Question

I’ve created a UIViewController subclass called addItemToListViewController. I selected add an “xib” as well, and just created a simple page with a couple of labels and a textField. In the interface builder I selected “Top Bar – Navigation Bar” so that when it is put on the stack when the application runs it will have a top bar that will match the initial main window. In the Interface builder it shows the top border, but when I run the application in the simulator the top bar is not present once the view is displayed.

Here is the code I placed in the rootViewController to present the view controller

- (IBAction)addButtonPressed:(id)sender 
{   
    AddItemToListViewController *addItemToListViewController = [[AddItemToListViewController alloc] initWithNibName: @"AddItemToListViewController" bundle:nil];

    [self presentModalViewController: AddItemToListViewController animated: YES];
    [AddItemToListViewController release];
}

I’m only able to have the top bar present if I manually add a Navigation bar to the xib. If I must add a Navigation bar to my xib, what is the purpose of the “Top Bar” attribute?

Answer 1

- (IBAction)addButtonPressed:(id)sender 
{   
    AddItemToListViewController *addItemToListViewController = [[AddItemToListViewController alloc] initWithNibName: @"AddItemToListViewController" bundle:nil];
    UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:addItemToListViewController];
    [self presentModalViewController: navController animated: YES];
    [AddItemToListViewController release];
    [navController release];
}