Use ERROR_CODE_BEHIND_LIVE_WINDOW instead of instanceof checks

PiperOrigin-RevId: 375514509

demos/main/src/main/java/com/google/android/exoplayer2/demo/PlayerActivity.java

@@ -34,6 +34,7 @@ import androidx.appcompat.app.AppCompatActivity;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ExoPlaybackException;
 import com.google.android.exoplayer2.MediaItem;
+import com.google.android.exoplayer2.PlaybackException;
 import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.RenderersFactory;
 import com.google.android.exoplayer2.SimpleExoPlayer;
@@ -43,7 +44,6 @@ import com.google.android.exoplayer2.ext.ima.ImaAdsLoader;
 import com.google.android.exoplayer2.mediacodec.MediaCodecRenderer.DecoderInitializationException;
 import com.google.android.exoplayer2.mediacodec.MediaCodecUtil.DecoderQueryException;
 import com.google.android.exoplayer2.offline.DownloadRequest;
-import com.google.android.exoplayer2.source.BehindLiveWindowException;
 import com.google.android.exoplayer2.source.DefaultMediaSourceFactory;
 import com.google.android.exoplayer2.source.MediaSourceFactory;
 import com.google.android.exoplayer2.source.TrackGroupArray;
@@ -413,20 +413,6 @@ public class PlayerActivity extends AppCompatActivity
     Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
   }
 
-  private static boolean isBehindLiveWindow(ExoPlaybackException e) {
-    if (e.type != ExoPlaybackException.TYPE_SOURCE) {
-      return false;
-    }
-    Throwable cause = e.getSourceException();
-    while (cause != null) {
-      if (cause instanceof BehindLiveWindowException) {
-        return true;
-      }
-      cause = cause.getCause();
-    }
-    return false;
-  }
-
   private class PlayerEventListener implements Player.EventListener {
 
     @Override
@@ -439,7 +425,7 @@ public class PlayerActivity extends AppCompatActivity
 
     @Override
     public void onPlayerError(@NonNull ExoPlaybackException e) {
-      if (isBehindLiveWindow(e)) {
+      if (e.errorCode == PlaybackException.ERROR_CODE_BEHIND_LIVE_WINDOW) {
         player.seekToDefaultPosition();
         player.prepare();
       } else {

docs/live-streaming.md

@@ -130,11 +130,12 @@ Available configuration values are:
 If automatic playback speed adjustment is not desired, it can be disabled by
 setting `minPlaybackSpeed` and `maxPlaybackSpeed` to `1.0f`.
 
-## BehindLiveWindowException ##
+## BehindLiveWindowException and ERROR_CODE_BEHIND_LIVE_WINDOW ##
 
 The playback position may fall behind the live window, for example if the player
 is paused or buffering for a long enough period of time. If this happens then
-playback will fail and a `BehindLiveWindowException` will be reported via
+playback will fail and an exception with error code
+`ERROR_CODE_BEHIND_LIVE_WINDOW` will be reported via
 `Player.Listener.onPlayerError`. Application code may wish to handle such
 errors by resuming playback at the default position. The [PlayerActivity][] of
 the demo app exemplifies this approach.
@@ -142,7 +143,7 @@ the demo app exemplifies this approach.
 ~~~
 @Override
 public void onPlayerError(ExoPlaybackException e) {
-  if (isBehindLiveWindow(e)) {
+  if (e.errorCode == PlaybackException.ERROR_CODE_BEHIND_LIVE_WINDOW) {
     // Re-initialize player at the current live window default position.
     player.seekToDefaultPosition();
     player.prepare();
@@ -150,20 +151,6 @@ public void onPlayerError(ExoPlaybackException e) {
     // Handle other errors.
   }
 }
-
-private static boolean isBehindLiveWindow(ExoPlaybackException e) {
-  if (e.type != ExoPlaybackException.TYPE_SOURCE) {
-    return false;
-  }
-  Throwable cause = e.getSourceException();
-  while (cause != null) {
-    if (cause instanceof BehindLiveWindowException) {
-      return true;
-    }
-    cause = cause.getCause();
-  }
-  return false;
-}
 ~~~
 {: .language-java}