dataSource更改后动态重新加载UIPageViewController

Question

所以我正在尝试创建一个类似ibooks的阅读器,我需要在从webservice获取数据后动态更新UIPageViewController的内容.由于一系列原因,我必须在开头实例化它,然后在数据到来时更新它.

我正在创建它:

NSDictionary *options =
[NSDictionary dictionaryWithObject:
 [NSNumber numberWithInteger:UIPageViewControllerSpineLocationMin]
                            forKey: UIPageViewControllerOptionSpineLocationKey];

self.pageController = [[UIPageViewController alloc]
                       initWithTransitionStyle:UIPageViewControllerTransitionStylePageCurl
                       navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal
                       options: options];

self.pageController.dataSource = self;
self.pageController.delegate = self;

[[self.pageController view] setFrame:[[self view] bounds]];

MovellaContentViewController *initialViewController = [self viewControllerAtIndex:0];

self.controllers = [NSArray arrayWithObject:initialViewController];

[self.pageController setViewControllers:self.controllers
                              direction:UIPageViewControllerNavigationDirectionForward
                               animated:NO
                             completion:nil];

[self addChildViewController:self.pageController];
[[self view] addSubview:[self.pageController view]];
[self.pageController didMoveToParentViewController:self];

然后我就开始了 self.controllers = newControllersArray;

我正在寻找像UITableViewController的reloadData之类的东西,UIPageViewController有这样的东西吗？

Answer 1

您必须再次向setController发送setViewControllers:direction:animated:completion:并为其显示第一个视图控制器:

[self.pageController setViewControllers:[NSArray arrayWithObject:
                                            [self viewControllerAtIndex:0]
                                        ]
                              direction:UIPageViewControllerNavigationDirectionForward
                               animated:NO
                             completion:nil];

如果viewControllerAtIndex:不像self.controllers我最初假设的那样访问,那么它可能应该是

[self.pageController setViewControllers:[NSArray arrayWithObject:
                                            [self.controllers objectAtIndex:0]
                                        ]
                              direction:UIPageViewControllerNavigationDirectionForward
                               animated:NO
                             completion:nil];

代替

Answer 2

主要问题是 webview 拦截了所有用户触摸，因此 UiPageViewController 没有调用委托方法。一旦将 webview 设置为忽略用户触摸事件，一切就开始正常工作。