How to simulate a back key press?

[ztigr]

I know how to capture it, but is there anyway to simulate a user pushing the back key? You guys are great.

Ztigr

 

[margret]

Sub But1_Click  'Simulate backkey press
      Dim KC As Int
      KC = KeyCodes.KEYCODE_BACK
      Activity_KeyPress (KC)
End Sub

 

[Mahares]

You still need the below sub or similar to perform Margret's code snippet. Please correct me if you disagree.

Sub Activity_KeyPress(KeyCode As Int) As Boolean
    Dim Selection As Short
    If KeyCode = KeyCodes.KEYCODE_BACK Then    
       Selection = Msgbox2("Exit application?".ToUpperCase, "C o n f i r m a t i o n", "Yes", "", "No", Null)       
       Select Selection   
              Case DialogResponse.POSITIVE              
                   Activity.Finish                   
              Case DialogResponse.CANCEL, DialogResponse.NEGATIVE 
                   Return True                      
       End Select   
    End If   
End Sub

 

[mc73]

You still need the below sub or similar to perform Margret's code snippet. Please correct me if you disagree.

Sub Activity_KeyPress(KeyCode As Int) As Boolean
    Dim Selection As Short
    If KeyCode = KeyCodes.KEYCODE_BACK Then    
       Selection = Msgbox2("Exit application?".ToUpperCase, "C o n f i r m a t i o n", "Yes", "", "No", Null)       
       Select Selection   
              Case DialogResponse.POSITIVE              
                   Activity.Finish                   
              Case DialogResponse.CANCEL, DialogResponse.NEGATIVE 
                   Return True                      
       End Select   
    End If   
End Sub

In the case of a single activity, this holds true. In the case of returning to a 'previous' activity, perhaps no

 

[margret]

You DON'T need that code to simulate a backkey press. You do need that code to trap the backkey press. He said in his post he knew how to trap it just not simulate it. That is why I only posted the simulate code.

 

[Mahares]

So, what else do you need besides the code snippet you posted as clicking the button returns the following error:
Error description: Undeclared variable 'activity_keypress' is used before it was assigned any value.

 

[mc73]

So, what else do you need besides the code snippet you posted as clicking the button returns the following error:
Error description: Undeclared variable 'activity_keypress' is used before it was assigned any value.

Certainly this error will occur when sub activity_keypress is missing, which, however, will not be the case, when someone traps the event, as already mentioned by the author of this topic

 

[desof]

Sub But1_Click  'Simulate backkey press
      Dim KC As Int
      KC = KeyCodes.KEYCODE_BACK
      Activity_KeyPress (KC)
End Sub

Hello!

sorry for my bad English. I'm doing this and it does not work.
I want you to press the menu button behaves in the same way as pressing the phone button

Sub Activity_Create(FirstTime As Boolean)
Dim ph As Phone
Dim bd As BitmapDrawable
   
Activity.LoadLayout("layout")
ph.SetScreenOrientation (1)   

If FirstTime=True Then 
   Ventana
   GrabaTExto
End If
'''
bd = ph.GetResourceDrawable(17301569)
Activity.AddMenuItem2 ("Acerca de..","Button3", bd.Bitmap)      
bd = ph.GetResourceDrawable(17301560)
Activity.AddMenuItem2("Salir","Button4", bd.Bitmap)   

End Sub

Sub Activity_KeyPress(KeyCode As Int) As Boolean

If KeyCode = KeyCodes.KEYCODE_BACK Then
   
Dim ph As Phone
   Dim bd As BitmapDrawable
   bd = ph.GetResourceDrawable(17301659)
   tmpValue="Desea salir de la aplicación?: "
   result=Msgbox2(tmpValue,"","Aceptar","Cancelar","",bd.Bitmap)

   If result=DialogResponse.POSITIVE Then
       Activity.Finish
   Else
      Return True
   End If
Else If KeyCode = KeyCodes.KEYCODE_MENU Then
   'nothing   
Else
    Return True   ' con esto vuelves al programa, si no pones nada sale de el   
End If

End Sub

Sub bMenu_Click
      Dim KC As Int
      KC = KeyCodes.KEYCODE_MENU
      Activity_KeyPress (KC)      
End Sub

 

[dxxxyyyzzz]

If you want to call the menu by pressing the button, just

Sub bMenu_Click
   Activity.OpenMenu
End Sub

 

[desof]

This is just what I needed!

If you want to call the menu by pressing the button, just

Sub bMenu_Click
   Activity.OpenMenu
End Sub

This is just what I needed!

 

[Olaan]

Hi mc73,

In the case of a single activity, this holds true. In the case of returning to a 'previous' activity, perhaps no

Please to explain your words addition. I'm interested in your words. Could you show me a example?