如何在更改主視圖控制器中的選項卡時加載不同的視圖控制器？

我正在創建一個iPad，如link。在這個我需要加載不同的視圖控制器，當我改變主界面的選項卡。我怎樣才能實現這個？我創建了的TabBar控制器如下：在Appdelegate.m文件如何在更改主視圖控制器中的選項卡時加載不同的視圖控制器？

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
{ 
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease]; 
    // Override point for customization after application launch. 

    tabBarController = [[UITabBarController alloc] init]; 

    StudentVC *stdntVC = [[[StudentVC alloc]initWithNibName:@"StudentVC" bundle:nil] autorelease]; 
    TeachersVC *teachersVC = [[[TeachersVC alloc]initWithNibName:@"TeachersVC" bundle:nil] autorelease]; 
    MasterViewController *masterViewController = [[[MasterViewController alloc] initWithNibName:@"MasterViewController" bundle:nil] autorelease]; 
    ConfigurationVC *configViewController = [[[ConfigurationVC alloc] initWithNibName:@"ConfigurationVC" bundle:nil] autorelease]; 

    UINavigationController *masterNavigationController = [[[UINavigationController alloc] initWithRootViewController:masterViewController] autorelease]; 
    UINavigationController *studentNavigationController = [[[UINavigationController alloc] initWithRootViewController:stdntVC] autorelease]; 
    UINavigationController *teacherNavigationController = [[[UINavigationController alloc] initWithRootViewController:teachersVC] autorelease]; 
    UINavigationController *configNavigationController = [[[UINavigationController alloc] initWithRootViewController:configViewController] autorelease]; 

    NSArray* controllers = [NSArray arrayWithObjects:studentNavigationController,teacherNavigationController,masterNavigationController, configNavigationController, nil]; 
    tabBarController.viewControllers = controllers; 

    ShowDetailsVC *showViewController = [[[ShowDetailsVC alloc] initWithNibName:@"ShowDetailsVC" bundle:nil] autorelease]; 
    UINavigationController *detailNavigationController = [[[UINavigationController alloc] initWithRootViewController:showViewController] autorelease]; 


    self.splitViewController = [[[UISplitViewController alloc] init] autorelease]; 
    self.splitViewController.viewControllers = [NSArray arrayWithObjects:tabBarController, detailNavigationController, nil]; 

    self.splitViewController.delegate = showViewController; 

    self.window.rootViewController = self.splitViewController;  

    stdntVC.detailsVC = showViewController; 
    teachersVC.detailsVC = showViewController; 
    masterViewController.detailsVC = showViewController; 
    configViewController.detailsVC = showViewController; 

    [self.window makeKeyAndVisible]; 

    return YES; 
}

這裏是截屏： enter image description here 請分享您的想法。

來源

2012-02-22 Mithuzz

你能發表截圖嗎？ – user523234 2012-02-22 08:31:31

我已添加，請現在檢查。 – Mithuzz 2012-02-22 08:42:32

您可以使用UITabBarControllerDelegate的方法– tabBarController:didSelectViewController:來知道選擇哪個viewController。並刷新你的主視圖

https://developer.apple.com/library/ios/#documentation/uikit/reference/UITabBarControllerDelegate_Protocol/Reference/Reference.html

來源

2012-02-22 08:45:56 Alkimake

但我應該在哪裏添加此代碼？在appdelegate文件中？以及如何刷新masterview？ – Mithuzz 2012-02-22 08:49:05

你可以在appdelegate中創建你的tabBar，你可以將這個方法添加到你的應用程序委託中，並且確保你的appdelegate定義爲'UITabBarControllerDelegate'，將這個協議推送到你的.h文件並且添加'tabBarController.delegate = self;'到你的代碼中。 – Alkimake 2012-02-22 08:53:16

想要了解更多關於協議的信息（代表），請看http://iphonedevelopertips.com/objective-c/the-basics-of-protocols-and-delegates.html – Alkimake 2012-02-22 08:53:50

如何在更改主視圖控制器中的選項卡時加載不同的視圖控制器？

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