IPhone SDK: Stuck on Two views apps

I want to create log in app. In log in process I create a UINavigationController to do navigation. After log in, I want to jump to a UITabBarController window.

Therefore I added a UINavigationController *navigationController; and set it as a primary view.

And UINavigationController *navigationController; to handle stuffs after log in.

and I use

UITabBarController *aTabView = [[UITabBarController alloc] initWithNibName:@"TabWindow" bundle:nil];
[self setTabControl开发者_C百科ler:aTabView];
[navigationController.view removeFromSuperview];
[self.window addSubview:[tabController view]];

to change to the content view.

However, it does not show the content of TabWindow.xib

I suggest creating a viewcontroller on itself for the login view, something that subclasses UIViewController

You can then initialize your app with a UINavigationController with the root view of a UITabbarController. Once the view has appeared for the first time (you could just pick whenever you initialize the initial UINavigationController) do this line:

[navController presentModalViewController:[[[LoginViewController alloc] init] autorelease] animated:YES];

and then when the user logs in do (in the LoginViewController class)

[self dismissModalViewControllerAnimated:YES];

And the viewcontroller will hide the nav controller and the tab bar initially but then allow it to be seen after the user logs in!