protected override void OnPrepareDialogBuilder(AlertDialog.Builder builder)
        {
            base.OnPrepareDialogBuilder(builder);

            builder.SetOnKeyListener(new KeyListener((dialog, keyCode, e) =>
            {
                if (e.Action != KeyEventActions.Up)
                {
                    if (keyCode == Keycode.Plus || keyCode == Keycode.Equals)
                    {
                        _seekBar.Progress = _seekBar.Progress + 1;
                        return(true);
                    }

                    if (keyCode == Keycode.Minus)
                    {
                        _seekBar.Progress = _seekBar.Progress - 1;
                        return(true);
                    }
                }

                return(false);
            }));
        }