Login (navigation controller + tabbar controller)

 if (![[NSUserDefaults standardUserDefaults] objectForKey:@"is_first_time"])

    {

        [[NSUserDefaults standardUserDefaults] setObject:[NSNumber numberWithBool:YES] forKey:@"is_first_time"];

        

        [[NSUserDefaults standardUserDefaults] setObject:[NSString stringWithFormat:@"0"] forKey:@"is_Login"];

        [[NSUserDefaults standardUserDefaults] setObject:@"" forKey:@"Drinn_deviceToken"];

    }

    NSString *is_Login=[[NSUserDefaults standardUserDefaults] objectForKey:@"is_Login"];

    

    

        if ([is_Login isEqualToString:@"0"])

    {

        self.viewController = [storyboard instantiateViewControllerWithIdentifier:@"ViewController"];

        

        

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

        

        self.window.rootViewController = self.navigationController;

        

        self.navigationController.navigationBar.barTintColor =[ UIColor colorWithRed:212.0/255.0 green:34.0/255.0 blue:75.0/255.0 alpha:1.0];

        self.navigationController.navigationBar.tintColor = [UIColor whiteColor];

    }

    else

    {

        self.viewController = [storyboard instantiateViewControllerWithIdentifier:@"HomePageview"];

        

        

        UITabBarController *myTab = [storyboard instantiateViewControllerWithIdentifier:@"HomePageview"];

        

        self.navigationController=[[UINavigationController alloc] initWithRootViewController:myTab];

        self.navigationController.navigationBar.barTintColor =[ UIColor colorWithRed:212.0/255.0 green:34.0/255.0 blue:75.0/255.0 alpha:1.0];

        self.navigationController.navigationBar.tintColor = [UIColor whiteColor];

        self.window.rootViewController = self.navigationController;

        

    }