SDWebImage 使用 Swift 在 CellView 中将图像设置为 UIButton



嗨,我正在使用SDWebImage将图像设置为xcode 10.2.1中的按钮。

我正在尝试以下方法

import SDWebImage
cell.bProfileImage.sd_setImage(with:URL(string:
individualChatsListArray[indexPath.row].profile_image), forState:.normal)

但是我收到以下错误

Value of optional type 'UIButton?' must be unwrapped to refer to member
 'sd_setImage' of wrapped base type 'UIButton'

在笔尖文件中,项目被链接并声明如下

@IBOutlet weak var bProfileImage: UIButton!

@IBAction func bProfileImage(_ sender: Any) {
    print("touch kia")
}

我试过了

cell.bProfileImage?.sd_setImage(with:URL(string:
individualChatsListArray[indexPath.row].profile_image), forState:.normal)

但随后出现以下错误

Ambiguous reference to member 'bProfileImage'

如您所见,我是 xcode/swift 的新手

以下内容没有给出任何错误,但也没有加载图像

cell.bProfileImage.sd_setBackgroundImage(with: URL(string:
individualChatsListArray[indexPath.row].profile_image), for:
UIControl.State.normal) { (image, error, cache, url) in }
以下内容运行

良好。

cell.bProfileImage.sd_setBackgroundImage(with: URL(string:
individualChatsListArray[indexPath.row].profile_image), for:
UIControl.State.normal, placeholderImage: UIImage(named:
"default_profile"), options: SDWebImageOptions(rawValue: 0)) { (image,
error, cache, url) in
}

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