FirebaseInstanceIdService is deprecated now

Carvia Tech | August 31, 2019 | 2 min read | 3,780 views

FirebaseInstanceIdService is deprecated now

Recently got many updates in firebase dependencies, one big change is that now FirebaseInstanceIdService is deprecated in favor of onNewToken in FirebaseMessagingService.

This class was deprecated.

In favour of overriding onNewToken in FirebaseMessagingService. Once that has been implemented, this service can be safely removed.

What to do now?

  1. There is no need for FirebaseInstanceIdService to receive FCM token from firebase, instead FirebaseMessagingService will take care of providing new token now. So we can safely remove FirebaseInstanceIdService class from our codebase.

  2. Now we need to @Override onNewToken() get Token in FirebaseMessagingService. This method will be called whenever a token is refreshed by firebase server.

  3. Change the way fcm token is accessed from any activity using newer mechanism.

Thus our FirebaseMessagingService will look like below:
public class MyFirebaseMsgService extends FirebaseMessagingService {

    public void onNewToken(String s) {
        Log.e("NEW_TOKEN", refreshedToken);
         // Get updated InstanceID token.
         // If you want to send messages to this application instance or
         // manage this apps subscriptions on the server side, send the
         // Instance ID token to your app server.

         //TODO: Send Token to Server

    public void onMessageReceived(RemoteMessage remoteMessage) {
        // Not getting messages here? See why this may be:
        Log.d(TAG, "From: " + remoteMessage.getFrom());
        // Check if message contains a data payload.

Also, we need to make sure that this class is properly registered in AndroidManifest.xml

            <action android:name="" />

How to get Token in your activity?

Now FirebaseInstanceId.getInstance().getToken() is also deprecated.

Old approach to get Token
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
Log.d("FCM", "Refreshed Device token: " + refreshedToken);

New way to get Token in Activity is this:

New way to get FCM Token in your activity
FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener( MyActivity.this,  new OnSuccessListener<InstanceIdResult>() {
     public void onSuccess(InstanceIdResult instanceIdResult) {
           String newToken = instanceIdResult.getToken();
           Log.e("newToken", newToken);


Hope that helps! happy coding.

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