0
我有一個工作UIPageViewController保存嵌入UINavigationController多個UIViewControllers每個UIViewController具有圖像陣列的預覽至極，打開時，實例化一個新UIPageViewController來顯示這些圖像BAD_ACCESS上UIPageViewController
時我通過圖像刷卡，然後輕掃回用「EXC_BAD_ACCESS(code=EXC_I386_GPFLT)」同樣的事情，第一個我的應用程序崩潰時我使用的UINavigationController
後退按鈕這是爲什麼，我該如何解決這一問題？
我PageViewController（標記行最後一個我在調試器中得到了崩潰前）：
class DetailPageMasterViewController: UIPageViewController, UIPageViewControllerDelegate, UIPageViewControllerDataSource
{
var presentationPageIndex: Int = 0
var itemsArray = [Aktion]()
var pageViewController: UIPageViewController!
@IBOutlet weak var btnEditOutlet: UIBarButtonItem!
@IBAction func btnEditAction(sender: AnyObject)
{
}
override func viewDidLoad()
{
super.viewDidLoad()
self.pageViewController = UIPageViewController.init(transitionStyle: .Scroll,
navigationOrientation: .Horizontal,
options: nil)
self.pageViewController.delegate = self
self.pageViewController.dataSource = self
self.presentationPageIndex = 0
let firstVC = self.viewControllerAtIndex(presentationPageIndex)
let viewControllers = [firstVC]
self.pageViewController.setViewControllers(viewControllers,
direction: .Forward,
animated: false,
completion: nil)
self.addChildViewController(self.pageViewController)
self.view.addSubview(self.pageViewController.view)
self.pageViewController.didMoveToParentViewController(self)
self.setupPageControl()
}
func pageViewController(pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool)
{
if completed
{
let minionVC = self.pageViewController.viewControllers?.last as! DetailMinionViewController
presentationPageIndex = minionVC.pageIndex
}
}
func viewControllerAtIndex(index: Int) -> DetailMinionViewController
{
let contentVC = self.storyboard?.instantiateViewControllerWithIdentifier("MinionPageViewController") as! DetailMinionViewController
contentVC.aktion = itemsArray[index]
contentVC.pageIndex = index
return contentVC
}
func pageViewController(pageViewController: UIPageViewController, viewControllerBeforeViewController viewController: UIViewController) -> UIViewController?
{
if let viewController = viewController as? DetailMinionViewController
{
var index = viewController.pageIndex
if index == 0 || index == NSNotFound
{
return nil //MARKED LINE
}
index -= 1
return self.viewControllerAtIndex(index)
}
return nil
}
func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) -> UIViewController?
{
if let viewController = viewController as? DetailMinionViewController
{
var index = viewController.pageIndex
if index == NSNotFound
{
return nil
}
index += 1
if index == NSNotFound || index >= itemsArray.count
{
return nil
}
return self.viewControllerAtIndex(index)
}
return nil
}
func presentationCountForPageViewController(pageViewController: UIPageViewController) -> Int
{
return itemsArray.count
}
func presentationIndexForPageViewController(pageViewController: UIPageViewController) -> Int
{
return presentationPageIndex
}
func setupPageControl()
{
UIPageControl.appearance().backgroundColor = UIColor.clearColor()
UIPageControl.appearance().pageIndicatorTintColor = UIColor.whiteColor()
UIPageControl.appearance().currentPageIndicatorTintColor = UIColor.redColor()
}
}
所以結構看起來像
UINavigationController - >DetailPageMasterViewController - >DetailMinionViewController - >PicturesPageMasterViewController - >PicturesMinionViewController
後用線，在應用程序崩潰的代碼這將是有益的。 – pedrouan
也添加一些代碼。 –
現在在if if index == 0 ||之前添加了代碼 – Tobi