Android Question Error in console for Firebase

pliroforikos · Jan 24, 2023

Hello, I'm receiving 3 errors in google console. I think its about firebase messaging and as google say it happens in Android 11 in
samsung a32x and samsung a50 phones.
Please can you explain what happened?
I already updated the app with new instructions about firebase and compiled with 12.20

java.lang.RuntimeException

Exception java.lang.RuntimeException:
at anywheresoftware.b4a.BA.raiseEvent2 (BA.java:258)
at anywheresoftware.b4a.BA$1.run (BA.java:360)
at android.os.Handler.handleCallback (Handler.java:938)
at android.os.Handler.dispatchMessage (Handler.java:99)
at android.os.Looper.loop (Looper.java:246)
at android.app.ActivityThread.main (ActivityThread.java:8653)
at java.lang.reflect.Method.invoke
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:602)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1130)
Caused by java.lang.ClassCastException:
at b4a.myClass.b4xpages._getmanager (b4xpages.java:57)
at b4a.myClass.b4xpages._mainpage (b4xpages.java:101)
at b4a.myClass.firebasemessaging._fm_messagearrived (firebasemessaging.java:80)
at java.lang.reflect.Method.invoke
at anywheresoftware.b4a.BA.raiseEvent2 (BA.java:221)

java.lang.ClassCastException

Exception java.lang.ClassCastException:
at b4a.myClass.b4xpages._getmanager (b4xpages.java:56)
at b4a.myClass.b4xpages._mainpage (b4xpages.java:100)
at b4a.myClass.firebasemessaging._fm_messagearrived (firebasemessaging.java:160)
at java.lang.reflect.Method.invoke
at anywheresoftware.b4a.BA.raiseEvent2 (BA.java:213)
at anywheresoftware.b4a.BA$1.run (BA.java:352)
at android.os.Handler.handleCallback (Handler.java:938)
at android.os.Handler.dispatchMessage (Handler.java:99)
at android.os.Looper.loop (Looper.java:246)
at android.app.ActivityThread.main (ActivityThread.java:8595)
at java.lang.reflect.Method.invoke
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:602)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1130)

java.lang.RuntimeException

Exception java.lang.RuntimeException:
at anywheresoftware.b4a.BA.raiseEvent2 (BA.java:258)
at anywheresoftware.b4a.BA$1.run (BA.java:360)
at android.os.Handler.handleCallback (Handler.java:938)
at android.os.Handler.dispatchMessage (Handler.java:99)
at android.os.Looper.loop (Looper.java:246)
at android.app.ActivityThread.main (ActivityThread.java:8595)
at java.lang.reflect.Method.invoke
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:602)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1130)
Caused by java.lang.ClassCastException:
at b4a.myClass.b4xpages._getmanager (b4xpages.java:57)
at b4a.myClass.b4xpages._mainpage (b4xpages.java:101)
at b4a.myClass.firebasemessaging._fm_messagearrived (firebasemessaging.java:80)
at java.lang.reflect.Method.invoke
at anywheresoftware.b4a.BA.raiseEvent2 (BA.java:221)

DonManfred · Jan 24, 2023

pliroforikos said:
I already updated the app with new instructions about firebase and compiled with 12.20

And you replaced firebasemessaging service with the new firebasemessaging receiver?

See updated tutorial:

FirebaseNotifications - Push messages / Firebase Cloud Messaging (FCM)

Updated tutorial: https://www.b4x.com/android/forum/threads/b4x-firebase-push-notifications-2023.148715/ Clarification: The nice thing about FCM is that your app doesn't need to run in order to receive messages. The FirebaseMessaging receiver will be started by the OS when a new message...

www.b4x.com

pliroforikos · Jan 24, 2023

Yes i did.

pliroforikos · Jan 24, 2023

This is the code in receiver module.

B4X:

Sub Process_Globals
    Public fm As FirebaseMessaging
    Public msgs As Int
End Sub

Private Sub Receiver_Receive (FirstTime As Boolean, StartingIntent As Intent)
    If FirstTime Then
        fm.Initialize("fm")
        msgs  = 0
    End If
    fm.HandleIntent(StartingIntent)
End Sub

Public Sub SubscribeToTopics
    fm.SubscribeToTopic("myclass")
End Sub

Sub fm_MessageArrived (Message As RemoteMessage)
    Log("Message arrived")
    Log($"Message data: ${Message.GetData}"$)
    msgs = msgs + 1
    Dim n2 As Notification
    n2.Initialize2(n2.IMPORTANCE_DEFAULT)
    n2.Icon = "icon"
    n2.AutoCancel = True
    n2.SetInfo(Message.GetData.Get("title"), Message.GetData.Get("body"), Main)
    n2.Notify(msgs)
    B4XPages.MainPage.showBadge(msgs)
End Sub

Sub fm_TokenRefresh (Token As String)
    Log("TokenRefresh: " & Token)
End Sub

Erel · Jan 25, 2023

There is a mistake in your code. Don't assume that B4XPages was created at this point. In most cases it will not be created as the process has just started.

Move the showBadge sub to its own class and make an instance of this class in the receiver module and in the main page.

pliroforikos · Jan 25, 2023

Unfortunately, badge exists in main screen. So is it possible to move it in a class?

Erel · Jan 26, 2023

Should be, assuming that it doesn't need an activity context.

Android Question Error in console for Firebase

pliroforikos

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FirebaseNotifications - Push messages / Firebase Cloud Messaging (FCM)

pliroforikos

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