Does SimpleExoPlayerView have controller visibility changed events?

Question

I'm trying to implement a full screen mode with SimpleExoPlayerView. I've got this mostly working using setSystemUiVisibility.

During onCreate i add a OnSystemUiVisibilityChange listener to sync hiding the player controls with the actionbar.

    @Override
public void onCreate(Bundle savedInstanceState) {

    View decorView = getWindow().getDecorView();
    decorView.setOnSystemUiVisibilityChangeListener
            (onSystemUiChange());

    hideSystemUI();
}

In the OnSystemUiVisibilityChangeListener i'm also setting a timeout that matches the simpleExoplayerViews timeout so the controls and action bar are hidden at the same time.

    @NonNull
private View.OnSystemUiVisibilityChangeListener onSystemUiChange() {
    return new View.OnSystemUiVisibilityChangeListener() {
        @Override
        public void onSystemUiVisibilityChange(int visibility) {
            if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
                mSimpleExoPlayerView.showController();
                final Handler handler = new Handler();
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        //sync the hide system ui with 
                        //simpleExoPlayerView's auto hide timeout
                        hideSystemUI();
                    }
                }, mSimpleExoPlayerView.getControllerShowTimeoutMs());

            } else {
                mSimpleExoPlayerView.hideController();
            }
        }
    };
}

private void hideSystemUI() {
    View rootView = findViewById(R.id.root);
    rootView.setSystemUiVisibility(
            View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                    | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION // hide nav bar
                    | View.SYSTEM_UI_FLAG_FULLSCREEN // hide status bar
    );
}

This works pretty well except in one case. If you tap the screen and then tap it again before the SimpleExoPlayerView controls timeout the SimpleExoPlayerView are hidden but the system ui do not get set until the timeout. Is there any events i can hook into instead?

I've tried setting a onClick and onTouch listener for my root layout but these events are not fired, i suspect SimpleExoPlayerView might be swallowing them?

Answer 1

ExoPlayer 2.10.4 has it.

exoplayer PlayerView has a method called

public void setControllerVisibilityListener(PlayerControlView.VisibilityListener listener) {
}

Answer 2

As of 2.6.1, SimpleExoPlayerView doesn't seem to have any visibility change listeners for the controls, but PlaybackControlView has. However, it's stored in a private field in SimpleExoPlayerView and there's no builtin way to a access it. To set your own listener, you'll either have to:

• copy SimpleExoPlayerView.java to your project and make the required changes,
• use reflection (don't forget to add proguard rules, if needed),
• override exo_simple_player_view.xml and make sure it contains a PlaybackControlView, then find it using findViewById,
• find it manually by traversing the view hierarchy.

In my opinion, the first and third options are the nicest, but the last one requires the least amount of changes, and it also works very well. Here is an example:

import com.google.android.exoplayer2.ui.PlaybackControlView;
import com.google.android.exoplayer2.ui.SimpleExoPlayerView;

public SomeActivity extends Activity implements PlaybackControlView.VisibilityListener {

    private initExoPlayer() {
        // ...

        addPlaybackControlVisibilityListener(mSimpleExoPlayerView, this);
    }

    @Override
    public void onVisibilityChange(int visibility) {
        // show/hide system ui here
    }

    private static void addPlaybackControlVisibilityListener(SimpleExoPlayerView playerView, PlaybackControlView.VisibilityListener listener) {
        PlaybackControlView playbackControlView = findPlaybackControlView(playerView);
        if (playbackControlView != null)
            playbackControlView.setVisibilityListener(listener);
    }

    private static PlaybackControlView findPlaybackControlView(ViewGroup viewGroup) {
        for (int i = 0; i < viewGroup.getChildCount(); i++) {
            View child = viewGroup.getChildAt(i);

            if (child instanceof PlaybackControlView)
                return (PlaybackControlView) child;

            if (child instanceof ViewGroup) {
                PlaybackControlView result = findPlaybackControlView((ViewGroup) child);
                if (result != null)
                    return result;
            }
        }

        return null;
    }
}