Android Question Obfuscation causes ActivityOnKey event to always return null

Sub Globals
    Dim re As Reflector
End Sub

Sub Activity_Create(FirstTime As Boolean)
    Activity.LoadLayout("Layout")
    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
    Log("Key detected")
    
    re.Target = KeyEvent
    Dim Action As Int = re.RunMethod("getAction")
    Log(Action)
    Select Action
        Case Activity.ACTION_UP
            
            Select keyCode               
                Case KeyCodes.KEYCODE_MEDIA_PREVIOUS                   
                        'click a button in the app
                    Return(True) 'to cancel the event
                        
                    'longer press
                Case KeyCodes.KEYCODE_MEDIA_PLAY_PAUSE
                    'click another button in the app                   
                    Return(True) 'to cancel the event           
            
                Case KeyCodes.KEYCODE_MEDIA_NEXT                                       
                    'click another button in the app               
                    Return(True) 'to cancel the event
            
                Case KeyCodes.KEYCODE_VOLUME_UP
                     'click some other button
                    Return True
                Case KeyCodes.KEYCODE_VOLUME_DOWN
                    Log("Volume Down Physical Button (Action = Up)")                   
                    'click some other button
                    Return(True) 'to cancel the event           
            End Select 'for case action up keycodes       
    End Select 'for all actions
End Sub

Private Sub Activity_OnKey(vTag As Object, keyCode As Int, KeyEvent As Object) As Boolean

re.SetOnKeyListener("Activity_OnKey")