detecting home and back keys?

[rfresh]

How can I detect when the user presses the home and back keys?

I thought Activity_Pause() would trap it but apparently not.

Thanks...

 

[NJDude]

The HOME key CANNOT be trapped, only the BACK key.

Sub Activity_KeyPress(KeyCode As Int) As Boolean

    If KeyCode = KeyCodes.KEYCODE_BACK Then

       ... Some Code

    End If

End Sub

More info about KeyCodes HERE

 

[klaus]

You can trap the Back key with Activity_KeyPress but you cannot trap the Home key.
Chapter 18.6 in the Beginner's Guide.

Best regards.

 

[rfresh]

Ok thanks.

If you press the Home key, the Activity_Pause() fires yes? (But you can't tell why it fired).

 

[NJDude]

Read about Android Process and activities life cycle

 

[Erel]

If you press the Home key, the Activity_Pause() fires yes? (But you can't tell why it fired).

This is correct. UserClosed will be false which means that the user didn't press on the back button.

 

[Arun]

Activity_Pause not fired when pressing Home

The Activity_Pause event is not getting fired when Home key is pressed.

The Home key just closes the app without any warning.

(This is part of a larger app where it wasn't working, therefore I just put it in a new project)

Sub Activity_KeyPress (KeyCode As Int) As Boolean 'Return True to consume the event
   Dim result As Int
   result = Msgbox2 ("QUIT?",KeyCode & " PRESSED","YES","","NO",Null)
   If result=DialogResponse.POSITIVE Then
      Msgbox ("Entered YES","")
      Return False
   Else
      Msgbox ("Entered NO","")
      Return True
   End If
End Sub

Sub Activity_Pause (UserClosed As Boolean)
'   If UserClosed = True Then
      Msgbox("Activity closed in PAUSE EVENT","")
      ExitApplication
'   End If

End Sub

The attached project contains the above code in ready to run form.

Thanks in advance!

 

[klaus]

MsgBoxes are not allowed in Activity_Pause.
Have a look at this page in the Wiki.
You should use Activity.Finish instead of ExitApplication.

Best regards.

 

[Arun]

Thanks - Problem solved

:signOops: Sorry! My bad!

Actually, I need my app to be persistent and found workarounds for almost all exit options except Home keypress.

I thought, along with android, b4a also ganged up against me in detecting Home keypress. :BangHead:

In all the trial and error, I missed out on the obvious.

Thanks a lot for the prompt reply.