B4J Question TreeView Method: getItem not found

[Robert Valentino]

Every time I click on the Horz ScrollBar (the blank area between arrows)
(RuntimeException) java.lang.RuntimeException: Method: getItem not found in: javafx.scene.layout.StackPane

If I click on the Arrows I get
(RuntimeException) java.lang.RuntimeException: Method: getItem not found in: javafx.scene.layout.Region

The Scroll Box scrolls - Do I / Am I suppose to handle these routines? If so how?

 

[Erel]

It sounds like something in your code.

 

[Robert Valentino]

You are right.

It is the GetItem from this routine: https://www.b4x.com/android/forum/threads/mouse-click-on-imageview-in-tableview.86341/#post-546793
For when you click on an image

Thanks forgot this was buried in my code.

 

[Robert Valentino]

Dim nw As JavaObject = PickResult.RunMethod("getIntersectedNode", Null)

getIntersectedNode seems to return a different nw type for clicking on a column then for clicking on a scroll bar.

Is there a way to determine what is being returned?

 

[Robert Valentino]

The only way I could figure to make the routine from this page (https://www.b4x.com/android/forum/threads/mouse-click-on-imageview-in-tableview.86341/#post-546793) work properly was this

Sub TableView_Filter(e As Event)
   Try
     Dim jo As JavaObject = e
     Dim PickResult As JavaObject = jo.RunMethod("getPickResult", Null)

     Dim toString    As String = PickResult.RunMethod("toString", Null)

     '---------------------------------------------------------------------------------
     '  If NOT a  TableColumn then probably something like a scrollbar 
     '---------------------------------------------------------------------------------                   
     If  toString.Contains("TableColumn")  =  false Then return

     If PickResult.IsInitialized Then
       Dim nw As JavaObject = PickResult.RunMethod("getIntersectedNode", Null)
       If nw.IsInitialized Then
         '-------------------------------------------------------------------------------
         '  Without the toString check for TableColumn above this routine 
         '              getItem below crashes when clicking on the scrollbars
         '-------------------------------------------------------------------------------
         Dim item As Object = nw.RunMethod("getItem", Null)

         If item Is ImageView Then
           Dim iv As ImageView = item
           'your image view is here.
           Log("Found: " & iv)
           e.Consume
         End If
       End If
     End If
   Catch
     Log(LastException)
   End Try
End Sub