[英]Download image using SDWebImage, error -999 (or) SDWebImageErrorDomain Code=0 "Downloaded image has 0 pixels
[英]SDWebImage error downloaded image has 0 pixels
使用 SDWebImage 最新的 swift 庫版本在加載幾個 url 時出現以下錯誤
下載的圖像有 0 像素
以下是代碼
if let url = URL(string: storeImgStr.encoded), !(storeImgStr.isEmpty) {
self.storeImg.sd_setImage(with: url, placeholderImage: UIImage(named: Constants.storeImagePlaceorderImage)) {
(image, error, cahce, url) in
if(error != nil) {
}
}
}
else {
self.storeImg.image = UIImage(named: Constants.storeImagePlaceorderImage)
}
由於政策問題,我的 url 看起來像這樣,無法共享確切的 url 域名已更改
https://tximages.mydomain.in/retailers_data_v2/retailer/320/3306-1-Aviator.jpg
以下是錯誤代碼
Error Domain=NSURLErrorDomain Code=-1100 "(null)"
我也可以在網絡瀏覽器中打開圖片網址。
這里的問題究竟是什么?
以下擴展名用於編碼 url
extension String {
var encoded: String {
return self.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) ?? ""
}
}
更新:能夠在 Chrome 瀏覽器中打開上面的圖片 URL,但無法在 Safari 瀏覽器中打開它是什么原因?
-1100
表示NSURLErrorFileDoesNotExist
。 還有一種可能性,服務器不會將文件返回到特定國家或由於urlString
特定符號。 在這種情況下,您可以應用以下編碼: stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding
。 你也可以使用SDWebImageRetryFailed ,因為它的描述文檔,詳細了解此標志:
storeImg.sd_setImage(with: urlEncoded, placeholderImage: UIImage(named: Constants.storeImagePlaceorderImage), options: .retryFailed) { // handle result completion }
您可以使用以下方法測試斷開的鏈接:
import UIKit
import SDWebImage
import WebKit
extension String {
var encoded: String {
return self.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) ?? ""
}
}
class ViewController: UIViewController {
let testURL = "https://i.groupme.com/638x640.jpeg.d4f31c747b534baca03d12db5a2b6193"
let testURLShouldEncode = "https://via.placeholder.com/468x60?text=Visit Blogging.com Now"
var storeImg: UIImageView!
var webView: WKWebView!
override func viewDidLoad() {
super.viewDidLoad()
configureUI()
if let urlEncoded = URL(string: testURLShouldEncode.encoded), !(testURL.isEmpty) {
storeImg.sd_setImage(with: urlEncoded, placeholderImage: UIImage(named: Constants.storeImagePlaceorderImage)) {
[unowned self] (image, error, cahce, url) in
print("image \(String(describing: image))")
print("error \(String(describing: error?.localizedDescription))")
print("cache \(cahce)")
print("url \(String(describing: url))")
if (error != nil) {
let request = URLRequest(url: urlEncoded)
self.webView.load(request)
}
}
} else {
self.storeImg.image = UIImage(named: Constants.storeImagePlaceorderImage)
}
}
func configureUI() {
storeImg = UIImageView()
storeImg.contentMode = .center
storeImg.translatesAutoresizingMaskIntoConstraints = false
webView = WKWebView()
webView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(storeImg)
view.addSubview(webView)
view.backgroundColor = .blue
storeImg.backgroundColor = .yellow
webView.backgroundColor = .orange
storeImg.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true
storeImg.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
storeImg.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
storeImg.heightAnchor.constraint(equalToConstant: 300).isActive = true
webView.topAnchor.constraint(equalTo: storeImg.safeAreaLayoutGuide.bottomAnchor).isActive = true
webView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
webView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
webView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor).isActive = true
}
}
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