swift - PageViewController 嵌入在其他 PageViewController 中

Question

我在 ViewController 中创建了一个 PageViewController，如下所示:

主视图 Controller (viewDidLoad())

self.pageViewController = UIPageViewController(transitionStyle: .Scroll, navigationOrientation: .Horizontal, options: nil)
self.pageViewController.dataSource = self
self.pageViewController.delegate = self;
self.pageViewController.view.frame = CGRectMake(0, 100, self.view.frame.size.width, self.view.frame.size.height)
let initialViewController : UIViewController! = viewControllerArray.objectAtIndex(self.currentPageIndex) as! UIViewController
let viewControllers: NSArray? = NSArray(objects: initialViewController)

pageViewController.setViewControllers(viewControllers as? [UIViewController], direction: .Forward, animated:true, completion: nil)

self.addChildViewController(self.pageViewController)
self.view.addSubview(self.pageViewController.view)
self.pageViewController.didMoveToParentViewController(self)
    self.syncScrollView()

一切都很好。此 viewController 捕获方法上的事件

func presentationCountForPageViewController(pageViewController: UIPageViewController) -> Int

我的问题是此 pageViewController 的其中一个页面内部有其他 UIPageViewController，并与其他 UIViewController 相关联。我创建另一个 UIPageViewController 的方式是:

SecondViewController(viewDidLoad())

self.pageNoticiaViewcontroller = UIPageViewController(transitionStyle: .Scroll, navigationOrientation: .Vertical, options: nil)
            self.pageNoticiaViewcontroller.didMoveToParentViewController(self);
    self.pageNoticiaViewcontroller.dataSource = self;
    self.pageNoticiaViewcontroller.delegate = self;

    let startVC = self.getControllerAtIndex(0) as InicioIndividualUIViewController;

    let viewControllers = NSArray(object:  startVC);

    self.pageNoticiaViewcontroller.setViewControllers(viewControllers as? [UIViewController], direction: .Forward, animated: true, completion: nil);

    self.pageNoticiaViewcontroller.view.frame = CGRectMake(0, 0, self.view.frame.width, self.view.frame.height - 40);

    self.addChildViewController(self.pageNoticiaViewcontroller);
    self.view.addSubview(self.pageNoticiaViewcontroller.view);

问题是:

第二个 PageViewController (pageNoticiaViewController) 不调用方法 presentationCountForPageViewController 但它调用方法 presentationCountForPageViewController 父级

我怎样才能对第二个 UIViewController 的方法 presentationConuntForPageViewController 进行第二次 PageViewController 调用，而不是对父方法的调用？非常感谢!

Answer 1

我认为你必须这样尝试:

self.pageViewController.view.tag=0 

self.pageNoticiaViewcontroller.view.tag=1 

并将条件放入数据源和委托(delegate)方法中，如

例子:

 func presentationCountForPageViewController(pageViewController: UIPageViewController) -> Int
{  

if pageController.view.tag == 0
{
     return  yourcount // here self.pageViewController count
}
else
  {
     return  yourcount  // here self.pageNoticiaViewcontroller count
  }
}