Xamarin表格：在相对布局上滑动手势

Question

我有一个Xamarin应用程序，我试图通过自定义渲染器向相对布局添加滑动手势识别器。

public class MainPageCarouselRenderer : VisualElementRenderer<RelativeLayout>
{
    UISwipeGestureRecognizer asd;
    UISwipeGestureRecognizer asd2;

    protected override void OnElementChanged (ElementChangedEventArgs<RelativeLayout> e)
    {
        base.OnElementChanged (e);

        asd = new UISwipeGestureRecognizer (() => {
            e.NewElement.TranslateTo (0, -150, 500, Easing.BounceOut);
        });

        asd.Direction = UISwipeGestureRecognizerDirection.Up;
        asd2 = new UISwipeGestureRecognizer (() => {

            e.NewElement.TranslateTo (0, 0, 500, Easing.BounceOut);
        });

        asd2.Direction = UISwipeGestureRecognizerDirection.Down;
        this.AddGestureRecognizer (asd);
        this.AddGestureRecognizer (asd2);
    }



}

这是我的IOS渲染器中的代码。我调试了这段代码和断点，我把它放在这里。但是当我把断点放在

中时

            asd2 = new UISwipeGestureRecognizer (() => {

            e.NewElement.TranslateTo (0, 0, 500, Easing.BounceOut);
        });

或另一个它没有被击中。有什么想法吗？