如何在tabBarController.moreNavigationController中检测到View已加载？

Question

当我从moreNavigationController加载View时，我需要重绘UINavigation Bar。我怎样才能检测到tabBarController.moreNavigationController加载了一个视图？

Answer 1

负责视图的视图控制器将获得viewDidLoad回调。如果您想知道导航推送/弹出视图控制器的时间，您可以设置导航控制器的委托并实现以下方法

- (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated