c# - IOS 到 C# 什么等同于 id<>

Question

我有一个 IOS 代码要用 c# 重写，它有这个 id<UIGestureRecognizerDelegate> gestureDelegate;

我如何用 C# 重写它？

@property (weak, nonatomic) id<UIGestureRecognizerDelegate> gestureDelegate;

实际上我是这样声明的 UIGestureRecognizerDelegate gestureDelegate;但这是对的吗？ 如果我没看错的话，id就像var在 C# 中？ 如果是这样，我如何将其声明为类参数？

Answer 1

C# interface就像protocol在 Objective-C 中，id<UIGestureRecognizerDelegate>表示该对象实现了 UIGestureRecognizerDelegate 中定义的方法.所以 C# 中的相同内容可能是(主要思想，未在 IDE 中测试):

interface UIGestureRecognizerDelegate {
   public bool gestureRecognizerShouldBegin(UIGestureRecognizer gestureRecognizer);
}

class Example {
   public UIGestureRecognizerDelegate gestureDelegate; //the equivalent
}

和一个符合接口(interface)的类:

public class ExampleViewController:UIViewController,UIGestureRecognizerDelegate {
   var example = Example();

   public ExampleViewController() {
       this.example.gestureDelegate = this;
   }

   //implements the methods of interface UIGestureRecognizerDelegate
   public bool gestureRecognizerShouldBegin(UIGestureRecognizer gestureRecognizer) {
       //......
   }
}