收集視圖的單元格中的圖像

Question

我正在顯示來自集合視圖中的分析後端的圖像。

在CollectionViewController我有這方面的工作代碼：

class CollectionViewController: UICollectionViewController, UICollectionViewDelegateFlowLayout, UICollectionViewDataSource { 

@IBOutlet var collection: UICollectionView! 

override func viewDidLoad() { 
    super.viewDidLoad() 

    // Uncomment the following line to preserve selection between presentations 
    // self.clearsSelectionOnViewWillAppear = false 

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

    // Do any additional setup after loading the view. 

} 


override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
    // Dispose of any resources that can be recreated. 
} 

override func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int { 
    //#warning Incomplete method implementation -- Return the number of sections 
    println(numberOfDistinctValueInTypeOfStore) 
    return numberOfDistinctValueInTypeOfStore 
} 


override func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { 
    //#warning Incomplete method implementation -- Return the number of items in the section 
    return 1 
} 

override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {  
    let cell:UICollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as UICollectionViewCell  
    // Configure the cell 
    cell.backgroundColor = UIColor.redColor()  
    return cell 
} 

我想圖像添加到單元格。 所以我的方法來改變這一點，應用程序崩潰：

override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {  
    let cell:UICollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as UICollectionViewCell  
    // Configure the cell 
    cell.backgroundColor = UIColor.redColor()  
    return cell 
} 

而且，即使CellCollectionViewCell是空的這個樣子。它會崩潰沒有錯誤信息

class CellCollectionViewCell: UICollectionViewCell { 


} 

通常我會添加一個插座到單元格內的圖像視圖。

錯誤在此代碼

let cell:CellCollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) 

給出了一個斷點爲CellCollectionViewCell

Answer 1

let cell:CellCollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier(**reuseIdentifier**, forIndexPath: indexPath) 

它應該是一個字符串，你必須設置在故事板這個標識符。