Unsubscribe from all topics at once from Firebase Messaging

Question

Is there any way to unsubscribe from all topics at once?

I'm using Firebase Messaging to receive push notification from some topics subscribed, and somehow I need to unsubscribe from all topics without unsubscribing one by one. Is that possible?

Answer 1

You can use Instance API to query all the available topics subscribed to given token and than call multiple request to unsubscribe from all the topics.

However, if you want to stop receiving from all the topics and then the token is not useful at all, you can call FirebaseInstanceId.getInstance().deleteInstanceId() (reference: deleteInstanceId() and surround with a try/catch for a potential IOException) that will reset the instance id and than again you can subscribe to new topics from the new instance id and token.

Hope this helps someone.

Answer 2

For Java users:

If you want to do it topic wise, refer others answers and If you want to stop recieving FCM push notification, do below:

new Thread(new Runnable() {     @Override     public void run() {         try {             FirebaseInstanceId.getInstance().deleteInstanceId();         } catch (IOException e) {             e.printStackTrace();         }     } }).start(); 

I have placed deleteInstanceId() in a separate thread to stop java.io.IOException: MAIN_THREAD W/System.err and wrapped with try / catch to handle IOException.