嵌入在 containerView 中的 PageViewController 显示前一个视图的小边距

Posted 2023-03-14

【中文标题】嵌入在 containerView 中的 PageViewController 显示前一个视图的小边距

【英文标题】：PageViewController embedded in containerView shows small margin of previous view

【发布时间】：2016-01-19 14:42:32

【问题描述】：

我创建了一个带有 containerView 的 viewController，我在其中嵌入了 pageViewController。在这个 pageController 中，我在里面添加了 3 个 viewController。这似乎工作正常，但是每次我滑动到下一个视图时，它似乎在前一个视图的一侧显示了一点边距。这是什么原因造成的？

ViewDidLoad

    if let firstViewController = orderedViewControllers.first 
        self.pageViewController?.setViewControllers([firstViewController],
            direction: .Forward,
            animated: true,
            completion: nil)
    

newViewController

func newViewController(view: String) -> UIViewController 
    return UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier(view)

PageControllerDelegate

extension CameraViewController: UIPageViewControllerDataSource 
    func pageViewController(pageViewController: UIPageViewController,
        viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? 
            guard let viewControllerIndex = orderedViewControllers.indexOf(viewController) else 
                return nil
            

            let previousIndex = viewControllerIndex - 1

            // User is on the first view controller and swiped left to loop to
            // the last view controller.
            guard previousIndex >= 0 else 
                return orderedViewControllers.last
            

            guard orderedViewControllers.count > previousIndex else 
                return nil
            

            return orderedViewControllers[previousIndex]
    

    func pageViewController(pageViewController: UIPageViewController,
        viewControllerAfterViewController viewController: UIViewController) -> UIViewController? 
            guard let viewControllerIndex = orderedViewControllers.indexOf(viewController) else 
                return nil
            

            let nextIndex = viewControllerIndex + 1
            let orderedViewControllersCount = orderedViewControllers.count

            // User is on the last view controller and swiped right to loop to
            // the first view controller.
            guard orderedViewControllersCount != nextIndex else 
                return orderedViewControllers.first
            

            guard orderedViewControllersCount > nextIndex else 
                return nil
            

            return orderedViewControllers[nextIndex]
    

【参考方案1】：

您可能谈到了页面间距。您可以在情节提要中对其进行编辑。选择您的页面视图控制器，然后打开属性检查器。会有相应的部分：