Set notification foreground service behaviour starting with API 31

When the foreground service type is set to `mediaPlayiback` this shouldn't
be required. However, some reports from users say that setting the
foreground service behavor fixes some problems on some devices. Setting
it explicitely with this change makes sure users don't have to do that
workaround themselves.

Issue: androidx#167
PiperOrigin-RevId: 557608577

RELEASENOTES.md

@@ -145,6 +145,9 @@ This release includes the following changes since
 *   Effect:
     *   Add `VideoFrameProcessor.queueInputBitmap(Bitmap, Iterator<Long>)`
         queuing bitmap input by timestamp.
+    *   Set the notifications foreground service behavior to
+        `FOREGROUND_SERVICE_IMMEDIATE` in `DefaultMediaNotificationProvider`
+        ([#167](https://github.com/androidx/media/issues/167)).
 *   UI:
     *   Add a `Player.Listener` implementation for Wear OS devices that handles
         playback suppression due to

libraries/session/build.gradle

@@ -43,6 +43,7 @@ dependencies {
     compileOnly 'org.checkerframework:checker-qual:' + checkerframeworkVersion
     implementation 'androidx.collection:collection:' + androidxCollectionVersion
     implementation 'androidx.media:media:' + androidxMediaVersion
+    implementation 'androidx.core:core:' + androidxCoreVersion
     androidTestImplementation 'com.squareup.okhttp3:mockwebserver:' + okhttpVersion
     androidTestImplementation project(modulePrefix + 'test-utils')
     androidTestImplementation project(modulePrefix + 'test-data')

libraries/session/src/main/java/androidx/media3/session/DefaultMediaNotificationProvider.java

@@ -371,6 +371,10 @@ public final MediaNotification createNotification(
         .setShowWhen(displayElapsedTimeWithChronometer)
         .setUsesChronometer(displayElapsedTimeWithChronometer);
 
+    if (Util.SDK_INT >= 31) {
+      Api31.setForegroundServiceBehavior(builder);
+    }
+
     Notification notification =
         builder
             .setContentIntent(mediaSession.getSessionActivity())
@@ -692,6 +696,14 @@ public static void createNotificationChannel(
     }
   }
 
+  @RequiresApi(31)
+  private static class Api31 {
+    @DoNotInline
+    public static void setForegroundServiceBehavior(NotificationCompat.Builder builder) {
+      builder.setForegroundServiceBehavior(Notification.FOREGROUND_SERVICE_IMMEDIATE);
+    }
+  }
+
   private static String getBitmapLoadErrorMessage(Throwable throwable) {
     return "Failed to load bitmap: " + throwable.getMessage();
   }