在 Android Webview 中，我可以修改网页的 DOM 吗？
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原文地址: http://stackoverflow.com/questions/2219074/
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In Android Webview, am I able to modify a webpage's DOM?
提问by TIMEX
Suppose I load a 3rd party URL through webview.
假设我通过 webview 加载了一个 3rd 方 URL。
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
webview = (WebView) findViewById(R.id.webview);
webview.setWebViewClient(new HelloWebViewClient());
webview.getSettings().setJavaScriptEnabled(true);
webview.setWebChromeClient(new MyWebChromeClient());
webview.loadUrl("http://ebay.com");
}
Is it possible for me to inject something into this WebViewto replace the ebay logo with my own?
我可以在这个 WebView 中注入一些东西来用我自己的标志替换 ebay 标志吗？
回答by Carlos Rendon
To expand on CommonsWare's correct answer:
要扩展 CommonsWare 的正确答案：
WebView webview = new WebView();
webview.setWebViewClient(new WebClient());
webView.getSettings().setJavaScriptEnabled(true);
webview.loadUrl("stackoverflow.com");
then in WebClient:
然后在 WebClient 中：
public class WebClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
@Override
public void onPageFinished(WebView view, String url)
{
// Obvious next step is: document.forms[0].submit()
view.loadUrl("javascript:document.forms[0].q.value='[android]'");
}
}
In a nutshell, you wait for the page to load. Then you loadUrl("javascript:[your javascript here]").
简而言之，您等待页面加载。然后你 loadUrl("javascript:[your javascript here]")。
回答by CommonsWare
Not directly. You can invoke Javascript code in the context of the current Web page, via loadUrl(), much like a bookmarklet does. However, you do not have direct access to the DOM from Java code.
不直接。您可以通过loadUrl()，在当前网页的上下文中调用 Javascript 代码，就像书签所做的那样。但是，您无法从 Java 代码直接访问 DOM。
回答by alphard
WebView webview = new WebView();
//Maybe need to set to enabled javascript?
webView.getSettings().setJavaScriptEnabled(true);
webview.setWebViewClient(new WebClient());
webview.loadUrl("stackoverflow.com");
