Question

我无法将某个标签视图设置为UiNavigation控制器。我得到的警告是：

Pushing a navigation controller is not supported

这是我的代码：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    UIViewController *viewController1, *viewController2, *viewController3, *viewController4;
        viewController1 = [[HomeViewController alloc] initWithNibName:@"HomeViewController_iPhone" bundle:nil];
        viewController2 = [[SearchViewController alloc] initWithNibName:@"SearchViewController_iPhone" bundle:nil];
        viewController3 = [[ListViewController alloc] initWithNibName:@"ListViewController_iPhone" bundle:nil];
        viewController4 = [[InfoViewController alloc] initWithNibName:@"InfoViewController_iPhone" bundle:nil];

    self.tabBarController = [[UITabBarController alloc] init];
    UINavigationController * listNavController = [[UINavigationController alloc] initWithRootViewController:viewController3];
    self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, listNavController, viewController4, nil];
    self.window.rootViewController = self.tabBarController;
    [self.window makeKeyAndVisible];
    return YES;
}

Answer 1

self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, listNavController, viewController4, nil];

到

self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, viewController3, viewController4, nil];

并在需要时保留对导航控制器的引用。我认为这是正确的方法，但你也可以将导航控制器包装在一个简单的UIViewController中。如果不能保证viewController3始终是堆栈中最底层的VC，那么您可能希望这样做。

无法将UINavBarController设置为UITabBarController

1 个答案: