iOS 13 WKWebView not showing pdf file anymore

Question

I am using WKWebView to show a pdf file from a remote url. It was working fine in iOS 12 but in iOS 13 it just shows blank screen. I hit same domain with an image url and that worked fine but it has some issues with pdf files only.

let myURL = URL(string:"somefileurl.pdf") // If I hit this url in safari, It will download a pdf file.
let myRequest = URLRequest(url: myURL!)
webViewPdf.load(myRequest)  

Answer 1

我发现响应的内容类型是“ application / octet-stream”，而不是“ application / pdf”

所以我加载WKWebView为：

if let myURL = URL(string:"somefileurl.pdf") {
    if let data = try? Data(contentsOf: myURL) {
       webViewPdf.load(data, mimeType: "application/pdf", characterEncodingName: "", baseURL: myURL)
    }
}