使用 '！'这里已被弃用，将在未来的版本中删除 - swift 4.2

Question

在 Swift 4.2.

中使用 SDWebimage 在单元格中设置图像时，编译器抛出以下警告

Swift 编译器警告：

Using '!' here is deprecated and will be removed in a future release

let url = NSURL(string: (str_url) as String)

cell.img!.sd_setImage(with: url as URL!, completed: block_image) //--- WARNING ON THIS LINE AT URL!

有什么建议吗？

Answer 1

使用此代码：cell. img!.sd_setImage(with: url! as URL, completed: block_image)

建议：使用URL代替NSURL

            let url = URL(string: "" ) //use url String
            cell.img!.sd_setImage(with: url, completed: block_image)

Answer 2

试试这个：

if let url = URL(string: str_url) {
    cell.img!.sd_setImage(with: url, completed: block_image)
}