Android Question Problem with double registration of the DDD class.

[Jerryk]

I have a problem with double registration of the DDD class.
I register it on the main page and use it.

Private Sub B4XPage_Created (Root1 As B4XView)
    dd.Initialize
    xui.RegisterDesignerClass(dd)
   
    Root = Root1
    Root.LoadLayout("MainPage")
    
    Dim pnl1 As Panel = myView1.AddLayout("L1", 10dip, 10dip, xui.Color_Cyan)     '<----- create and get panel from customview
    pnl1.Color = xui.Color_Green
    
    dd.GetViewByName(Root,"Button1").Text = "myButton"       '<----- OK
    dd.GetViewByName(pnl1, "Label1").Text = "Title1"                 '<----- get error
End Sub

The problem is that the second page is an independent customview, so it should have its own registration, where I need the DDD class. If I register DDD in the customview module, and then call in main page:

dd.GetViewByName(pnl1, "Label1").Text = "Title1"

an error appears:

Error occurred on line: 256 (DDD)
java.lang.reflect.InvocationTargetException
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.keywords.Common.CallSubDebug2(Common.java:1140)
    at b4a.example.b4xpagesmanager._createpageifneeded(b4xpagesmanager.java:1068)
    at b4a.example.b4xpagesmanager._showpage(b4xpagesmanager.java:425)
    at b4a.example.b4xpagesmanager._addpage(b4xpagesmanager.java:245)
    at b4a.example.b4xpagesmanager._addpageandcreate(b4xpagesmanager.java:259)
    at b4a.example.b4xpagesmanager._initialize(b4xpagesmanager.java:165)
    at b4a.example.main._activity_create(main.java:415)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:157)
    at b4a.example.main.afterFirstLayout(main.java:105)
    at b4a.example.main.access$000(main.java:17)
    at b4a.example.main$WaitForLayout.run(main.java:83)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:223)
    at android.app.ActivityThread.main(ActivityThread.java:7825)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
    at anywheresoftware.b4a.debug.Debug.CallSub4(Debug.java:336)
    at anywheresoftware.b4a.debug.Debug.CallSubNew2(Debug.java:285)
    ... 24 more
Caused by: java.lang.reflect.InvocationTargetException
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.debug.Debug.CallSub4(Debug.java:318)
    ... 25 more
Caused by: java.lang.RuntimeException: Object should first be initialized (B4XView).
    at anywheresoftware.b4a.AbsObjectWrapper.getObject(AbsObjectWrapper.java:67)
    at anywheresoftware.b4a.objects.B4XViewWrapper.asLabelWrapper(B4XViewWrapper.java:213)
    at anywheresoftware.b4a.objects.B4XViewWrapper.setText(B4XViewWrapper.java:229)
    at b4a.example.b4xmainpage._b4xpage_created(b4xmainpage.java:77)
    ... 27 more
** Activity (main) Resume **

Is there any solution?

 

[Erel]

Only a single class instance (per class) can be registered.

Your best option is to make it a requirement to have a registered public 'dd' in the main page. I think that it is a reasonable requirement.

'in your class
dd = B4XPage.MainPage.dd