UINavigationController启动UITabB…

1. UINavigationController作为App的根视图显示

在AppDelegate文件中指定根视图

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

//TestViewController是一个UIViewController

TestViewController *testViewController = [[TestViewController alloc] init];

    UINavigationController *navgitionController = [[UINavigationController alloc] initWithRootViewController:testViewController];

    navgitionController.navigationBarHidden = YES;//全屏显示

    

    self.window.rootViewController = navgitionController;

    

    [self.window makeKeyAndVisible];

2. 在TestViewController中实现页面跳转到UITabBarController

MainViewController *mainController = [[[MainViewController alloc] init] autorelease];

    [self.navigationController pushViewController:(UIViewController*)mainController animated:YES];

MainViewController是一个UITabBarController视图，采用pushViewController方式实现页面跳转，跳转时候需要对mainController做强制类型转换成UIViewController