public override bool OnOptionsItemSelected(IMenuItem item) { switch (item.ItemId) { case Resource.Id.main_action_crop: _cropImageView.GetCroppedImageAsync(); return(true); case Resource.Id.main_action_rotate: _cropImageView.RotateImage(90); return(true); default: if (item.ItemId == Resource.Id.main_action_flip_horizontally) { _cropImageView.FlipImageHorizontally(); return(true); } else if (item.ItemId == Resource.Id.main_action_flip_vertically) { _cropImageView.FlipImageVertically(); return(true); } break; } return(base.OnOptionsItemSelected(item)); }