标签出口在自定义UICollectionViewCell在Swift导致可选.没有崩溃

安慰

fatal error: Can’t unwrap Optional.None

窗口

Thread1: EXC_BAD_INSTRUCTION(code=EXC_1386_INVOP,subcode=0x0)

我正在尝试访问标签：

cell.name.text = names[indexPath!.item]

也许这是从我的出口标签是零？但是看看周围的答案没有任何工作,因为我不确定什么问题添加？/！在我的代码中并没有真正的帮助.

MyCustomUICollectionViewController

class ScrambledTextCollectionViewController: UICollectionViewController {

    var names: String[] = ["Anna","Alex","Brian","Jack"]

    override func viewDidLoad() {
        super.viewDidLoad()

        // Register cell classes
        self.collectionView.registerClass(MyCustomCollectionViewCell.self,forCellWithReuseIdentifier: reuseIdentifier)

    }

    override func numberOfSectionsInCollectionView(collectionView: UICollectionView?) -> Int {
        return 1
    }

    override func collectionView(collectionView: UICollectionView?,numberOfItemsInSection section: Int) -> Int {
        return names.count
    }

    override func collectionView(collectionView: UICollectionView?,cellForItemAtIndexPath indexPath: NSIndexPath?) -> UICollectionViewCell? {
        var cell = collectionView?.dequeueReusableCellWithReuseIdentifier("Cell",forIndexPath: indexPath) as MyCustomCollectionViewCell

        cell.name.text = names[indexPath!.item]

        return cell
    }
}

MyCustomCollectionViewCell

class MyCustomCollectionViewCell: UICollectionViewCell {

    @IBOutlet var name: UILabel
    init(frame: CGRect) {
        super.init(frame: frame)                
    }
}