This is a custom container view controller for iOS 5 that works just like a regular UITabBarController, except the tabs are at the buttom and the more button expands up instead of taking you to a new table controller.
To use:
Declare your app delegate @interface CRTabBarAppDelegate : UIResponder <UIApplicationDelegate, CRTabBarControllerDelegate>
And setup your controllers
UIViewController *crCategoriesslidingViewController = [[UIViewController alloc] init];
UINavigationController *categoriesNavigationController = [[UINavigationController alloc] initWithRootViewController:crCategoriesslidingViewController];
UITabBarItem* tabBarItem = [[UITabBarItem alloc] init];
[tabBarItem setFinishedSelectedImage: [UIImage imageNamed: @"ICN_home_ON"]
withFinishedUnselectedImage: [UIImage imageNamed: @"ICN_home"]];
[categoriesNavigationController setTabBarItem: tabBarItem];
[viewControllers addObject:categoriesNavigationController];
The case above is a view controller wrapped in a navigation controller so we can push other views if we want to from the controller that was loaded.
The code is a compulation of
https://github.com/hollance/MHTabBarController/
And
https://github.com/brendandixon/ExpandableTabBar
Thanks to Joe Scarano http://joescarano.com/ For the tab bar images.