Android Question Firebase Notification Problem

[Hamied Abou Hulaikah]

I'm using b4a 8.30
I update all necessary things according to:
https://www.b4x.com/android/forum/threads/updates-to-internal-libraries.59340/#post-591400
I'm following this tutorial:
https://www.b4x.com/android/forum/t...s-firebase-cloud-messaging-fcm.67716/#content

In b4a 7.x it working fine, but in b4a 8+ when i call SubscribeToTopic function:

fm.SubscribeToTopic("newstopic")

i get this error:

java.lang.RuntimeException: java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.gms.tasks.Task com.google.firebase.iid.FirebaseInstanceId.zza(java.lang.String)' on a null object reference
    at anywheresoftware.b4a.keywords.Common$13.run(Common.java:1682)
    at android.os.Handler.handleCallback(Handler.java:751)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:154)
    at android.app.ActivityThread.main(ActivityThread.java:6682)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.gms.tasks.Task com.google.firebase.iid.FirebaseInstanceId.zza(java.lang.String)' on a null object reference
    at com.google.firebase.messaging.FirebaseMessaging.subscribeToTopic(Unknown Source)
    at anywheresoftware.b4a.objects.FirebaseNotificationsService$FirebaseMessageWrapper.SubscribeToTopic(FirebaseNotificationsService.java:130)
    at com.yemenet.phonezclub.firebasemessaging$ResumableSub_Service_Start.resume(firebasemessaging.java:236)
    at anywheresoftware.b4a.keywords.Common$13.run(Common.java:1680)
    ... 7 more

How can be solved?

 

[DonManfred]

Did you updated the internal firebase libraries?
Did you update the manifest code to use the new short oneliners?

 

[Alex Guerrero]

Hi, try eliminating the end of line.

fm.SubscribeToTopic(topic.replace("\n", ""))

 

[Hamied Abou Hulaikah]

Did you update the manifest code to use the new short oneliners?

I added this and worked fine ... thank you

CreateResourceFromFile(Macro, FirebaseAnalytics.GooglePlayBase)
CreateResourceFromFile(Macro, FirebaseAnalytics.Firebase)
CreateResourceFromFile(Macro, FirebaseNotifications.FirebaseNotifications)