iOS基础——通知代理之NSNotificationCenter、Delegate（新）

// // CarModel.h // DelegateDemo // // Created by handsome xu on 2017/3/13. // Copyright © 2017年 hensen. All rights reserved. // #import <Foundation/Foundation.h> @class CarModel; //自定义代理 @protocol CarModelDelegate <NSObject> //1、必须实现的回调方法 @required -(void)getCarModel:(CarModel *)model; //2、可选实现的回调方法 @optional -(void)getCarOtherModel:(CarModel *)model; @end @interface CarModel : NSObject @property (nonatomic,strong)NSString *name; @property (nonatomic,strong)NSString *nickName; //声明代理 @property (nonatomic,weak)id<CarModelDelegate> delegate; //声明方法，模拟按钮点击 -(void)didclickButton; @end