ios - 使用Swift的UICollectionView错误

我收到此错误，尝试在Swift中使用UICollectionView:

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

但是我想我正在注册该单元格:

ViewDidLoad:

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

cellForItemAtIndexPath:

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

    cell.titleLabel.text="cellText"
    return cell
}

和单元格类:

    class CollectionCell: UICollectionViewCell
    {

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

        }
     }

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最佳答案

您需要将Swift样式的UICollectionViewCell子类传递给registerClass:

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