Update PlayerNotficationManager to set PendingIntent.FLAG_IMMUTABLE on its Broadcast intent.

In Android 12 mutability flags have to be set on PendingIntents. If they are not, and the app targets Android 12, then the app will be crashed by the system.

PiperOrigin-RevId: 373427591

RELEASENOTES.md

@@ -45,6 +45,8 @@
 *   HLS
 *   HLS
     *   Use the PRECISE attribute in EXT-X-START to select the default start
     *   Use the PRECISE attribute in EXT-X-START to select the default start
         position.
         position.
+*   PlayerNotificationManager:
+    *   Add `PendingIntent.FLAG_IMMUTABLE` flag to BroadcastReceiver to support Android 12.
 
 
 ### 2.14.0 (2021-05-13)
 ### 2.14.0 (2021-05-13)
 
 

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

@@ -1380,8 +1380,15 @@ public class PlayerNotificationManager {
       String action, Context context, int instanceId) {
       String action, Context context, int instanceId) {
     Intent intent = new Intent(action).setPackage(context.getPackageName());
     Intent intent = new Intent(action).setPackage(context.getPackageName());
     intent.putExtra(EXTRA_INSTANCE_ID, instanceId);
     intent.putExtra(EXTRA_INSTANCE_ID, instanceId);
-    return PendingIntent.getBroadcast(
-        context, instanceId, intent, PendingIntent.FLAG_UPDATE_CURRENT);
+
+    int pendingFlags;
+    if (Util.SDK_INT >= 23) {
+      pendingFlags = PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE;
+    } else {
+      pendingFlags = PendingIntent.FLAG_UPDATE_CURRENT;
+    }
+
+    return PendingIntent.getBroadcast(context, instanceId, intent, pendingFlags);
   }
   }
 
 
   @SuppressWarnings("nullness:argument.type.incompatible")
   @SuppressWarnings("nullness:argument.type.incompatible")