ios - 如何使导航 Controller 中的嵌入与scrollView一起使用

Question

我看过这个教程 Snapchat Like Layout using View Controller Theme然后我在导航 Controller 中嵌入了三个 Controller 之一，但它不起作用然后我尝试将它添加到 View Controller 上 ScrollView 怎么也不起作用+给了我重叠我没有在代码中尝试过不过，我不认为这是原因，这是代码

class ViewController: UIViewController {


    @IBOutlet weak var scrollView: UIScrollView!
    override func viewDidLoad() {
        super.viewDidLoad()

        let V1 = self.storyboard?.instantiateViewController(withIdentifier: "V1") as UIViewController!
        self.addChildViewController(V1!)
        self.scrollView.addSubview((V1?.view)!)
        V1?.didMove(toParentViewController: self)
        V1?.view.frame = scrollView.bounds

        let V2 = self.storyboard?.instantiateViewController(withIdentifier: "V2") as UIViewController!
        self.addChildViewController(V2!)
        self.scrollView.addSubview((V2?.view)!)
        V2?.didMove(toParentViewController: self)
        V2?.view.frame = scrollView.bounds

        var V2Frame: CGRect = V2!.view.frame
        V2Frame.origin.x =  self.view.frame.width
        V2?.view.frame = V2Frame

        let V3 = self.storyboard?.instantiateViewController(withIdentifier: "V3") as UIViewController!
        self.addChildViewController(V3!)
        self.scrollView.addSubview((V3?.view)!)
        V3?.didMove(toParentViewController: self)
        V3?.view.frame = scrollView.bounds

        var V3Frame: CGRect = V3!.view.frame
        V3Frame.origin.x = 2 * self.view.frame.width
        V3?.view.frame = V3Frame

        self.scrollView.contentSize = CGSize(width: self.view.frame.width * 3, height: self.view.frame.height)
        self.scrollView.contentOffset = CGPoint(x: self.view.frame.width * 1 , y: self.view.frame.height)

    }

代码是如何工作的？1-首先我将 ScrollView 添加到 View Controller 2-然后在 ScrollView 中我添加了 3 个 View Controller ，并且所有 3 个 Controller 都有自己的类，如普通 View Controller
3- ScrollView 通过顶部的这段代码在其 View 上添加了 3 个 Controller 所有 3 个 Controller 都继承自自己的类，一切都很好如果有人可以提供帮助或需要更多描述，请询问

Answer 1

try below


Create ViewController in Storyboard or XIB and add ScrollView and PageControl

My Class as below:


class ScrollContentViewController: UIViewController, UIScrollViewDelegate {

    @IBOutlet weak var pageControl: UIPageControl!
    @IBOutlet weak var scrollView: UIScrollView!
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }


    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        self.pageControl.currentPage = 0
        self.pageControl.numberOfPages = 4
        var originX = CGFloat(0)
        let width = scrollView.frame.size.width
        let height = scrollView.bounds.size.height
        for x in 0 ..< 4 {
            let V1 = UIViewController()
            self.scrollView.addSubview(V1.view)
            V1.view.frame = CGRect(x: originX, y: 0, width: width, height: height)
            V1.view.backgroundColor = x % 2 == 0 ? UIColor.lightGray : UIColor.darkGray
            self.addChildViewController(V1)
            originX += width
        }
        self.scrollView.contentSize = CGSize(width: originX, height: height)
    }

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

    func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
        let x = Int(scrollView.contentOffset.x / scrollView.frame.size.width)
        self.pageControl.currentPage = x
    }

    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destinationViewController.
        // Pass the selected object to the new view controller.
    }
    */

}