No mainwindow.xib in Xcode 4 Vaguely how to get my TabBarController to use NavigationController

Question

It was pretty easy in Xcode 3. But I was completely lost in Xcode 4. * It seems that IB is not used at all. And all the code of TabBarController is in the code.

Question: How to add the NavigationBarController element to the default code that Xcode generates when using the TabBarController template?

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// Override point for customization after application launch.

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

UIViewController *viewController1 = [[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil];

UIViewController *viewController2 = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];

self.tabBarController = [[UITabBarController alloc] init];

self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, nil];

self.window.rootViewController = self.tabBarController;

[self.window makeKeyAndVisible];

return YES;

}

Answer 1

As already mentioned, you can add a file xibto configure the application to use it. Here is the version of the code, if you decide to go along this route, it is always better to know in any case

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:    (NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    UIViewController *viewController1 = [[FirstViewController alloc] init];
    UINavigationController *navigationController1 = [[UINavigationController alloc] initWithRootViewController:viewController1];
    [viewController1 release]; viewController1 = nil;

    UIViewController *viewController2 = [[SecondViewController alloc] init];
    UINavigationController *navigationController2 = [[UINavigationController alloc] initWithRootViewController:viewController2];
    [viewController2 release]; viewController2 = nil;

    self.tabBarController = [[UITabBarController alloc] init];

    NSArray *viewController = [[NSArray alloc] initWithObjects:navigationController1, navigationController2, nil];
    [navigationController1 release]; navigationController1 = nil;
    [navigationController2 release]; navigationController2 = nil;

    self.tabBarController.viewControllers = viewControllers;
    [viewControllers release]; viewControllers = nil;

    self.window.rootViewController = self.tabBarController;

    [self.window makeKeyAndVisible];

    return YES;
}

It is written in the browser, but it should work.

Answer 2

MainWindow.xib( → ), Info.plist " " "MainWindow" ".

UINavigationController IBOutlets , . MainWindow.xib , UINavigationController . UINavigationController Window .