FirebaseInstanceId.getInstance().getToken() deprecated how to save token in DB

Question

i wan't to know how to implement the new FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener into my own code so i can retrieve the token and save it into the database to use FCM and identify every user.

Actually i have the following code:

if (task.isSuccessful()) {
final String deviceToken = FirebaseInstanceId.getInstance().getToken();

Map<String, Object> createUser = new HashMap<>();
                                createUser.put("name", name);
                                createUser.put("email", email);
                                createUser.put("device_token", deviceToken);

Ref.child("Users").child(task.getResult().getUser().getUid()).updateChildren(createUser);

according to actual firebase instructions, i should modify as follows:

FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(MainActivity.this, new OnSuccessListener<InstanceIdResult>(){
    @Override
    public void onSuccess(InstanceIdResult instanceIdResult) {
    String deviceToken = instanceIdResult.getToken();
    Log.e("newToken", deviceToken);
    }
});

Map<String, Object> createUser = new HashMap<>();
                                createUser.put("name", name);
                                createUser.put("email", email);
                                createUser.put("device_token", deviceToken);

Ref.child("Users").child(task.getResult().getUser().getUid()).updateChildren(createUser);

but i don't know how to get the deviceToken string out of the method, should i save it to shared preferences and then retrieve it from there?

Because if i want to declare "deviceToken" as global, it won't be allowed as it needs to be declared final.

Thanks!

Perform the database operation inside the OnSuccessListener callback when the token is first available. — Doug Stevenson, Dec 27 '19 at 23:42
Check this out `https://stackoverflow.com/a/65088085/7436566` — OhhhThatVarun, Dec 01 '20 at 09:43

score 2 · Answer 1 · answered Dec 02 '20 at 04:28

its deprecated, in gradle update implementation 'com.google.firebase:firebase-messaging:21.0.0' use code below:

FirebaseMessaging.getInstance().getToken().addOnCompleteListener(new OnCompleteListener<String>() {
            @Override
            public void onComplete(@NonNull Task<String> task) {
                if (!task.isSuccessful()) {
                    return;
                }
                // Get new FCM registration token
                String token= task.getResult();
            }
        });

score 1 · Accepted Answer · answered Dec 28 '19 at 00:08

You should save the token from within the onSuccess callback of the getInstanceId() call:

FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(MainActivity.this, new OnSuccessListener<InstanceIdResult>(){
  @Override
  public void onSuccess(InstanceIdResult instanceIdResult) {
    String deviceToken = instanceIdResult.getToken();
    Log.e("newToken", deviceToken);

    ... save the token to your database here
  }
});

FirebaseInstanceId.getInstance().getToken() deprecated how to save token in DB

2 Answers2