Android Question Capturing Bluetooth Remote Media Keys

[woodpecker]

I am trying to use the media keys on a bluetooth audio receiver to control my app using the reflection library and ACTION_UP.

I can capture media_next and media_previous fine, I can capture the play / pause button by using its key code of 126 but not using KeyCodes.KEYCODE_MEDIA_PLAY_PAUSE, not sure why?

I cannot seem to capture anything from volume up and volume down, they just control the phone volume, how can I capture these?

Also I would like to control the app when the screen goes off, is that possible, here is my key test code:-

Sub Activity_Create(FirstTime As Boolean)
    re.Target = Activity
    re.SetOnKeyListener("ActivityOnKey")
    re.RunMethod2("setFocusable", "True",  "java.lang.boolean")
    re.RunMethod2("setFocusableInTouchMode", "True", "java.lang.boolean")
    Activity.RequestFocus
End Sub

Private Sub ActivityOnKey(vTag As Object, keyCode As Int, KeyEvent As Object) As Boolean
    re.Target = KeyEvent
    Dim Action As Int = re.RunMethod("getAction")


    Select Action
        Case Activity.ACTION_DOWN
            Select keyCode
                Case KeyCodes.KEYCODE_MEDIA_PREVIOUS
                    'MsgboxAsync(keyCode,"MEDIA PREVIOUS DOWN")
                    Return(True) 'to cancel the event
                Case KeyCodes.KEYCODE_MEDIA_NEXT
                    'MsgboxAsync(keyCode,"MEDIA NEXT DOWN")
                    Return(True) 'to cancel the event
                Case KeyCodes.KEYCODE_MEDIA_PLAY_PAUSE
                    'MsgboxAsync(keyCode,"MEDIA PLAY / PAUSE DOWN")
                    Return(True) 'to cancel the event
                Case KeyCodes.KEYCODE_VOLUME_UP
                    'MsgboxAsync(keyCode,"VOLUME UP down")
                    Return(True) 'to cancel the event
                Case KeyCodes.KEYCODE_VOLUME_DOWN
                    'MsgboxAsync(keyCode,"VOLUME DOWN down")
                    Return(True) 'to cancel the event
            End Select
        Case Activity.ACTION_UP
            ToastMessageShow(keyCode & KeyEvent,True)
            Select keyCode
                Case KeyCodes.KEYCODE_MEDIA_PREVIOUS
                    MsgboxAsync(keyCode,"MEDIA PREVIOUS")
                    Return(True) 'to cancel the event
                Case KeyCodes.KEYCODE_MEDIA_NEXT
                    MsgboxAsync(keyCode,"MEDIA NEXT")
                    Return(True) 'to cancel the event
                Case 126
                'Case KeyCodes.KEYCODE_MEDIA_PLAY_PAUSE 'DOESN'T WORK!
                    MsgboxAsync(keyCode,"MEDIA PLAY / PAUSE")
                    Return(True) 'to cancel the event
                Case KeyCodes.KEYCODE_VOLUME_UP
                    MsgboxAsync(keyCode,"VOLUME UP up")
                    Return(True) 'to cancel the event
                Case KeyCodes.KEYCODE_VOLUME_DOWN
                    MsgboxAsync(keyCode,"VOLUME DOWN up")
                    Return(True) 'to cancel the event
            End Select
    End Select
    Return False
End Sub

 

[Erel]

This code is raised when the volume keys are pressed.

Sub Activity_KeyUp (KeyCode As Int) As Boolean
   Log(KeyCode)
   If KeyCode = KeyCodes.KEYCODE_VOLUME_DOWN Or KeyCode = KeyCodes.KEYCODE_VOLUME_UP Then
       Return True
   End If
   Return False
End Sub

While it should also consumes the key event, the volume is still changing on Android 8.

 

[woodpecker]

Hi Erel,

This seems to only work with the volume keys on the phone, it doesn't recognise a keyup on the bluetooth volume keys?