Add missing Future cancellation checks

Future.isDone and getDone doesn't imply the Future was successful
and it may have been cancelled or failed.

In case where we handle failure, we should also handle cancellation
to avoid CancellationException to bubble up unchecked.

In demo app code where we use isDone for field initialization, we
want to crash in the failure case (usually security exception where
the connection is disallowed), but we want to gracefully handle
cancellation. Cancellation of these variables usually happens in
Activity.onDestroy/onStop, but methods may be called after this point.

#minor-release

PiperOrigin-RevId: 572178018

demos/session/src/main/java/androidx/media3/demo/session/PlayableFolderActivity.kt

@@ -43,7 +43,7 @@ import com.google.common.util.concurrent.ListenableFuture
 class PlayableFolderActivity : AppCompatActivity() {
   private lateinit var browserFuture: ListenableFuture<MediaBrowser>
   private val browser: MediaBrowser?
-    get() = if (browserFuture.isDone) browserFuture.get() else null
+    get() = if (browserFuture.isDone && !browserFuture.isCancelled) browserFuture.get() else null
 
   private lateinit var mediaList: ListView
   private lateinit var mediaListAdapter: PlayableMediaItemArrayAdapter

demos/session/src/main/java/androidx/media3/demo/session/PlayerActivity.kt

@@ -45,7 +45,8 @@ import com.google.common.util.concurrent.MoreExecutors
 class PlayerActivity : AppCompatActivity() {
   private lateinit var controllerFuture: ListenableFuture<MediaController>
   private val controller: MediaController?
-    get() = if (controllerFuture.isDone) controllerFuture.get() else null
+    get() =
+      if (controllerFuture.isDone && !controllerFuture.isCancelled) controllerFuture.get() else null
 
   private lateinit var playerView: PlayerView
   private lateinit var mediaItemListView: ListView

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

@@ -53,6 +53,7 @@
 import com.google.errorprone.annotations.CanIgnoreReturnValue;
 import java.util.Arrays;
 import java.util.List;
+import java.util.concurrent.CancellationException;
 import java.util.concurrent.ExecutionException;
 import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
 
@@ -348,7 +349,7 @@ public final MediaNotification createNotification(
         if (bitmapFuture.isDone()) {
           try {
             builder.setLargeIcon(Futures.getDone(bitmapFuture));
-          } catch (ExecutionException e) {
+          } catch (CancellationException | ExecutionException e) {
             Log.w(TAG, getBitmapLoadErrorMessage(e));
           }
         } else {

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

@@ -214,7 +214,7 @@ public void updateNotification(MediaSession session, boolean startInForegroundRe
     if (controllerAndListener != null && controllerAndListener.controller.isDone()) {
       try {
         mediaNotificationController = Futures.getDone(controllerAndListener.controller);
-      } catch (ExecutionException e) {
+      } catch (CancellationException | ExecutionException e) {
         // Ignore.
       }
     }
@@ -323,7 +323,7 @@ private MediaController getConnectedControllerForSession(MediaSession session) {
     }
     try {
       return Futures.getDone(controllerAndListener.controller);
-    } catch (ExecutionException exception) {
+    } catch (CancellationException | ExecutionException exception) {
       // We should never reach this.
       throw new IllegalStateException(exception);
     }

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

@@ -1375,7 +1375,7 @@ private void updateMetadataIfChanged() {
         if (bitmapFuture.isDone()) {
           try {
             artworkBitmap = Futures.getDone(bitmapFuture);
-          } catch (ExecutionException e) {
+          } catch (CancellationException | ExecutionException e) {
             Log.w(TAG, getBitmapLoadErrorMessage(e));
           }
         } else {