Android Question Activity_WindowFocusChanged Error

[hanyelmehy]

when use Activity_WindowFocusChanged with SDK 34 i get these error

showexam_activity_windowfocuschanged (java line: 609)
java.lang.NullPointerException: Attempt to read from field 'anywheresoftware.b4a.BA students.one.onlineexam.showexam.activityBA' on a null object reference in method 'java.lang.String students.one.onlineexam.showexam._activity_windowfocuschanged(boolean)'
    at students.one.onlineexam.showexam._activity_windowfocuschanged(showexam.java:609)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:221)
    at students.one.onlineexam.showexam.onWindowFocusChanged(showexam.java:191)
    at androidx.appcompat.view.WindowCallbackWrapper.onWindowFocusChanged(WindowCallbackWrapper.java:125)
    at com.android.internal.policy.DecorView.onWindowFocusChanged(DecorView.java:1789)
    at android.view.View.dispatchWindowFocusChanged(View.java:15277)
    at android.view.ViewGroup.dispatchWindowFocusChanged(ViewGroup.java:1508)
    at android.view.ViewRootImpl.handleWindowFocusChanged(ViewRootImpl.java:3690)
    at android.view.ViewRootImpl.-$$Nest$mhandleWindowFocusChanged(Unknown Source:0)
    at android.view.ViewRootImpl$ViewRootHandler.handleMessageImpl(ViewRootImpl.java:5538)
    at android.view.ViewRootImpl$ViewRootHandler.handleMessage(ViewRootImpl.java:5452)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loopOnce(Looper.java:201)
    at android.os.Looper.loop(Looper.java:288)
    at android.app.ActivityThread.main(ActivityThread.java:7898)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)

 

[DonManfred]

Upload a small project showing the issue.

I dont think anyone can help without knowing what you have done and how.

 

[hanyelmehy]

Upload a small project showing the issue.

I dont think anyone can help without knowing what you have done and how.

i simply use

Sub Activity_WindowFocusChanged (Focused As Boolean)
    Log(Focused)
End Sub

crash happend after change sdk from 33 to 34
when remove above code no crash happens