Objective-C UIViewController 生命周期方法: willMoveToParentViewController 和 didMoveToParentViewController

(void)willMoveToParentViewController:(UIViewController *)parent { [super willMoveToParentViewController:parent]; NSLog('111111111111c %s,%@',FUNCTION,parent); }

(void)didMoveToParentViewController:(UIViewController *)parent { [super didMoveToParentViewController:parent]; NSLog('2222222222222 %s,%@',FUNCTION,parent); if(!parent){ NSLog('页面pop成功了'); } }