android 获取 webview html 三步搞定

step1:create jsinterface class

class getHtmlListener{
    @JavascriptInterface
    public void getHtml(String html) {
        LogUtil.e("result",html);
    }    
}

step2:addJavascriptInterface

webview.addJavascriptInterface(new getHtmlListener(), "HTMLOUT");

step3:loadUrl

...
@Override
public void onPageFinished(WebView view, String url) {
    super.onPageFinished(view, url);
    myWebView.loadUrl("javascript:window.HTMLOUT.getHtml(''+document.getElementsByTagName('html')[0].innerHTML+'');");
}
...