Question

I am creating a tab bar application, but i want to create tab bar controller not in Main.xib by using interface builder. Because my app has no Main.Xib. So I either should do it in ViewController.xib or programmatically in a controller/appdelegate. I couldnt find any good tutorial or example for it.

In my app i have

AppDelegate.h
AppDelegate.m
ViewController.h
ViewController.m
ViewController.xib

My application starts with view of ViewController.xib know i want to add not a tab bar but a tab bar controller which will always stay bottom of views. How can i do that?

appdelagete.h

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];

    return YES;
}

I have tried to do it programatically by looking at apple developer docs but couldnt figure it out.

Thanks in advance for any example code

Answer 1

I found this working great
appdelegate.h

@property (nonatomic, retain) UITabBarController *rootController

appdelegate.m

UIViewController *viewController1 = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
self.rootController = [[[UITabBarController alloc] init] autorelease];
self.rootController.viewControllers = [NSArray arrayWithObjects:viewController1, nil];
self.window.rootViewController = self.rootController;