1.獲取沙盒路徑

let docPath = File.getUserFilePath()

class File {
//獲取用戶路徑
static func getUserFilePath()->URL{
    let manager = FileManager.default
    let urlForDocument = manager.urls(for: .documentDirectory, in:.userDomainMask)
    let url = urlForDocument[0] as URL
    return url
}
}

2.添加文件路徑及名稱

//tempUrl = "img/#.jpg"
let file = docPath.appendingPathComponent(tempUrl)

3.把文件讀取為二進(jìn)制，并把轉(zhuǎn)換為圖片格式

 let imgData = try! Data.init(contentsOf: file)
 cell.image.image = UIImage(data: imgData)