getPinnedConversationListCount();
-          updated.postValue(new ConversationList(conversation, archiveCount, pinnedCount));
-        });
+        return DatabaseFactory.getThreadDatabase(application).getArchivedConversationListCount() == 0;
       }
-
-      return updated;
     });
+
+    ApplicationDependencies.getDatabaseObserver().registerConversationListObserver(observer);
   }
 
   public LiveData<Boolean> hasNoConversations() {
-    return Transformations.map(getConversationList(), ConversationList::isEmpty);
+    return hasNoConversations;
   }
 
   @NonNull LiveData<SearchResult> getSearchResult() {
@@ -112,16 +92,26 @@ class ConversationListViewModel extends ViewModel {
     return megaphone;
   }
 
-  @NonNull LiveData<ConversationList> getConversationList() {
-    return conversationList;
+  @NonNull LiveData<List<Conversation>> getConversationList() {
+    return pagedData.getData();
+  }
+
+  @NonNull PagingController getPagingController() {
+    return pagedData.getController();
   }
 
   public int getPinnedCount() {
-    return Objects.requireNonNull(getConversationList().getValue()).pinnedCount;
+    return pinnedCount;
   }
 
   void onVisible() {
     megaphoneRepository.getNextMegaphone(megaphone::postValue);
+
+    if (!coldStart) {
+      ApplicationDependencies.getDatabaseObserver().notifyConversationListListeners();
+    }
+
+    coldStart = false;
   }
 
   void onMegaphoneCompleted(@NonNull Megaphones.Event event) {
@@ -157,7 +147,7 @@ class ConversationListViewModel extends ViewModel {
   protected void onCleared() {
     invalidator.invalidate();
     debouncer.clear();
-    application.getContentResolver().unregisterContentObserver(observer);
+    ApplicationDependencies.getDatabaseObserver().unregisterObserver(observer);
   }
 
   public static class Factory extends ViewModelProvider.NewInstanceFactory {
@@ -174,32 +164,4 @@ class ConversationListViewModel extends ViewModel {
       return modelClass.cast(new ConversationListViewModel(ApplicationDependencies.getApplication(), new SearchRepository(), isArchived));
     }
   }
-
-  final static class ConversationList {
-    private final PagedList<Conversation> conversations;
-    private final int                     archivedCount;
-    private final int                     pinnedCount;
-
-    ConversationList(PagedList<Conversation> conversations, int archivedCount, int pinnedCount) {
-      this.conversations = conversations;
-      this.archivedCount = archivedCount;
-      this.pinnedCount   = pinnedCount;
-    }
-
-    PagedList<Conversation> getConversations() {
-      return conversations;
-    }
-
-    int getArchivedCount() {
-      return archivedCount;
-    }
-
-    public int getPinnedCount() {
-      return pinnedCount;
-    }
-
-    boolean isEmpty() {
-      return conversations.isEmpty() && archivedCount == 0;
-    }
-  }
 }

app/src/main/java/org/thoughtcrime/securesms/crypto/DatabaseSecretProvider.java

@@ -11,18 +11,30 @@ import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import java.io.IOException;
 import java.security.SecureRandom;
 
-public class DatabaseSecretProvider {
+/**
+ * It can be rather expensive to read from the keystore, so this class caches the key in memory
+ * after it is created.
+ */
+public final class DatabaseSecretProvider {
 
-  @SuppressWarnings("unused")
-  private static final String TAG = DatabaseSecretProvider.class.getSimpleName();
+  private static volatile DatabaseSecret instance;
 
-  private final Context context;
+  public static DatabaseSecret getOrCreateDatabaseSecret(@NonNull Context context) {
+    if (instance == null) {
+      synchronized (DatabaseSecretProvider.class) {
+        if (instance == null) {
+          instance = getOrCreate(context);
+        }
+      }
+    }
 
-  public DatabaseSecretProvider(@NonNull Context context) {
-    this.context = context.getApplicationContext();
+    return instance;
   }
 
-  public DatabaseSecret getOrCreateDatabaseSecret() {
+  private DatabaseSecretProvider() {
+  }
+
+  private static @NonNull DatabaseSecret getOrCreate(@NonNull Context context) {
     String unencryptedSecret = TextSecurePreferences.getDatabaseUnencryptedSecret(context);
     String encryptedSecret   = TextSecurePreferences.getDatabaseEncryptedSecret(context);
 
@@ -31,12 +43,12 @@ public class DatabaseSecretProvider {
     else                                return createAndStoreDatabaseSecret(context);
   }
 
-  private DatabaseSecret getUnencryptedDatabaseSecret(@NonNull Context context, @NonNull String unencryptedSecret)
+  private static @NonNull DatabaseSecret getUnencryptedDatabaseSecret(@NonNull Context context, @NonNull String unencryptedSecret)
   {
     try {
       DatabaseSecret databaseSecret = new DatabaseSecret(unencryptedSecret);
 
-      if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+      if (Build.VERSION.SDK_INT < 23) {
         return databaseSecret;
       } else {
         KeyStoreHelper.SealedData encryptedSecret = KeyStoreHelper.seal(databaseSecret.asBytes());
@@ -51,8 +63,8 @@ public class DatabaseSecretProvider {
     }
   }
 
-  private DatabaseSecret getEncryptedDatabaseSecret(@NonNull String serializedEncryptedSecret) {
-    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+  private static @NonNull DatabaseSecret getEncryptedDatabaseSecret(@NonNull String serializedEncryptedSecret) {
+    if (Build.VERSION.SDK_INT < 23) {
       throw new AssertionError("OS downgrade not supported. KeyStore sealed data exists on platform < M!");
     } else {
       KeyStoreHelper.SealedData encryptedSecret = KeyStoreHelper.SealedData.fromString(serializedEncryptedSecret);
@@ -60,14 +72,14 @@ public class DatabaseSecretProvider {
     }
   }
 
-  private DatabaseSecret createAndStoreDatabaseSecret(@NonNull Context context) {
+  private static @NonNull DatabaseSecret createAndStoreDatabaseSecret(@NonNull Context context) {
     SecureRandom random = new SecureRandom();
     byte[]       secret = new byte[32];
     random.nextBytes(secret);
 
     DatabaseSecret databaseSecret = new DatabaseSecret(secret);
 
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+    if (Build.VERSION.SDK_INT >= 23) {
       KeyStoreHelper.SealedData encryptedSecret = KeyStoreHelper.seal(databaseSecret.asBytes());
       TextSecurePreferences.setDatabaseEncryptedSecret(context, encryptedSecret.serialize());
     } else {

app/src/main/java/org/thoughtcrime/securesms/crypto/ProfileKeyUtil.java

@@ -82,10 +82,6 @@ public final class ProfileKeyUtil {
     return Optional.of(profileKeyOrThrow(profileKey));
   }
 
-  public static @NonNull Optional<ProfileKeyCredential> profileKeyCredentialOptional(@Nullable byte[] profileKey) {
-    return Optional.fromNullable(profileKeyCredentialOrNull(profileKey));
-  }
-
   public static @NonNull ProfileKey createNew() {
     try {
       return new ProfileKey(Util.getSecretBytes(32));

app/src/main/java/org/thoughtcrime/securesms/crypto/SessionUtil.java

@@ -29,4 +29,7 @@ public class SessionUtil {
     new TextSecureSessionStore(context).archiveAllSessions();
   }
 
+  public static void archiveSession(Context context, RecipientId recipientId, int deviceId) {
+    new TextSecureSessionStore(context).archiveSession(recipientId, deviceId);
+  }
 }

app/src/main/java/org/thoughtcrime/securesms/crypto/storage/TextSecureSessionStore.java

@@ -103,6 +103,16 @@ public class TextSecureSessionStore implements SessionStore {
     }
   }
 
+  public void archiveSession(@NonNull RecipientId recipientId, int deviceId) {
+    synchronized (FILE_LOCK) {
+      SessionRecord session = DatabaseFactory.getSessionDatabase(context).load(recipientId, deviceId);
+      if (session != null) {
+        session.archiveCurrentState();
+        DatabaseFactory.getSessionDatabase(context).store(recipientId, deviceId, session);
+      }
+    }
+  }
+
   public void archiveSiblingSessions(@NonNull SignalProtocolAddress address) {
     synchronized (FILE_LOCK) {
       if (DatabaseFactory.getRecipientDatabase(context).containsPhoneOrUuid(address.getName())) {

app/src/main/java/org/thoughtcrime/securesms/database/AttachmentDatabase.java

@@ -53,7 +53,6 @@ import org.thoughtcrime.securesms.mms.MediaStream;
 import org.thoughtcrime.securesms.mms.MmsException;
 import org.thoughtcrime.securesms.mms.PartAuthority;
 import org.thoughtcrime.securesms.stickers.StickerLocator;
-import org.thoughtcrime.securesms.tracing.Trace;
 import org.thoughtcrime.securesms.util.Base64;
 import org.thoughtcrime.securesms.util.CursorUtil;
 import org.thoughtcrime.securesms.util.FileUtils;
@@ -82,7 +81,6 @@ import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 
-@Trace
 public class AttachmentDatabase extends Database {
   
   private static final String TAG = AttachmentDatabase.class.getSimpleName();
@@ -751,7 +749,7 @@ public class AttachmentDatabase extends Database {
   }
 
   /**
-   * @param onlyModifyThisAttachment If false and more than one attachment shares this file, they will all up updated.
+   * @param onlyModifyThisAttachment If false and more than one attachment shares this file, they will all be updated.
    *                                 If true, then guarantees not to affect other attachments.
    */
   public void updateAttachmentData(@NonNull DatabaseAttachment databaseAttachment,
@@ -1032,7 +1030,7 @@ public class AttachmentDatabase extends Database {
     }
   }
 
-  private File newFile() throws IOException {
+  public File newFile() throws IOException {
     File partsDirectory = context.getDir(DIRECTORY, Context.MODE_PRIVATE);
     return File.createTempFile("part", ".mms", partsDirectory);
   }

app/src/main/java/org/thoughtcrime/securesms/database/Database.java

@@ -23,6 +23,7 @@ import android.database.Cursor;
 import androidx.annotation.NonNull;
 
 import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper;
+import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
 
 import java.util.Set;
 
@@ -39,20 +40,27 @@ public abstract class Database {
   }
 
   protected void notifyConversationListeners(Set<Long> threadIds) {
-    for (long threadId : threadIds)
+    ApplicationDependencies.getDatabaseObserver().notifyConversationListeners(threadIds);
+
+    for (long threadId : threadIds) {
       notifyConversationListeners(threadId);
+    }
   }
 
   protected void notifyConversationListeners(long threadId) {
+    ApplicationDependencies.getDatabaseObserver().notifyConversationListeners(threadId);
+
     context.getContentResolver().notifyChange(DatabaseContentProviders.Conversation.getUriForThread(threadId), null);
     notifyVerboseConversationListeners(threadId);
   }
 
   protected void notifyVerboseConversationListeners(long threadId) {
+    ApplicationDependencies.getDatabaseObserver().notifyVerboseConversationListeners(threadId);
     context.getContentResolver().notifyChange(DatabaseContentProviders.Conversation.getVerboseUriForThread(threadId), null);
   }
 
   protected void notifyConversationListListeners() {
+    ApplicationDependencies.getDatabaseObserver().notifyConversationListListeners();
     context.getContentResolver().notifyChange(DatabaseContentProviders.ConversationList.CONTENT_URI, null);
   }
 
@@ -64,26 +72,32 @@ public abstract class Database {
     context.getContentResolver().notifyChange(DatabaseContentProviders.StickerPack.CONTENT_URI, null);
   }
 
+  @Deprecated
   protected void setNotifyConversationListeners(Cursor cursor, long threadId) {
     cursor.setNotificationUri(context.getContentResolver(), DatabaseContentProviders.Conversation.getUriForThread(threadId));
   }
 
+  @Deprecated
   protected void setNotifyConversationListeners(Cursor cursor) {
     cursor.setNotificationUri(context.getContentResolver(), DatabaseContentProviders.Conversation.getUriForAllThreads());
   }
 
+  @Deprecated
   protected void setNotifyVerboseConversationListeners(Cursor cursor, long threadId) {
     cursor.setNotificationUri(context.getContentResolver(), DatabaseContentProviders.Conversation.getVerboseUriForThread(threadId));
   }
 
+  @Deprecated
   protected void setNotifyConversationListListeners(Cursor cursor) {
     cursor.setNotificationUri(context.getContentResolver(), DatabaseContentProviders.ConversationList.CONTENT_URI);
   }
 
+  @Deprecated
   protected void setNotifyStickerListeners(Cursor cursor) {
     cursor.setNotificationUri(context.getContentResolver(), DatabaseContentProviders.Sticker.CONTENT_URI);
   }
 
+  @Deprecated
   protected void setNotifyStickerPackListeners(Cursor cursor) {
     cursor.setNotificationUri(context.getContentResolver(), DatabaseContentProviders.StickerPack.CONTENT_URI);
   }
@@ -101,5 +115,4 @@ public abstract class Database {
   public void reset(SQLCipherOpenHelper databaseHelper) {
     this.databaseHelper = databaseHelper;
   }
-
 }

app/src/main/java/org/thoughtcrime/securesms/database/DatabaseFactory.java

@@ -32,13 +32,14 @@ import org.thoughtcrime.securesms.database.helpers.ClassicOpenHelper;
 import org.thoughtcrime.securesms.database.helpers.SQLCipherMigrationHelper;
 import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper;
 import org.thoughtcrime.securesms.migrations.LegacyMigrationJob;
+import org.thoughtcrime.securesms.util.SqlUtil;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
 
 public class DatabaseFactory {
 
   private static final Object lock = new Object();
 
-  private static DatabaseFactory instance;
+  private static volatile DatabaseFactory instance;
 
   private final SQLCipherOpenHelper     databaseHelper;
   private final SmsDatabase             sms;
@@ -58,21 +59,20 @@ public class DatabaseFactory {
   private final SignedPreKeyDatabase    signedPreKeyDatabase;
   private final SessionDatabase         sessionDatabase;
   private final SearchDatabase          searchDatabase;
-  private final JobDatabase             jobDatabase;
   private final StickerDatabase         stickerDatabase;
   private final StorageKeyDatabase      storageKeyDatabase;
-  private final KeyValueDatabase        keyValueDatabase;
-  private final MegaphoneDatabase       megaphoneDatabase;
   private final RemappedRecordsDatabase remappedRecordsDatabase;
   private final MentionDatabase         mentionDatabase;
 
   public static DatabaseFactory getInstance(Context context) {
-    synchronized (lock) {
-      if (instance == null)
-        instance = new DatabaseFactory(context.getApplicationContext());
-
-      return instance;
+    if (instance == null) {
+      synchronized (lock) {
+        if (instance == null) {
+          instance = new DatabaseFactory(context.getApplicationContext());
+        }
+      }
     }
+    return instance;
   }
 
   public static MmsSmsDatabase getMmsSmsDatabase(Context context) {
@@ -143,10 +143,6 @@ public class DatabaseFactory {
     return getInstance(context).searchDatabase;
   }
 
-  public static JobDatabase getJobDatabase(Context context) {
-    return getInstance(context).jobDatabase;
-  }
-
   public static StickerDatabase getStickerDatabase(Context context) {
     return getInstance(context).stickerDatabase;
   }
@@ -155,14 +151,6 @@ public class DatabaseFactory {
     return getInstance(context).storageKeyDatabase;
   }
 
-  public static KeyValueDatabase getKeyValueDatabase(Context context) {
-    return getInstance(context).keyValueDatabase;
-  }
-
-  public static MegaphoneDatabase getMegaphoneDatabase(Context context) {
-    return getInstance(context).megaphoneDatabase;
-  }
-
   static RemappedRecordsDatabase getRemappedRecordsDatabase(Context context) {
     return getInstance(context).remappedRecordsDatabase;
   }
@@ -180,6 +168,11 @@ public class DatabaseFactory {
       getInstance(context).databaseHelper.onUpgrade(database, database.getVersion(), -1);
       getInstance(context).databaseHelper.markCurrent(database);
       getInstance(context).mms.trimEntriesForExpiredMessages();
+      getInstance(context).getRawDatabase().rawExecSQL("DROP TABLE IF EXISTS key_value");
+      getInstance(context).getRawDatabase().rawExecSQL("DROP TABLE IF EXISTS megaphone");
+      getInstance(context).getRawDatabase().rawExecSQL("DROP TABLE IF EXISTS job_spec");
+      getInstance(context).getRawDatabase().rawExecSQL("DROP TABLE IF EXISTS constraint_spec");
+      getInstance(context).getRawDatabase().rawExecSQL("DROP TABLE IF EXISTS dependency_spec");
 
       instance.databaseHelper.close();
       instance = null;
@@ -193,8 +186,8 @@ public class DatabaseFactory {
   private DatabaseFactory(@NonNull Context context) {
     SQLiteDatabase.loadLibs(context);
 
-    DatabaseSecret      databaseSecret   = new DatabaseSecretProvider(context).getOrCreateDatabaseSecret();
-    AttachmentSecret    attachmentSecret = AttachmentSecretProvider.getInstance(context).getOrCreateAttachmentSecret();
+    DatabaseSecret   databaseSecret   = DatabaseSecretProvider.getOrCreateDatabaseSecret(context);
+    AttachmentSecret attachmentSecret = AttachmentSecretProvider.getInstance(context).getOrCreateAttachmentSecret();
 
     this.databaseHelper          = new SQLCipherOpenHelper(context, databaseSecret);
     this.sms                     = new SmsDatabase(context, databaseHelper);
@@ -214,11 +207,8 @@ public class DatabaseFactory {
     this.signedPreKeyDatabase    = new SignedPreKeyDatabase(context, databaseHelper);
     this.sessionDatabase         = new SessionDatabase(context, databaseHelper);
     this.searchDatabase          = new SearchDatabase(context, databaseHelper);
-    this.jobDatabase             = new JobDatabase(context, databaseHelper);
     this.stickerDatabase         = new StickerDatabase(context, databaseHelper, attachmentSecret);
     this.storageKeyDatabase      = new StorageKeyDatabase(context, databaseHelper);
-    this.keyValueDatabase        = new KeyValueDatabase(context, databaseHelper);
-    this.megaphoneDatabase       = new MegaphoneDatabase(context, databaseHelper);
     this.remappedRecordsDatabase = new RemappedRecordsDatabase(context, databaseHelper);
     this.mentionDatabase         = new MentionDatabase(context, databaseHelper);
   }
@@ -250,4 +240,12 @@ public class DatabaseFactory {
   public void triggerDatabaseAccess() {
     databaseHelper.getWritableDatabase();
   }
+
+  public SQLiteDatabase getRawDatabase() {
+    return databaseHelper.getWritableDatabase().getSqlCipherDatabase();
+  }
+
+  public boolean hasTable(String table) {
+    return SqlUtil.tableExists(databaseHelper.getReadableDatabase().getSqlCipherDatabase(), table);
+  }
 }

app/src/main/java/org/thoughtcrime/securesms/database/DatabaseObserver.java

@@ -0,0 +1,142 @@
+package org.thoughtcrime.securesms.database;
+
+import android.app.Application;
+import android.database.ContentObserver;
+import android.database.Cursor;
+
+import androidx.annotation.NonNull;
+
+import org.signal.core.util.concurrent.SignalExecutors;
+import org.thoughtcrime.securesms.util.concurrent.SerialExecutor;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.Executor;
+
+/**
+ * Allows listening to database changes to varying degrees of specificity.
+ *
+ * A replacement for the observer system in {@link Database}. We should move to this over time.
+ */
+public final class DatabaseObserver {
+
+  private final Application application;
+  private final Executor    executor;
+
+  private final Set<Observer>            conversationListObservers;
+  private final Map<Long, Set<Observer>> conversationObservers;
+  private final Map<Long, Set<Observer>> verboseConversationObservers;
+
+  public DatabaseObserver(Application application) {
+    this.application                  = application;
+    this.executor                     = new SerialExecutor(SignalExecutors.BOUNDED);
+    this.conversationListObservers    = new HashSet<>();
+    this.conversationObservers        = new HashMap<>();
+    this.verboseConversationObservers = new HashMap<>();
+  }
+
+  public void registerConversationListObserver(@NonNull Observer listener) {
+    executor.execute(() -> {
+      conversationListObservers.add(listener);
+    });
+  }
+
+  public void registerConversationObserver(long threadId, @NonNull Observer listener) {
+    executor.execute(() -> {
+      registerMapped(conversationObservers, threadId, listener);
+    });
+  }
+
+  public void registerVerboseConversationObserver(long threadId, @NonNull Observer listener) {
+    executor.execute(() -> {
+      registerMapped(verboseConversationObservers, threadId, listener);
+    });
+  }
+
+  public void unregisterObserver(@NonNull Observer listener) {
+    executor.execute(() -> {
+      conversationListObservers.remove(listener);
+      unregisterMapped(conversationObservers, listener);
+      unregisterMapped(verboseConversationObservers, listener);
+    });
+  }
+
+  public void notifyConversationListeners(Set<Long> threadIds) {
+    executor.execute(() -> {
+      for (long threadId : threadIds) {
+        notifyMapped(conversationObservers, threadId);
+        notifyMapped(verboseConversationObservers, threadId);
+      }
+    });
+
+    for (long threadId : threadIds) {
+      application.getContentResolver().notifyChange(DatabaseContentProviders.Conversation.getUriForThread(threadId), null);
+      application.getContentResolver().notifyChange(DatabaseContentProviders.Conversation.getVerboseUriForThread(threadId), null);
+    }
+  }
+
+  public void notifyConversationListeners(long threadId) {
+    executor.execute(() -> {
+      notifyMapped(conversationObservers, threadId);
+      notifyMapped(verboseConversationObservers, threadId);
+    });
+
+    application.getContentResolver().notifyChange(DatabaseContentProviders.Conversation.getUriForThread(threadId), null);
+    application.getContentResolver().notifyChange(DatabaseContentProviders.Conversation.getVerboseUriForThread(threadId), null);
+  }
+
+  public void notifyVerboseConversationListeners(long threadId) {
+    executor.execute(() -> {
+      notifyMapped(verboseConversationObservers, threadId);
+    });
+
+    application.getContentResolver().notifyChange(DatabaseContentProviders.Conversation.getVerboseUriForThread(threadId), null);
+  }
+
+  public void notifyConversationListListeners() {
+    executor.execute(() -> {
+      for (Observer listener : conversationListObservers) {
+        listener.onChanged();
+      }
+    });
+
+    application.getContentResolver().notifyChange(DatabaseContentProviders.ConversationList.CONTENT_URI, null);
+  }
+
+  private <K> void registerMapped(@NonNull Map<K, Set<Observer>> map, @NonNull K key, @NonNull Observer listener) {
+    Set<Observer> listeners = map.get(key);
+
+    if (listeners == null) {
+      listeners = new HashSet<>();
+    }
+
+    listeners.add(listener);
+    map.put(key, listeners);
+  }
+
+  private <K> void unregisterMapped(@NonNull Map<K, Set<Observer>> map, @NonNull Observer listener) {
+    for (Map.Entry<K, Set<Observer>> entry : map.entrySet()) {
+      entry.getValue().remove(listener);
+    }
+  }
+
+  private static <K> void notifyMapped(@NonNull Map<K, Set<Observer>> map, @NonNull K key) {
+    Set<Observer> listeners = map.get(key);
+
+    if (listeners != null) {
+      for (Observer listener : listeners) {
+        listener.onChanged();
+      }
+    }
+  }
+
+  public interface Observer {
+    /**
+     * Called when the relevant data changes. Executed on a serial executor, so don't do any
+     * long-running tasks!
+     */
+    void onChanged();
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/database/DraftDatabase.java

@@ -10,13 +10,11 @@ import androidx.annotation.Nullable;
 
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper;
-import org.thoughtcrime.securesms.tracing.Trace;
 
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
 
-@Trace
 public class DraftDatabase extends Database {
 
           static final String TABLE_NAME  = "drafts";

app/src/main/java/org/thoughtcrime/securesms/database/GroupDatabase.java

@@ -15,8 +15,10 @@ import com.google.protobuf.InvalidProtocolBufferException;
 
 import org.signal.core.util.logging.Log;
 import org.signal.storageservice.protos.groups.AccessControl;
+import org.signal.storageservice.protos.groups.GroupChange;
 import org.signal.storageservice.protos.groups.Member;
 import org.signal.storageservice.protos.groups.local.DecryptedGroup;
+import org.signal.storageservice.protos.groups.local.DecryptedGroupChange;
 import org.signal.storageservice.protos.groups.local.DecryptedMember;
 import org.signal.zkgroup.InvalidInputException;
 import org.signal.zkgroup.groups.GroupMasterKey;
@@ -26,13 +28,13 @@ import org.thoughtcrime.securesms.groups.GroupId;
 import org.thoughtcrime.securesms.groups.GroupMigrationMembershipChange;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
-import org.thoughtcrime.securesms.tracing.Trace;
 import org.thoughtcrime.securesms.util.CursorUtil;
 import org.thoughtcrime.securesms.util.SetUtil;
 import org.thoughtcrime.securesms.util.SqlUtil;
 import org.thoughtcrime.securesms.util.Util;
 import org.whispersystems.libsignal.util.guava.Optional;
 import org.whispersystems.signalservice.api.groupsv2.DecryptedGroupUtil;
+import org.whispersystems.signalservice.api.groupsv2.GroupChangeReconstruct;
 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentPointer;
 import org.whispersystems.signalservice.api.util.UuidUtil;
 
@@ -47,29 +49,29 @@ import java.util.LinkedList;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.Set;
 import java.util.UUID;
 
-@Trace
 public final class GroupDatabase extends Database {
 
   private static final String TAG = Log.tag(GroupDatabase.class);
 
-          static final String TABLE_NAME          = "groups";
-  private static final String ID                  = "_id";
-          static final String GROUP_ID            = "group_id";
-          static final String RECIPIENT_ID        = "recipient_id";
-  private static final String TITLE               = "title";
-          static final String MEMBERS             = "members";
-  private static final String AVATAR_ID           = "avatar_id";
-  private static final String AVATAR_KEY          = "avatar_key";
-  private static final String AVATAR_CONTENT_TYPE = "avatar_content_type";
-  private static final String AVATAR_RELAY        = "avatar_relay";
-  private static final String AVATAR_DIGEST       = "avatar_digest";
-  private static final String TIMESTAMP           = "timestamp";
-          static final String ACTIVE              = "active";
-          static final String MMS                 = "mms";
-  private static final String EXPECTED_V2_ID      = "expected_v2_id";
-  private static final String FORMER_V1_MEMBERS   = "former_v1_members";
+          static final String TABLE_NAME            = "groups";
+  private static final String ID                    = "_id";
+          static final String GROUP_ID              = "group_id";
+          static final String RECIPIENT_ID          = "recipient_id";
+  private static final String TITLE                 = "title";
+          static final String MEMBERS               = "members";
+  private static final String AVATAR_ID             = "avatar_id";
+  private static final String AVATAR_KEY            = "avatar_key";
+  private static final String AVATAR_CONTENT_TYPE   = "avatar_content_type";
+  private static final String AVATAR_RELAY          = "avatar_relay";
+  private static final String AVATAR_DIGEST         = "avatar_digest";
+  private static final String TIMESTAMP             = "timestamp";
+          static final String ACTIVE                = "active";
+          static final String MMS                   = "mms";
+  private static final String EXPECTED_V2_ID        = "expected_v2_id";
+  private static final String UNMIGRATED_V1_MEMBERS = "former_v1_members";
 
 
   /* V2 Group columns */
@@ -80,24 +82,24 @@ public final class GroupDatabase extends Database {
   /** Serialized {@link DecryptedGroup} protobuf */
   private static final String V2_DECRYPTED_GROUP  = "decrypted_group";
 
-  public static final String CREATE_TABLE = "CREATE TABLE " + TABLE_NAME + " (" + ID                  + " INTEGER PRIMARY KEY, " +
-                                                                                  GROUP_ID            + " TEXT, " +
-                                                                                  RECIPIENT_ID        + " INTEGER, " +
-                                                                                  TITLE               + " TEXT, " +
-                                                                                  MEMBERS             + " TEXT, " +
-                                                                                  AVATAR_ID           + " INTEGER, " +
-                                                                                  AVATAR_KEY          + " BLOB, " +
-                                                                                  AVATAR_CONTENT_TYPE + " TEXT, " +
-                                                                                  AVATAR_RELAY        + " TEXT, " +
-                                                                                  TIMESTAMP           + " INTEGER, " +
-                                                                                  ACTIVE              + " INTEGER DEFAULT 1, " +
-                                                                                  AVATAR_DIGEST       + " BLOB, " +
-                                                                                  MMS                 + " INTEGER DEFAULT 0, " +
-                                                                                  V2_MASTER_KEY       + " BLOB, " +
-                                                                                  V2_REVISION         + " BLOB, " +
-                                                                                  V2_DECRYPTED_GROUP  + " BLOB, " +
-                                                                                  EXPECTED_V2_ID      + " TEXT DEFAULT NULL, " +
-                                                                                  FORMER_V1_MEMBERS   + " TEXT DEFAULT NULL);";
+  public static final String CREATE_TABLE = "CREATE TABLE " + TABLE_NAME + " (" + ID                    + " INTEGER PRIMARY KEY, " +
+                                                                                  GROUP_ID              + " TEXT, " +
+                                                                                  RECIPIENT_ID          + " INTEGER, " +
+                                                                                  TITLE                 + " TEXT, " +
+                                                                                  MEMBERS               + " TEXT, " +
+                                                                                  AVATAR_ID             + " INTEGER, " +
+                                                                                  AVATAR_KEY            + " BLOB, " +
+                                                                                  AVATAR_CONTENT_TYPE   + " TEXT, " +
+                                                                                  AVATAR_RELAY          + " TEXT, " +
+                                                                                  TIMESTAMP             + " INTEGER, " +
+                                                                                  ACTIVE                + " INTEGER DEFAULT 1, " +
+                                                                                  AVATAR_DIGEST         + " BLOB, " +
+                                                                                  MMS                   + " INTEGER DEFAULT 0, " +
+                                                                                  V2_MASTER_KEY         + " BLOB, " +
+                                                                                  V2_REVISION           + " BLOB, " +
+                                                                                  V2_DECRYPTED_GROUP    + " BLOB, " +
+                                                                                  EXPECTED_V2_ID        + " TEXT DEFAULT NULL, " +
+                                                                                  UNMIGRATED_V1_MEMBERS + " TEXT DEFAULT NULL);";
 
   public static final String[] CREATE_INDEXS = {
       "CREATE UNIQUE INDEX IF NOT EXISTS group_id_index ON " + TABLE_NAME + " (" + GROUP_ID + ");",
@@ -106,7 +108,7 @@ public final class GroupDatabase extends Database {
   };
 
   private static final String[] GROUP_PROJECTION = {
-      GROUP_ID, RECIPIENT_ID, TITLE, MEMBERS, FORMER_V1_MEMBERS, AVATAR_ID, AVATAR_KEY, AVATAR_CONTENT_TYPE, AVATAR_RELAY, AVATAR_DIGEST,
+      GROUP_ID, RECIPIENT_ID, TITLE, MEMBERS, UNMIGRATED_V1_MEMBERS, AVATAR_ID, AVATAR_KEY, AVATAR_CONTENT_TYPE, AVATAR_RELAY, AVATAR_DIGEST,
       TIMESTAMP, ACTIVE, MMS, V2_MASTER_KEY, V2_REVISION, V2_DECRYPTED_GROUP
   };
 
@@ -162,9 +164,23 @@ public final class GroupDatabase extends Database {
     }
   }
 
-  public void clearFormerV1Members(@NonNull GroupId.V2 id) {
+  /**
+   * Removes the specified members from the list of 'unmigrated V1 members' -- the list of members
+   * that were either dropped or had to be invited when migrating the group from V1->V2.
+   */
+  public void removeUnmigratedV1Members(@NonNull GroupId.V2 id, @NonNull List<RecipientId> toRemove) {
+    Optional<GroupRecord> group = getGroup(id);
+
+    if (!group.isPresent()) {
+      Log.w(TAG, "Couldn't find the group!", new Throwable());
+      return;
+    }
+
+    List<RecipientId> newUnmigrated = group.get().getUnmigratedV1Members();
+    newUnmigrated.removeAll(toRemove);
+
     ContentValues values = new ContentValues();
-    values.putNull(FORMER_V1_MEMBERS);
+    values.put(UNMIGRATED_V1_MEMBERS, newUnmigrated.isEmpty() ? null : RecipientId.toSerializedList(newUnmigrated));
 
     databaseHelper.getWritableDatabase().update(TABLE_NAME, values, GROUP_ID + " = ?", SqlUtil.buildArgs(id));
 
@@ -505,16 +521,15 @@ public final class GroupDatabase extends Database {
       contentValues.put(V2_MASTER_KEY, groupMasterKey.serialize());
       contentValues.putNull(EXPECTED_V2_ID);
 
-      List<RecipientId> newMembers     = Stream.of(DecryptedGroupUtil.membersToUuidList(decryptedGroup.getMembersList())).map(u -> RecipientId.from(u, null)).toList();
-      List<RecipientId> pendingMembers = Stream.of(DecryptedGroupUtil.pendingToUuidList(decryptedGroup.getPendingMembersList())).map(u -> RecipientId.from(u, null)).toList();
+      List<RecipientId> newMembers     = uuidsToRecipientIds(DecryptedGroupUtil.membersToUuidList(decryptedGroup.getMembersList()));
+      List<RecipientId> pendingMembers = uuidsToRecipientIds(DecryptedGroupUtil.pendingToUuidList(decryptedGroup.getPendingMembersList()));
 
       newMembers.addAll(pendingMembers);
 
-      List<RecipientId> droppedMembers = new ArrayList<>(SetUtil.difference(record.getMembers(), newMembers));
+      List<RecipientId> droppedMembers    = new ArrayList<>(SetUtil.difference(record.getMembers(), newMembers));
+      List<RecipientId> unmigratedMembers = Util.concatenatedList(pendingMembers, droppedMembers);
 
-      if (droppedMembers.size() > 0) {
-        contentValues.put(FORMER_V1_MEMBERS, RecipientId.toSerializedList(record.getMembers()));
-      }
+      contentValues.put(UNMIGRATED_V1_MEMBERS, unmigratedMembers.isEmpty() ? null : RecipientId.toSerializedList(unmigratedMembers));
 
       int updated = db.update(TABLE_NAME, contentValues, GROUP_ID + " = ?", SqlUtil.buildArgs(groupIdV1.toString()));
 
@@ -543,10 +558,31 @@ public final class GroupDatabase extends Database {
   }
 
   public void update(@NonNull GroupId.V2 groupId, @NonNull DecryptedGroup decryptedGroup) {
-    RecipientDatabase recipientDatabase = DatabaseFactory.getRecipientDatabase(context);
-    RecipientId       groupRecipientId  = recipientDatabase.getOrInsertFromGroupId(groupId);
-    String            title             = decryptedGroup.getTitle();
-    ContentValues     contentValues     = new ContentValues();
+    RecipientDatabase     recipientDatabase   = DatabaseFactory.getRecipientDatabase(context);
+    RecipientId           groupRecipientId    = recipientDatabase.getOrInsertFromGroupId(groupId);
+    Optional<GroupRecord> existingGroup       = getGroup(groupId);
+    String                title               = decryptedGroup.getTitle();
+    ContentValues         contentValues       = new ContentValues();
+
+    if (existingGroup.isPresent() && existingGroup.get().getUnmigratedV1Members().size() > 0 && existingGroup.get().isV2Group()) {
+      Set<RecipientId> unmigratedV1Members = new HashSet<>(existingGroup.get().getUnmigratedV1Members());
+
+      DecryptedGroupChange change = GroupChangeReconstruct.reconstructGroupChange(existingGroup.get().requireV2GroupProperties().getDecryptedGroup(), decryptedGroup);
+
+      List<RecipientId> addedMembers    = uuidsToRecipientIds(DecryptedGroupUtil.membersToUuidList(change.getNewMembersList()));
+      List<RecipientId> removedMembers  = uuidsToRecipientIds(DecryptedGroupUtil.removedMembersUuidList(change));
+      List<RecipientId> addedInvites    = uuidsToRecipientIds(DecryptedGroupUtil.pendingToUuidList(change.getNewPendingMembersList()));
+      List<RecipientId> removedInvites  = uuidsToRecipientIds(DecryptedGroupUtil.removedPendingMembersUuidList(change));
+      List<RecipientId> acceptedInvites = uuidsToRecipientIds(DecryptedGroupUtil.membersToUuidList(change.getPromotePendingMembersList()));
+
+      unmigratedV1Members.removeAll(addedMembers);
+      unmigratedV1Members.removeAll(removedMembers);
+      unmigratedV1Members.removeAll(addedInvites);
+      unmigratedV1Members.removeAll(removedInvites);
+      unmigratedV1Members.removeAll(acceptedInvites);
+
+      contentValues.put(UNMIGRATED_V1_MEMBERS, unmigratedV1Members.isEmpty() ? null : RecipientId.toSerializedList(unmigratedV1Members));
+    }
 
     contentValues.put(TITLE, title);
     contentValues.put(V2_REVISION, decryptedGroup.getRevision());
@@ -688,16 +724,11 @@ public final class GroupDatabase extends Database {
     }
   }
 
-  @WorkerThread
-  public boolean isPendingMember(@NonNull GroupId.Push groupId, @NonNull Recipient recipient) {
-    return getGroup(groupId).transform(g -> g.isPendingMember(recipient)).or(false);
-  }
 
-  private static String serializeV2GroupMembers(@NonNull DecryptedGroup decryptedGroup) {
-    List<RecipientId> groupMembers  = new ArrayList<>(decryptedGroup.getMembersCount());
+  private static List<RecipientId> uuidsToRecipientIds(@NonNull List<UUID> uuids) {
+    List<RecipientId> groupMembers  = new ArrayList<>(uuids.size());
 
-    for (DecryptedMember member : decryptedGroup.getMembersList()) {
-      UUID uuid = UuidUtil.fromByteString(member.getUuid());
+    for (UUID uuid : uuids) {
       if (UuidUtil.UNKNOWN_UUID.equals(uuid)) {
         Log.w(TAG, "Seen unknown UUID in members list");
       } else {
@@ -707,7 +738,14 @@ public final class GroupDatabase extends Database {
 
     Collections.sort(groupMembers);
 
-    return RecipientId.toSerializedList(groupMembers);
+    return groupMembers;
+  }
+
+  private static String serializeV2GroupMembers(@NonNull DecryptedGroup decryptedGroup) {
+    List<UUID>        uuids        = DecryptedGroupUtil.membersToUuidList(decryptedGroup.getMembersList());
+    List<RecipientId> recipientIds = uuidsToRecipientIds(uuids);
+
+    return RecipientId.toSerializedList(recipientIds);
   }
 
   public @NonNull List<GroupId.V2> getAllGroupV2Ids() {
@@ -772,7 +810,7 @@ public final class GroupDatabase extends Database {
                              RecipientId.from(CursorUtil.requireString(cursor, RECIPIENT_ID)),
                              CursorUtil.requireString(cursor, TITLE),
                              CursorUtil.requireString(cursor, MEMBERS),
-                             CursorUtil.requireString(cursor, FORMER_V1_MEMBERS),
+                             CursorUtil.requireString(cursor, UNMIGRATED_V1_MEMBERS),
                              CursorUtil.requireLong(cursor, AVATAR_ID),
                              CursorUtil.requireBlob(cursor, AVATAR_KEY),
                              CursorUtil.requireString(cursor, AVATAR_CONTENT_TYPE),
@@ -798,7 +836,7 @@ public final class GroupDatabase extends Database {
               private final RecipientId       recipientId;
               private final String            title;
               private final List<RecipientId> members;
-              private final List<RecipientId> formerV1Members;
+              private final List<RecipientId> unmigratedV1Members;
               private final long              avatarId;
               private final byte[]            avatarKey;
               private final byte[]            avatarDigest;
@@ -812,7 +850,7 @@ public final class GroupDatabase extends Database {
                        @NonNull RecipientId recipientId,
                        String title,
                        String members,
-                       String formerV1Members,
+                       @Nullable String unmigratedV1Members,
                        long avatarId,
                        byte[] avatarKey,
                        String avatarContentType,
@@ -853,10 +891,10 @@ public final class GroupDatabase extends Database {
         this.members = Collections.emptyList();
       }
 
-      if (!TextUtils.isEmpty(formerV1Members)) {
-        this.formerV1Members = RecipientId.fromSerializedList(formerV1Members);
+      if (!TextUtils.isEmpty(unmigratedV1Members)) {
+        this.unmigratedV1Members = RecipientId.fromSerializedList(unmigratedV1Members);
       } else {
-        this.formerV1Members = Collections.emptyList();
+        this.unmigratedV1Members = Collections.emptyList();
       }
     }
 
@@ -876,8 +914,9 @@ public final class GroupDatabase extends Database {
       return members;
     }
 
-    public @NonNull List<RecipientId> getFormerV1Members() {
-      return formerV1Members;
+    /** V1 members that were lost during the V1->V2 migration */
+    public @NonNull List<RecipientId> getUnmigratedV1Members() {
+      return unmigratedV1Members;
     }
 
     public boolean hasAvatar() {

app/src/main/java/org/thoughtcrime/securesms/database/GroupReceiptDatabase.java

@@ -9,14 +9,12 @@ import androidx.annotation.NonNull;
 
 import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper;
 import org.thoughtcrime.securesms.recipients.RecipientId;
-import org.thoughtcrime.securesms.tracing.Trace;
 import org.whispersystems.libsignal.util.Pair;
 
 import java.util.Collection;
 import java.util.LinkedList;
 import java.util.List;
 
-@Trace
 public class GroupReceiptDatabase extends Database {
 
   public  static final String TABLE_NAME = "group_receipts";

app/src/main/java/org/thoughtcrime/securesms/database/IdentityDatabase.java

@@ -28,7 +28,6 @@ import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper;
 import org.thoughtcrime.securesms.database.identity.IdentityRecordList;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
-import org.thoughtcrime.securesms.tracing.Trace;
 import org.thoughtcrime.securesms.util.Base64;
 import org.thoughtcrime.securesms.util.IdentityUtil;
 import org.whispersystems.libsignal.IdentityKey;
@@ -39,7 +38,6 @@ import java.io.IOException;
 import java.util.LinkedList;
 import java.util.List;
 
-@Trace
 public class IdentityDatabase extends Database {
 
   @SuppressWarnings("unused")

app/src/main/java/org/thoughtcrime/securesms/database/JobDatabase.java

@@ -1,36 +1,37 @@
 package org.thoughtcrime.securesms.database;
 
+import android.app.Application;
 import android.content.ContentValues;
-import android.content.Context;
 import android.database.Cursor;
 
 import androidx.annotation.NonNull;
 
 import com.annimon.stream.Stream;
 
-import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper;
+import net.sqlcipher.database.SQLiteOpenHelper;
+import net.sqlcipher.database.SQLiteDatabase;
+
+import org.signal.core.util.logging.Log;
+import org.thoughtcrime.securesms.crypto.DatabaseSecret;
+import org.thoughtcrime.securesms.crypto.DatabaseSecretProvider;
 import org.thoughtcrime.securesms.jobmanager.persistence.ConstraintSpec;
 import org.thoughtcrime.securesms.jobmanager.persistence.DependencySpec;
 import org.thoughtcrime.securesms.jobmanager.persistence.FullSpec;
 import org.thoughtcrime.securesms.jobmanager.persistence.JobSpec;
-import org.thoughtcrime.securesms.tracing.Trace;
+import org.thoughtcrime.securesms.util.CursorUtil;
 
 import java.util.LinkedList;
 import java.util.List;
 
-@Trace
-public class JobDatabase extends Database {
+public class JobDatabase extends SQLiteOpenHelper implements SignalDatabase {
 
-  public static String JOBS_TABLE_NAME         = "job_spec";
-  public static String CONSTRAINTS_TABLE_NAME  = "constraint_spec";
-  public static String DEPENDENCIES_TABLE_NAME = "dependency_spec";
+  private static final String TAG = Log.tag(JobDatabase.class);
 
-  public static final String[] CREATE_TABLE = new String[] { Jobs.CREATE_TABLE,
-                                                             Constraints.CREATE_TABLE,
-                                                             Dependencies.CREATE_TABLE };
+  private static final int    DATABASE_VERSION = 1;
+  private static final String DATABASE_NAME    = "signal-jobmanager.db";
 
   private static final class Jobs {
-    private static final String TABLE_NAME            = JOBS_TABLE_NAME;
+    private static final String TABLE_NAME            = "job_spec";
     private static final String ID                    = "_id";
     private static final String JOB_SPEC_ID           = "job_spec_id";
     private static final String FACTORY_KEY           = "factory_key";
@@ -40,7 +41,6 @@ public class JobDatabase extends Database {
     private static final String RUN_ATTEMPT           = "run_attempt";
     private static final String MAX_ATTEMPTS          = "max_attempts";
     private static final String MAX_BACKOFF           = "max_backoff";
-    private static final String MAX_INSTANCES         = "max_instances";
     private static final String LIFESPAN              = "lifespan";
     private static final String SERIALIZED_DATA       = "serialized_data";
     private static final String SERIALIZED_INPUT_DATA = "serialized_input_data";
@@ -55,7 +55,6 @@ public class JobDatabase extends Database {
                                                                                     RUN_ATTEMPT           + " INTEGER, " +
                                                                                     MAX_ATTEMPTS          + " INTEGER, " +
                                                                                     MAX_BACKOFF           + " INTEGER, " +
-                                                                                    MAX_INSTANCES         + " INTEGER, " +
                                                                                     LIFESPAN              + " INTEGER, " +
                                                                                     SERIALIZED_DATA       + " TEXT, " +
                                                                                     SERIALIZED_INPUT_DATA + " TEXT DEFAULT NULL, " +
@@ -63,7 +62,7 @@ public class JobDatabase extends Database {
   }
 
   private static final class Constraints {
-    private static final String TABLE_NAME  = CONSTRAINTS_TABLE_NAME;
+    private static final String TABLE_NAME  = "constraint_spec";
     private static final String ID          = "_id";
     private static final String JOB_SPEC_ID = "job_spec_id";
     private static final String FACTORY_KEY = "factory_key";
@@ -75,7 +74,7 @@ public class JobDatabase extends Database {
   }
 
   private static final class Dependencies {
-    private static final String TABLE_NAME             = DEPENDENCIES_TABLE_NAME;
+    private static final String TABLE_NAME             = "dependency_spec";
     private static final String ID                     = "_id";
     private static final String JOB_SPEC_ID            = "job_spec_id";
     private static final String DEPENDS_ON_JOB_SPEC_ID = "depends_on_job_spec_id";
@@ -87,8 +86,65 @@ public class JobDatabase extends Database {
   }
 
 
-  public JobDatabase(Context context, SQLCipherOpenHelper databaseHelper) {
-    super(context, databaseHelper);
+  private static volatile JobDatabase instance;
+
+  private final Application    application;
+  private final DatabaseSecret databaseSecret;
+
+  public static @NonNull JobDatabase getInstance(@NonNull Application context) {
+    if (instance == null) {
+      synchronized (JobDatabase.class) {
+        if (instance == null) {
+          instance = new JobDatabase(context, DatabaseSecretProvider.getOrCreateDatabaseSecret(context));
+        }
+      }
+    }
+    return instance;
+  }
+
+  public JobDatabase(@NonNull Application application, @NonNull DatabaseSecret databaseSecret) {
+    super(application, DATABASE_NAME, null, DATABASE_VERSION, new SqlCipherDatabaseHook());
+
+    this.application    = application;
+    this.databaseSecret = databaseSecret;
+  }
+
+  @Override
+  public void onCreate(SQLiteDatabase db) {
+    Log.i(TAG, "onCreate()");
+
+    db.execSQL(Jobs.CREATE_TABLE);
+    db.execSQL(Constraints.CREATE_TABLE);
+    db.execSQL(Dependencies.CREATE_TABLE);
+
+    if (DatabaseFactory.getInstance(application).hasTable("job_spec")) {
+      Log.i(TAG, "Found old job_spec table. Migrating data.");
+      migrateJobSpecsFromPreviousDatabase(DatabaseFactory.getInstance(application).getRawDatabase(), db);
+    }
+
+    if (DatabaseFactory.getInstance(application).hasTable("constraint_spec")) {
+      Log.i(TAG, "Found old constraint_spec table. Migrating data.");
+      migrateConstraintSpecsFromPreviousDatabase(DatabaseFactory.getInstance(application).getRawDatabase(), db);
+    }
+
+    if (DatabaseFactory.getInstance(application).hasTable("dependency_spec")) {
+      Log.i(TAG, "Found old dependency_spec table. Migrating data.");
+      migrateDependencySpecsFromPreviousDatabase(DatabaseFactory.getInstance(application).getRawDatabase(), db);
+    }
+  }
+
+  @Override
+  public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+    Log.i(TAG, "onUpgrade(" + oldVersion + ", " + newVersion + ")");
+  }
+
+  @Override
+  public void onOpen(SQLiteDatabase db) {
+    Log.i(TAG, "onOpen()");
+
+    dropTableIfPresent("job_spec");
+    dropTableIfPresent("constraint_spec");
+    dropTableIfPresent("dependency_spec");
   }
 
   public synchronized void insertJobs(@NonNull List<FullSpec> fullSpecs) {
@@ -96,7 +152,7 @@ public class JobDatabase extends Database {
       return;
     }
 
-    SQLiteDatabase db = databaseHelper.getWritableDatabase();
+    SQLiteDatabase db = getWritableDatabase();
 
     db.beginTransaction();
 
@@ -116,7 +172,7 @@ public class JobDatabase extends Database {
   public synchronized @NonNull List<JobSpec> getAllJobSpecs() {
     List<JobSpec> jobs = new LinkedList<>();
 
-    try (Cursor cursor = databaseHelper.getReadableDatabase().query(Jobs.TABLE_NAME, null, null, null, null, null, Jobs.CREATE_TIME + ", " + Jobs.ID + " ASC")) {
+    try (Cursor cursor = getReadableDatabase().query(Jobs.TABLE_NAME, null, null, null, null, null, Jobs.CREATE_TIME + ", " + Jobs.ID + " ASC")) {
       while (cursor != null && cursor.moveToNext()) {
         jobs.add(jobSpecFromCursor(cursor));
       }
@@ -132,7 +188,7 @@ public class JobDatabase extends Database {
     String   query = Jobs.JOB_SPEC_ID + " = ?";
     String[] args  = new String[]{ id };
 
-    databaseHelper.getWritableDatabase().update(Jobs.TABLE_NAME, contentValues, query, args);
+    getWritableDatabase().update(Jobs.TABLE_NAME, contentValues, query, args);
   }
 
   public synchronized void updateJobAfterRetry(@NonNull String id, boolean isRunning, int runAttempt, long nextRunAttemptTime, @NonNull String serializedData) {
@@ -145,14 +201,14 @@ public class JobDatabase extends Database {
     String   query = Jobs.JOB_SPEC_ID + " = ?";
     String[] args  = new String[]{ id };
 
-    databaseHelper.getWritableDatabase().update(Jobs.TABLE_NAME, contentValues, query, args);
+    getWritableDatabase().update(Jobs.TABLE_NAME, contentValues, query, args);
   }
 
   public synchronized void updateAllJobsToBePending() {
     ContentValues contentValues = new ContentValues();
     contentValues.put(Jobs.IS_RUNNING, 0);
 
-    databaseHelper.getWritableDatabase().update(Jobs.TABLE_NAME, contentValues, null, null);
+    getWritableDatabase().update(Jobs.TABLE_NAME, contentValues, null, null);
   }
 
   public synchronized void updateJobs(@NonNull List<JobSpec> jobs) {
@@ -160,7 +216,7 @@ public class JobDatabase extends Database {
       return;
     }
 
-    SQLiteDatabase db = databaseHelper.getWritableDatabase();
+    SQLiteDatabase db = getWritableDatabase();
 
     db.beginTransaction();
 
@@ -177,7 +233,6 @@ public class JobDatabase extends Database {
               values.put(Jobs.RUN_ATTEMPT, job.getRunAttempt());
               values.put(Jobs.MAX_ATTEMPTS, job.getMaxAttempts());
               values.put(Jobs.MAX_BACKOFF, job.getMaxBackoff());
-              values.put(Jobs.MAX_INSTANCES, job.getMaxInstances());
               values.put(Jobs.LIFESPAN, job.getLifespan());
               values.put(Jobs.SERIALIZED_DATA, job.getSerializedData());
               values.put(Jobs.SERIALIZED_INPUT_DATA, job.getSerializedInputData());
@@ -196,7 +251,7 @@ public class JobDatabase extends Database {
   }
 
   public synchronized void deleteJobs(@NonNull List<String> jobIds) {
-    SQLiteDatabase db = databaseHelper.getWritableDatabase();
+    SQLiteDatabase db = getWritableDatabase();
 
     db.beginTransaction();
 
@@ -219,7 +274,7 @@ public class JobDatabase extends Database {
   public synchronized @NonNull List<ConstraintSpec> getAllConstraintSpecs() {
     List<ConstraintSpec> constraints = new LinkedList<>();
 
-    try (Cursor cursor = databaseHelper.getReadableDatabase().query(Constraints.TABLE_NAME, null, null, null, null, null, null)) {
+    try (Cursor cursor = getReadableDatabase().query(Constraints.TABLE_NAME, null, null, null, null, null, null)) {
       while (cursor != null && cursor.moveToNext()) {
         constraints.add(constraintSpecFromCursor(cursor));
       }
@@ -231,7 +286,7 @@ public class JobDatabase extends Database {
   public synchronized @NonNull List<DependencySpec> getAllDependencySpecs() {
     List<DependencySpec> dependencies = new LinkedList<>();
 
-    try (Cursor cursor = databaseHelper.getReadableDatabase().query(Dependencies.TABLE_NAME, null, null, null, null, null, null)) {
+    try (Cursor cursor = getReadableDatabase().query(Dependencies.TABLE_NAME, null, null, null, null, null, null)) {
       while (cursor != null && cursor.moveToNext()) {
         dependencies.add(dependencySpecFromCursor(cursor));
       }
@@ -254,7 +309,6 @@ public class JobDatabase extends Database {
     contentValues.put(Jobs.RUN_ATTEMPT, job.getRunAttempt());
     contentValues.put(Jobs.MAX_ATTEMPTS, job.getMaxAttempts());
     contentValues.put(Jobs.MAX_BACKOFF, job.getMaxBackoff());
-    contentValues.put(Jobs.MAX_INSTANCES, job.getMaxInstances());
     contentValues.put(Jobs.LIFESPAN, job.getLifespan());
     contentValues.put(Jobs.SERIALIZED_DATA, job.getSerializedData());
     contentValues.put(Jobs.SERIALIZED_INPUT_DATA, job.getSerializedInputData());
@@ -295,7 +349,6 @@ public class JobDatabase extends Database {
                        cursor.getInt(cursor.getColumnIndexOrThrow(Jobs.MAX_ATTEMPTS)),
                        cursor.getLong(cursor.getColumnIndexOrThrow(Jobs.MAX_BACKOFF)),
                        cursor.getLong(cursor.getColumnIndexOrThrow(Jobs.LIFESPAN)),
-                       cursor.getInt(cursor.getColumnIndexOrThrow(Jobs.MAX_INSTANCES)),
                        cursor.getString(cursor.getColumnIndexOrThrow(Jobs.SERIALIZED_DATA)),
                        cursor.getString(cursor.getColumnIndexOrThrow(Jobs.SERIALIZED_INPUT_DATA)),
                        cursor.getInt(cursor.getColumnIndexOrThrow(Jobs.IS_RUNNING)) == 1,
@@ -313,4 +366,73 @@ public class JobDatabase extends Database {
                               cursor.getString(cursor.getColumnIndexOrThrow(Dependencies.DEPENDS_ON_JOB_SPEC_ID)),
                               false);
   }
+
+  private @NonNull SQLiteDatabase getReadableDatabase() {
+    return getWritableDatabase(databaseSecret.asString());
+  }
+
+  private @NonNull SQLiteDatabase getWritableDatabase() {
+    return getWritableDatabase(databaseSecret.asString());
+  }
+
+  @Override
+  public @NonNull SQLiteDatabase getSqlCipherDatabase() {
+    return getWritableDatabase();
+  }
+
+  private void dropTableIfPresent(@NonNull String table) {
+    if (DatabaseFactory.getInstance(application).hasTable(table)) {
+      Log.i(TAG, "Dropping original " + table + " table from the main database.");
+      DatabaseFactory.getInstance(application).getRawDatabase().rawExecSQL("DROP TABLE " + table);
+    }
+  }
+
+  private static void migrateJobSpecsFromPreviousDatabase(@NonNull SQLiteDatabase oldDb, @NonNull SQLiteDatabase newDb) {
+    try (Cursor cursor = oldDb.rawQuery("SELECT * FROM job_spec", null)) {
+      while (cursor.moveToNext()) {
+        ContentValues values = new ContentValues();
+
+        values.put(Jobs.JOB_SPEC_ID, CursorUtil.requireString(cursor, "job_spec_id"));
+        values.put(Jobs.FACTORY_KEY, CursorUtil.requireString(cursor, "factory_key"));
+        values.put(Jobs.QUEUE_KEY, CursorUtil.requireString(cursor, "queue_key"));
+        values.put(Jobs.CREATE_TIME, CursorUtil.requireLong(cursor, "create_time"));
+        values.put(Jobs.NEXT_RUN_ATTEMPT_TIME, CursorUtil.requireLong(cursor, "next_run_attempt_time"));
+        values.put(Jobs.RUN_ATTEMPT, CursorUtil.requireInt(cursor, "run_attempt"));
+        values.put(Jobs.MAX_ATTEMPTS, CursorUtil.requireInt(cursor, "max_attempts"));
+        values.put(Jobs.MAX_BACKOFF, CursorUtil.requireLong(cursor, "max_backoff"));
+        values.put(Jobs.LIFESPAN, CursorUtil.requireLong(cursor, "lifespan"));
+        values.put(Jobs.SERIALIZED_DATA, CursorUtil.requireString(cursor, "serialized_data"));
+        values.put(Jobs.SERIALIZED_INPUT_DATA, CursorUtil.requireString(cursor, "serialized_input_data"));
+        values.put(Jobs.IS_RUNNING, CursorUtil.requireInt(cursor, "is_running"));
+
+        newDb.insert(Jobs.TABLE_NAME, null, values);
+      }
+    }
+  }
+
+  private static void migrateConstraintSpecsFromPreviousDatabase(@NonNull SQLiteDatabase oldDb, @NonNull SQLiteDatabase newDb) {
+    try (Cursor cursor = oldDb.rawQuery("SELECT * FROM constraint_spec", null)) {
+      while (cursor.moveToNext()) {
+        ContentValues values = new ContentValues();
+
+        values.put(Constraints.JOB_SPEC_ID, CursorUtil.requireString(cursor, "job_spec_id"));
+        values.put(Constraints.FACTORY_KEY, CursorUtil.requireString(cursor, "factory_key"));
+
+        newDb.insert(Constraints.TABLE_NAME, null, values);
+      }
+    }
+  }
+
+  private static void migrateDependencySpecsFromPreviousDatabase(@NonNull SQLiteDatabase oldDb, @NonNull SQLiteDatabase newDb) {
+    try (Cursor cursor = oldDb.rawQuery("SELECT * FROM dependency_spec", null)) {
+      while (cursor.moveToNext()) {
+        ContentValues values = new ContentValues();
+
+        values.put(Dependencies.JOB_SPEC_ID, CursorUtil.requireString(cursor, "job_spec_id"));
+        values.put(Dependencies.DEPENDS_ON_JOB_SPEC_ID, CursorUtil.requireString(cursor, "depends_on_job_spec_id"));
+
+        newDb.insert(Dependencies.TABLE_NAME, null, values);
+      }
+    }
+  }
 }