Hi,
every now and then my app crashes with the error below. With other error I see a line of code mentioned, which give m e a clue to solve the issue. But not in this case, see errortext below .The users tell me that they 'close a window' to get back to the main/first window.
Does anyone have a clue?
===== Error =====
Date and time=23/04/2021 14:43:33
Message=Attempt to invoke virtual method 'android.graphics.drawable.Drawable android.widget.Button.getBackground()' on a null object reference
Java stack=fr.pcsoft.wdjava.ui.champs.bouton.f.drawableStateChanged(Unknown Source:15)
android.view.View.refreshDrawableState(View.java:24276)
android.view.View.onWindowFocusChanged(View.java:14702)
android.widget.TextView.onWindowFocusChanged(TextView.java:11925)
android.view.View.dispatchWindowFocusChanged(View.java:14658)
android.view.ViewGroup.dispatchWindowFocusChanged(ViewGroup.java:1502)
android.view.ViewGroup.dispatchWindowFocusChanged(ViewGroup.java:1502)
android.view.ViewGroup.dispatchWindowFocusChanged(ViewGroup.java:1502)
android.view.ViewGroup.dispatchWindowFocusChanged(ViewGroup.java:1502)
android.view.ViewRootImpl.handleWindowFocusChanged(ViewRootImpl.java:3479)
android.view.ViewRootImpl.access$1300(ViewRootImpl.java:205)
android.view.ViewRootImpl$ViewRootHandler.handleMessage(ViewRootImpl.java:5385)
android.os.Handler.dispatchMessage(Handler.java:107)
android.os.Looper.loop(Looper.java:237)
android.app.ActivityThread.main(ActivityThread.java:8154)
java.lang.reflect.Method.invoke(Native Method)
com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:496)
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100)
Thread=id=2
name=main
priority=5
groupName=main
Arie