Question

我的问题是关于UITabbarcontroller。我在我的Appdelegate中声明了一个UInavigation控制器和一个UITabbarcontroller。但是我希望我的tabbar按钮改变了当我的UIViewController由NavigationController改变时。

 SettingsViewController *sett = [[SettingsViewController alloc]init];

self.navigationController = [[UINavigationController alloc]init];
[self.navigationController.navigationBar setTranslucent:NO];
[self.navigationController.navigationBar setTintColor:[UIColor blackColor]];
self.navigationController.viewControllers = [NSArray arrayWithObject:viewController1];

self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:self.navigationController,sett, nil];

self.window.rootViewController = self.tabBarController;

如何做到这一点？

Answer 1

使用UINavigationControllerDelegate

@interface SettingsViewController : UIViewController <UINavigationControllerDelegate>

<。>文件中的

然后

.m文件中的

self.navigationController.delegate = self;

您可以使用方法检测NavigationController中的更改

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

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

不同的UITabbar按钮

1 个答案: