Question

I have an app with a UITabBar and a NavigationController. When I use pushViewController the new ViewController appears with the NavigationController and the back button, but the UITabBarController disappears. I know there are lots of questions here about the same, but any of them have solved my question, maybe because I dont understand the answers given.

Any suggestion?

    ActivityViewController *activityController = [[ActivityViewController alloc] initWithNibName:@"ActivityViewController" bundle:nil];
    [self.navigationController pushViewController:activityController animated:NO];

Answer 1

That’s probably because Your rootViewController (for your main UIWindow) is set to a Navigationcontroller instead of your TabBar.
If you don’t want the Tabbar to go away just set it as your root view controller

Do the following in appDidFinishLaunching in your AppDelegate

LoginViewController *loginViewController = [[FirstViewController alloc] init];
UINavigationController *loginNavigationController = [[UINavigationController alloc] loginViewController];
[firstViewController release];

self.window.rootViewController = loginNavigationController;

Then in your Login Page:

- (void)loginSuccessfull
{
    FirstViewController *firstViewController = [[FirstViewController alloc] init];
    UINavigationController *firstNavigationController = [[UINavigationController alloc] initWithViewController:firstViewController];
    [firstViewController release];

    SecondViewController *secondViewController = [[SecondViewController alloc] init];
    UINavigationController *secondNavigationController = [[UINavigationController alloc] initWithViewController:secondViewController];
    [secondViewController release];


    UITabBarController *tabBarController = [[UITabBarController alloc] init];
    [tabBarController setViewControllers:
[NSArray arrayWithObjects:firstNavigationController, secondNavigationController, nil]];

    [firstNavigationController release];
    [secondNavigationController release];

    [self.navigationController pushViewController:tabBarController];
    [tabBarController release];

}

If you still need the navigation functionality just wrap your viewControllers inside a UINavigationController, and add the serounding navigationController to the tabBar, instead of the UIViewcontroller