8.ios-Protocol

BoosProtocol.h

#import <Foundation/Foundation.h>
//创建协议
@protocol BoosProtocol <NSObject>
@required
//必须实现的方法
-(NSInteger)buyWood;
@optional
//可选实现
-(void)text3;
@end

WorkeProtocol.h

#import <Foundation/Foundation.h>

@protocol WorkeProtocol <NSObject>
-(void)salary;

@end

Boss.h

#import <Foundation/Foundation.h>
#import "BoosProtocol.h"
#import "WorkeProtocol.h"
@interface Boss : NSObject<WorkeProtocol>
//拥有委托权
//必须用weak
@property(nonatomic,weak)id <BoosProtocol>delegate;
@property(nonatomic,copy)NSTimer*myTime;
-(void)wantWood;
@end

Boss.m

#import "Boss.h"

@implementation Boss

- (instancetype)init
{
    self = [super init];
    if (self) {
        /*
         第一个参数:时间间隔
         第二个参数:实现位置
         第三个参数:调用的方法
         第四个参数:携带参数
         第五个参数:是否可以重复

         */
        _myTime=[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(wantWood) userInfo:nil repeats:YES];
    }
    return self;
}

-(void)wantWood{
    if (_delegate&&[_delegate respondsToSelector:@selector(buyWood)]) {
        NSInteger n =[_delegate buyWood];
        if (n>=100) {
            //判断定时器是否运行
            if ([_myTime isValid]) {
                [_myTime invalidate];
                _myTime=nil;
            }
            CFRunLoopStop(CFRunLoopGetCurrent());
        }

    }

}

-(void)salary{
    NSLog(@"表现很好，工资5000，奖金1000");
}

@end

Worker.h

#import <Foundation/Foundation.h>
#import "BoosProtocol.h"
#import "WorkeProtocol.h"
//遵守协议
@interface Worker : NSObject<BoosProtocol>
@property(nonatomic,assign)NSInteger progress;
@property(nonatomic,weak)id<WorkeProtocol>delegate;
-(void)getMoney;
@end

Worker.m

#import "Worker.h"

@implementation Worker
- (instancetype)init
{
    self = [super init];
    if (self) {
        _progress=0;
    }
    return self;
}

-(void)getMoney{
    if (_delegate&&[_delegate respondsToSelector:@selector(salary)]) {
        [_delegate salary];
    }

}
//实现协议
-(NSInteger)buyWood{
    _progress+=10;
    NSLog(@"当前进度%zi",_progress);
    if (_progress>=100) {
        [self getMoney];
    }
    return _progress;
}
@end

main.m

/*
 代理对象=delegate
 代理模式的实现步骤：
 1. 创建协议文件，定义协议he方法
 2. 代理对象遵循协议
 3. 指定代理对象
 4. 通过代理调用方法
 */

#import <Foundation/Foundation.h>
#import "Boss.h"
#import "Worker.h"
int main(int argc, const char * argv[]) {
    @autoreleasepool {
        Boss*boos=[[Boss alloc]init];
        Worker*worke=[[Worker alloc]init];
        //3.boss指定代理对象worker
        //一对一
        boos.delegate=worke;
        worke.delegate=boos;
        //boss提出需求
        //通过代理调用方法
        //[boss wantWood];

        //[[NSRunLoop mainRunLoop] run];
        CFRunLoopRun();

    }
    return 0;
}