Android Question How do I declare event args in an initialize for button?

[Steve Miller]

I have an array declared as a button. I set the properties of the button in a loop and add them to a view. I need to know which button is pressed. How do I do this?

Here is my code:

Sub declareBtn
    Dim btn(10) As Button
    pnlList.Initialize("")

    For i = 0 To 9
       
        btn(i).Initialize("btn")
        btn(i).Text = "btn" + i
        btn(i).TextColor = Colors.White

        pnlList.AddView(btn(i),10,10 + (i * 50),280,50)
    End If
    Next
end sub   
Sub btn_Click()
    'In here, I need to know which button is pressed.
End Sub

 

[mangojack]

Sub declareBtn

  Dim btn(10) As Button

  For i = 0 To 9

  btn(i).Initialize("btn")
  btn(i).Text = "btn" & i             '!!!  original code btn(i).Text = "btn" + i raised error ....
  btn(i).TextColor = Colors.White
  btn(i).Tag = i                      ' set button number to tag property ..
  pnlList.AddView(btn(i),10,10 + (i * 50),280,50)
  Next

End Sub

Sub btn_Click()

  'Using Sender we find the button that raised this event
  Dim b As Button
  b = Sender

   Log (b.Tag)   'can also use  ... If b.Text = "btn2" Then (and do away with the Tag property)

End Sub

 

[Steve Miller]

Thanks MJ, this worked perfectly!!! Appreciate your help!

 

[giannimaione]

Sub declareBtn

  'Dim btn(10) As Button
Dim btn as Button
  For i = 0 To 9

  btn.Initialize("btn")
  btn.Text = "btn" & i            '!!!  original code btn(i).Text = "btn" + i raised error ....
  btn.TextColor = Colors.White
  btn.Tag = i                      ' set button number to tag property ..
  pnlList.AddView(btn,10,10 + (i * 50),280,50)
  Next

End Sub

Sub btn_Click()

  'Using Sender we find the button that raised this event
  Dim b As Button
  b = Sender

  Log (b.Tag)  'can also use  ... If b.Text = "btn2" Then (and do away with the Tag property)

End Sub

why you use Dim btn(10) ???
is correct my example?

 

[klaus]

No, your example is not correct.
You must Dim the buttons inside the For / Next loop !

Sub declareBtn

  'Dim btn(10) As Button

  For i = 0 To 9
    Dim btn as Button
    btn.Initialize("btn")
    btn.Text = "btn" & i            '!!!  original code btn(i).Text = "btn" + i raised error ....
    btn.TextColor = Colors.White
    btn.Tag = i                      ' set button number to tag property ..
    pnlList.AddView(btn,10,10 + (i * 50),280,50)
  Next

End Sub

The advantage of Dim btn(10) As Button is that you can access each button anywhere in the code like btn(2).Text = "New text".
If you dont need to access any of the buttons in the code your example is simpler.

 

[giannimaione]

sure...

The advantage of Dim btn(10) As Button is that you can access each button anywhere in the code like btn(2).Text = "New text".

like this