Android应用程序中Java与JavaScript如何交互

 public void web(Context context){        WebView webView = new WebView(context);        WebSettings settings = webView.getSettings();        settings.setJavaScriptEnabled(true);        webView.setWebChromeClient(new WebChromeClient());        String url = "http://www.baidu.com";        webView.loadDataWithBaseURL(null,url,"text/html","utf-8",null);        webView.addJavascriptInterface(new Object(){            public void move(int x){                //java代码            }        },"demo");

javascript

<script launguage="javascript">window.demo.move(100);</javascript>