Android Question KeyValueStore GetObject returns Null

[jhagerup]

'Class module myClass
Sub Class_Globals
    Dim mVar As String   
End Sub

Public Sub Initialize
    mVar = "testing"
End Sub

public Sub getVar As String
    Return mVar
End Sub


Sub Activity_Create(FirstTime As Boolean)
    kvs.Initialize(File.DirDefaultExternal,"test")
    Dim myObject As myClass
    myObject.Initialize
    Log (myObject.Var)
    kvs.PutObject("1", myObject)
    Log(kvs.ContainsKey("1"))
    Dim myObject2 As myClass
    myObject2 = kvs.GetObject("1")
    Log(myObject2.Var)
End Sub

Log:
** Activity (main) Create, isFirst = true **
testing
true
Error occurred on line: 38 (KeyValueStore)
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String b4a.example.myclass._getvar(b4a.example.myclass)' on a null object reference
at b4a.example.main._activity_create(main.java:375)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
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.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:121)
at b4a.example.main.afterFirstLayout(main.java:100)
at b4a.example.main.access$100(main.java:17)
at b4a.example.main$WaitForLayout.run(main.java:78)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:155)
at android.app.ActivityThread.main(ActivityThread.java:5696)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
** Activity (main) Resume **


Works perfectly in B4i !

Any suggestions ?

 

[Erel]

Can you create a small project with this code and upload it?

 

[jhagerup]

Yes, here it is.

 

[Erel]

It is very simple. You cannot store class instances with KVS.

Supports types: Lists, Arrays, Maps, Strings, primitive types and user defined types.

 

[jhagerup]

Thanks.
I'm developing in B4i and B4A simultaneously and as it worked in B4i I thougt that it would work in B4A too ;-(