如何在Objective-C中将对象设置为接口？

Question

我想知道如何在Objective-C中为接口（即@protocol）创建对象？

Answer 1

It is not very clear what do you want to get.

If you want to define a class that conforms to a protocol you write:

    @interface MyClass: ParentClass <MyProtocol1, MyProtocol2,...>

If you want to define an object that must be an instance of some class that confirms to a protocol you can write:

   id<MyProtocol> myObject;

If you want to obtain Protocol object by name you can use

Protocol *objc_getProtocol(const char *name)

function. I don't know if you can create Protocol in run-time though.