71.4 Detecting Picture-in-Picture Mode Changes
As discussed in the previous chapter, PiP mode changes are detected by overriding the onPictureInPictureModeChanged() method within the affected activity. In this case, the method needs to be written such that it can detect whether the activity is entering or exiting PiP mode and to take appropriate action to re-activate the PiP button and the playback controls. Remaining within the MainActivity.java file, add this method now:
@Override
public void onPictureInPictureModeChanged(boolean isInPictureInPictureMode) {
super.onPictureInPictureModeChanged(isInPictureInPictureMode);
Button pipButton = findViewById(R.id.pipButton);
if (isInPictureInPictureMode) {
} else {
pipButton.setVisibility(View.VISIBLE);
...
