Android webview本地文件设置root

Question

我正在使用 Android 中的 webview 加载本地 web 应用程序：

view.loadUrl("https://appassets.androidplatform.net/assets/dist/index.html")

但是，当我在 JavaScript 中检查当前路由时，它会显示 https://appassets.androidplatform.net/assets/dist/index.html

这使得路由和文件加载之类的事情变得很痛苦 - 有没有办法设置加载的应用程序的根目录，这样我就可以避免整个 /assets/ ？

Answer 1

看看WebViewAssetLoader 那里的代码 sn-p 正是您所需要的。所以你基本上只需要将 assetsLoader 可以处理的所有请求转发给它，并使用它返回的响应。

final WebViewAssetLoader assetLoader = new WebViewAssetLoader.Builder()
          .addPathHandler("/assets/", new AssetsPathHandler(this))
          .build();

 webView.setWebViewClient(new WebViewClient() {
     @Override
     @RequiresApi(21)
     public WebResourceResponse shouldInterceptRequest(WebView view,
                                      WebResourceRequest request) {
         return assetLoader.shouldInterceptRequest(request.getUrl());
     }

     @Override
     @SuppressWarnings("deprecation") // for API < 21
     public WebResourceResponse shouldInterceptRequest(WebView view,
                                      WebResourceRequest request) {
         return assetLoader.shouldInterceptRequest(Uri.parse(request));
     }
 });

 WebSettings webViewSettings = webView.getSettings();
 // Setting this off for security. Off by default for SDK versions >= 16.
 webViewSettings.setAllowFileAccessFromFileURLs(false);
 // Off by default, deprecated for SDK versions >= 30.
 webViewSettings.setAllowUniversalAccessFromFileURLs(false);
 // Keeping these off is less critical but still a good idea, especially if your app is not
 // using file:// or content:// URLs.
 webViewSettings.setAllowFileAccess(false);
 webViewSettings.setAllowContentAccess(false);

 // Assets are hosted under http(s)://appassets.androidplatform.net/assets/... .
 // If the application's assets are in the "main/assets" folder this will read the file
 // from "main/assets/www/index.html" and load it as if it were hosted on:
 // https://appassets.androidplatform.net/assets/www/index.html
 webview.loadUrl("https://appassets.androidplatform.net/assets/www/index.html");