如何使用iPhone SDK中的标签栏控制器设置视图插座

@interface MyViewController : UIViewController
@property (weak, nonatomic) IBOutlet UILabel *myLabel;
@end

UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
UIViewController *myViewController = [[UIStoryboard storyboardWithName:@"Main" bundle:nil] instantiateViewControllerWithIdentifier:@"MyViewController"];
tabBarController.viewControllers = @[myViewController];

UITabBarItem *tabBarItem = [[UITabBarItem alloc] initWithTitle:@"My View" image:[UIImage imageNamed:@"my_icon"] tag:0];
myViewController.tabBarItem = tabBarItem;