Firebase Instance Id: Deprecation Of Getid() In 21.0.0

With the recent release of FirebaseInstanceId and FirebaseCloudMessaging (21.0.0) Firebase has deprecated iid package and both getToken() and getId() methods are now deprecated. Ac

Solution 1:

FirebaseInstanceId class is deprecated, to get token use FirebaseMessagingClass. The token can be generated using the following code:

FirebaseMessaging.getInstance().getToken()
.addOnCompleteListener(newOnCompleteListener<String>() {
    @OverridepublicvoidonComplete(@NonNull Task<String> task) {
      if (!task.isSuccessful()) {
        Log.w(TAG, "Fetching FCM registration token failed", task.getException());
        return;
      }

      // Get new FCM registration tokenString token = task.getResult();

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

Regarding the Firebase InstanceId, this is what the official document says:

public Task getInstanceId () -> This method is deprecated. For an instance identifier, use FirebaseInstallations.getId() instead. For an FCM registration token, use FirebaseMessaging.getToken() instead.

Solution 2:

Fcm Token

Before deprecation

valfcmToken= FirebaseInstanceId.getInstance().getToken()

Replacement

valfcmToken= FirebaseMessaging.getInstance().getToken()

---

FirebaseInstanceId#getId

Before deprecation

valistanceId= FirebaseInstanceId.getInstance().getId()

Replacement

Checking out the code of FirebaseInstanceId#getId() I saw the suggestion that you should use FirebaseInstallations#getId instead.

This method is deprecated

Use FirebaseInstallations.getId() instead.

valinstanceId= FirebaseInstallation.getInstance().getId()

Solution 3:

• FCM Token:

  Use firebase_messaging package

  String? token = await FirebaseMessaging.instance.getToken();
  

• Installation ID:

  Use flutterfire_installations package

  String id = await FirebaseInstallations.instance.getId();
  

• Installation auth token:

  String token = await FirebaseInstallations.instance.getToken();
  

Solution 4:

try this one

publicStringgetToken() {
String token;
        FirebaseMessaging.getInstance().getToken()
                .addOnCompleteListener(newOnCompleteListener<String>() {
                    @OverridepublicvoidonComplete(@NonNull Task<String> task) {
                        if (task.isSuccessful()) {

                           token = task.getResult();
                            

                        }
                    }
                });
        
        return token;
    }