Android Question How to find the error

J

Jerryk

Active Member
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Longtime User
After uploading my app to Closed testing, I got an error in the Pre_launch report. How can I find out where it is in the code?

B4X: 
Exception android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@18f5719 is not valid; is your activity running?
  at android.view.ViewRootImpl.setView (ViewRootImpl.java:1189)
  at android.view.WindowManagerGlobal.addView (WindowManagerGlobal.java:400)
  at android.view.WindowManagerImpl.addView (WindowManagerImpl.java:139)
  at android.app.Dialog.show (Dialog.java:348)
  at anywheresoftware.b4a.keywords.Common.showAndTrackDialog (Common.java:591)
  at anywheresoftware.b4a.keywords.Common.Msgbox2Async (Common.java:502)
  at anywheresoftware.b4a.objects.B4XViewWrapper$XUI.MsgboxAsync (B4XViewWrapper.java:807)
  at cz.flashcards3000.tools._catcherror (tools.java:44)
  at cz.flashcards3000.b4xmainpage._progresscourse (b4xmainpage.java:1409)
  at cz.flashcards3000.b4xmainpage$ResumableSub_B4XPage_Created.resume (b4xmainpage.java:288)
  at anywheresoftware.b4a.BA.checkAndRunWaitForEvent (BA.java:275)
  at anywheresoftware.b4a.BA.raiseEvent2 (BA.java:215)
  at anywheresoftware.b4a.keywords.Common$12.run (Common.java:1212)
  at android.os.Handler.handleCallback (Handler.java:938)
  at android.os.Handler.dispatchMessage (Handler.java:99)
  at android.os.Looper.loopOnce (Looper.java:201)
  at android.os.Looper.loop (Looper.java:288)
  at android.app.ActivityThread.main (ActivityThread.java:7870)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:548)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1003)
 
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MicroDrie

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What always works without having any idea what and how you want to achieve: Just put some log(1), log(2), log(n) statements in your code and see at which number the logging stops. Then put a break after that in your code and follow the execution step by step until the error .
 
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J

Jerryk

Active Member
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Longtime User
To be clear - I don't get any errors when running the app. The above error is shown in Google Play Console after uploading the app. I don't know how it works exactly, but Google probably tests the app on virtual devices and then shows the results in Testing > Pre-launch report. And this is where I got some errors from this testing.
 
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agraham

Expert
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Longtime User
From the stack trace it looks like your code is trying, and failing for some reason, to display a Msgbox2Async during your B4XMainPage creation. It is possibly a timing problem The key may be this
"is your activity running?"
Your main page activity may not be running at this time and so cannot show a dialog.
 
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