Android Question [SOLVED] Errors with Firebase

GeoT · Jun 8, 2018

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.
.

B4X:

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

B4X:

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

Thank you.

Erel · Jun 10, 2018

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 · Jun 10, 2018

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:

B4X:

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 · Jun 11, 2018

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 · Jun 11, 2018

Hello Erel.

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

B4X:

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

Erel · Jun 12, 2018

Can you post the full error message from the logs?

GeoT · Jun 14, 2018

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

Erel · Jun 14, 2018

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

GeoT · Jun 14, 2018

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 · Jun 14, 2018

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 · Jun 14, 2018

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 · Jun 14, 2018

GeoT said:
Should Gradle be used? How?

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

Erel · Jun 14, 2018

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

GeoT · Jun 14, 2018

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:

B4X:

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 · Jun 14, 2018

B4X:

Sub btnSignIn_Click
    auth.SignInWithGoogle
End Sub

Erel · Jun 15, 2018

Can you post the full logs?

Did it previously work?

GeoT · Jun 16, 2018

B4X:

*** 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 · Jun 17, 2018

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 · Jun 17, 2018

I get it.
Where are the unfiltered logs?

Thank you Erel.

Erel · Jun 18, 2018

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

Android Question [SOLVED] Errors with Firebase

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