0
PageViewControllerを作成し、3つのビューコントローラを追加してアプリをウォークスルーしましたが、それらを一度しか表示しないようにしたいのです。ここ現在のウォークスルーシーンは一度しか表示されません
はpageViewControllerのための私のコードです:
import UIKit
class MyPageViewController: UIPageViewController{
override func viewDidLoad() {
super.viewDidLoad()
dataSource = self
// Do any additional setup after loading the view.
if let firstViewController = orderedViewControllers.first {
setViewControllers([firstViewController],
direction: .Forward,
animated: true,
completion: nil)
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//array for the ordered view controllers
private(set) lazy var orderedViewControllers: [UIViewController] = {
return [self.newColoredViewController("First"),
self.newColoredViewController("Second"),
self.newColoredViewController("Third")]
}()
private func newColoredViewController(color: String) -> UIViewController {
return UIStoryboard(name: "Main", bundle: nil) .
instantiateViewControllerWithIdentifier("\(color)ViewController")
}
}
extension MyPageViewController: UIPageViewControllerDataSource {
//returning index of previous view controller
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 nil
}
guard orderedViewControllers.count > previousIndex else {
return nil
}
return orderedViewControllers[previousIndex]
}
//returning index of the next view controller
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 nil
}
guard orderedViewControllersCount > nextIndex else {
return nil
}
return orderedViewControllers[nextIndex]
}
}
どのように私は一度だけ、それを表示するようにコードを編集していますか?
ありがとうございました。 :) –