说明
该模式的好处就是两个产生联系的对象间并没有具体的耦合代码,增删改查均很直观
源码
Model
// // Model.h // SELMethod // // Created by YouXianMing on 15/5/22. // Copyright (c) 2015年 YouXianMing. All rights reserved. // #import <Foundation/Foundation.h> #define SafePerformSelector(Stuff) do { _Pragma("clang diagnostic push") _Pragma("clang diagnostic ignored \"-Warc-performSelector-leaks\"") Stuff; _Pragma("clang diagnostic pop") } while (0) @interface Model : NSObject /** * 属性名字 */ @property (nonatomic, strong) NSString *name; /** * 设置代理与方法 */ @property (nonatomic, weak) id delegate; @property (nonatomic) SEL method; - (void)doSomeThing; @end
// // Model.m // SELMethod // // Created by YouXianMing on 15/5/22. // Copyright (c) 2015年 YouXianMing. All rights reserved. // #import "Model.h" @implementation Model - (void)doSomeThing { // 执行代理以及方法 if (_method && _delegate) { SafePerformSelector([_delegate performSelector:_method withObject:self]); } } @end
ViewController
// // ViewController.m // SELMethod // // Created by YouXianMing on 15/5/22. // Copyright (c) 2015年 YouXianMing. All rights reserved. // #import "ViewController.h" #import "Model.h" @interface ViewController () @property (nonatomic, strong) Model *model; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // 初始化对象 self.model = [Model new]; self.model.name = @"YouXianMing"; // 设置代理与方法 self.model.method = @selector(modelValue:); self.model.delegate = self; // 执行操作 [self.model doSomeThing]; } - (void)modelValue:(Model *)value { NSLog(@"%@", value.name); } @end
细节
时间: 2024-10-10 11:39:51