Question

我一直在努力重现这个Animate a view zoom-bouncing in? 在Monotouch，但我遇到了一个例外，我不知道该怎么做...... 这些静态方法属于实用类。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： - [MainScreen bounce1AnimationStopped]：无法识别的选择器发送到实例0x13908570 at at（wrapper managed-to-native）MonoTouch.ObjCRuntime.Messaging：void_objc_msgSend_IntPtr_IntPtr（intptr，intptr，intptr，intptr）在AnimationManager.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，我忘了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");

然后

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

在Monotouch中使用Selector和Messaging的绑定问题

1 个答案: