[英]UIPageViewController delegate/datasource methods not firing
我有這樣的設置:
UIWindow
> UIViewController
> UIPageViewController
> UIViewController
我已經將UIPageViewController
的委托和數據源設置為UIViewController
內部的self
,但是,每次嘗試用數據更新UIPageViewController
時,它只會顯示一個圖像。 我將父UIViewController
的框架從小到大按比例縮放,也許正在影響它? 我在別處實際上沒有在UIWindow
中使用相同的代碼,並且可以正常工作。 關於UIWindow
有什么嗎?
任何幫助,將不勝感激!
- 編輯 -
好的,更多信息。 我從用戶選擇表視圖單元格時開始調用它。 首先,我創建一個新的UIWindow
,其大小與當前的主UIWindow
相同,但位於狀態欄的頂部。 然后,我從情節UIPageViewController
板上創建一個ExpandedViewController
,將其設置為與UITableViewCell
相同的框架大小,為其提供一些圖像以加載到UIPageViewController
,然后告訴它重新加載其數據。 我還調整了UIPageViewController的視圖控制器內部的UIImageView
的中心,稍后可以對其進行動畫處理,但這無關緊要。 然后,將ExpandedViewController
的視圖添加到UIWindow
。 這就是代碼中的內容:
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()
方法中具有以下代碼:
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)
我通過更換解決了
newWindow.addSubview(expandedViewController.view)
與
newWindow.rootViewController = expandedViewController
事實證明.rootViewController
是向UIWindow
添加視圖的推薦方法
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