Android Question NullPointerException Error

[david7374]

Why does this error occur?

Error in this line:

Drawer.CenterPanel.AddView(Content11,0,0,100%x,100%y) 'Dim Drawer As B4XDrawer

Exception java.lang.NullPointerException: Attempt to invoke virtual method 'void anywheresoftware.b4a.objects.PanelWrapper.AddView(android.view.View, int, int, int, int)' on a null object reference
  at com.tos.ssite.menu._activity_create (menu.java:547)
  at java.lang.reflect.Method.invoke
  at anywheresoftware.b4a.BA.raiseEvent2 (BA.java:221)
  at com.tos.ssite.menu.afterFirstLayout (menu.java:105)
  at com.tos.ssite.menu.access$000 (menu.java:17)
  at com.tos.ssite.menu$WaitForLayout.run (menu.java:83)
  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:7880)
  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:1009)

 

[walt61]

Either Drawer or Content11 wasn't initialised.

 

[david7374]

Either Drawer or Content11 wasn't initialised.

No,
Content11 IsInitialized

Content11.Initialize("")

 

[walt61]

What do you get when you add these two lines before the one that throws the exception?

Log(Drawer.IsInitialized)
Log(Content11.IsInitialized)

 

[david7374]

What do you get when you add these two lines before the one that throws the exception?

Log(Drawer.IsInitialized)
Log(Content11.IsInitialized)

true
true

 

[Erel]

Create a small project with the relevant code and upload it.