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

• (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'); } }

func willMove(toParentViewController parent: UIViewController?) { super.willMove(toParentViewController: parent) print('111111111111c (#function),(String(describing: parent))') }

func didMove(toParentViewController parent: UIViewController?) { super.didMove(toParentViewController: parent) print('2222222222222 (#function),(String(describing: parent))') if parent == nil { print('页面pop成功了') } }