滑动最后一个视图控制器后，如何关闭/弹出 UIPageViewController? [英] How can I dismiss/pop a UIPageViewController after the last view controller is swiped?

问题描述

如何在滑动最后一个视图控制器后关闭/弹出 UIPageViewController?基本上想用图像制作一个教程风格的分页视图，并在用户从上次滑动到下一个"页面后关闭.

How can I dismiss/pop a UIPageViewController after the last view controller is swiped? Basically want to make a tutorial style paging view with images, and to dismiss after the user swipes to the "next" page from the last.

- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController {

    NSUInteger index = [(EmailTutorialViewController *)viewController index];


    index++;

    if (index == 5) {
        [self.navigationController popViewControllerAnimated:YES]; // this doesn't do anything
        return nil;
    }

    return [self viewControllerAtIndex:index];
}

推荐答案

这是我使用过的简单解决方案:

Here's simple solution I've used:

在

- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController;

为 index == 5 返回空控制器并添加这个 UIPageViewControllerDelegate 方法:

return empty controller for index == 5 and add this UIPageViewControllerDelegate method:

- (void)pageViewController:(UIPageViewController *)pageViewController 
willTransitionToViewControllers:(NSArray *)pendingViewControllers
{
    EmailTutorialViewController *viewController = 
                [pendingViewControllers objectAtIndex:0];
    if ([viewController index] == 5) 
    {
        [self.navigationController popViewControllerAnimated:YES];
    }
}

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