How to define if NotificationChannel was disabled by user (API 26)?

Question

I updated my code to API v26, set up NotificationChannels and I can see my notifications, but I have logic regarding disabled notifications. Before 26 I have something like:

NotificationManagerCompat.from(context).areNotificationsEnabled()

And this seems to be not useful now. So how can one know if notification channel is disabled in the settings?

Answer 1

I found that new ChannelNotification approach doesn't replace old logic, it adds one more layer of control for notifications. So now we have 2 scenarios, see Screenshot:

1. You can define if notifications enabled:

     NotificationManagerCompat.from(context).areNotificationsEnabled();
   

2. You can define if your notification is visible to user:

     NotificationManager notificationManager = (NotificationManager) 
     context.getSystemService(Context.NOTIFICATION_SERVICE);       
     NotificationChannel notificationChannel = 
     notificationManager.getNotificationChannel(channelId);      
     int importance = notificationChannel.getImportance();
   

If importance is NotificationManager.IMPORTANCE_NONE user will not see notification, but the notification is there, so you can use it with Foreground service and you should dismiss it. If importance is NotificationManager.IMPORTANCE_MIN or higher user will see notification.