Custom Dialog with Seekbar Problem

[Flosch]

Hi, I want to create a custom dialog with a seekbar.

If you move the seekbar i want to show the actual value on a label.
I tried it with a ValueChanged sub but this sub is only called if I close the dialog not when the dialog is shown. What's wrong?

Here is the code:

'Activity module
Sub Process_Globals
   'These global variables will be declared once when the application starts.
   'These variables can be accessed from all modules.
End Sub

Sub Globals
   'These global variables will be redeclared each time the activity is created.
   'These variables can only be accessed from this module.

   Dim btnCustom As Button
   Dim lbl1, lbl_Test As Label
   Dim SeekBar1 As SeekBar
   
End Sub

Sub Activity_Create(FirstTime As Boolean)
   Activity.LoadLayout("Layout")
   lbl_Test.Text = ""
   SeekBar1.Initialize("SeekBar1")
End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub

Sub btnCustom_Click
      Dim cd As CustomDialog2
      Dim cd_pnl As Panel 
      cd_pnl.Initialize("cd_pnl")
      'Seekbar
      Dim seek As SeekBar
      seek.Initialize("seek")
      lbl1.Initialize("")
      seek.Max = 100
      seek.Value = 50
      cd_pnl.AddView(seek, 10dip, 45dip, 77%x-20dip, 30dip )
      'Label
      lbl1.Initialize("")
      lbl1.Gravity = Gravity.CENTER 
      lbl1.Text = seek.Value & "%"
      lbl1.TextColor = Colors.LightGray
      lbl1.TextSize = 18
      lbl1.Typeface = Typeface.DEFAULT
      cd_pnl.AddView(lbl1, 10dip,  10dip, 77%x-20dip, 25dip)

      cd.AddView(cd_pnl, 77%x, 90dip)
      ret = cd.Show("Test", "Yes", "No", "Maybe", Null)
End Sub

'Seekbaar Value Changed in Dialog
Sub seek_ValueChanged (Value As Int, UserChanged As Boolean)
      lbl1.Text = Value & "%"
End Sub

'To test it in "normal" view
Sub SeekBar1_ValueChanged (Value As Int, UserChanged As Boolean)
   lbl_Test.Text = Value & "%"
End Sub

Thanks for your help.

 

[mc73]

I've tested your app, and the label of the dialogBox is being changed when you use the seekbar. Perhaps you mean something else?

 

[Flosch]

Ok that is strange.

At my phone the label in the Dialog doesn't change. It will work well in the normal screen. But if the dialog is in front, the label in the dialog (lbl1) dosen't change if you move the seekbar.
While the dialog is shown the (Sub seek_ValueChanged (Value As Int, UserChanged As Boolean)) is not called at all. As soon as the diolog is closed the sub is called multiple times.

For testing I use a Samsung Galaxy S1 (Android 2.3.3)

I dont't know what's wrong!

 

[Erel]

The problem is that the ValueChanged events will not be raised as long as the modal dialog is displayed. You will need to use a non-modal dialog instead.

 

[mc73]

The problem is that the ValueChanged events will not be raised as long as the modal dialog is displayed. You will need to use a non-modal dialog instead.

But why is it working for me, then?

 

[Erel]

Which version of Basic4android are you using? There was a change in v1.92 related to compatibility with Android 4.0.3 which may be related.

 

[mc73]

Which version of Basic4android are you using? There was a change in v1.92 related to compatibility with Android 4.0.3 which may be related.

Still 1.90 and 2.2.2.

 

[Flosch]

I'm using 2.02

So I can't use the Dialog Lib?
Is there a lib or an example for non-modal dialogs?
That would help a lot.

 

[Erel]

You can use the Dialogs library. However you cannot handle events when a modal dialog is displayed.

Non modal dialogs are simpler. Just add the panel to the activity and play with it visible property to show or hide it.

 

[Ricky D]

Erel, I use panels but find views underneath them receive the click. Is there a way to stop this?

Regards, Ricky

 

[mc73]

Erel, I use panels but find views underneath them receive the click. Is there a way to stop this?

Regards, Ricky

one way to do this is to set a flag to true whenever you have this panel active. then you can check inside the events of these views for this flag and avoid their code execution.
if your panel overlays all these views, you can return 'true' from its touch event. this way you will consume clicks.

 

[Erel]

Just add a Panel1_Click sub to your code. The click events will then be handled by the panel and will not pass to other views.

 

[Ricky D]

Thanks I'll put that in place when I get home after work.

Regards, Ricky

 

[Flosch]

I'm a little bit confused and just want to get it right:

I can't use the Dialolg Lib in this particular case bacause it is a modual diaolg.

To get this function I have to write my own Non-Modual Dialog with a seekbar and the Ok / Cancel buttons.

Is that right or is there a way to use the Dialog Lib?

 

[Erel]

You are correct. You will need to use a non-modal dialog (a panel actually) if you want to handle any event while the dialog is visible.

 

[RomansUP]

I have got the same problem with rising event of Seekbar changes but only after I have upgrade version of Basic4Androi from 1.70 to 2.50. Also after this upgrade there is a problem with rising events such as Button_down and Button_up if you use it in CustomDialog. Before in version 1.70 there are not these problems. So now I must change program code to fix these type of problem with such events. :BangHead:

 

[Erel]

The relevant change was in v1.90. Your old code would have crashed on Android 4+ devices in some cases (with the old version).