在我的swift iOS应用程序中,我将创建一个包含两个视图的故事板。我想使用页面视图控制器元素,因此,通过左/右滑动,用户可以更改实际视图。我怎么能这样做?
重要!我已经多次搜索网页上的教程。我只找到了允许在同一图像视图中更改图像的模式。我不想在同一视图中更改同一图像中的图像;我想改变整个视图。我附上一张图片,以便更好地解释。
提前感谢] 1
答案 0 :(得分:3)
这解释了如何使用storyboard创建分页视图控制器:
UIPageViewController
子类 - 比如称之为TutorialPageViewController
并将其分配给刚刚拖入故事板的对象。Storyboard ID
,例如RedViewController
& GreenViewController
。TutorialPageViewController
中
并在滑动时显示正确的视图控制器:TutorialPageViewController:
class TutorialPageViewController: UIPageViewController, UIPageViewControllerDataSource {
private(set) lazy var orderedViewControllers: [UIViewController] = {
return [self.newColoredViewController("RedViewController"),
self.newColoredViewController("GreenViewController")]
}()
private func newColoredViewController(color: String) -> UIViewController {
return UIStoryboard(name: "Main", bundle: nil) .
instantiateViewControllerWithIdentifier("\(color)ViewController")
}
override func viewDidLoad() {
super.viewDidLoad()
dataSource = self
if let firstViewController = orderedViewControllers.first {
setViewControllers([firstViewController],
direction: .Forward,
animated: true,
completion: nil)
}
}
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]
}
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]
}
}
有关详细信息和相关教程,请参阅文章。
https://spin.atomicobject.com/2015/12/23/swift-uipageviewcontroller-tutorial/
更新:Page Dots
从第7部分的第7点开始阅读,该文章展示了如何添加UIPageControl并在滑动时更改点:
https://spin.atomicobject.com/2016/02/11/move-uipageviewcontroller-dots/
@IBOutlet weak var pageControl: UIPageControl!
func tutorialPageViewController(tutorialPageViewController: TutorialPageViewController,
didUpdatePageCount count: Int) {
pageControl.numberOfPages = count
}
func tutorialPageViewController(tutorialPageViewController: TutorialPageViewController,
didUpdatePageIndex index: Int) {
pageControl.currentPage = index
}