ios - 从集合中关闭最后一个 View 中的 PopViewController

Question

我开发了一个应用程序，它的第一个 View 带有“开始”按钮。当我按下按钮时，我启动了 PageViewController。我需要的是，在集合的最后一项中，5 秒后，使用“开始”按钮返回到第一个 View 。我尝试使用 self.dismissViewControllerAnimated 但它没有用。

当我点击“开始”按钮时，我调用了一个带有标识符的 Nib :

 self.performSegueWithIdentifier("goToViewController", sender: nil)

这个 nib 分配了一个自定义类:

在这个类中，我开发了 PageViewController 的行为，我在其中配置 PageViewController 内容，如 StoryboardID:

import UIKit
import AVFoundation

class PageViewController: UIViewController, UIPageViewControllerDataSource {

    var audioPagePlayer = AVAudioPlayer()
    var error: NSError?
    var audioPage = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("Turn page", ofType: "mp3")!)
    var contentPageRestorationIDs = [String]()
    var pageViewController = UIPageViewController()

    override func viewDidLoad() {
        super.viewDidLoad()

        audioPagePlayer = AVAudioPlayer(contentsOfURL: audioPage, error: &error)

        contentPageRestorationIDs = ["FirstView", "SecondView", "ThirdView", "FourthView", "FiveView", "SixView", "SevenView", "EightView", "NineView", "TenView", "ElevenView", "TwelveView", "ThirteenView", "FourteenView"]
        // Do any additional setup after loading the view, typically from a nib.

        pageViewController = self.storyboard?.instantiateViewControllerWithIdentifier("PageViewController") as UIPageViewController
        pageViewController.dataSource = self

        var startingController: UIViewController = self.viewControllerAtIndex(0)!

        pageViewController.setViewControllers([startingController], direction: UIPageViewControllerNavigationDirection.Forward, animated: true, completion: nil)

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


    }

    func goToPreviousContentViewController(){

        var currentViewController: AnyObject = self.pageViewController.viewControllers[0]
        var vcRestorationID = currentViewController.restorationIdentifier
        var index = find(contentPageRestorationIDs, vcRestorationID!!)

        var previousViewController: UIViewController = self.viewControllerAtIndex(index! - 1)!

        pageViewController.setViewControllers([previousViewController], direction: UIPageViewControllerNavigationDirection.Reverse, animated: false, completion: nil)



    }

    func goToNextContentViewController(){

        var currentViewController: AnyObject = self.pageViewController.viewControllers[0]
        var vcRestorationID = currentViewController.restorationIdentifier
        var index = find(contentPageRestorationIDs, vcRestorationID!!)

        var nextViewController: UIViewController = self.viewControllerAtIndex(index! - 1)!

        pageViewController.setViewControllers([nextViewController], direction: UIPageViewControllerNavigationDirection.Forward, animated: false, completion: nil)



    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> (UIViewController?){
        var vcRestorationID = viewController.restorationIdentifier
        var index = find(contentPageRestorationIDs, vcRestorationID!)

        if(index == 0){
            return nil
        }

        audioPagePlayer.prepareToPlay()
        audioPagePlayer.play()


        return viewControllerAtIndex(index! - 1)
    }

    func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) -> (UIViewController?){
        var vcRestorationID = viewController.restorationIdentifier
        var index = find(contentPageRestorationIDs, vcRestorationID!)

        if(index == contentPageRestorationIDs.count - 1){
            return nil
        }

        var vc = viewController as BaseContentViewController

        if(vc.goNext == true){

            audioPagePlayer.prepareToPlay()
            audioPagePlayer.play()

            return viewControllerAtIndex(index! + 1)

        }
        return nil
    }


    func presentationCountForPageViewController(pageViewController: UIPageViewController) -> (Int){
        return self.contentPageRestorationIDs.count
    }

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


    func viewControllerAtIndex(index: Int)-> (BaseContentViewController!) {

        if(index >= contentPageRestorationIDs.count){
            return nil
        }

        var storyboard: UIStoryboard = UIStoryboard(name: "Main", bundle: NSBundle(forClass: self.dynamicType))

        var contentViewController: BaseContentViewController = storyboard.instantiateViewControllerWithIdentifier(self.contentPageRestorationIDs[index]) as BaseContentViewController

        contentViewController.rootViewController = self

        contentViewController.loadView()

        return contentViewController

    }
}

每个 nib 的 View Controller 都从自定义类 BaseContentViewController 扩展:

import UIKit

class BaseContentViewController: UIViewController {

    var rootViewController: PageViewController = PageViewController()
    var goNext = Bool()


    override func viewDidLoad() {
        super.viewDidLoad()

        println("View Did Load Form Base Content View Controller")
        // Do any additional setup after loading the view.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }



}

当我在 StoryboardID 为“FourteenView”的 View 中时，5 秒后，我需要返回到 PageViewController 之前的 View

Answer 1

您是如何显示 PageViewController 的？如果你正在插入它，那么你必须弹出它，如果你将它作为模型呈现，那么使用 dismissViewControllerAnimated!!