How do I add custom data and fields to the the Contacts screen in Android?

Question

I'm trying to add a custom data field and MIME type to the Contacts screen. Is there a way to do this such that when a user views a contact with my data saved on it, my field appears there? This is something I've seen other apps do--how do the Facebook, Twitter, Last.fm, etc. apps add their status information to contacts, for example? I can't seem to figure it out from the Contacts API documentation.

Answer 1

This guide gives a very good description on how to do what you asked: http://www.c99.org/2010/01/23/writing-an-android-sync-provider-part-1

Answer 2

Pentium10 has an answer on this page, I'm not sure it displays the data in the contacts app too or not.