Android:在WebView中获取网页源码

最新推荐文章于 2024-06-15 11:15:55 发布

最新推荐文章于 2024-06-15 11:15:55 发布 · 122 阅读

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本文详细介绍了如何使用Android WebView加载URL，并通过JavaScript接口在Java中获取网页源码的具体步骤，包括设置WebView属性、加载URL、使用JavaScript方法打印源码。

 
   view plain 
  
 importandroid.app.Activity; 
 importandroid.graphics.Bitmap; 
 importandroid.os.Bundle; 
 importandroid.util.Log; 
 importandroid.webkit.WebView; 
 importandroid.webkit.WebViewClient; 
  
 publicclassHtmlSourceextendsActivity{ 
 privateWebViewwebView; 
 /**Calledwhentheactivityisfirstcreated.*/ 
 @Override 
 publicvoidonCreate(BundlesavedInstanceState){ 
 super.onCreate(savedInstanceState); 
 setContentView(R.layout.main); 
 webView=(WebView)findViewById(R.id.webview); 
 webView.getSettings().setJavaScriptEnabled(true); 
 webView.addJavascriptInterface(newInJavaScriptLocalObj(),"local_obj"); 
 webView.setWebViewClient(newMyWebViewClient()); 
 webView.loadUrl("http://www.cnblogs.com/hibraincol/"); 
 } 
  
  
 finalclassMyWebViewClientextendsWebViewClient{ 
 publicbooleanshouldOverrideUrlLoading(WebViewview,Stringurl){ 
 view.loadUrl(url); 
 returntrue; 
 } 
 publicvoidonPageStarted(WebViewview,Stringurl,Bitmapfavicon){ 
 Log.d("WebView","onPageStarted"); 
 super.onPageStarted(view,url,favicon); 
 } 
 publicvoidonPageFinished(WebViewview,Stringurl){ 
 Log.d("WebView","onPageFinished"); 
 view.loadUrl("javascript:window.local_obj.showSource('<head>'+"+ 
 "document.getElementsByTagName('html')[0].innerHTML+'</head>');"); 
 super.onPageFinished(view,url); 
 } 
 } 
  
 finalclassInJavaScriptLocalObj{ 
 publicvoidshowSource(Stringhtml){ 
 Log.d("HTML",html); 
 } 
 } 
 } 