如果让 url = URL(string:"") 对于 .JPEG 图像总是失败

Question

if let url = URL(string: "https://omsoftware.org/sorora/public/profile_images/kapil borkar_199.jpeg"){}

当文件扩展名为 .jpeg 时总是失败。我试过 .png 它只工作正常。当扩展名是 .jpeg 时，URL(string:) 没有给出 url 对象。请帮忙。

Answer 1

如您所见，url 中有空格所以你可以使用 like

let urlStr = "your Url Strting".replacingOccurrences(of: " ", with: "%20")
if let url = URL(string: urlStr){}

Answer 2

您需要对 urlString 进行编码以处理空格。在 urlString 上使用 addingPercentEncoding(withAllowedCharacters:) 方法，即

let str = "https://omsoftware.org/sorora/public/profile_images/kapil borkar_199.jpeg"

if let urlString = str.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed), let url = URL(string: urlString) {
    //add your code here...
}

addingPercentEncoding(withAllowedCharacters:)

Returns a new string made from the receiver by replacing all characters not in the specified set with percent-encoded characters.

参考this了解更多addingPercentEncoding(withAllowedCharacters:)方法。

如果让 url = URL(string:"") 对于 .JPEG 图像总是失败

if let url = URL(string:"") always getting fail for .JPEG images

swift

url

jpeg

nsurl

xcode11