Use Player.isPlaying in appropriate places.

This method should be used where we previously checked for active playback
by state==READY and playWhenReady=true. Using the new method ensures we take
audio focus into account for these usages.

Also update some method naming to avoid confusion with the isPlaying method.

Issue:#6203
PiperOrigin-RevId: 270910982

library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerControlView.java

@@ -748,14 +748,14 @@ public class PlayerControlView extends FrameLayout {
       return;
       return;
     }
     }
     boolean requestPlayPauseFocus = false;
     boolean requestPlayPauseFocus = false;
-    boolean playing = isPlaying();
+    boolean shouldShowPauseButton = shouldShowPauseButton();
     if (playButton != null) {
     if (playButton != null) {
-      requestPlayPauseFocus |= playing && playButton.isFocused();
-      playButton.setVisibility(playing ? GONE : VISIBLE);
+      requestPlayPauseFocus |= shouldShowPauseButton && playButton.isFocused();
+      playButton.setVisibility(shouldShowPauseButton ? GONE : VISIBLE);
     }
     }
     if (pauseButton != null) {
     if (pauseButton != null) {
-      requestPlayPauseFocus |= !playing && pauseButton.isFocused();
-      pauseButton.setVisibility(!playing ? GONE : VISIBLE);
+      requestPlayPauseFocus |= !shouldShowPauseButton && pauseButton.isFocused();
+      pauseButton.setVisibility(shouldShowPauseButton ? VISIBLE : GONE);
     }
     }
     if (requestPlayPauseFocus) {
     if (requestPlayPauseFocus) {
       requestPlayPauseFocus();
       requestPlayPauseFocus();
@@ -943,7 +943,7 @@ public class PlayerControlView extends FrameLayout {
     // Cancel any pending updates and schedule a new one if necessary.
     // Cancel any pending updates and schedule a new one if necessary.
     removeCallbacks(updateProgressAction);
     removeCallbacks(updateProgressAction);
     int playbackState = player == null ? Player.STATE_IDLE : player.getPlaybackState();
     int playbackState = player == null ? Player.STATE_IDLE : player.getPlaybackState();
-    if (playbackState == Player.STATE_READY && player.getPlayWhenReady()) {
+    if (player.isPlaying()) {
       long mediaTimeDelayMs =
       long mediaTimeDelayMs =
           timeBar != null ? timeBar.getPreferredUpdateDelay() : MAX_UPDATE_INTERVAL_MS;
           timeBar != null ? timeBar.getPreferredUpdateDelay() : MAX_UPDATE_INTERVAL_MS;
 
 
@@ -965,10 +965,10 @@ public class PlayerControlView extends FrameLayout {
   }
   }
 
 
   private void requestPlayPauseFocus() {
   private void requestPlayPauseFocus() {
-    boolean playing = isPlaying();
-    if (!playing && playButton != null) {
+    boolean shouldShowPauseButton = shouldShowPauseButton();
+    if (!shouldShowPauseButton && playButton != null) {
       playButton.requestFocus();
       playButton.requestFocus();
-    } else if (playing && pauseButton != null) {
+    } else if (shouldShowPauseButton && pauseButton != null) {
       pauseButton.requestFocus();
       pauseButton.requestFocus();
     }
     }
   }
   }
@@ -1149,7 +1149,7 @@ public class PlayerControlView extends FrameLayout {
     return true;
     return true;
   }
   }
 
 
-  private boolean isPlaying() {
+  private boolean shouldShowPauseButton() {
     return player != null
     return player != null
         && player.getPlaybackState() != Player.STATE_ENDED
         && player.getPlaybackState() != Player.STATE_ENDED
         && player.getPlaybackState() != Player.STATE_IDLE
         && player.getPlaybackState() != Player.STATE_IDLE
@@ -1220,6 +1220,11 @@ public class PlayerControlView extends FrameLayout {
     }
     }
 
 
     @Override
     @Override
+    public void onIsPlayingChanged(boolean isPlaying) {
+      updateProgress();
+    }
+
+    @Override
     public void onRepeatModeChanged(int repeatMode) {
     public void onRepeatModeChanged(int repeatMode) {
       updateRepeatModeButton();
       updateRepeatModeButton();
       updateNavigation();
       updateNavigation();

library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerNotificationManager.java

@@ -382,8 +382,6 @@ public class PlayerNotificationManager {
   private int visibility;
   private int visibility;
   @Priority private int priority;
   @Priority private int priority;
   private boolean useChronometer;
   private boolean useChronometer;
-  private boolean wasPlayWhenReady;
-  private int lastPlaybackState;
 
 
   /**
   /**
    * @deprecated Use {@link #createWithNotificationChannel(Context, String, int, int, int,
    * @deprecated Use {@link #createWithNotificationChannel(Context, String, int, int, int,
@@ -663,8 +661,6 @@ public class PlayerNotificationManager {
     }
     }
     this.player = player;
     this.player = player;
     if (player != null) {
     if (player != null) {
-      wasPlayWhenReady = player.getPlayWhenReady();
-      lastPlaybackState = player.getPlaybackState();
       player.addListener(playerListener);
       player.addListener(playerListener);
       startOrUpdateNotification();
       startOrUpdateNotification();
     }
     }
@@ -1070,10 +1066,9 @@ public class PlayerNotificationManager {
     // Changing "showWhen" causes notification flicker if SDK_INT < 21.
     // Changing "showWhen" causes notification flicker if SDK_INT < 21.
     if (Util.SDK_INT >= 21
     if (Util.SDK_INT >= 21
         && useChronometer
         && useChronometer
+        && player.isPlaying()
         && !player.isPlayingAd()
         && !player.isPlayingAd()
-        && !player.isCurrentWindowDynamic()
-        && player.getPlayWhenReady()
-        && player.getPlaybackState() == Player.STATE_READY) {
+        && !player.isCurrentWindowDynamic()) {
       builder
       builder
           .setWhen(System.currentTimeMillis() - player.getContentPosition())
           .setWhen(System.currentTimeMillis() - player.getContentPosition())
           .setShowWhen(true)
           .setShowWhen(true)
@@ -1138,7 +1133,7 @@ public class PlayerNotificationManager {
       stringActions.add(ACTION_REWIND);
       stringActions.add(ACTION_REWIND);
     }
     }
     if (usePlayPauseActions) {
     if (usePlayPauseActions) {
-      if (isPlaying(player)) {
+      if (shouldShowPauseButton(player)) {
         stringActions.add(ACTION_PAUSE);
         stringActions.add(ACTION_PAUSE);
       } else {
       } else {
         stringActions.add(ACTION_PLAY);
         stringActions.add(ACTION_PLAY);
@@ -1182,10 +1177,10 @@ public class PlayerNotificationManager {
     if (skipPreviousActionIndex != -1) {
     if (skipPreviousActionIndex != -1) {
       actionIndices[actionCounter++] = skipPreviousActionIndex;
       actionIndices[actionCounter++] = skipPreviousActionIndex;
     }
     }
-    boolean isPlaying = isPlaying(player);
-    if (pauseActionIndex != -1 && isPlaying) {
+    boolean shouldShowPauseButton = shouldShowPauseButton(player);
+    if (pauseActionIndex != -1 && shouldShowPauseButton) {
       actionIndices[actionCounter++] = pauseActionIndex;
       actionIndices[actionCounter++] = pauseActionIndex;
-    } else if (playActionIndex != -1 && !isPlaying) {
+    } else if (playActionIndex != -1 && !shouldShowPauseButton) {
       actionIndices[actionCounter++] = playActionIndex;
       actionIndices[actionCounter++] = playActionIndex;
     }
     }
     if (skipNextActionIndex != -1) {
     if (skipNextActionIndex != -1) {
@@ -1257,7 +1252,7 @@ public class PlayerNotificationManager {
     controlDispatcher.dispatchSeekTo(player, windowIndex, positionMs);
     controlDispatcher.dispatchSeekTo(player, windowIndex, positionMs);
   }
   }
 
 
-  private boolean isPlaying(Player player) {
+  private boolean shouldShowPauseButton(Player player) {
     return player.getPlaybackState() != Player.STATE_ENDED
     return player.getPlaybackState() != Player.STATE_ENDED
         && player.getPlaybackState() != Player.STATE_IDLE
         && player.getPlaybackState() != Player.STATE_IDLE
         && player.getPlayWhenReady();
         && player.getPlayWhenReady();
@@ -1328,11 +1323,12 @@ public class PlayerNotificationManager {
 
 
     @Override
     @Override
     public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
     public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
-      if (wasPlayWhenReady != playWhenReady || lastPlaybackState != playbackState) {
       startOrUpdateNotification();
       startOrUpdateNotification();
-        wasPlayWhenReady = playWhenReady;
-        lastPlaybackState = playbackState;
     }
     }
+
+    @Override
+    public void onIsPlayingChanged(boolean isPlaying) {
+      startOrUpdateNotification();
     }
     }
 
 
     @Override
     @Override