创建水平页面视图控制器的简单方法（无限页面）

1. 让我们创建一个新项目，我选择单视图应用程序来更好地演示

2. 将页面视图控制器拖到故事板上，之后应该更改两件事：
   1. 将页面视图控制器设置为初始视图控制器
   2. 更改过渡样式以滚动

3. 你需要创建一个 UIPageViewController 类，然后将其设置为故事板上的页面视图控制器的自定义类

4. 将此代码粘贴到你的 UIPageViewController 类中，你应该获得一个色彩缤纷的无限分页应用:)

   class PageViewController: UIPageViewController, UIPageViewControllerDataSource {
   
       override func viewDidLoad() {
           self.dataSource = self
           let controller = createViewController()
           self.setViewControllers([controller], direction: .forward, animated: false, completion: nil)
       }
   
       func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
           let controller = createViewController()
           return controller
       }
   
       func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
           let controller = createViewController()
           return controller
       }
   
       func createViewController() -> UIViewController {
           var randomColor: UIColor {
               return UIColor(hue: CGFloat(arc4random_uniform(360))/360, saturation: 0.5, brightness: 0.8, alpha: 1)
           }
           let storyboard = UIStoryboard(name: "Main", bundle: nil)
           let controller = storyboard.instantiateViewController(withIdentifier: "View Controller")
           controller.view.backgroundColor = randomColor
           return controller
       }
   }
   

这是最终项目的样子，每个卷轴都有一个不同颜色的视图控制器：