Comment faire pour créer un Défilement de l'Affichage avec une page de contrôle de l'utilisation de swift?

import UIKit
class DummyVC: UIViewController, UIScrollViewDelegate {
let scrollView = UIScrollView(frame: CGRect(x:0, y:0, width:320,height: 300))
var colors:[UIColor] = [UIColor.red, UIColor.blue, UIColor.green, UIColor.yellow]
var frame: CGRect = CGRect(x:0, y:0, width:0, height:0)
var pageControl : UIPageControl = UIPageControl(frame: CGRect(x:50,y: 300, width:200, height:50))    
override func viewDidLoad() {
super.viewDidLoad()
configurePageControl()
scrollView.delegate = self
scrollView.isPagingEnabled = true
self.view.addSubview(scrollView)
for index in 0..<4 {
frame.origin.x = self.scrollView.frame.size.width * CGFloat(index)
frame.size = self.scrollView.frame.size
let subView = UIView(frame: frame)
subView.backgroundColor = colors[index]
self.scrollView .addSubview(subView)
}
self.scrollView.contentSize = CGSize(width:self.scrollView.frame.size.width * 4,height: self.scrollView.frame.size.height)
pageControl.addTarget(self, action: #selector(self.changePage(sender:)), for: UIControlEvents.valueChanged)
}
func configurePageControl() {
//The total number of pages that are available is based on how many available colors we have.
        self.pageControl.numberOfPages = colors.count
self.pageControl.currentPage = 0
self.pageControl.tintColor = UIColor.red
self.pageControl.pageIndicatorTintColor = UIColor.black
self.pageControl.currentPageIndicatorTintColor = UIColor.green
self.view.addSubview(pageControl)
}
//MARK : TO CHANGE WHILE CLICKING ON PAGE CONTROL
    func changePage(sender: AnyObject) -> () {
let x = CGFloat(pageControl.currentPage) * scrollView.frame.size.width
scrollView.setContentOffset(CGPoint(x:x, y:0), animated: true)
}
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
let pageNumber = round(scrollView.contentOffset.x / scrollView.frame.size.width)
pageControl.currentPage = Int(pageNumber)
}
}

Swift 3 - Horizontale de l'image de défilement

import UIKit
class pageenabled: UIViewController,UIScrollViewDelegate 
{
let imagelist = ["img1.jpg", "photo1.jpg", "photo3.jpg", "photo4.jpg", "photo5.jpg"]
var scrollView = UIScrollView()
var pageControl : UIPageControl = UIPageControl(frame:CGRect(x: 50, y: 300, width: 200, height: 50))
var yPosition:CGFloat = 0
var scrollViewContentSize:CGFloat=0;
override func viewDidLoad() {
super.viewDidLoad()
scrollView = UIScrollView(frame: CGRect(x: 0, y: 0, width: self.view.frame.width, height: 300))
configurePageControl()
scrollView.delegate = self
self.view.addSubview(scrollView)
for  i in stride(from: 0, to: imagelist.count, by: 1) {
var frame = CGRect.zero
frame.origin.x = self.scrollView.frame.size.width * CGFloat(i)
frame.origin.y = 0
frame.size = self.scrollView.frame.size
self.scrollView.isPagingEnabled = true
let myImage:UIImage = UIImage(named: imagelist[i])!
let myImageView:UIImageView = UIImageView()
myImageView.image = myImage
myImageView.contentMode = UIViewContentMode.scaleAspectFit
myImageView.frame = frame
scrollView.addSubview(myImageView)
}
self.scrollView.contentSize = CGSize(width: self.scrollView.frame.size.width * CGFloat(imagelist.count), height: self.scrollView.frame.size.height)
pageControl.addTarget(self, action: Selector(("changePage:")), for: UIControlEvents.valueChanged)
//Do any additional setup after loading the view.
    }
func configurePageControl() {
//The total number of pages that are available is based on how many available colors we have.
        self.pageControl.numberOfPages = imagelist.count
self.pageControl.currentPage = 0
self.pageControl.tintColor = UIColor.red
self.pageControl.pageIndicatorTintColor = UIColor.black
self.pageControl.currentPageIndicatorTintColor = UIColor.green
self.view.addSubview(pageControl)
}
//MARK : TO CHANGE WHILE CLICKING ON PAGE CONTROL
    func changePage(sender: AnyObject) -> () {
let x = CGFloat(pageControl.currentPage) * scrollView.frame.size.width
scrollView.setContentOffset(CGPoint(x: x,y :0), animated: true)
}
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
let pageNumber = round(scrollView.contentOffset.x / scrollView.frame.size.width)
pageControl.currentPage = Int(pageNumber)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
//Dispose of any resources that can be recreated.
    }
}

       @IBOutlet weak var scrollView: UIScrollView! 
@IBOutlet weak var imageViewBottomConstraint: NSLayoutConstraint!
@IBOutlet weak var imageViewLeadingConstraint: NSLayoutConstraint!
@IBOutlet weak var imageViewTopConstraint: NSLayoutConstraint!
@IBOutlet weak var imageViewTrailingConstraint: NSLayoutConstraint!
extension ZoomedPhotoViewController: UIScrollViewDelegate {
func viewForZoomingInScrollView(scrollView: UIScrollView) -> UIView? {
return imageView
}
}
private func updateMinZoomScaleForSize(size: CGSize) {
let widthScale = size.width / imageView.bounds.width
let heightScale = size.height / imageView.bounds.height
let minScale = min(widthScale, heightScale)  
scrollView.minimumZoomScale = minScale 
scrollView.zoomScale = minScale
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
updateMinZoomScaleForSize(view.bounds.size)
}
private func updateConstraintsForSize(size: CGSize) {   
let yOffset = max(0, (size.height - imageView.frame.height) / 2) 
imageViewTopConstraint.constant = yOffset
imageViewBottomConstraint.constant = yOffset
let xOffset = max(0, (size.width - imageView.frame.width) / 2)
imageViewLeadingConstraint.constant = xOffset
imageViewTrailingConstraint.constant = xOffset
view.layoutIfNeeded()
}
func scrollViewDidZoom(scrollView: UIScrollView) {
updateConstraintsForSize(view.bounds.size) 
}
import UIKit
public class PhotoCommentViewController: UIViewController {  
@IBOutlet weak var imageView: UIImageView!
@IBOutlet weak var scrollView: UIScrollView!
@IBOutlet weak var nameTextField: UITextField!
public var photoName: String!
override public func viewDidLoad() {
super.viewDidLoad()
if let photoName = photoName {
self.imageView.image = UIImage(named: photoName)
}
}
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if let cell = sender as? UICollectionViewCell,
indexPath = collectionView?.indexPathForCell(cell),
photoCommentViewController = segue.destinationViewController as? PhotoCommentViewController {
photoCommentViewController.photoName = "photo\(indexPath.row + 1)"
}
}
NSNotificationCenter.defaultCenter().addObserver(
self,
selector: #selector(PhotoCommentViewController.keyboardWillShow(_:)),
name: UIKeyboardWillShowNotification,
object: nil
)
NSNotificationCenter.defaultCenter().addObserver(
self,
selector: #selector(PhotoCommentViewController.keyboardWillHide(_:)),
name: UIKeyboardWillHideNotification,
object: nil
) 
deinit {
NSNotificationCenter.defaultCenter().removeObserver(self)
}
func adjustInsetForKeyboardShow(show: Bool, notification: NSNotification) {
guard let value = notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue else { return }
let keyboardFrame = value.CGRectValue()
let adjustmentHeight = (CGRectGetHeight(keyboardFrame) + 20) * (show ? 1 : -1)
scrollView.contentInset.bottom += adjustmentHeight
scrollView.scrollIndicatorInsets.bottom += adjustmentHeight
}
func keyboardWillShow(notification: NSNotification) {
adjustInsetForKeyboardShow(true, notification: notification)
}
func keyboardWillHide(notification: NSNotification) {
adjustInsetForKeyboardShow(false, notification: notification)
}  
@IBAction func hideKeyboard(sender: AnyObject) {
nameTextField.endEditing(true)
}
public var photoIndex: Int!
import UIKit
class ManagePageViewController: UIPageViewController {
var photos = ["photo1", "photo2", "photo3", "photo4", "photo5"]
var currentIndex: Int!
override func viewDidLoad() {
super.viewDidLoad()
dataSource = self
//1
    if let viewController = viewPhotoCommentController(currentIndex ?? 0) {
let viewControllers = [viewController]
//2
      setViewControllers(
viewControllers,
direction: .Forward,
animated: false,
completion: nil
)
}
}
func viewPhotoCommentController(index: Int) -> PhotoCommentViewController? {
if let storyboard = storyboard,
page = storyboard.instantiateViewControllerWithIdentifier("PhotoCommentViewController") 
as? PhotoCommentViewController {
page.photoName = photos[index]
page.photoIndex = index
return page
}
return nil
}
}