WebSettings webSettings = mWebView.getSettings();
// Adopt the default cache policy, i.e., the cache will always be used before it expires
webSettings.setCacheMode(WebSettings.LOAD_DEFAULT);
// Load web image resources
webSettings.setBlockNetworkImage(false);
// Support JavaScript scripts
webSettings.setJavaScriptEnabled(true);
// Support zoom
webSettings.setSupportZoom(true);
mWebView.setWebViewClient(new WebViewClient() {
    // Use this method for API 21 or later
    @SuppressLint("NewApi")
    @Override
    public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {
        if (request != null && request.getUrl() != null && request.getMethod().equalsIgnoreCase("get")) {
            String scheme = request.getUrl().getScheme().trim();
            String url = request.getUrl().toString();
            Log.d(TAG, "url:" + url);
            // HTTPDNS resolves the network and image requests of CSS files
            if ((scheme.equalsIgnoreCase("http") || scheme.equalsIgnoreCase("https"))
            && (url.contains(".css") || url.endsWith(".png") || url.endsWith(".jpg") || url .endsWith(".gif"))) {
                try {
                    URL oldUrl = new URL(url);
                    URLConnection connection = oldUrl.openConnection();
                    // Get the HTTPDNS query result
                    String ips = MSDKDnsResolver.getInstance().getAddrByName(oldUrl.getHost());
                    String[] ipArr = ips.split(";");
                    if (2 == ipArr.length && !"0".equals(ipArr[0])) { // Get the IP successfully through HTTPDNS, replace the URL, and set the host header
                        String ip = ipArr[0];
                        String newUrl = url.replaceFirst(oldUrl.getHost(), ip);
                        connection = (HttpURLConnection) new URL(newUrl).openConnection(); // Set the host field of the HTTP request header
                        connection.setRequestProperty("Host", oldUrl.getHost());
                    }
                    Log.d(TAG, "contentType:" + connection.getContentType());
                    return new WebResourceResponse("text/css", "UTF-8", connection.getInputStream());
                } catch (MalformedURLException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return null;
    }

    // Use this method for API 11–20
    public WebResourceResponse shouldInterceptRequest(WebView view, String url) {
        if (!TextUtils.isEmpty(url) && Uri.parse(url).getScheme() != null) {
            String scheme = Uri.parse(url).getScheme().trim();
            Log.d(TAG, "url:" + url);
            // HTTPDNS resolves the network and image requests of CSS files
            if ((scheme.equalsIgnoreCase("http") || scheme.equalsIgnoreCase("https"))
            && (url.contains(".css") || url.endsWith(".png") || url.endsWith(".jpg") || url.endsWith(".gif"))) {
                try {
                    URL oldUrl = new URL(url);
                    URLConnection connection = oldUrl.openConnection();
                    // Get the HTTPDNS query result
                    String ips = MSDKDnsResolver.getInstance().getAddrByName(oldUrl.getHost());
                    String[] ipArr = ips.split(";");
                    if (2 == ipArr.length && !"0".equals(ipArr[0])) { // Get the IP successfully through HTTPDNS, replace the URL, and set the host header
                        String ip = ipArr[0];
                        String newUrl = url.replaceFirst(oldUrl.getHost(), ip);
                        connection = (HttpURLConnection) new URL(newUrl).openConnection(); // Set the host field of the HTTP request header
                        connection.setRequestProperty("Host", oldUrl.getHost());
                    }
                    Log.d(TAG, "contentType:" + connection.getContentType());
                    return new WebResourceResponse("text/css", "UTF-8", connection.getInputStream());
                } catch (MalformedURLException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                }
            }
        }
        return null;
    }});
// Load web resources
mWebView.loadUrl(targetUrl);