Android Question Firebase Authentication

[Marcos Alves]

Hello all,

I'm trying to implement Firebase Authentication using this thread : https://www.b4x.com/android/forum/t...seauth-to-support-facebook.67954/#post-430482

But when the test app is starting I'm getting the error:

*** Service (starter) Create ***
Error occurred on line: 13 (Starter)
java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.firebase.auth.FirebaseAuth.addAuthStateListener(com.google.firebase.auth.FirebaseAuth$AuthStateListener)' on a null object reference
    at anywheresoftware.b4a.objects.FirebaseAuthWrapper.Initialize(FirebaseAuthWrapper.java:73)
    at b4a.comten.firebase.starter._service_create(starter.java:175)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:348)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:193)
    at b4a.comten.firebase.starter.onCreate(starter.java:56)
    at android.app.ActivityThread.handleCreateService(ActivityThread.java:3749)
    at android.app.ActivityThread.access$1400(ActivityThread.java:213)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1826)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6923)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:870)
** Service (starter) Start **

"line 38" is the same of sample code (no changes), in starter service:

Sub Service_Create
    
    auth.Initialize("auth")  <--- Line 38
    facebook.Initialize

End Sub

It's all configured in Firebase and Google/Facebook. Does anybody know what could be happening?

Thanks !

 

[f0raster0]

have you checked this:

Firebase Authentication Sample - Error on auth.Initialize("auth") statement

Hi All, I am trying to run Erel's Firebase Authentication Sample Program, I already update command line tools and resources as Erel indicates, I am on B4A 10.0 and using SDK 26, also I registered app in firebase console and got the json file (put with b4a. program). Howerer al Program start I...

www.b4x.com

or this

FireaseAuth-NullPointerException on Initialize(B4A: 10.2)

I heve been trying to use FirebaseAuth library When compile I have this error: *** Service (starter) Create *** ** Service (starter) Start ** ** Activity (main) Create, isFirst = true ** Error occurred on line: 25 (Main) java.lang.NullPointerException: Attempt to invoke virtual method 'void...

www.b4x.com

or this

FirebasAuth error message

Even after I updated the SDK and copied al the files I found to the libraries, I keep getting the sam error when running the FirebasAuth sample app: *** Service (starter) Create *** ** Service (starter) Start ** ** Activity (main) Create, isFirst = true ** Error occurred on line: 25 (Main)...

www.b4x.com

 

[Marcos Alves]

have you checked this:

Firebase Authentication Sample - Error on auth.Initialize("auth") statement

Hi All, I am trying to run Erel's Firebase Authentication Sample Program, I already update command line tools and resources as Erel indicates, I am on B4A 10.0 and using SDK 26, also I registered app in firebase console and got the json file (put with b4a. program). Howerer al Program start I...

www.b4x.com

or this

FireaseAuth-NullPointerException on Initialize(B4A: 10.2)

I heve been trying to use FirebaseAuth library When compile I have this error: *** Service (starter) Create *** ** Service (starter) Start ** ** Activity (main) Create, isFirst = true ** Error occurred on line: 25 (Main) java.lang.NullPointerException: Attempt to invoke virtual method 'void...

www.b4x.com

or this

FirebasAuth error message

Even after I updated the SDK and copied al the files I found to the libraries, I keep getting the sam error when running the FirebasAuth sample app: *** Service (starter) Create *** ** Service (starter) Start ** ** Activity (main) Create, isFirst = true ** Error occurred on line: 25 (Main)...

www.b4x.com

Thanks @f0raster0 ... I found what happened . Basically, the sample app was without the Firebase manifest lines . After to add these lines the app ran without any problem.
I hope that this tip could help other developers to avoid to do the same mistake.

Thanks ? !!! ?