Question

I have a UITabBarController with five views, one of which has a UINavigationController within it.

How can I insure that anytime the tab that contains the UINavigationController is selected that it goes to the top view in the UINavigationController?

Answer 1

There is no UITabViewController class. I assume you mean UITabBarController.

Set a delegate for your UITabBarController. Give the delegate a reference to the navigation controller. For example, maybe you will use your application delegate as the tab bar controller’s delegate:

@interface AppDelegate : NSObject <UIApplicationDelegate, UITabBarControllerDelegate>

@property (nonatomic, weak) IBOutlet UINavigationController *theNavigationController;

Make sure you hook up the property, either in your nib or in code.
Then, in the delegate, override the tabBarController:didSelectViewController: method:

@implementation AppDelegate

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController {
    if (viewController == self.theNavigationController) {
        [self.theNavigationController popToRootViewControllerAnimated:NO];
    }
}