Android 11 media resumption makes second notification

Question

I have implemented media resumption to show recent tracks after phone restart. According to dev blog After tapping play button "static media controls will be swapped with the media controls created from your notification" but for me it is not swapped and I have static media control notification and new media notification created by that. What could be wrong. How the system know what notification should be swapped?

My code:

public BrowserRoot onGetRoot(@NonNull String clientPackageName, int clientUid,
                                 @Nullable Bundle rootHints) {


        //ANDROID 11 playback resumption - https://developer.android.com/guide/topics/media/media-controls#java
        if (rootHints != null) {
            if (rootHints.getBoolean(BrowserRoot.EXTRA_RECENT)) {
                // Return a tree with a single playable media item for resumption.
                Bundle extras = new Bundle();
                extras.putBoolean(BrowserRoot.EXTRA_RECENT, true);

                KLog.d(clientPackageName + " -> onGetRoot BrowserRoot.EXTRA_RECENT");


                return new BrowserRoot(MEDIA_ID_RECENT, extras);
            }
        }

        

        return new BrowserRoot(MEDIA_ID_ROOT, null);
    }

onPlay:

  @Override
        public void onPlay() {
            super.onPlay();

            CommonOperations.crashLog("mediaSessionCallback onPlay");
            KLog.d("mediaSessionCallback onPlay");

            fakeStartForeground();

            if (realm == null || realm.isClosed()) {
                initRealm();
            }

            if (playlist != null && currentEpisode != null) {
                play();
            } else {
                List<Episode> unfinished = UserDataManager.getInstance(URLPlayerService.this)
                        .getUnfinishedEpisodesData();
                if (unfinished != null && unfinished.size() > 0) {
                    EpisodePlaylist list = new EpisodePlaylist(unfinished);
                    URLPlayerService.startActionSetPlaylist(URLPlayerService.this, list, 0, true);
                } else {
                    KLog.w("stopself");
                    if (!wasForegroudStart) {
                        fakeStartForeground();
                    }
                    CommonOperations
                            .crashLog("stopself #" + new Exception().getStackTrace()[0].getLineNumber());
                    stopSelf();
                    cancelNotification();
                }
            }
        }

Answer 1

I think I have fixed my issue. There is probably some bud in Android 11 and when I used startForeground with not MediaStyle notification before using MediaStyle notification the problem occurs very often. Even without it I get double notifications from time to time.

I have ended up with using PlayerNotificationManager from ExoPlayer extension.