未调用 UIPageViewController 委托方法 [英] UIPageViewController delegate method not called

问题描述

在我的应用程序中，我有一个 RootViewController (UIPageViewController)、一个 FirstController (UIViewController) 和一个 SecondController (UIViewController).两个 UIViewControllers 中的两个视图在 RootViewController 上滚动.

In my application I have a RootViewController (UIPageViewController), a FirstController (UIViewController) and a SecondController (UIViewController). The two views inside the two UIViewControllers scroll over the RootViewController.

在我的 RootViewController.h 中:

In my RootViewController.h:

@interface RootController : UIPageViewController <UIPageViewControllerDataSource, UIPageViewControllerDelegate>

但是当我在不同的视图之间滚动时，委托方法如下:

But when I scroll between different views delegate methods like:

-(void) pageViewController:(UIPageViewController *)pageViewController didFinishAnimating:(BOOL)finished previousViewControllers:(NSArray *)previousViewControllers transitionCompleted:(BOOL)completed

没有被调用.为什么?有人能帮我吗?提前致谢.

are not called. Why? Can someone help me? Thank you in advance.

推荐答案

您是否将 rootViewController(无论您想接收委托调用的控制器/对象)指定为 UIPageViewController 的委托/数据源吗?

Did you assign rootViewController (whichever controller/object you want to receive the delegate calls) to be the delegate/datasource of the UIPageViewController?

pageViewController.delegate = rootViewController;
pageViewController.dataSource = rootViewController;

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