6
UIPageViewControllerDataSource의 viewControllerBeforeViewController 및 viewControllerAfterViewController은 스 와이프 방향을 말하지 않습니다.UIPageViewController에서 사용자가 직접 스 와이프 방향을 지정하십시오.
UIPageViewController 대표의 transitionCompleted도 도움이되지 않습니다. 페이지가 완전히 스 와이프되었는지 여부 만 알려줍니다.
사용자 방향 (왼쪽 또는 오른쪽)을 정확히 감지하려면 어떤 방법을 사용해야합니까?
은 아마이 두 속성은 도움이 될 수let directionForward = UIPageViewControllerNavigationDirection.Forward
let directionReverse = UIPageViewControllerNavigationDirection.Reverse
내 코드는 다음과 같습니다
import UIKit
class ProView: UIViewController, UIPageViewControllerDataSource, UIPageViewControllerDelegate {
var pageViewController: UIPageViewController?
let characterImages = ["character1", "character2", "character1", "character2", "character1", "character2", "character1", "character2"]
override func viewDidLoad() {
super.viewDidLoad()
createPageViewController()
setupPageControl()
character = 1
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
// Forward, check if this IS NOT the last controller
func pageViewController(pageViewController: UIPageViewController,
viewControllerAfterViewController ProView: UIViewController) -> UIViewController? {
let itemController = ProView as PageItemController
// Check if there is another view
if itemController.itemIndex+1 < characterImages.count {
return getItemController(itemController.itemIndex+1)
}
return nil
}
// Check if this IS NOT the first controller
func pageViewController(pageViewController: UIPageViewController,
viewControllerBeforeViewController ProView: UIViewController) -> UIViewController? {
let itemController = ProView as PageItemController
if itemController.itemIndex < 0 {
return getItemController(itemController.itemIndex-1)
}
return nil
}
private func getItemController(itemIndex: Int) -> PageItemController? {
if itemIndex < characterImages.count {
let pageItemController = self.storyboard!.instantiateViewControllerWithIdentifier("ItemController") as PageItemController
pageItemController.itemIndex = itemIndex
pageItemController.imageName = characterImages[itemIndex]
return pageItemController
}
return nil
}
func createPageViewController() {
let pageController = self.storyboard!.instantiateViewControllerWithIdentifier("PageController") as UIPageViewController
pageController.dataSource = self
pageController.delegate = self
if characterImages.count > 0 {
let firstController = getItemController(0)!
let startingViewControllers: NSArray = [firstController]
pageController.setViewControllers(startingViewControllers, direction: UIPageViewControllerNavigationDirection.Forward, animated: false, completion: nil)
}
pageViewController = pageController
addChildViewController(pageViewController!)
self.view.addSubview(pageViewController!.view)
pageViewController?.didMoveToParentViewController(self)
}
func setupPageControl() {
let appearance = UIPageControl.appearance()
appearance.pageIndicatorTintColor = UIColor.grayColor()
appearance.currentPageIndicatorTintColor = UIColor.whiteColor()
}
func presentationCountForPageViewController(pageViewController: UIPageViewController) -> Int {
return characterImages.count
}
func presentationIndexForPageViewController(pageViewController: UIPageViewController) -> Int {
}
// BETA
func pageViewController(PageItemController: UIPageViewController,
didFinishAnimating finished: Bool,
previousViewControllers pageViewController: [AnyObject],
transitionCompleted completed: Bool)
{
if (!completed)
{
// You do nothing because whatever page you thought
// the book was on before the gesture started is still the correct page
return;
}
// This is where you would know the page number changed and handle it appropriately
character = workaround
}
}
class PageItemController: UIViewController {
@IBOutlet weak var imageCharacterChoose: UIImageView!
var itemIndex: Int = 0
var imageName: String = "" {
didSet {
if let imageView = imageCharacterChoose {imageCharacterChoose.image = UIImage(named: imageName)
}
}
}
}
var currentIndex: Int = 0
var nextIndex: Int = 0
func pageViewController(PageItemController: UIPageViewController,
willTransitionToViewControllers pageViewController: [AnyObject]) {
// pageViewController is the pending View Controller
nextIndex = currentIndex
// pageViewController...... how do I get its index?
}
내 질문에 정확하게 답변 해 주셔서 대단히 감사합니다. 보류중인 viewController의 인덱스를 얻는 방법을 설명해 주시겠습니까? "... 보류중인보기 컨트롤러의 itemIndex와 같습니다."라고 말하지만, 어떻게해야하는지에 대한 단서가 있습니다. 대답의 나머지 부분은 분명하고 멋지게 놓여 있습니다 - 다시 한번 감사드립니다! – Cesare
@CeceXX 일부 샘플 코드로 답변을 업데이트했습니다. – pbasdf
나는 단지 당신을 충분히 감사 할 수 없다! – Cesare