UITabBarController与UINavigationController配合使用

在ios应用开发中，最常用的一种方式就是UITabBarController与UINavigationController配合使用。

这篇文章主要以一个含两个标签面的应用来介绍一下两种情况：

1.UITabBarController各子界面是独立的导航关系，互不影响，启动代码如下：

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

{

self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

// Override point for customization after application launch.

// 整体是一个UITabBarController，每个界面都是一个UINavigationCongtroller。

UIViewController *viewController1 = [[[FirstViewController alloc] initWithNibName:@”FirstViewController” bundle:nil] autorelease];

UIViewController *viewController2 = [[[SecondViewController alloc] initWithNibName:@”SecondViewController” bundle:nil] autorelease];

UINavigationController* nav1 = [[[UINavigationController alloc] initWithRootViewController:viewController1] autorelease];

UINavigationController* nav2 = [[[UINavigationController alloc] initWithRootViewController:viewController2] autorelease];

UITabBarController* tabBarController = [[[UITabBarController alloc] init] autorelease];

tabBarController.viewControllers = [NSArray arrayWithObjects:nav1,nav2, nil];

// 这里是不同之处是，根界面UITabBarController

self.window.rootViewController = tabBarController;

[self.window makeKeyAndVisible];

return YES;

}

2.应用整体是一个导航关系，只在根界面上分tab页。启动代码如下：

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

{

self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

// Override point for customization after application launch.

// 整体是一个UINavigationController，根界面包含两个tabBar界面。

UIViewController *viewController1 = [[[FirstViewController alloc] initWithNibName:@”FirstViewController” bundle:nil] autorelease];

UIViewController *viewController2 = [[[SecondViewController alloc] initWithNibName:@”SecondViewController” bundle:nil] autorelease];

UITabBarController* tabBarController = [[[UITabBarController alloc] init] autorelease];

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

UINavigationController* navController = [[[UINavigationController alloc] initWithRootViewController:tabBarController] autorelease];

// 这里是不同之处是，根界面UINavigationController

self.window.rootViewController = navController;

[self.window makeKeyAndVisible];

return YES;

}