for navigation use in application

AppDelegate .h

@interface AppDelegate : UIResponder <UIApplicationDelegate>

{

    UINavigationController *navcontroller;

    

}

@property (strong, nonatomic) UIWindow *window;

@property (strong, nonatomic) HomeViewController   *viewController;

@property (nonatomic,retain)UINavigationController *navcontroller;

AppDelegate.m

- (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 = [[[HomeViewController alloc] initWithNibName:@"HomeViewController" bundle:nil] autorelease];

    self.navcontroller=[[UINavigationController alloc]initWithRootViewController:viewController];

    [self.window addSubview:self.navcontroller.view];

    [self.window makeKeyAndVisible];

    return YES;

}