如何在objective-c上执行：扩展协议和接口，如java中所示 [英] how to do it on objective-c: extending protocol and interface like in java

问题描述

我在java中有这个：

I have this in java:

public interface SomeInterface {
    public void doSomething();
}

public class ParentClass {
}

public class ChildClass extends ParentClass implements SomeInterface {
    public void doSomething() { }
}

这在目标c上是否可行？如何在objective-c上做到这一点？

Is this possible on objective c? How to do it on objective-c?

推荐答案

听起来你只是问我怎么宣布这个课程符合协议吗？如果这就是你要问的问题，可可充满了例子。这是NSString的声明：

It sounds like you're just asking "How do I declare that a class conforms to a protocol?" If that's what you're asking, Cocoa is full of examples. Here's the declaration of NSString:

@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding>

您可能会从阅读Apple的概述中获益， Objective-C编程语言。它简短，涵盖了您需要了解的关于Objective-C语言本身的所有内容。

You would probably benefit from reading Apple's overview, The Objective-C Programming Language. It's short and covers pretty much everything you need to know about the Objective-C language itself.

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