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

    // Override point for customization after application launch.

    ViewController *firstVC = [[ViewController alloc] init];

    UINavigationController *naviController = [[UINavigationController alloc] initWithRootViewController:firstVC];

    self.window.rootViewController = naviController;

    self.window.backgroundColor = [UIColor whiteColor];

    [self.window makeKeyAndVisible];

    return YES;

}

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

    // Override point for customization after application launch.

    UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"Main_" bundle:nil];

    ViewController *firstVC = [storyBoard instantiateViewControllerWithIdentifier:@"MainView"];

    UINavigationController *naviController = [[UINavigationController alloc] initWithRootViewController:firstVC];

    self.window.rootViewController = naviController;

    self.window.backgroundColor = [UIColor whiteColor];

    [self.window makeKeyAndVisible];

    return YES;

}