UICollectionView Elements That Are Not Displayed After Migration to Swift 2

Question

After migrating my Xcode 6 project to Xcode 7, only the first UICollectionViewin my application will display correctly.

When I switch tabs, CollectionView does not display properly.

The app worked great in iOS 8.

Example:

• Here is the header of the CollectionView in the storyboard.

  

• When I launch my application, I get a blank view.

  

• Interestingly, when I use the View Hierarchy debugger, it shows that the item actually exists.

  

Answer 1

So it seems that ios9 has an error rendering custom cells.

xibs .

viewDidLoad:

self.collectionView.registerNib(UINib(nibName: "SongCell", bundle: NSBundle.mainBundle()), forCellWithReuseIdentifier: "SongCell")

self.collectionView.registerNib(UINib(nibName: "SongHeader", bundle: NSBundle.mainBundle()), forCellWithReuseIdentifier: "SongHeader")

Answer 2

, viewDidLoad .

self.collectionView!.registerClass(YourCustomMemeClass.self, forCellWithReuseIdentifier: "reuseIdentifier")