main_globals Error!

stefanoa · Mar 10, 2013

suddenly get this error while loading the form activity, I can not figure out why it may depend:

An error has occurred in sub:main_globals (java line: 2358) java.lang.NullPointerException

this is the log:

main_globals (java line: 2358)

java.lang.NullPointerException
at b4a.example.main._globals(main.java:2358)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at b4a.example.main.initializeGlobals(main.java:226)
at b4a.example.main.afterFirstLayout(main.java:86)
at b4a.example.main.access$100(main.java:16)
at b4a.example.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3717)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)
at dalvik.system.NativeStart.main(Native Method)

java.lang.NullPointerException

HELP! :sign0085:

agraham · Mar 10, 2013

With no other information and no code it is impossible to say. If you open the main.java file that you will find in a folder somewhere below Object/src with a line numbering editor like Notepad++ and look for line 2358 it will give you an idea of what the problem is. As it is in Globals it looks like an variable or object initialisation error of some kind.

stefanoa · Mar 10, 2013

thanks for the important suggestion..

the code block is this:

B4X:

   public void onPause() {
      super.onPause();
        if (_activity == null) //workaround for emulator bug (Issue 2423)
            return;
      anywheresoftware.b4a.Msgbox.dismiss(true);
        anywheresoftware.b4a.keywords.Common.Log("** Activity (game) Pause, UserClosed = " + activityBA.activity.isFinishing() + " **");
        processBA.raiseEvent2(_activity, true, "activity_pause", false, activityBA.activity.isFinishing());      
        processBA.setActivityPaused(true);
        mostCurrent = null;
        if (!activityBA.activity.isFinishing())
         previousOne = new WeakReference<Activity>(this);
        anywheresoftware.b4a.Msgbox.isDismissing = false;
   }

the row is:

B4X:

        processBA.raiseEvent2(_activity, true, "activity_pause", false, activityBA.activity.isFinishing());

agraham · Mar 10, 2013

I'm afraid that doesn't look right! The stack trace shows the exception is raised during application startup in your Sub_Globals before calling Activity_Create.

stefanoa · Mar 10, 2013

fixed!
the panel ExtraPanel was used prior to declaration..
it was difficult to find since the error was general and my "sub globals" is very large..
thanks very much for your tips!!!!

B4X:

Sub Globals
......
Dim screenMarginLeft As Int = extraPanel.Left+extraPanel.width
.....
Dim extraPanel As Panel
...
End Sub

fixed with:

B4X:

Sub Globals
......
Dim extraPanel As Panel
Dim screenMarginLeft As Int 
...
End Sub

sub StartGame
....
screenMarginLeft = extraPanel.Left+extraPanel.width
...
end sub

main_globals Error!

stefanoa

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main_globals Error!

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