How to write it without "@"

[JacekK]

I have a code lie this:

    // Initialize List View Controller
    MTListViewController *listViewController = [[MTListViewController alloc] init];
    // Initialize Navigation Controller
    UINavigationController *listNavigationController = [[UINavigationController alloc] initWithRootViewController:listViewController];
    // Initialize Tab Bar Controller
    UITabBarController *tabBarController = [[UITabBarController alloc] init];
    // Configure Tab Bar Controller
    [tabBarController setViewControllers:@[listNavigationController]];

its code from tutorial i am doing right now, i have old version of xcode (4.2) and this is not working:

[tabBarController setViewControllers:@[listNavigationController]]

How can i write it without using "@"

[ArtOfWarfare]

The @ signifies an Obj-C literal. In this case, what you specifically want is an NSArray literal.

To get this same NSArray as a non-literal, you can do:

NSArray *navigationControllerArray = [NSArray arrayWithObject:listNavigationController];
[tabBarController setViewControllers:navigationControllerArray animated:NO];

Also, note that there isn't a method for UITabBarController called setViewControllers:, it's called setViewControllers:animated:...

[KoolStar]

Originally Posted by ArtOfWarfare

The @ signifies an Obj-C literal. In this case, what you specifically want is an NSArray literal.

To get this same NSArray as a non-literal, you can do:

NSArray *navigationControllerArray = [NSArray arrayWithObject:listNavigationController];
[tabBarController setViewControllers:navigationControllerArray animated:NO];

Also, note that there isn't a method for UITabBarController called setViewControllers:, it's called setViewControllers:animated:...

If you have multiple object you would have to use arrayWithObjects just an FYI.

[PhoneyDeveloper]

OP (and ArtOfWar), if you look at the UITabBarController header you'll find the relevant property:

@property(nonatomic,copy) NSArray *viewControllers;

That's the method you're using so the required parameter is an array of view controllers.