Just as CommonsWare mentioned, you should probably use a third party RSS library for this if you want to keep it simple. The newest RSS library in the Android Arsenal is one I made: PkRSShttps://github.com/Pkmmte/PkRSS
The API is extremely simple yet flexible.
// Loads your RSS feed in a background threadPkRSS.with(this).load(url).async();// After it has finished loading, use this to get the resultList<Article> articleList = PkRSS.with(this).get(url);
Of course, there are a lot more details if you visit the GitHub page for this library.