Android Question java.lang.NullPointerException when executing StateManager.SaveState

[Steve Miller]

My app is a kiosk app (not sure if this makes a difference.)
I have two Activities in my app. When I execute StartActivity(WiFiConnect) to open another activity, the first activity is throwing a NullPointerException when StateManager.SaveState(Activity,"Main") is executed.

Here is the code:

Sub btnWiFiConnect_Click
    StartActivity(WiFiConnect)
End Sub
Sub Activity_Pause (Finishing As Boolean)
   
    Try
        If kiosk Then StartServiceAt(KioskService, DateTime.Now + 1 * DateTime.TicksPerSecond, False)       
        If Finishing Then
            StateManager.ResetState("Main")
        Else
            StateManager.SaveState(Activity, "Main")
        End If
        StateManager.SaveSettings
       
    Catch
        Ex = LastException
        cErrorLog.InsertLog(3,"CustomerTablet.Main.Activity_Pause",Ex.Message)
        If DebugMode Then
            Log(Ex.StackTraceElement(0))
        End If
    End Try
End Sub

Here is the exception thrown:

** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
** Activity (main) Pause, UserClosed = false **

Error occurred on line: 663 (main)
java.lang.NullPointerException


    at b4a.CustomerTablet.main._activity_pause(main.java:1059)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:636)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:305)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:238)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:121)
    at anywheresoftware.b4a.ShellBA$2.run(ShellBA.java:103)
    at android.os.Handler.handleCallback(Handler.java:615)
    at android.os.Handler.dispatchMessage(Handler.java:92)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:4921)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
    at dalvik.system.NativeStart.main(Native Method)

 

[Steve Miller]

Never mind. I found the problem. I'm using a dialog library that I customized with some buttons. When I click the button to show the second activity, I still had the dialog open and it was causing the nullpointerexception. Closing that dialog before loading the second activity fixed the issue...