android.app.remoteserviceexception: bad notification for startforeground

#1234 Hi Exoplayer Team, I am getting errors with the latest version 2.15.1 when trying to show notifications in the notification tray. Why is this issue here? I am using the following code.

      notificationManager = new PlayerNotificationManager
                .Builder(this, NOTIFICATION_ID, PLAYBACK_ID)
                .setMediaDescriptionAdapter(mediaDescriptionAdapter)
//                .setChannelNameResourceId(2)
//                .setChannelDescriptionResourceId(2)
                .setNotificationListener(notificationListener)
                .build();

and in the notificationlistener my code is

    private final PlayerNotificationManager.NotificationListener notificationListener =
            new PlayerNotificationManager.NotificationListener() {

                @Override
                public void onNotificationCancelled(int notificationId, boolean dismissedByUser) {
                    if (dismissedByUser) {
                        stopSelf();
                    }
                }

                @Override
                public void onNotificationPosted(int notificationId, @NotNull Notification notification, boolean ongoing) {
                    Toast.makeText(getApplicationContext(), "n " + notificationId, Toast.LENGTH_SHORT).show();
                    if (!ongoing) {
                        stopForeground(true);
                    } else {
//                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
//                            startForeground(notificationId, notification, ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PLAYBACK);
//                        } else {
//                            startForeground(notificationId, notification);
//                        }
                    }
                }
            };

the notification listener code works well in android 11 1 yeat back when I think I am using the 2.10.0 version, but now I think the issue is in android 11 only because of check-in version 9 and it works well. Please help me to fix it for my app because I have to publish an update of the app next week.

Hope you understand and help me to find out

Android Device - Redmi Note10S Android Version - 11

[marcbaechinger]

I marked this as a documentation candidate to document the constructor argument channelId in more detail/. It should say that the channel needs to be already created or else setChannelNameResourceId needs to be called.

[marcbaechinger]

Closing this issue as the need for an existing channel has been documented and there wasn’t any more activity. Please reopen if this is still an issue.