oc学习第五天，协议、代理

main.m文件

#import <Foundation/Foundation.h>

#import "Nanny.h"

#import "Child.h"

#import "Care.h"

int main(int argc, const char * argv[]) {

    @autoreleasepool {

//        Nanny *nanny=[[Nanny alloc] init];

//        Child *child=[[Child alloc] initWithClearValue:100 happyValue:100];

        Nanny *n=[[Nanny alloc] init];

        Child *c=[[Child alloc] initWithClearValue:100 happyValue:100];

        c.delegate=n;

        [[NSRunLoop currentRunLoop] run];

    }

    return 0;

}

#import <Foundation/Foundation.h>

#import "Care.h"

@class Nanny;

@interface Child : NSObject

{

    NSInteger _clearValue;

    NSInteger _happyValue;

}

@property NSInteger clearValue;

@property NSInteger happyValue;

//@property Nanny *nanny;

@property id <Care> delegate;

-(instancetype)initWithClearValue:(NSInteger)clearValue happyValue:(NSInteger)happyValue;

-(void)stop;

@end

#import "Child.h"

#import "Nanny.h"

@implementation Child

-(instancetype)initWithClearValue:(NSInteger)clearValue happyValue:(NSInteger)happyValue{

    self=[super init];

    if (self) {

        _clearValue=clearValue;

        _happyValue=happyValue;

        NSTimer *timer=[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timeAction) userInfo:nil repeats:YES];

    }

    return  self;

}

-(void)timeAction{

    _clearValue--;

    _happyValue--;

    NSLog(@"%li",_clearValue);

    NSLog(@"%li",_happyValue);

    if (_clearValue==90) {

        [self.delegate batheChild:self];

    }

    if (_happyValue==95) {

        [self.delegate playChild:self];

    }

}

-(void)stop{

}

@end

#import <Foundation/Foundation.h>

#import "Care.h"

@class Child;

@protocol NannyProtocol <NSObject>

-(void)batheChild:(Child *)child;

-(void)playChild:(Child*)child;

@end

@interface Nanny : NSObject<Care>

@end

#import "Nanny.h"

#import "Child.h"

@implementation Nanny

-(void)batheChild:(Child *)child{

    NSLog(@"小孩洗白白");

    child.clearValue = 100;

}

-(void)playChild:(Child*)child{

    NSLog(@"小孩开心");

    child.happyValue = 100;

}

@end

/

#import <Foundation/Foundation.h>

@class Child;

@protocol Care <NSObject>

-(void)batheChild:(Child *)child;

-(void)playChild:(Child*)child;

@end