是否可以在 UIPageViewController 中以编程方式翻页?

问题描述

UIPageViewController中是否可以通过编程方式翻页?

Is it possible to turn page programmatically in UIPageViewController?

推荐答案

是的，方法是可以的:

- (void)setViewControllers:(NSArray *)viewControllers 
                 direction:(UIPageViewControllerNavigationDirection)direction 
                  animated:(BOOL)animated 
                completion:(void (^)(BOOL finished))completion;`

这与在页面上设置第一个视图控制器的方法相同.类似的，你可以用它去其他页面.

That is the same method used for setting up the first view controller on the page. Similar, you can use it to go to other pages.

想知道为什么 viewControllers 是一个数组，而不是单个视图控制器吗?

Wonder why viewControllers is an array, and not a single view controller?

这是因为页面视图控制器可能有一个脊椎"(就像在 iBooks 中一样)，一次显示 2 页内容.如果您一次显示 1 页内容，则只需传入一个 1 元素数组.

That's because a page view controller could have a "spine" (like in iBooks), displaying 2 pages of content at a time. If you display 1 page of content at a time, then just pass in a 1-element array.

Swift 中的一个例子:

An example in Swift:

pageContainer.setViewControllers([displayThisViewController], direction: .Forward, animated: true, completion: nil)

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