在Swift 3中模糊地使用`setImageWith（_：placeholderImage：usingActivityIndi​​catorStyle：）`

Question

此代码在Swift 2.3中运行良好，但在升级到Swift 3.0时，编译器抱怨模糊使用。

imgProfilePhoto?.setImageWith((URL(string: profileurl)), placeholderImage: UIImage(named: "PatientDefaultProfilePic"), usingActivityIndicatorStyle:UIActivityIndicatorViewStyle.gray)

Answer 1

Swift 4

import SDWebImage
extension UIImageView {

@objc func setImageWithIndicator(urlStr: String?, placeholder: UIImage) {
    guard let _ = urlStr, let url = URL(string: urlStr!) else {
        image = placeholder
        return
    }
    sd_setIndicatorStyle(.gray)
    sd_addActivityIndicator()
    sd_setImage(with: url, placeholderImage: placeholder, options: .refreshCached, completed: nil)
}}

Swift 3

imageView.sd_setImage(with: URL(string: ""), placeholderImage: UIImage(named: ""))
imageView.setShowActivityIndicator(true)
imageView.setIndicatorStyle(.gray)

Answer 2

Swift等效方法用作从SDWebImage替换此方法：

imgProfilePhoto?.sd_setImageWithIndicator(with: URL(string: profileurl), placeholderImage: UIImage(named: "PatientDefaultProfilePic"))

Answer 3

这条线也对我有用：

添加完成处理程序nil。

imgView.setImageWith(imgUrl, completed: nil, usingActivityIndicatorStyle: .gray)