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你好新來swift/iphone開發，任何意見表示讚賞！頁面視圖控制器不轉換它的編碼風格
製作由3頁，但是使用.pageTurn風格 - 當過渡樣式設置在我的代碼.scroll視圖控制器過渡一個簡單的基於網頁的應用程序
讓的PageController =視圖控制器（transitionStyle： .scroll，navigationOrientation：.horizontal，options：nil）
非常困惑爲什麼過渡樣式不符合我編碼的內容？
全碼：
let pageController = ViewController(transitionStyle: .scroll, navigationOrientation: .horizontal, options: nil)
class ViewController: UIPageViewController {
// page view controllers here
let cardsVC: UIViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "CardsNavController")
let profileVC: UIViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "ProfileNavController")
let matchesVC: UIViewController! = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "MatchesNavController")
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = UIColor.white
dataSource = self
// loads first view
setViewControllers([profileVC], direction: .forward, animated: true, completion: nil)
}
// load left view
func goToNextVC() {
let nextVC = pageViewController(self, viewControllerAfter: viewControllers![0])!
setViewControllers([nextVC], direction: .forward, animated: true, completion: nil)
}
// load right view
func goToPreviousVC() {
let previousVC = pageViewController(self, viewControllerBefore: viewControllers![0])!
setViewControllers([previousVC], direction: .reverse, animated: true, completion: nil)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
// MARK - UIPageViewControllerDataSource
extension ViewController: UIPageViewControllerDataSource {
func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
// navigate right
switch viewController {
case cardsVC:
return profileVC
case profileVC:
return nil
case matchesVC:
return cardsVC
default:
return nil
}
}
// navigate left
func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
switch viewController {
case cardsVC:
return matchesVC
case profileVC:
return cardsVC
case matchesVC:
return nil
default:
return nil
}
}
}
