You need to find description how to read tags in rss root tag:
<rss xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:feedburner="http://rssnamespace.org/feedburner/ext/1.0" xmlns:media="http://search.yahoo.com/mrss/">
In your app define Strinf value that contains namespace that you need:
private static final String NS_MEDIA = "http://search.yahoo.com/mrss/";
Inside feedParser make this:
Element media = item.requireChild(NS_MEDIA, "content");
And read content:
media.setStartElementListener(new StartElementListener() {
public void start(Attributes attrs) {
if (attrs.getValue(URL).contains("jpg"))
currentMessage.setImgUrl(attrs.getValue(URL));
}
});