Ios 相册应用程序swift lang，有错误的耦合功能

错误消息“字符串”不能转换为“字符串”

错误消息：找不到成员“AspectFill”

let asset: PHAsset = self.photoAsset[indexPath.item] as! PHAsset
PHImageManager.defaultManager().requestImageForAsset(asset,         targetSize: PHImageManagerMaximumSize, contentMode: .AspectFill, options:         nil,
    resultHandler: {(result:UIImage!, info:NSDictionary!)in
    cell.setThumbnailImage(result)
})

        return cell

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请提供帮助并感谢您

尝试在

resultandler

函数中省略

info

的显式类型声明<为我工作

let asset: PHAsset = self.photoAsset[indexPath.item] as! PHAsset
PHImageManager.defaultManager().requestImageForAsset(asset,         targetSize: PHImageManagerMaximumSize, contentMode: .AspectFill, options:         nil,
    resultHandler: {(result:UIImage!, info:NSDictionary!)in
    cell.setThumbnailImage(result)
})

        return cell