标签栏视图无法加载

Question

在我的app delegate界面中，我有：

@interface pivcalc1AppDelegate : NSObject <UIApplicationDelegate> {
UIWindow *window;
IBOutlet UITabBarController *RootController;

}
@property (nonatomic, retain) IBOutlet UIWindow *Window;
@property (nonatomic, retain) IBOutlet UITabBarController *RootController;

在实施中，我有：

@synthesize Window;
@synthesize RootController;

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

[Window addSubview:RootController.view];
// Override point for customization after application launch.
[self.Window makeKeyAndVisible];
return YES;
}

在我的主xib窗口中，我有一个标签栏控制器，它作为rootController连接到app delegate。 当我运行程序时，窗口显示但是标签栏视图没有加载。 感谢任何帮助。感谢。

Answer 1

你在xib的RootController中有一个subViewController吗？如果你不是，那就是代码。

UITabBarController应该有一个subViewController。

    UINavigationController *localNavigationController;

    NSMutableArray *localViewControllerArray = [[NSMutableArray alloc] initWithCapacity:2];

    SubViewController *subviewController0 = [[SubViewController alloc] init];
    localNavigationController = [[UINavigationController alloc] initWithRootViewController:subviewController0];
    [localViewControllerArray addObject:localNavigationController];
    [subviewController0 release];
    [localNavigationController release];

    SubViewController *subviewController1 = [[SubViewController alloc] init];
    localNavigationController = [[UINavigationController alloc] initWithRootViewController:subviewController1];
    [localViewControllerArray addObject:localNavigationController];
    [subviewController1 release];

    [localNavigationController release];

    RootController.viewControllers = localViewControllerArray;
    [localViewControllerArray release];

    [self.window addSubview:tabBarController.view];
    [self.window makeKeyAndVisible];