ডেমো কোডের নীচে (সুইফ্ট 2 তে) যা দেখায় যে এটি কীভাবে একটি সাধারণ চিত্র স্বেপার টিউটোরিয়াল প্রয়োগ করে করা হয়। কোড নিজেই মন্তব্য:
import UIKit
class VCTutorialImagePage : UIViewController {
@IBOutlet weak var imageView: UIImageView!
var pageIndex : Int = 0
static func loadView(pageIndex : Int, image : UIImage) -> VCTutorialImagePage {
let storyboard = UIStoryboard(name: storyBoardHome, bundle: nil)
let vc = storyboard.instantiateViewControllerWithIdentifier("VCTutorialImagePage") as! VCTutorialImagePage
vc.imageView.image = image
vc.pageIndex = pageIndex
return vc
}
}
class VCTutorialImageSwiper: UIPageViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate {
let tutorialImages : [UIImage] = [UIImage(named: "image1")!, UIImage(named: "image2")!,UIImage(named: "image3")!,UIImage(named: "image4")!]
private var currentPageIndex : Int = 0 {
didSet {
currentPageIndex=cap(currentPageIndex)
}
}
private var nextPageIndex : Int = 0
override func viewDidLoad() {
super.viewDidLoad()
dataSource=self
delegate=self
setViewControllers([pageForindex(0)!], direction: .Forward, animated: false, completion: nil)
}
func cap(pageIndex : Int) -> Int{
if pageIndex > (tutorialImages.count - 1) {
return 0
}
if pageIndex < 0 {
return (tutorialImages.count - 1)
}
return pageIndex
}
func carrouselJump() {
currentPageIndex++
setViewControllers([self.pageForindex(currentPageIndex)!], direction: .Forward, animated: true, completion: nil)
}
func pageForindex(pageIndex : Int) -> UIViewController? {
guard (pageIndex < tutorialImages.count) && (pageIndex>=0) else { return nil }
return VCTutorialImagePage.loadView(pageIndex, image: tutorialImages[pageIndex])
}
func indexForPage(vc : UIViewController) -> Int {
guard let vc = vc as? VCTutorialImagePage else {
preconditionFailure("VCPagImageSlidesTutorial page is not a VCTutorialImagePage")
}
return vc.pageIndex
}
func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) -> UIViewController? {
return pageForindex(cap(indexForPage(viewController)+1))
}
func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? {
return pageForindex(cap(indexForPage(viewController)-1))
}
func pageViewController(pageViewController: UIPageViewController, willTransitionToViewControllers pendingViewControllers: [UIViewController]) {
nextPageIndex = indexForPage(pendingViewControllers.first!)
}
func pageViewController(pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool) {
if !finished { return }
currentPageIndex = nextPageIndex
}
func presentationCountForPageViewController(pageViewController: UIPageViewController) -> Int {
return tutorialImages.count
}
func presentationIndexForPageViewController(pageViewController: UIPageViewController) -> Int {
return currentPageIndex
}
}
viewDidAppear:animated:পরিবর্তে ব্যবহার করার চেষ্টা করেছেন ?