Android Question Key Down Event?

[yudinvs]

Hi all

Please help
I use software triggers to control Zebra Barcode Reader.

i try to use Key_Down|Key_UP

Private Sub Activity_KeyUp (KeyCode As Int) As Boolean
   
   
    Return False
   
End Sub

it works, but then key press,.

Now i need to turn it off on scan key Released, but no event raised

Private Sub Activity_KeyDown (KeyCode As Int) As Boolean
   
    Return False
End Sub

But Key Up Raises at key press, not release

Key_Down not Raises.

How to catch key down and key up events?

 

[ilan]

i am not sure it is possible on android but maybe try using keycodes?

Sub Activity_KeyPress (KeyCode As Int) As Boolean 'Return True to consume the event
    'Return True
    Select KeyCode
        Case KeyCodes.KEYCODE_DPAD_DOWN
            
        Case KeyCodes.KEYCODE_DPAD_UP
            
    End Select
End Sub

https://developer.android.com/reference/android/view/KeyEvent#KEYCODE_DPAD_DOWN

 

[yudinvs]

i am not sure it is possible on android but maybe try using keycodes?

Sub Activity_KeyPress (KeyCode As Int) As Boolean 'Return True to consume the event
    'Return True
    Select KeyCode
        Case KeyCodes.KEYCODE_DPAD_DOWN
          
        Case KeyCodes.KEYCODE_DPAD_UP
          
    End Select
End Sub

https://developer.android.com/reference/android/view/KeyEvent#KEYCODE_DPAD_DOWN

Sorry for my poor english, perhaps I wrote it wrong.

I need to get evet at Key press and Key Release.

At key press i want to turn barcode reader on, on Key Release turn off. Key code is same, but different events.

 

[yudinvs]

My terminal has physical keyboard, physical scan key. Built in application ScanDemo or DataWedge can control reader on|off at key press/ key release

 

[ilan]

it looks like there is a key_down key_up event in android.

https://developer.android.com/reference/android/view/KeyEvent

i think you need to use java object for this.
ACTION_DOWN and ACTION_UP


see also this:

How to make KeyDown and KeyUp on android device?

I have a question. I'm making Keystroke dynamics app on android devices. For now, I make an Activity with measure string and EditText. I want to catch KeyDown and KeyUp events on software keyboa...

stackoverflow.com

 

[yudinvs]

thanx, but it's java, not b4x, to hard for me. i'm newborn in android. I'll try to figure it out, thanx again.