如何在最后一个视图控制器被刷新后closures/popupUIPageViewController？

如何在最后一个视图控制器被刷新后closures/popupUIPageViewController？ 基本上要做一个教程式分页视图的图像，并在用户滑到最后的“下一个”页面后closures。

- (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]; } 

Answer 1

这是我用过的简单解决scheme：

在

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

返回index == 5空控制器，并添加这个UIPageViewControllerDelegate方法：

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

Answer 2

在符合UIPageViewControllerDelegate协议的UIPageViewController或viewController中：

 // UIPageViewController.h @interface UIPageViewController @property (nonatomic, assign) NSInteger pageIndex; @end // UIPageViewController.m @implementation UIPageViewController /* ... */ - (void)viewDidLoad { [super viewDidLoad]; // Start with animation from the presenting view/item. UIViewController *singlePageVC = [UIViewController viewControllerWithPageIndex:self.pageIndex]; singlePageVC.view.alpha = 0.0f; if (singlePageVC != nil) { self.dataSource = self; self.delegate = self; // Add singlePageVC to the page view controller with the initial pageIndex. [self setViewControllers:@[ singlePageVC ] direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil]; } } #pragma mark - UIPageViewControllerDelegate - (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController { NSInteger index = singlePageVC.pageIndex; // This will add a page before the current view controller. // Even if the index is 0, a new (dismissing) view controller will be added here. return [UIViewController viewControllerWithPageIndex:index - 1]; } - (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController { NSInteger index = singlePageVC.pageIndex; // This will add a page after the current view controller. // Even if the index is at your array bounds (ie, 5), a new (dismissing) view controller will be added here. return [UIViewController viewControllerWithPageIndex:index + 1]; } /* ... */ @end // UIViewController+PageIndex.h extern NSString * const UIViewControllerShouldDismissFromPageViewControllerNotification; @interface UIViewController (PageIndex) @property (nonatomic, assign) NSInteger pageIndex; - (instancetype)initWithPageIndex:(NSInteger)pageIndex; + (instancetype)viewControllerWithPageIndex:(NSInteger)pageIndex; @end // UIViewController+PageIndex.m NSString * const UIViewControllerShouldDismissFromPageViewControllerNotification = @"UIViewControllerShouldDismissFromPageViewControllerNotification"; @implementation UIViewController (PageIndex) // Initialize with the current item's index. - (instancetype)initWithPageIndex:(NSInteger)pageIndex { self = [super init]; if (self) { _pageIndex = pageIndex; } return self; } + (instancetype)viewControllerWithPageIndex:(NSInteger)pageIndex { return [[self alloc] initWithPageIndex:pageIndex]; } - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; // Check for pageIndex out of bounds of your array. // This will be either less than 0 or greater or equal to your array count. if (self.pageIndex < 0 || self.pageIndex >= array.count) { // Replace with your global or passed array here. // Post dismiss notification here. [[NSNotificationCenter defaultCenter] postNotificationName:UIViewControllerShouldDismissFromPageViewControllerNotification object:nil]; return; } } @end // View controller than manages your UIPageViewController. @implementation YourViewController /* ... */ - (void)viewDidLoad { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(dismissPageViewController:) name:UIViewControllerShouldDismissFromPageViewControllerNotification object:nil]; } - (void)dismissPageViewController:(NSNotification *)notification { // Dismiss your page view controllers here. [self.pageViewController dismissViewController]; self.pageViewController = nil; // Or remove the page view controllers from its parent view controller, [self.pageViewController willMoveToParentViewController:nil]; [self.pageViewController removeFromParentViewController]; [self.pageViewController didMoveToParentViewController:nil]; // Or its view from its super view. [self.pageViewController.view removeFromSuperview]; self.pageViewController = nil; } /* ... */ @end