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android: add MainActivity.java hooks for ResizingLayout #596

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Merged
not-fl3 merged 1 commit into from
Jan 1, 2026
Merged

android: add MainActivity.java hooks for ResizingLayout #596

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21 changes: 19 additions & 2 deletions java/MainActivity.java
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Original file line number Diff line number Diff line change
Expand Up @@ -199,21 +199,38 @@ class ResizingLayout
LinearLayout
implements
View.OnApplyWindowInsetsListener {
//% RESIZING_LAYOUT_BODY

public ResizingLayout(Context context){
super(context);
public ResizingLayout(MainActivity activity){
super(activity);
// When viewing in landscape mode with keyboard shown, there are
// gaps on both sides so we fill the negative space with black.
setBackgroundColor(Color.BLACK);
setOnApplyWindowInsetsListener(this);

//% RESIZING_LAYOUT_CONSTRUCTOR
}

@Override
public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) {
// This handler provides a default impl which resizes content when the
// IME is shown or hidden.
//
// However this will lead to flickers in your app as the content is
// resized before you have a chance to redraw it.
//
// The workaround for now is:
// * Get IME and system insets and send them to your app.
// * Notify your app to draw and apply the insets to fit.
// * Disable this function by returning early.

//% RESIZING_LAYOUT_ON_APPLY_WINDOW_INSETS

if (Build.VERSION.SDK_INT >= 30) {
Insets imeInsets = insets.getInsets(WindowInsets.Type.ime());
Insets sysInsets = insets.getInsets(WindowInsets.Type.systemBars());

// When IME is visible then we dont need bottom inset
int bottomPadding = sysInsets.bottom;
if (imeInsets.bottom > 0) {
bottomPadding = imeInsets.bottom;
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