android 使用WebView获得加载网页的html代码

来源：互联网发布：淘宝买家秀卖家秀搞笑编辑：程序博客网时间：2024/05/23 14:32

在网上查询相关资料, 都是使用相同的方式, 但是使用不起作用, 最终在实验成功的方式如下(方法差不多):

mWebView = (WebView) view.findViewById(R.id.webview);mWebView.getSettings().setJavaScriptEnabled(true);mWebView.addJavascriptInterface(new MyJavaScriptInterface(), "HTMLOUT");mWebView.setWebViewClient(new WebViewClient() {  @Override  public void onPageFinished(WebView view, String url) {      mWebView.loadUrl("javascript:window.HTMLOUT.processHTML('<head>'" +                        "+document.getElementsByTagName('html')[0].innerHTML+'</head>');");            }  });mWebView.loadUrl("http url");

在调用上述内容的方法上声明:

@SuppressLint({"JavascriptInterface", "SetJavaScriptEnabled", "AddJavascriptInterface"})

编写本地接口

    class MyJavaScriptInterface {        @JavascriptInterface        @SuppressWarnings("unused")        public void processHTML(String html) {            // process the html as needed by the app            Log.i("htmllll", "processHTML: ===" + html);            parseVideoData(html);        }    }

组合起来如下:

public class htmlParseActivity extends Activity {    @Override    @SuppressLint({"JavascriptInterface", "SetJavaScriptEnabled", "AddJavascriptInterface"})    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        mWebView = (WebView) view.findViewById(R.id.webview);        mWebView.getSettings().setJavaScriptEnabled(true);        mWebView.addJavascriptInterface(new MyJavaScriptInterface(), "HTMLOUT");        mWebView.setWebViewClient(new WebViewClient() {          @Override          public void onPageFinished(WebView view, String url) {               mWebView.loadUrl("javascript:window.HTMLOUT.processHTML('<head>'" +                        "+document.getElementsByTagName('html')            [0].innerHTML+'</head>');");            }       });       mWebView.loadUrl("http url");;    }    class MyJavaScriptInterface {        @JavascriptInterface        @SuppressWarnings("unused")        public void processHTML(String html) {            // process the html as needed by the app            Log.i("htmllll", "processHTML: ===" + html);            parseVideoData(html);        }    }}

0 0