设备上的WKWebView无法加载缓存的HTML

Question

我有一个完全在模拟器中工作的WKWebView,但为什么在设备中只运行一个白色空屏幕,这是我的代码:

override func loadView() {
    let webConfiguration = WKWebViewConfiguration()
    webConfiguration.preferences.setValue(true, forKey:"allowFileAccessFromFileURLs")
    webView = WKWebView(frame: .zero, configuration: webConfiguration)
    webView.uiDelegate = self
    view = webView
}

override func viewDidLoad() {
    super.viewDidLoad()

    let path2Esferas = Path.localPath.stringByAppendingPathComponent(path: "\(Path.DIR_IMAGES)\(ImagenDescargaTipo.esfera.rawValue)/\(desarrollo.id)/virtualtour.html")
    let url =  URL(fileURLWithPath: path2Esferas) 
    //NSURL.fileURL(withPath: path2Esferas)

    let myRequest = URLRequest(url: url)
    webView.load(myRequest)
}

在"path2Esferas"的HTML是在高速缓存中的文件夹,我以前加载,如果我把不同的URL一样let myURL = URL(string: "https://www.apple.com")的文档显示,它工作正常在模拟器和设备.例如:http://proyectoshm.com/esferas/real_de_mina/realdeminas.html

Answer 1

一年多后我找到了解决方案，我们需要使用loadFileURL来访问本地资源，这是我使用 WKWebView 的工作代码，加上我使用 loadHTMLString 而不是加载。顺便说一句，我的 WebView 中的vistaweb

感谢这个答案：Load local web files & resources in WKWebView

        do {

            let local = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true)[0]
            // Loading: Library/Caches/repositorioLocal/esferas/znvUifZhH8mIDr09cX8j/index.html
            let resourceFolder = "repositorioLocal/esferas/znvUifZhH8mIDr09cX8j"
            let fileToLoad = "index.html"

            let urlToFolder = URL(fileURLWithPath: local).appendingPathComponent(resourceFolder)
            let urlToFile =  URL(fileURLWithPath: local).appendingPathComponent(resourceFolder).appendingPathComponent(fileToLoad)
            let fileContent = try String(contentsOf: urlToFile)

            let webConfiguration = WKWebViewConfiguration()
            webConfiguration.preferences.setValue(true, forKey: "allowFileAccessFromFileURLs")
            webConfiguration.allowsInlineMediaPlayback = true

            vistaweb = WKWebView(frame: self.view.frame, configuration: webConfiguration)
            self.vistaweb.loadFileURL(urlToFolder, allowingReadAccessTo: urlToFolder)
            self.vistaweb.loadHTMLString(fileContent, baseURL: urlToFile)
            self.view.addSubview(vistaweb)

        } catch let error {
            print("Error: \(error.localizedDescription)")
        }