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Fix toggling fullscreen system UI on API 29 and below.

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This commit is contained in:
Alex Hart
2026-08-19 19:05:50 -04:00
committed by Cody Henthorne
parent 49586486c3
commit 6e8cac6fe6
1 changed files with 41 additions and 23 deletions
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app/src/main/java/org/thoughtcrime/securesms/util/FullscreenHelper.java
+41 -23
View File
@@ -91,32 +91,40 @@ public final class FullscreenHelper {
return new int[]{leftPad, rightPad};
}
@SuppressWarnings("deprecation")
public void showAndHideWithSystemUI(@NonNull Window window, @NonNull View... views) {
ViewCompat.setOnApplyWindowInsetsListener(window.getDecorView(), (view, insets) -> {
boolean hide = !areBarsVisible(insets);
if (Build.VERSION.SDK_INT >= 30) {
ViewCompat.setOnApplyWindowInsetsListener(window.getDecorView(), (view, insets) -> {
animateWithBars(!areBarsVisible(insets), views);
return ViewCompat.onApplyWindowInsets(view, insets);
});
} else {
window.getDecorView().setOnSystemUiVisibilityChangeListener(visibility -> {
animateWithBars((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0, views);
});
}
}
for (View target : views) {
if (target == null) {
continue;
}
target.animate()
.alpha(hide ? 0 : 1)
.withStartAction(() -> {
if (!hide) {
target.setVisibility(View.VISIBLE);
}
})
.withEndAction(() -> {
if (hide) {
target.setVisibility(View.INVISIBLE);
}
})
.start();
private static void animateWithBars(boolean hide, @NonNull View... views) {
for (View target : views) {
if (target == null) {
continue;
}
return ViewCompat.onApplyWindowInsets(view, insets);
});
target.animate()
.alpha(hide ? 0 : 1)
.withStartAction(() -> {
if (!hide) {
target.setVisibility(View.VISIBLE);
}
})
.withEndAction(() -> {
if (hide) {
target.setVisibility(View.INVISIBLE);
}
})
.start();
}
}
public void toggleUiVisibility() {
@@ -127,13 +135,23 @@ public final class FullscreenHelper {
}
}
@SuppressWarnings("deprecation")
public boolean isSystemUiVisible() {
return areBarsVisible(ViewCompat.getRootWindowInsets(activity.getWindow().getDecorView()));
if (Build.VERSION.SDK_INT >= 30) {
return areBarsVisible(ViewCompat.getRootWindowInsets(activity.getWindow().getDecorView()));
} else {
return (activity.getWindow().getDecorView().getSystemUiVisibility() & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0;
}
}
/**
* Whether the bars that {@link #showSystemUI()} / {@link #hideSystemUI()} control are currently on screen.
* <p>
* Only usable on API 30+. Below that, {@link WindowInsetsCompat#isVisible(int)} is emulated off of the inset
* sizes, and because we're edge-to-edge (and therefore laid out with {@code SYSTEM_UI_FLAG_LAYOUT_STABLE})
* those stay at their full height while the bars are hidden, making everything look permanently visible.
* The legacy visibility flags are the reliable signal there.
* <p>
* Checks the two bars individually rather than {@link WindowInsetsCompat.Type#systemBars()}, which also
* covers the caption bar: {@code isVisible} requires every requested type to be visible, and a phone window
* has no caption bar source, so the aggregate answer is always "hidden".