ios - UIPageViewController 中的离屏页面限制

Question

我想在开始时加载 UIPageViewController 中的所有页面。在 Android 中使用 View 寻呼机的 setOffScreenPageLimit 方法很容易。是否有可能 swift 实现这一目标？

Answer 1

是也不是。您可以一次手动将一个或两个 Controller 传递给您的 UIPageViewController 或实现 UIPageViewControllerDataSource 以在需要时调用和获取 Controller 。

When defining a page view controller interface, you can provide the content view controllers one at a time (or two at a time, depending upon the spine position and double-sided state) or as-needed using a data source. When providing content view controllers one at a time, you use the setViewControllers(_:direction:animated:completion:) method to set the current content view controllers. To support gesture-based navigation, you must provide your view controllers using a data source object. The data source for a page view controller is responsible for providing the content view controllers on demand and must conform to the UIPageViewControllerDataSource protocol. The delegate object—an object that conforms to the UIPageViewControllerDelegate protocol—provides some appearance-related information and receives notifications about gesture-initiated transitions. This class is generally used as-is, but can also be subclassed.

https://developer.apple.com/documentation/uikit/uipageviewcontroller