Android Question Not selected spinner

Private Spinner1 As Spinner

spinner1.add("firstitem")
spinner1.add("seconditem")

Sub Activity_Create(FirstTime As Boolean)
  Dim sp As Spinner
   sp.Initialize("sp")   
   sp.DropdownTextColor = Colors.White                   '<--- Define whichever you want according to app theme
   sp.DropdownBackgroundColor = Colors.Blue
   sp.TextColor = sp.DropdownBackgroundColor          '<--- Assign same color for text and background
   sp.Color = sp.DropdownBackgroundColor
   sp.AddAll(Array As String("one","two","three"))   
   sp.Tag =True                                           '<---- will mark it as "empty"   
   Activity.AddView(sp,20dip,50%Y,120dip,40dip)

End Sub

Sub  sp_ItemClick (Position As Int, Value As Object)
 
  Dim sp As Spinner = Sender
   Dim empty As Boolean = sp.tag
   If empty Then                 'Will only need it the first time
     sp.TextColor = sp.DropdownTextColor
     sp.Clear                       'Clear and re-populate the spinner. This is the only way to force redraw everything. Invalidate would also work but needs an additional click
     sp.AddAll(Array As String("one","two","three"))
     sp.Tag=False
   End If
    
   '...process the event normally
End Sub