How can I execute Javascript on already loaded webpage in Android Webview

Question

I want to execute a javascript on already loaded webpage in Webview. I am loading a new article webpage eg: www.techcrunch,com in webview. I want to run javascript on this already loaded webpage in Webview. This javascript is an external file in assets folder. The javascript basically extracts images from the tags in does some other processing in the html page. How can I execute this javascript on the already loaded www.techcrunch.com page?

Thanks,

I've never done any Android development, but I'm pretty confident there's no way to inject your own scripts into someone else's document in a Webview. That would be an ENORMOUS security problem. You're basically talking about a cross-site scripting (XSS) attack - regardless of the fact that your intentions aren't malicious. — Kevin Ennis
– Kevin Ennis, Commented Jun 26, 2012 at 5:17

tiguchi · Accepted Answer · 2012-06-26 05:39:38Z

3

It's the same like for any other web browser. Use the javascript protocol:

webview.loadUrl("javascript:alert('Example');");

answered Jun 26, 2012 at 5:39

tiguchi

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