This helper is a frontend to query installed content providers. Android's content providers are similar to database tables.: They have a name (aka "content:" uri), columns and they can be queried similar to SQL. Android uses <a href="https://developer.android.com/guide/topics/providers/content-providers.html">content-providers</a> as API to manage global accessable data (i.e. images, address book, text messages, ...). Forked from <a href="https://github.com/jenzz/ContentProviderHelper">jenzz-s ContentProviderHelper</a> which is not maintained anymore. App permissions are set generously to provide maximum compatibility.