onNewToken() is not called

Question

I was trying to get the FCM working in my app in the past few days, and I saw that the onTokenRefreshed() function and FirebaseInstanceIdService in general, is deprecated. So I followed some firebase documentations and tutorials online, but none of them seemed to be working for me. My MyFirebaseMessagingService class is:

package com.example.android.aln4.Classes;  import android.util.Log; import com.google.firebase.messaging.FirebaseMessagingService;  public class MyFirebaseMessagingService extends FirebaseMessagingService {      private static final String TAG = "MyFirebaseMessaging";      @Override     public void onNewToken(String token) {         super.onNewToken(token);         Log.d(TAG,"Refreshed token: "+token);     } } 

and my manifest contains this following code:

<service android:name=".Classes.MyFirebaseMessagingService">     <intent-filter>         <action android:name="com.google.firebase.MESSAGING_EVENT" />     </intent-filter> </service> 

Plus, all of my firebae-related implemetations are up-to-date, as the following:

  //Firebase     implementation 'com.google.firebase:firebase-crash:16.2.1'     implementation 'com.firebase:firebase-client-android:2.5.2'     implementation 'com.google.firebase:firebase-core:16.0.6'     implementation 'com.google.firebase:firebase-database:16.0.6'     implementation 'com.firebase:firebase-client-android:2.5.2'     implementation 'com.firebaseui:firebase-ui-database:2.1.1'     implementation 'com.google.firebase:firebase-storage:16.0.5'     implementation 'com.google.firebase:firebase-firestore:18.0.0'     implementation 'com.google.firebase:firebase-messaging:17.3.4' 

My problem in general, is that whenever I run the app, doesn't matter if it's after uninstalling and installing or on a regular run, the onNewToken() function is not called, or at least I don't see it in the Logcat. Any sort of help would be appriciated :)

Answer 1

onNewToken method is just called when the token is generated, you should retrieve the token in an activity.

Add this to your activity:

FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(SplashActivity.this, new OnSuccessListener<InstanceIdResult>() {         @Override         public void onSuccess(InstanceIdResult instanceIdResult) {             String token = instanceIdResult.getToken();             Log.i("FCM Token", token);             saveToken(token);         }     }); 

Answer 2

December 2020 update : Using the new Firebase SDK (21.0.0) , you can get the token by FirebaseInstallations.getInstance() within your scope :

FirebaseInstallations.getInstance().getToken(false).addOnCompleteListener(new OnCompleteListener<InstallationTokenResult>() {           @Override           public void onComplete(@NonNull Task<InstallationTokenResult> task) {               if(!task.isSuccessful()){                   return;               }               // Get new Instance ID token               String token = task.getResult().getToken();            }       });