无法将javascript执行到webview中

Question

Whenever I am trying to execute javascript using loadUrl, it either navigates to a blank page with my javascript value or completely blank page.

I have tried almost every solution that I could find on the internet. Whatever I have tried ends up as blank page or blank page with my value as a textView(label) with no css.

         final WebView webView;
        webView = (WebView) findViewById(R.id.webView);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setDomStorageEnabled(true);
        webView.loadUrl("https://www.google.com/");

    webView.setWebViewClient(new WebViewClient() {

         public void onPageFinished(WebView view, String url) {

             webView.loadUrl("alert('sound')");
             //webView.loadUrl("javascript:alert('ssss')");
//webView.loadUrl("javascript:document.getElementsByName('txtUserName').value = 'kekk'");




         }
      });

Answer 1

从KitKat开始，您应该使用evaluateJavascript Javascript，在此处的文档中evaluateJavascript检查。