binding - 在 Monotouch 中使用选择器和消息的绑定问题

Question

我一直在尝试重现这个动画一个视图缩放弹跳？ 在 Monotouch 中，但我遇到了异常，我不知道该怎么做……这些静态方法位于实用程序类中。将消息发送到第一个选择器时会引发异常。

MonoTouch.Foundation.MonoTouchException：抛出Objective-C异常。名称：NSInvalidArgumentException 原因：-[MainScreenbounce1AnimationStopped]：在 AnimationManager.BounceAppear (MonoTouch.BounceAppear (MonoTouch. UIKit.UIViewController 容器，MonoTouch.UIKit.UIView 视图，双倍持续时间）[0x0003a]

    public static void BounceAppear(UIViewController container, UIView view, double duration = 0.5)
    {
        view.Transform = CGAffineTransform.MakeScale(0.001f, 0.001f);
        UIView.BeginAnimations(null);
        UIView.SetAnimationDuration(0.3f/1.5f);
        UIView.SetAnimationDelegate(container);
        var selector = new MonoTouch.ObjCRuntime.Selector("bounce1AnimationStopped");
        Messaging.void_objc_msgSend_IntPtr_IntPtr(container.Handle, selector.Handle, container.Handle, view.Handle);
        UIView.SetAnimationDidStopSelector(selector);
        view.Transform = CGAffineTransform.MakeScale(1.1f, 1.1f);
        UIView.CommitAnimations();
    }

    [Export("bounce1AnimationStopped:forView")]
    public static void Bounce1AnimationStopped(UIViewController container,UIView view)
    {
        Console.WriteLine("Bounce1AnimationStopped");
        UIView.BeginAnimations(null);
        UIView.SetAnimationDuration(0.3f/2.0f);
        UIView.SetAnimationDelegate(container);
        var selector = new MonoTouch.ObjCRuntime.Selector("bounce2AnimationStopped");
        Messaging.void_objc_msgSend_IntPtr_IntPtr(container.Handle, selector.Handle, container.Handle, view.Handle);
        view.Transform = CGAffineTransform.MakeScale(0.9f,0.9f);
        UIView.CommitAnimations();
    }

    [Export("bounce2AnimationStopped:forView")]
    public static void Bounce2AnimationStopped(UIViewController container, UIView view)
    {
        Console.WriteLine("Bounce2AnimationStopped");
        UIView.BeginAnimations(null);
        UIView.SetAnimationDuration(0.3f/2.0f);
        view.Transform = CGAffineTransform.MakeIdentity();
        UIView.CommitAnimations();
    }

Answer 1

好的，我忘记注册我的课程并将其参考传递给消息传递函数

private static IntPtr class_ptr = Class.GetHandle("animationManager");

接着

Messaging.void_objc_msgSend_IntPtr_IntPtr(class_ptr, selector.Handle, container.Handle, view.Handle);