我正在尝试通过API将图像显示到表单元格视图中。但是它在那里提供了部分链接，结果，我得到了NSURL连接错误代码-1002。
这是我的API链接：https : //api.opendota.com/api/heroStats
我正在尝试解析其中的“图标”：“ img”：“ /apps/dota2/images/heroes/antimage_full.png？”，“ icon”：“ /apps/dota2/images/heroes/antimage_icon.png”，
我的代码：//生成imageview
if let imageURL = URL(string: heroes[indexPath.row].icon){
print (imageURL)
DispatchQueue.global().async {
let data = try? Data (contentsOf: imageURL)
if let data = data {
let image = UIImage(data: data)
DispatchQueue.main.async {
cell.charIcon.image = image
} //end of 2nd dispatch
}//end of if
}//end of 1st dispatch
}// end of imageURL
我怎么解决这个问题？有什么简单的方法可以快速获得4？
您可以获取api链接的url组件，并使用图标“部分链接”来设置URL组件的path属性。之后，您只需要获取url组件的结果url：
let apiLink = "https://api.opendota.com/api/heroStats"
let apiURL = URL(string: apiLink)!
if var urlComponents = URLComponents(url: apiURL, resolvingAgainstBaseURL: false) {
let iconString = "/apps/dota2/images/heroes/antimage_icon.png"
urlComponents.path = iconString
if let iconURL = urlComponents.url {
print(iconURL.absoluteString)
}
}
这将打印
https://api.opendota.com/apps/dota2/images/heroes/antimage_icon.png
您可以创建一个自定义方法以基于新的路径字符串返回新的URL，如下所示：
extension URL {
var urlComponents: URLComponents? {
return URLComponents(url: self, resolvingAgainstBaseURL: false)
}
func bySettingNew(path: String) -> URL? {
guard var urlComponents = urlComponents else { return nil }
urlComponents.path = path
return urlComponents.url
}
}
let apiLink = "https://api.opendota.com/api/heroStats"
let apiURL = URL(string: apiLink)!
let iconString = "/apps/dota2/images/heroes/antimage_icon.png"
if let iconURL = apiURL.bySettingNew(path: iconString) {
print(iconURL.absoluteString)
}
您还可以将此帮助程序添加到项目中，以使您更轻松地异步将图像下载到图像视图中：
extension UIImageView {
func downloaded(from url: URL, contentMode mode: UIView.ContentMode = .scaleAspectFit) {
URLSession.shared.dataTask(with: url) { data, response, error in
guard
let httpURLResponse = response as? HTTPURLResponse, httpURLResponse.statusCode == 200,
let mimeType = response?.mimeType, mimeType.hasPrefix("image"),
let data = data, error == nil,
let image = UIImage(data: data)
else { return }
DispatchQueue.main.async() { [weak self] in
self?.contentMode = mode
self?.image = image
}
}.resume()
}
}
if let imageURL = apiURL.bySettingNew(path: heroes[indexPath.row].icon) {
cell.charIcon.downloaded(from: imageURL)
}
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