Android Question B4A-Page & error NativeMe.RunMethod("playTone", Null)

[Pesciolina]

I migrated the app with the camera reader to B4a Page and the PlayTone function no longer works, what does it depend on?

Sub Class_Globals
    Private NativeMe As JavaObject
End Sub

Private Sub FoundBarcode (msg As String)

    EditTextNumero.Text = msg

    NativeMe.RunMethod("playTone", Null)
    Dim tim As Long = 100
    NativeMe.RunMethod("vibrateOnce", Array(tim))
    
End Sub

Logger connesso a:  wheatek WP36
--------- beginning of main
Error occurred on line: 559 (B4XMainPage)
java.lang.RuntimeException: Method: playTone not found in: b4a.SendBiB.main
    at anywheresoftware.b4j.object.JavaObject$MethodCache.getMethod(JavaObject.java:363)
    at anywheresoftware.b4j.object.JavaObject.RunMethod(JavaObject.java:120)
    at b4a.SendBiB.b4xmainpage._foundbarcode(b4xmainpage.java:830)
    at b4a.SendBiB.b4xmainpage._camera1_preview(b4xmainpage.java:810)
    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:351)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:157)
    at anywheresoftware.b4a.keywords.Common.CallSub4(Common.java:1114)
    at anywheresoftware.b4a.keywords.Common.CallSubNew2(Common.java:1069)
    at b4a.SendBiB.cameraexclass._camera_preview(cameraexclass.java:387)
    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:351)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:157)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:201)
    at anywheresoftware.b4a.objects.CameraW$2$1$1.onPreviewFrame(CameraW.java:147)
    at android.hardware.Camera$EventHandler.handleMessage(Camera.java:1238)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loopOnce(Looper.java:201)
    at android.os.Looper.loop(Looper.java:288)
    at android.app.ActivityThread.main(ActivityThread.java:7937)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:569)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1019)

 

[teddybear]

What is the NativeMe‘s reference? which app are you migrating?

 

[DonManfred]

what does it depend on?

on the inlinejava from the example your copied your code from.

Check the examples inline jaja-code

 

[Pesciolina]

Thanks for opening my eyes.
I had put the Java code in the MainPage page and not under Main.

Happy New Year 2025