我正在尝试UIPageViewController在具有多个视图控制器的Swift应用程序中使用。我的情节提要板（firstViewController和secondViewController）上有2个视图控制器，它们都嵌入各自的导航控制器中。它们具有情节提要标识符“
FirstViewController”和“
SecondViewController”。我在情节提要上还具有一个带有identifierPageView控制器的页面视图控制器，并将导航设置为水平和过渡样式以在属性检查器中滚动。FirstViewController是应用程序的根视图控制器

我想firstViewController成为页面视图控制器的第一页，所以我这样编写了它的类：

import Foundation
import UIKit

class FirsttViewController: UITableViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate  {

    override func viewDidLoad() {

        let pageViewController: PageViewController = self.storyboard.instantiateViewControllerWithIdentifier("PageViewController") as PageViewController

        pageViewController.delegate = self

        var viewControllers: [UIViewController] = [self]

        pageViewController.setViewControllers(viewControllers, direction: UIPageViewControllerNavigationDirection.Forward, animated: false, completion: nil)
        pageViewController.view.frame = CGRectMake(0, 0, self.view.frame.width, self.view.frame.height)

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


    }
    func pageViewController(pageViewController: UIPageViewController!, viewControllerAfterViewController viewController: UIViewController!) -> UIViewController! {


        let secondViewController: SecondViewController = self.storyboard.instantiateViewControllerWithIdentifier("SecondViewController") as SecondViewController


        return secondViewController
    }

    func pageViewController(pageViewController: UIPageViewController!, viewControllerBeforeViewController viewController: UIViewController!) -> UIViewController! {

        return nil
    }

    func presentationCountForPageViewController(pageViewController: UIPageViewController!) -> Int {
        return 2
    }

    func presentationIndexForPageViewController(pageViewController: UIPageViewController!) -> Int {
        return 0
    }
}

的文件SecondViewController如下所示：

import Foundation
import UIKit

class SecondViewController: UITableViewController, UIPageViewControllerDataSource {

    func pageViewController(pageViewController: UIPageViewController!, viewControllerAfterViewController viewController: UIViewController!) -> UIViewController! {

        return nil
    }

    func pageViewController(pageViewController: UIPageViewController!, viewControllerBeforeViewController viewController: UIViewController!) -> UIViewController! {

        let firstViewController: FirstViewController = self.storyboard.instantiateViewControllerWithIdentifier("FirstViewController") as FirstViewController
        return firstViewController
    }

}

但是，当我运行我的应用程序时，它似乎没有页面视图控制器。它只是显示firstViewController而已。没有点，没有页面等。有人知道怎么了吗？我找到了一些Objective-
C教程，但它们都涵盖了对所有页面使用一个视图控制器的问题，并且具有一个不是页面的根视图控制器，pageView因此它们并没有太多帮助。我希望它就像使用一个tabBarController您只需单击并拖动到视图控制器的按钮，但是不幸的是事实并非如此。就像我说过我以前从未与其中之一合作过，所以我有点迷路了。

更新：

根据iiFreeman的建议，我继承了子类UIPageViewController，并将其作为情节提要文件的根。下面是子类

import Foundation
import UIKit
class PageViewController: UIPageViewController {

    override func viewDidLoad() {

        let startingViewController = self.storyboard.instantiateViewControllerWithIdentifier("FirstViewController") as FirstViewController

        self.dataSource = startingViewController
        var viewControllers: [UIViewController] = [startingViewController]

        self.setViewControllers(viewControllers, direction: UIPageViewControllerNavigationDirection.Forward, animated: false, completion: nil)



    }

}

但是，现在该应用程序只是挂在黑屏上，最终Xcode失去了与模拟器的连接。我不太确定怎么回事。