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UIViewController生命周期控制-开发规范

2024-11-10 14:22:02   202人阅读

　　从网上各位iOS们收集并总结：

　　技术分享

 

各方法使用：
  • 　　init 中初始化一些UI组件，比如UIButton,UILabel等
  • 　　loadView 中
    • 　　createFields 接受参数,初始化变量
    • 　　createViews 创建视图
    • 　　createEvents 绑定事件,如按钮的点击,NotificationCenter,kvo等
  • 　　viewDidLoad
    • 　　loadData 加载数据,调用一些api
  • 　　dealloc（现在dealloc中做的事我放在了viewDidDisapper中）
    • 　　destroyEvents 取消事件的绑定
    • 　　destroyViews 释放,销毁视图
    • 　　destroyFields 释放,销毁引用的变量
  • 　　didReceiveMemoryWarning
    • 　　cleanData 释放一些可以释放的数据
  • 　　额外
    • 　　enterForeground 进入前台时调用
    • 　　enterBackground 进入后台时调用
规范文件内部组织结构：

    统一UIViewController风格，首先是头文件：

1 @interfaceUIViewController(base)2 #pragma mark- model3 // 定义model4 #pragma mark- view5 // 定义view6 #pragma mark- api7 // 定义api8  9 @end
    然后是实现文件：
#pragma mark - api// 对外的接口#pragma mark - rewrite// 额外的重写的父类的方法#pragma mark -private//...#pragma mark -响应 model 的地方//...#pragma mark 1 notification//...#pragma mark 2 KVO//...#pragma mark -响应 view 的地方//...#pragma mark 1 target-action//...#pragma mark 2delegate dataSource protocol//...#pragma mark -其他//...

    统一命名：

　　实现可以用runtime，也可以用基类，个人推荐是用基类，但是下面的代码是runtime的

  1. @implementationUIViewController(base)+(void)load {　　XY_swizzleInstanceMethod([UIViewControllerclass],@selector(loadView),@selector(xy__loadView));　　XY_swizzleInstanceMethod([UIViewControllerclass],@selector(viewDidLoad),@selector(xy__viewDidLoad));　　XY_swizzleInstanceMethod([UIViewControllerclass],NSSelectorFromString(@"dealloc"),@selector(xy__dealloc));　　XY_swizzleInstanceMethod([UIViewControllerclass],@selector(didReceiveMemoryWarning),@selector(xy__didReceiveMemoryWarning));}-(void) xy__loadView {　　[self xy__loadView];　　if([self respondsToSelector:@selector(createFields)])　　[self performSelector:@selector(createFields)];　　if([self respondsToSelector:@selector(createViews)])　　[self performSelector:@selector(createViews)];　　if([self respondsToSelector:@selector(enterBackground)]){　　[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(enterBackground) name:UIApplicationDidEnterBackgroundNotification object:nil];　　}　　if([self respondsToSelector:@selector(enterForeground)]){　　[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(enterForeground) name:UIApplicationWillEnterForegroundNotification object:nil];　　}　　if([self respondsToSelector:@selector(createEvents)])　　[self performSelector:@selector(createEvents)];}-(void)xy__dealloc {　　[[NSNotificationCenter defaultCenter] removeObserver:self];　　if([self respondsToSelector:@selector(destroyEvents)])　　[self performSelector:@selector(destroyEvents)];　　if([self respondsToSelector:@selector(destroyViews)])　　[self performSelector:@selector(destroyViews)];　　if([self respondsToSelector:@selector(destroyFields)])　　[self performSelector:@selector(destroyFields)];　　[self xy__dealloc];}-(void)xy__viewDidLoad {　　if([self respondsToSelector:@selector(loadData)])　　[self performSelector:@selector(loadData)];　　[self xy__viewDidLoad];}-(void)xy__didReceiveMemoryWarning {　　if([self isViewLoaded]&&[self.view window]== nil){　　if([self respondsToSelector:@selector(cleanData)])　　[self performSelector:@selector(cleanData)];　　}　　[self xy__didReceiveMemoryWarning];}@end

     

  2. 欢迎拍砖指正。
来自为知笔记(Wiz)



UIViewController生命周期控制-开发规范


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