public override Boolean DispatchKeyEvent(KeyEvent e)
    {
        _Main_Fragment = FragmentManager.BeginTransaction();
        Menu.Main_Title_Fragment _Main_Title_Fragment = new Menu.Main_Title_Fragment();

        switch(e.KeyCode)
        {
            case Keycode.Num0:

                if(e.Action == KeyEventActions.Up && e.IsLongPress == false)
                {
                    //Console.WriteLine("+++++++++++++++++++++++++++++++ KeyDeviceId : " + e.DeviceId + ", KeyCode : " + e.KeyCode + ", KeyScanCode : " + e.ScanCode);

                    LayoutInflater _Adjust_inflater = (LayoutInflater)this.GetSystemService(Context.LayoutInflaterService);
                    View _Adjust_Popup = _Adjust_inflater.Inflate(Resource.Layout.Menu_Adjust_Window, null);

                    PopupWindow _Adjust_Window = new PopupWindow(_Adjust_Popup, 700, 300);
                    _Adjust_Window.SetBackgroundDrawable(new BitmapDrawable());
                    _Adjust_Window.OutsideTouchable = true;

                    _Adjust_Window.Focusable = true;
                    _Adjust_Window.ShowAtLocation(_Adjust_Popup, GravityFlags.Center, 0, 0);

                    _Gain_Switch = (Switch)_Adjust_Popup.FindViewById(Resource.Id._Gain_Switch);
                    _Gain_SeekBar = (SeekBar)_Adjust_Popup.FindViewById(Resource.Id._Gain_SeekBar);
                    _Gain_SeekBar_Text = (TextView)_Adjust_Popup.FindViewById(Resource.Id._Gain_SeekBar_Text);

                    _Gain_Switch.Checked = false;
                    _Gain_SeekBar.Enabled = false;
                    _Gain_SeekBar_Text.Text = "0";
                    _Gain_SeekBar_Text.SetTextColor(Color.Gray);

                    _Gain_Switch.CheckedChange += _Gain_Switch_CheckedChange;


                    _Sea_Switch = (Switch)_Adjust_Popup.FindViewById(Resource.Id._Sea_Switch);
                    _Sea_SeekBar = (SeekBar)_Adjust_Popup.FindViewById(Resource.Id._Sea_SeekBar);
                    _Sea_SeekBar_Text = (TextView)_Adjust_Popup.FindViewById(Resource.Id._Sea_SeekBar_Text);

                    _Sea_Switch.Checked = false;
                    _Sea_SeekBar.Enabled = false;
                    _Sea_SeekBar_Text.Text = "0";
                    _Sea_SeekBar_Text.SetTextColor(Color.Gray);

                    _Sea_Switch.CheckedChange += _Sea_Switch_CheckedChange;


                    _Rain_Switch = (Switch)_Adjust_Popup.FindViewById(Resource.Id._Rain_Switch);
                    _Rain_SeekBar = (SeekBar)_Adjust_Popup.FindViewById(Resource.Id._Rain_SeekBar);
                    _Rain_SeekBar_Text = (TextView)_Adjust_Popup.FindViewById(Resource.Id._Rain_SeekBar_Text);

                    _Rain_Switch.Checked = false;
                    _Rain_SeekBar.Enabled = false;
                    _Rain_SeekBar_Text.Text = "0";
                    _Rain_SeekBar_Text.SetTextColor(Color.Gray);

                    _Rain_Switch.CheckedChange += _Rain_Switch_CheckedChange;
                }

                if (e.IsLongPress == true)
                {
                    LayoutInflater _Power_infalter = (LayoutInflater)this.GetSystemService(Context.LayoutInflaterService);
                    View _Power_Popup = _Power_infalter.Inflate(Resource.Layout.Menu_Power_Window, null);

                    PopupWindow _Power = new PopupWindow(_Power_Popup, 500, 300);
                    _Power.SetBackgroundDrawable(new BitmapDrawable());

                    ImageButton _Custom_Back_Button = (ImageButton)_Power_Popup.FindViewById(Resource.Id._Custom_Back_Button);
                    ImageButton _Custom_Exit_Button = (ImageButton)_Power_Popup.FindViewById(Resource.Id._Custom_Exit_Button);

                    _Power.ShowAtLocation(_Power_Popup, GravityFlags.Center, 0, 0);

                    _Custom_Back_Button.Click += (a, b) =>
                    {
                        _Power.Dismiss();
                    };

                    _Custom_Exit_Button.Click += (u, n) =>
                    {
                        Android.OS.Process.KillProcess(Android.OS.Process.MyPid());
                    };

                }
                return true;

        }

        return base.DispatchKeyEvent(e);
    }

현재 코드인데, KeyUp 부분에는 임시로 넣은 팝업창입니다. 이 상태에서 실행시켜서 하드키를 누르면 짧게 눌렀다 때면 당연히 KeyUp에 있는 이벤트가 발생합니다만, LongPress로 길게 눌렀을 때, 두번째 이벤트가 발생하면 버튼에서 손을 때는 순간 당연히 같이 KeyUp 이벤트도 발생합니다.

근데 제가 하고 싶은 건 KeyUp 에 이벤트는 진짜 딱 버튼을 한번 눌렀다땟을때만 발생하고, LongPress에 이벤트가 발생했을 때는 KeyUp이 발생안하게 하고 싶습니다..

어떻게 해야할까요?