CODEWITHSUNDEEP
androidfirebasefirebase-cloud-messaging
Dinh Lam
Dinh Lam

Reputation: 765

How to get firebase token if onNewToken not called, because the token already created?

As we know we can get firebase token on onNewToken(...) in our class inherited of FirebaseMessagingService. But I have a question, that method will not call on update app case, and if I already have a token before, but I didn't save it. How to get it??

Example: In my class inherit from FirebaseMessagingService

class CustomFirebaseService : FirebaseMessagingService() {

override fun onNewToken(newToken: String) {
    supper.onNewToken(newToken)
    // I have token in here, but I already didn't save it on any where (sharedperf, db,..)
}

And now in my application, I need to use it, but I don't sure what the best way to get it??

class App: Application() {

    override fun onCreate() {
        super.onCreate()

        // I need to use token here, but method onNewToken will not called, because the current token is valid.
    }

}

Maybe, Can I use FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(..)? Do it duplicate with my custom service??

Upvotes: 1

Views: 806

Answers (1)

Frank van Puffelen
Frank van Puffelen

Reputation: 599946

As the Firebase documentation on getting the current registration token says:

FirebaseInstanceId.getInstance().getInstanceId()
    .addOnCompleteListener(new OnCompleteListener<InstanceIdResult>() {
        @Override
        public void onComplete(@NonNull Task<InstanceIdResult> task) {
            if (!task.isSuccessful()) {
                Log.w(TAG, "getInstanceId failed", task.getException());
                return;
            }

           // Get new Instance ID token
            String token = task.getResult().getToken();

           // Log and toast
            String msg = getString(R.string.msg_token_fmt, token);
            Log.d(TAG, msg);
            Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show();
        }
    });

You typically only need this in development, as the initial token is typically generated before you have an onNewToken. Once your app is in production, the onNewToken code will be called from the moment the first token is generated.

Upvotes: 1

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