android 使用WebView获得加载网页的html代码

2019-11-09 15:44:33

字体：大中小

来源：转载

供稿：网友

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); } }}

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