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];

然后我只设置self.controllers = newControllersArray;

我正在为UITableViewController寻找像reloadData这样的东西，UIPageViewController有这样的东西吗？

Answer 1

你必须再次向setController发送setViewControllers：direction：animated：completion :. 并给它第一个视图控制器来显示：

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

如果viewControllerAtIndex:没有按照我最初的假设访问self.controllers，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。将webview设置为忽略用户触摸事件后，一切都开始正常工作。