What is FCM token in Firebase

Question

In the new Firebase  under Notification  they have mentioned that developer can send notification to a particular device  For that  in console it asks for an FCM token  What is it exactly and how can I get that token

User · Answer

FirebaseInstanceIdService is now deprecated  you should get the Token in the onNewToken method in the FirebaseMessagingService   Check out the docs

User · Answer

They deprecated getToken   method in the below release notes  Instead  we have to use getInstanceId   https   firebase google com docs reference android com google firebase iid FirebaseInstanceId  Task lt InstanceIdResult gt  task   FirebaseInstanceId getInstance   getInstanceId    task addOnSuccessListener new OnSuccessListener lt InstanceIdResult gt             Override       public void onSuccess InstanceIdResult authResult                 Task completed successfully                            String fcmToken   authResult getToken                 task addOnFailureListener new OnFailureListener      Override public void onFailure  NonNull Exception e           Task failed with an exception                    To handle success and failure in the same listener  attach an OnCompleteListener   task addOnCompleteListener new OnCompleteListener lt InstanceIdResult gt       Override public void onComplete  NonNull Task lt InstanceIdResult gt  task        if  task isSuccessful                 Task completed successfully         InstanceIdResult authResult   task getResult            String fcmToken   authResult getToken          else              Task failed with an exception         Exception exception   task getException                  Also  the FirebaseInstanceIdService Class is deprecated and they came up with onNewToken method in FireBaseMessagingService as replacement for onTokenRefresh   you can refer to the release notes here  https   firebase google com support release-notes android   Override public void onNewToken String s        super onNewToken s       Use this code logic to send the info to your server        sendRegistrationToServer s

User · Answer

What is it exactly   An FCM Token  or much commonly known as a registrationToken like in google-cloud-messaging  As described in the GCM FCM docs      An ID issued by the GCM connection servers to the client app that allows it to receive messages  Note that registration tokens must be kept secret      How can I get that token   Update  The token can still be retrieved by calling getToken    however  as per FCM s latest version  the FirebaseInstanceIdService onTokenRefresh   has been replaced with FirebaseMessagingService onNewToken   -- which in my experience functions the same way as onTokenRefresh   did     Old answer   As per the FCM docs      On initial startup of your app  the FCM SDK generates a registration token for the client app instance  If you want to target single devices or create device groups  you ll need to access this token       You can access the token s value by extending FirebaseInstanceIdService  Make sure you have added the service to your manifest  then call getToken in the context of onTokenRefresh  and log the value as shown    Override public void onTokenRefresh            Get updated InstanceID token      String refreshedToken   FirebaseInstanceId getInstance   getToken        Log d TAG   Refreshed token      refreshedToken           TODO  Implement this method to send any registration to your app s servers      sendRegistrationToServer refreshedToken           The onTokenRefreshcallback fires whenever a new token is generated  so calling getToken in its context ensures that you are accessing a current  available registration token  FirebaseInstanceID getToken   returns null if the token has not yet been generated       After you ve obtained the token  you can send it to your app server and store it using your preferred method  See the Instance ID API reference for full detail on the API

User · Answer

I have an update about  Firebase Cloud Messaging token  which I could get an information   I really wanted to know about that change so just sent a mail to Support team  The Firebase Cloud Messaging token will get back to Server key soon again  There will be nothing to change  We can see Server key again after soon

User · Answer

Here is simple steps add this gradle   dependencies     compile  com google firebase firebase-messaging 9 0 0      No extra permission are needed in manifest like GCM  No receiver is needed to manifest like GCM  With FCM  com google android gms gcm GcmReceiver is added automatically   Migrate your listener service  A service extending InstanceIDListenerService is now required only if you want to access the FCM token   This is needed if you want to   Manage device tokens to send a messages to single device directly  or Send messages to device group  or Send messages to device group  or Subscribe devices to topics with the server subscription management API    Add Service in manifest   lt service     android name   MyInstanceIDListenerService  gt       lt intent-filter gt           lt action android name  com google firebase INSTANCE ID EVENT    gt       lt  intent-filter gt   lt  service gt    lt service     android name   MyFirebaseInstanceIDService  gt       lt intent-filter gt           lt action android name  com google firebase INSTANCE ID EVENT   gt       lt  intent-filter gt   lt  service gt    Change MyInstanceIDListenerService to extend FirebaseInstanceIdService  and update code to listen for token updates and get the token whenever a new token is generated   public class MyInstanceIDListenerService extends FirebaseInstanceIdService                      Called if InstanceID token is updated  This may occur if the security of      the previous token had been compromised  Note that this is also called      when the InstanceID token is initially generated  so this is where      you retrieve the token              START refresh token     Override   public void onTokenRefresh              Get updated InstanceID token        String refreshedToken   FirebaseInstanceId getInstance   getToken          Log d TAG   Refreshed token      refreshedToken            TODO  Implement this method to send any registration to your app s servers        sendRegistrationToServer refreshedToken            For more information visit    How to import former GCM Projects into Firebase How to force a token refresh How to access the token How to set up firebase

[android] What is FCM token in Firebase?

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