在Swift中將UIPageViewController的邏輯實現為UIViewController的子視圖

Question

我必須實現UIPageViewController作為UIViewController的子視圖。 UIPageViewController內部有一些邏輯和其他ViewController。 我的問題是如何連接下面的這兩段代碼。

所以這是我的主要UIViewController代碼：

class MyMainViewController: UIViewController {

    override func viewDidLoad() {
       super.viewDidLoad()
    }
    override func didReceiveMemoryWarning() {
       super.didReceiveMemoryWarning()
    }   
}

和我的UIPageViewController代碼，該代碼在他包含的ViewController之間實現了一個無限循環（我復制了整個代碼，可能沒有必要）：

class TutorialPageViewController: UIPageViewController {

    private(set) lazy var orderedViewControllers: [UIViewController] = {
        return [self.newColoredViewController("Green"),
                self.newColoredViewController("Red"),
                self.newColoredViewController("Blue")]
    }()

    override func viewDidLoad() {
        super.viewDidLoad()

        dataSource = self

        if let firstViewController = orderedViewControllers.first {
            setViewControllers([firstViewController],
                direction: .Forward,
                animated: true,
                completion: nil)
        }
    }

    private func newColoredViewController(color: String) -> UIViewController {
        return UIStoryboard(name: "Main", bundle: nil) .
        instantiateViewControllerWithIdentifier("\(color)ViewController")
    }

}

extension TutorialPageViewController: UIPageViewControllerDataSource {

    func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? {
        guard let viewControllerIndex = orderedViewControllers.indexOf(viewController) else {
            return nil
        }

        let previousIndex = viewControllerIndex - 1
        guard previousIndex >= 0 else {
            return orderedViewControllers.last
        }
        guard orderedViewControllers.count > previousIndex else {
            return nil
        }
        return orderedViewControllers[previousIndex]
    }

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

        guard let viewControllerIndex = orderedViewControllers.indexOf(viewController) else {
            return nil
        }

        let nextIndex = viewControllerIndex + 1
        let orderedViewControllersCount = orderedViewControllers.count

        guard orderedViewControllersCount != nextIndex else {
            return orderedViewControllers.first
        }

        guard orderedViewControllersCount > nextIndex else {
            return nil
        }

        return orderedViewControllers[nextIndex]
    }

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

    func presentationIndexForPageViewController(pageViewController: UIPageViewController) -> Int {
        guard let firstViewController = viewControllers?.first,
        firstViewControllerIndex = orderedViewControllers.indexOf(firstViewController) else {
            return 0
        }

        return firstViewControllerIndex
    }

}

Answer 1

在布置MyMainViewController和TutorialPageViewController的情節MyMainViewController ，您需要向MyMainViewController添加一個容器視圖，然后使用Embed segue嵌入TutorialPageViewController 。

顯示MyMainViewController ，它現在還將自動插入您的教程視圖。