我试图添加一个包含多个viewControllers的pagecontroller。我首先在interfacebuilder中创建了一个contentView并在其中嵌入了一个pageController。然后我添加了以下代码,但它似乎没有显示任何内容?
let initialViewController = self.viewControllerAtIndex(0)
self.pageViewController?.setViewControllers([initialViewController], direction: .Forward, animated: false, completion: nil)
PAgeViewController Extension
var viewControllerIdentifiers = ["BottomNoLogo", "TopNoLogo"]
extension CameraViewController: UIPageViewControllerDataSource {
func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) -> UIViewController? {
let currentText = viewController.restorationIdentifier
var currentIndex = viewControllerIdentifiers.indexOf(currentText!)
if currentIndex == viewControllerIdentifiers.count - 1 {
return viewControllerAtIndex(0)
} else {
return viewControllerAtIndex(++currentIndex!)
}
}
func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> UIViewController? {
let currentText = viewController.restorationIdentifier
var currentIndex = viewControllerIdentifiers.indexOf(currentText!)
if currentIndex == 0 {
return viewControllerAtIndex(viewControllerIdentifiers.count - 1)
} else {
return viewControllerAtIndex(--currentIndex!)
}
}
func viewControllerAtIndex(index: Int) -> UIViewController {
let contentViewController = storyboard?.instantiateViewControllerWithIdentifier(viewControllerIdentifiers[index])
return contentViewController!
}
}
答案 0 :(得分:-1)
页面视图控制器实际上只提供了点:您仍然需要将控制器的视图添加为父视图的子视图并管理滚动。那里有很多例子。例如,请参阅http://www.appcoda.com/uipageviewcontroller-tutorial-intro/。