控制器view生命周期

控制器View的生命周期方法:只要是控制器的生命周期方法,都是以view开头.


控制器View加载完成时调用
- (void)viewDidLoad {
  [super viewDidLoad];
}


控制器的View显示完成时调用
-(void)viewDidAppear:(BOOL)animated{
  [super viewDidAppear:animated];
}


控制器的View即将显示的时候调用
-(void)viewWillAppear:(BOOL)animated{
  [super viewWillAppear:animated];
}


控制器的View完全消失的时候调用
-(void)viewDidDisappear:(BOOL)animated{
  [super viewDidDisappear:animated];
}


控制器的View即将消失的时候调用.
-(void)viewWillDisappear:(BOOL)animated{
  [super viewWillDisappear:animated];
}


布局控制器View的子控件完成时调用
-(void)viewDidLayoutSubviews{
  [super viewDidLayoutSubviews];
}


将要布局控制器的View里⾯面子控件的时候就会调用.
-(void)viewWillLayoutSubviews{
  [super viewWillLayoutSubviews];
}

 

ARC的生命周期
viewDidLoad->viewWillAppear->viewWillLayoutSubviews->viewDidLayoutSubviews->viewDidAppear->viewWillDisappear->viewDidDisappear



在非ARC当中.
当前控制器的View即将被销毁的时候会调用
-(void)viewWillUnload{
[super viewWillUnload];
}


当前控制器的View被销毁的时候会调用
-(void)viewDidUnload{
[super viewDidUnload];
清空界面上的数据.
self.dataList = nil;
}
viewDidLoad->viewWillAppear->viewWillLayoutSubviews->viewDidLayoutSubviews->viewDidAppear->viewWillDisappear->viewDidDisappear->接收到内存警告->viewWillUnload->释放View->viewDidUnload



posted @ 2017-05-30 17:09  iFat  阅读(181)  评论(0编辑  收藏  举报