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ios - fatal error : unexpectedly found nil while unwrapping an Optional value Swift Using Alamofire in UICollectionView

转载 作者:行者123 更新时间:2023-11-28 11:05:18 25 4
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我正在使用 Alamofire 从网络服务中获取图像。我使用以下代码在 UICollectionView 的自定义单元格中显示这些图像

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let reuseIdentifier = "cell"
// get a reference to our storyboard cell
let cell : ImageCollectionCell = collectionView.dequeueReusableCellWithReuseIdentifier("cellCollection", forIndexPath: indexPath) as! ImageCollectionCell

// Use the outlet in our custom class to get a reference to the UILabel in the cell
cell.backgroundColor = UIColor.yellowColor() // make cell more visible in our example project
let imageGalleryURLString = self.MutableArray.objectAtIndex(indexPath.row) .valueForKey("thumbnail") as! String
let imageURL = NSURL(string:imageGalleryURLString)
cell.imageviewCollectionCell.sd_setImageWithURL(imageURL)
return cell
}

但应用程序在“cell.imageviewCollectionCell.sd_setImageWithURL(imageURL)”处崩溃,显示“ fatal error :在展开可选值时意外发现 nil

我已经遍历了所有可能的链接,但我还不满意

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