tabbarcontroller以编程方式添加ios，但不打开选项卡

我想使用一个没有导航控制器的选项卡栏控制器，并且我希望它以编程方式实现

My MainViewController是TabBarController的子类，下面是其中的代码：

 (void)viewDidLoad
{
    [super viewDidLoad];

    self.viewControllers = [NSArray arrayWithObjects:
                            [self myLikesViewControllerWithTabTitle:@"My Likes" image:[UIImage imageNamed:@"tab_feed.png"]],
                            [self mainStreamViewControllerWithTabTitle:@"Stream" image:nil],
                            [self viewControllerWithTabTitle:@"Messages" image:[UIImage imageNamed:@"tab_messages.png"]], nil];



    self.tabBarController.selectedIndex = 2;

}

其中：

// Create a view controller and setup it's tab bar item with a title and image
-(UIViewController*) viewControllerWithTabTitle:(NSString*) title image:(UIImage*)image
{
    UIViewController* viewController = [[UIViewController alloc] init];
    viewController.tabBarItem = [[UITabBarItem alloc] initWithTitle:title image:image tag:0];
    return viewController;
}

// Create a view controller and setup it's tab bar item with a title and image
-(UIViewController*) myLikesViewControllerWithTabTitle:(NSString*) title image:(UIImage*)image
{
    UIViewController* viewController = [[UIViewController alloc] initWithNibName:@"MyLikesViewController" bundle:nil];
    viewController.tabBarItem = [[UITabBarItem alloc] initWithTitle:title image:image tag:0];
    return viewController;
}

// Create a view controller and setup it's tab bar item with a title and image
-(UIViewController*) mainStreamViewControllerWithTabTitle:(NSString*) title image:(UIImage*)image
{
    UIViewController* viewController = [[UIViewController alloc] initWithNibName:@"StreamViewController" bundle:nil];
    viewController.tabBarItem = [[UITabBarItem alloc] initWithTitle:title image:image tag:0];
    return viewController;
}

我可以看到正在创建的选项卡，但无论单击什么，我都看不到要打开的已创建的XIB

我错过什么了吗

---

谢谢

在哪里使用viewControllerWithTabTitle:image:method？返回值？。您何时何地调用该方法？@rdelmar在ViewDidLoad中。ViewController已添加到self.viewControllers数组中。抱歉，我误读了您的代码。只要方法中的nib名称与您的实际名称匹配，您所拥有的就可以工作。您的图像可能有问题。它们的大小是否适合选项卡栏中的图像（它们的大小不适合您）？运行应用程序时，您看到了什么？