[英]UIPageViewController delegate/datasource methods not firing
我有这样的设置:
UIWindow
> UIViewController
> UIPageViewController
> UIViewController
我已经将UIPageViewController
的委托和数据源设置为UIViewController
内部的self
,但是,每次尝试用数据更新UIPageViewController
时,它只会显示一个图像。 我将父UIViewController
的框架从小到大按比例缩放,也许正在影响它? 我在别处实际上没有在UIWindow
中使用相同的代码,并且可以正常工作。 关于UIWindow
有什么吗?
任何帮助,将不胜感激!
- 编辑 -
好的,更多信息。 我从用户选择表视图单元格时开始调用它。 首先,我创建一个新的UIWindow
,其大小与当前的主UIWindow
相同,但位于状态栏的顶部。 然后,我从情节UIPageViewController
板上创建一个ExpandedViewController
,将其设置为与UITableViewCell
相同的框架大小,为其提供一些图像以加载到UIPageViewController
,然后告诉它重新加载其数据。 我还调整了UIPageViewController的视图控制器内部的UIImageView
的中心,稍后可以对其进行动画处理,但这无关紧要。 然后,将ExpandedViewController
的视图添加到UIWindow
。 这就是代码中的内容:
let cell = tableView.dequeueReusableCellWithIdentifier("aCell", forIndexPath: indexPath) as! ContentTableCell
var cellRect = tableView.rectForRowAtIndexPath(indexPath)
var convertedFrame = tableView.convertRect(cellRect, toView: UIApplication.sharedApplication().keyWindow!)
newWindow = UIWindow(frame: self.view.window!.bounds)
newWindow.hidden = false
newWindow.windowLevel = (UIWindowLevelStatusBar + 1)
var expandedViewController = self.storyboard!.instantiateViewControllerWithIdentifier("ExpandedViewController")! as! ExpandedViewController
expandedViewController.view.frame = convertedFrame
expandedViewController.pageImages = imagesForTableView
expandedViewController.reloadData(indexPath.row)
var expandedContentViewController = (expandedViewController.pageViewController.viewControllers.last! as! ExpandedContentViewController)
expandedContentViewController.imageView.frame = self.view.frame
expandedContentViewController.imageView.center = CGPointMake(cellRect.width/2, cellRect.height/2 + 5)
newWindow.backgroundColor = UIColor(red: 30/255, green: 1/255, blue: 42/255, alpha: 1)
newWindow.addSubview(expandedViewController.view)
newWindow.makeKeyAndVisible()
ExpandedViewController
在其ViewDidLoad()
方法中具有以下代码:
self.view.clipsToBounds = true
pageImages = []
// Initialise the Page View Controller from storyboard. Set ourselves as delegate and datasource to it.
pageViewController = storyboard!.instantiateViewControllerWithIdentifier("ExpandedPageViewController")! as! UIPageViewController
pageViewController.dataSource = self
pageViewController.delegate = self
// Get the View Controller for the first page of the Page View Controller and store in an array
if let startingViewController: ExpandedContentViewController = viewControllerAtIndex(0) {
let viewControllers: NSArray = [startingViewController]
// Set the first page of the Page View Controller
pageViewController.setViewControllers(viewControllers as [AnyObject], direction: .Forward, animated: false, completion: nil)
}
// Make sure the Page View Controller takes up full area of screen
pageViewController.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)
// Add the Page View Controller to current view
self.addChildViewController(pageViewController)
self.view.addSubview(pageViewController.view)
self.pageViewController.didMoveToParentViewController(self)
我通过更换解决了
newWindow.addSubview(expandedViewController.view)
与
newWindow.rootViewController = expandedViewController
事实证明.rootViewController
是向UIWindow
添加视图的推荐方法
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