Android Question [SOLVED] Errors with Firebase

[GeoT]

Hi.

I do not know if due to the update of the Firebase Cloud Messaging API or the B4A updates, I get an error when connecting to it. Specifically there is a problem with the SubscribeTopic(topicName As String) method of FirebaseNotifications library.
.

firebasemessaging_subscribetotopics (java line: 184)
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 xerp.xerpchat.firebasemessaging._subscribetotopics(firebasemessaging.java:184)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:186)
    at anywheresoftware.b4a.keywords.Common$11.run(Common.java:1135)
    at android.os.Handler.handleCallback(Handler.java:751)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:154)
    at android.app.ActivityThread.main(ActivityThread.java:6077)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
--------- beginning of crash

I use B4A v7.80 and I have already updated the FirebaseNotifications library to version 1.21.

My intention is to use messaging and notifications.



And also FirebaseAuth fails me.
It shows me

"Object reference not set as an instance of an object".

Thank you.

 

[Erel]

See this similar issue: https://www.b4x.com/android/forum/threads/beginning-of-crash.93837/#post-594007
It was solved by recreating the Firebase app in Firebase console.

Firebase Auth: https://www.b4x.com/android/forum/t...reaks-firebaseauth-library.93446/#post-591424

It is not yet clear whether it is a bug in the latest Firebase updates or there is something that needs to be updated. I'm tracking this issue.

 

[GeoT]

Thanks Erel.

I do not know if it was to recreate the project in Firebase and it took a while to update, or because I substituted the Manifest Editor code that I had for the code of https://www.b4x.com/android/forum/threads/integrating-firebase-services.67692/#content, which now works for me. In my B4A v7.80.


But not another project with the example of FirebaseAuth, that with your modifications, now also shows me an error with the message:

An error has occurred.
Unable to find a part of the path 'C:\Android\extras\b4a_remote\com\google\firebase\firebase-auth\15.1.0\firebase-auth-15.1.0'.

I use the FirebaseAuth v1.02 library.

 

[Erel]

Google Firebase Auth v15.1.0 is available here: https://www.b4x.com/android/forum/t...ith-last-versions-b4a-8-30.93595/#post-592133

 

[GeoT]

Hello Erel.

I followed all the steps but with FirebaseAuth I still show the error:

"Object reference not set as an instance of an object".

 

[Erel]

Can you post the full error message from the logs?

 

[GeoT]

There are no logs. A window opens before with that error message.

 

[Erel]

I see. Does it happen when you add FirebaseAuth library? Does it happen with a new project with only FirebaseAuth referenced?

 

[GeoT]

It is a test project that only works here with FirebaseAuth, but with another code and the same package name, it works with Google Maps.

 

[Erel]

I now remember. There was a bug in v7.80 where errors in the manifest editor caused this error message to appear. Most of the errors are related to mismatch between the Google json file and the pacakge name.

 

[GeoT]

Ok Erel. So I have to install a newer version of B4A and keep working with the Google FirebaseAuth file v15.1.0?

Should Gradle be used? How?

 

[DonManfred]

Should Gradle be used? How?

B4A does not support Gradle. So the answer is no.

 

[Erel]

The instructions are in the link from post #2: https://www.b4x.com/android/forum/t...reaks-firebaseauth-library.93446/#post-591424

 

[GeoT]

Thanks DonManfred and Erel.

The new version of B4A warned me that the package name was misspelled and I corrected it in the Compilation Settings. ^^

And I see that we must continue working for the moment with the file FirebaseAuth v15.1.0.

But when I click on the btnSignIn button, it shows me the error:

main_btnsignin_click (java line: 379)
java.lang.NullPointerException
    at anywheresoftware.b4a.objects.FirebaseAuthWrapper$2.ResultArrived(FirebaseAuthWrapper.java:130)
    at anywheresoftware.b4a.BA.startActivityForResult(BA.java:540)
    at anywheresoftware.b4a.objects.FirebaseAuthWrapper.SignInWithGoogle(FirebaseAuthWrapper.java:141)
    at com.proves.tomkygo.main._btnsignin_click(main.java:379)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:191)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:175)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:171)
    at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
    at android.view.View.performClick(View.java:4439)
    at android.widget.Button.performClick(Button.java:148)
    at android.view.View$PerformClick.run(View.java:18395)
    at android.os.Handler.handleCallback(Handler.java:725)
    at android.os.Handler.dispatchMessage(Handler.java:92)
    at android.os.Looper.loop(Looper.java:176)
    at android.app.ActivityThread.main(ActivityThread.java:5319)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
    at dalvik.system.NativeStart.main(Native Method)

 

[GeoT]

Sub btnSignIn_Click
    auth.SignInWithGoogle
End Sub

 

[Erel]

Can you post the full logs?

Did it previously work?

 

[GeoT]

*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
FirebaseAuth initialized
** Activity (main) Resume **
onAuthStateChanged: com.google.firebase.auth.internal.zzj@424e7198
SignInWithGoogle called
SignInWithGoogle.ResultArrived
main_btnsignin_click (java line: 379)
java.lang.NullPointerException
    at anywheresoftware.b4a.objects.FirebaseAuthWrapper$2.ResultArrived(FirebaseAuthWrapper.java:130)
    at anywheresoftware.b4a.BA.startActivityForResult(BA.java:540)
    at anywheresoftware.b4a.objects.FirebaseAuthWrapper.SignInWithGoogle(FirebaseAuthWrapper.java:141)
    at com.proves.tomkygo.main._btnsignin_click(main.java:379)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:191)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:175)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:171)
    at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
    at android.view.View.performClick(View.java:4439)
    at android.widget.Button.performClick(Button.java:148)
    at android.view.View$PerformClick.run(View.java:18395)
    at android.os.Handler.handleCallback(Handler.java:725)
    at android.os.Handler.dispatchMessage(Handler.java:92)
    at android.os.Looper.loop(Looper.java:176)
    at android.app.ActivityThread.main(ActivityThread.java:5319)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
    at dalvik.system.NativeStart.main(Native Method)
--------- beginning of /dev/log/system

No, FirebaseAuth has never worked for me. It's the first time I've tried it.

 

[Erel]

This is most probably a configuration error on your side. The unfiltered logs may provide more information. I recommend you to create a new Firebase project and start from scratch.

 

[GeoT]

I get it.
Where are the unfiltered logs?

Thank you Erel.

 

[Erel]

There is a Filter checkbox in the Logs tab. Uncheck it.