fix(android): keep screen on on fullscreen (#3563)

add KEEP_SCREEN_ON flag when video is fullscreen & playing to avoid phone to go off.
inspired by 2d8466128d

android/src/main/java/com/brentvatne/exoplayer/ExoPlayerView.java

@@ -108,6 +108,10 @@ public final class ExoPlayerView extends FrameLayout implements AdViewProvider {
         }
     }
 
+    public boolean isPlaying() {
+        return player != null && player.isPlaying();
+    }
+
     public void setSubtitleStyle(SubtitleStyle style) {
         // ensure we reset subtile style before reapplying it
         subtitleLayout.setUserDefaultStyle();

android/src/main/java/com/brentvatne/exoplayer/FullScreenPlayerView.java

@@ -3,28 +3,73 @@ package com.brentvatne.exoplayer;
 import android.annotation.SuppressLint;
 import android.app.Dialog;
 import android.content.Context;
+import android.os.Handler;
 import android.view.ViewGroup;
+import android.view.Window;
+import android.view.WindowManager;
 import android.widget.FrameLayout;
 import android.widget.ImageButton;
 
 import androidx.activity.OnBackPressedCallback;
 import androidx.media3.ui.LegacyPlayerControlView;
 
+import com.brentvatne.common.toolbox.DebugLog;
+
+import java.lang.ref.WeakReference;
+
 @SuppressLint("PrivateResource")
 public class FullScreenPlayerView extends Dialog {
     private final LegacyPlayerControlView playerControlView;
     private final ExoPlayerView exoPlayerView;
+    private final ReactExoplayerView reactExoplayerView;
     private ViewGroup parent;
     private final FrameLayout containerView;
     private final OnBackPressedCallback onBackPressedCallback;
+    private final Handler mKeepScreenOnHandler;
+    private final Runnable mKeepScreenOnUpdater;
 
-    public FullScreenPlayerView(Context context, ExoPlayerView exoPlayerView, LegacyPlayerControlView playerControlView, OnBackPressedCallback onBackPressedCallback) {
+    private static class KeepScreenOnUpdater implements Runnable {
+        private final static long UPDATE_KEEP_SCREEN_ON_FLAG_MS = 200;
+        private final WeakReference<FullScreenPlayerView> mFullscreenPlayer;
+
+        KeepScreenOnUpdater(FullScreenPlayerView player) {
+            mFullscreenPlayer = new WeakReference<>(player);
+        }
+
+        @Override
+        public void run() {
+            try {
+                FullScreenPlayerView fullscreenVideoPlayer = mFullscreenPlayer.get();
+                if (fullscreenVideoPlayer != null) {
+                    final Window window = fullscreenVideoPlayer.getWindow();
+                    if (window != null) {
+                        boolean isPlaying = fullscreenVideoPlayer.exoPlayerView.isPlaying();
+                        if (isPlaying) {
+                            window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+                        } else {
+                            window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+                        }
+                    }
+                    fullscreenVideoPlayer.mKeepScreenOnHandler.postDelayed(this, UPDATE_KEEP_SCREEN_ON_FLAG_MS);
+                }
+            } catch (Exception ex) {
+                DebugLog.e("ExoPlayer Exception", "Failed to flag FLAG_KEEP_SCREEN_ON on fullscreeen.");
+                DebugLog.e("ExoPlayer Exception", ex.toString());
+            }
+        }
+    }
+
+    public FullScreenPlayerView(Context context, ExoPlayerView exoPlayerView, ReactExoplayerView reactExoplayerView, LegacyPlayerControlView playerControlView, OnBackPressedCallback onBackPressedCallback) {
         super(context, android.R.style.Theme_Black_NoTitleBar_Fullscreen);
         this.playerControlView = playerControlView;
         this.exoPlayerView = exoPlayerView;
+        this.reactExoplayerView = reactExoplayerView;
         this.onBackPressedCallback = onBackPressedCallback;
         containerView = new FrameLayout(context);
         setContentView(containerView, generateDefaultLayoutParams());
+
+        mKeepScreenOnUpdater = new KeepScreenOnUpdater(this);
+        mKeepScreenOnHandler = new Handler();
     }
 
     @Override
@@ -53,6 +98,7 @@ public class FullScreenPlayerView extends Dialog {
 
     @Override
     protected void onStop() {
+        mKeepScreenOnHandler.removeCallbacks(mKeepScreenOnUpdater);
         containerView.removeView(exoPlayerView);
         parent.addView(exoPlayerView, generateDefaultLayoutParams());
 
@@ -70,6 +116,15 @@ public class FullScreenPlayerView extends Dialog {
         super.onStop();
     }
 
+    @Override
+    public void onAttachedToWindow() {
+        super.onAttachedToWindow();
+
+        if (reactExoplayerView.getPreventsDisplaySleepDuringVideoPlayback()) {
+            mKeepScreenOnHandler.post(mKeepScreenOnUpdater);
+        }
+    }
+
     private FrameLayout.LayoutParams generateDefaultLayoutParams() {
         FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(
                 FrameLayout.LayoutParams.MATCH_PARENT,

android/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java

@@ -406,7 +406,7 @@ public class ReactExoplayerView extends FrameLayout implements
         }
 
         if (fullScreenPlayerView == null) {
-            fullScreenPlayerView = new FullScreenPlayerView(getContext(), exoPlayerView, playerControlView, new OnBackPressedCallback(true) {
+            fullScreenPlayerView = new FullScreenPlayerView(getContext(), exoPlayerView, this, playerControlView, new OnBackPressedCallback(true) {
                 @Override
                 public void handleOnBackPressed() {
                     setFullscreen(false);
@@ -1966,6 +1966,10 @@ public class ReactExoplayerView extends FrameLayout implements
         this.disableBuffering = disableBuffering;
     }
 
+    public boolean getPreventsDisplaySleepDuringVideoPlayback() {
+        return preventsDisplaySleepDuringVideoPlayback;
+    }
+
     private void updateFullScreenButtonVisbility() {
         if (playerControlView != null) {
             final ImageButton fullScreenButton = playerControlView.findViewById(R.id.exo_fullscreen);

examples/basic/src/VideoPlayer.tsx

@@ -790,6 +790,7 @@ class VideoPlayer extends Component {
           selectedTextTrack={this.state.selectedTextTrack}
           selectedAudioTrack={this.state.selectedAudioTrack}
           playInBackground={false}
+          preventsDisplaySleepDuringVideoPlayback={true}
         />
       </TouchableOpacity>
     );