ios - 使用 Swift 的 UICollectionView 错误

Question

我收到这个错误，试图在 Swift 中使用 UICollectionView:

NSInternalInconsistencyException', reason: 'attempt to register a cell class which is not a subclass of UICollectionViewCell ((null))

但我想我正在注册单元格:

1. ViewDidLoad:

   override func viewDidLoad()
   {
       super.viewDidLoad()
       self.collectionView.registerClass(NSClassFromString("CollectionCell"),forCellWithReuseIdentifier:"CELL")
   }
   

2. cellForItemAtIndexPath:

   func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath:NSIndexPath)->UICollectionViewCell
   {
      var  cell = collectionView.dequeueReusableCellWithReuseIdentifier("CELL", forIndexPath: indexPath) as CollectionCell
   
       cell.titleLabel.text="cellText"
       return cell
   }
   

和细胞类:

    class CollectionCell: UICollectionViewCell
    {

        @IBOutlet var titleLabel : UILabel
        init(coder aDecoder: NSCoder!)
        {
            super.init(coder: aDecoder)

        } 
     }

感谢任何帮助

Answer 1

您需要以 Swift 样式将 UICollectionViewCell 的子类传递给 registerClass:

self.collectionView.registerClass(CollectionCell.self, forCellWithReuseIdentifier:"CELL")