Question

This is what I am doing. I have a tabBarControllerOne with 5 tabs. On clicking one of the tabs, I present a modal view controller, which has a navigationBar and a TabBarControllerTwo (with 3 tabs). These three tabs are the matter for concern here.

In the 5th Tab of tabBarController I show modalViewController as

UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:self.nextTabView];
  //  navController.navigationBarHidden = YES;


navController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;

NSLog(@"Displauing the navcontroller before pushing %@", navController);

[self presentModalViewController:navController animated:NO];

Here, nextTabView is a tabBarController with 3 tabs. The views work. In the views, if I try something like.

self.navigationController.navigationBarHidden = YES;
[self.navigationController pushViewController: someController animated:YES];


// nothing works.

If I NSLog, it displays self.navigationController as (null)

Can someone tell me why this is not working ?

Answer 1

Embedding a UITabBarController inside a UINavigationController is not supported. Apple has a careful hierarchy of container view controllers, and a UITabBarController must be the root of its view controller hierarchy.

Additionally, as Joe points out, your views don’t belong to the navigation controller; they belong to the tab bar controller, so their navigationController property is not set.