OC6_代理的基本概念

//
//  Person.h
//  OC6_代理的基本概念
//
//  Created by zhangxueming on 15/6/24.
//  Copyright (c) 2015年 zhangxueming. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "Dog.h"

@interface Person : NSObject
{
    Dog *_delegate;
}

@property (nonatomic)Dog *delegate;


- (void)go;

@end


//
//  Person.m
//  OC6_代理的基本概念
//
//  Created by zhangxueming on 15/6/24.
//  Copyright (c) 2015年 zhangxueming. All rights reserved.
//

#import "Person.h"

@implementation Person

- (void)go
{
    [_delegate bark];
}

@end

//
//  Dog.h
//  OC6_代理的基本概念
//
//  Created by zhangxueming on 15/6/24.
//  Copyright (c) 2015年 zhangxueming. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Dog : NSObject

- (void)bark;

@end


//
//  Dog.m
//  OC6_代理的基本概念
//
//  Created by zhangxueming on 15/6/24.
//  Copyright (c) 2015年 zhangxueming. All rights reserved.
//

#import "Dog.h"

@implementation Dog

- (void)bark
{
    NSLog(@"Wang wang wang ...");
}

@end

//
//  main.m
//  OC6_代理的基本概念
//
//  Created by zhangxueming on 15/6/24.
//  Copyright (c) 2015年 zhangxueming. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "Person.h"
#import "Dog.h"

//代理:
//买火车票  你 --> 黄牛
//张 <--> 律师
//以张的角度 律师是张的代理 (正向代理)
//从律师的角度看 张是律师的代理 (反向代理)

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        Person  *xiaoXin = [[Person alloc] init];
        Dog *dog = [[Dog alloc] init];
        xiaoXin.delegate = dog;
        [xiaoXin go];
    }
    return 0;
}