This project uses twitter4j library:
to Tweet a message,
saving location where you have tweet the message, in a database.
You can see then, all the locations that you have make a Tweet, in a map.
You can also get the last 20 Tweets of another user, and saved them to a database.
If you 'd like to get the code, just ask it and I' ll share the code with you, to experiment with twitter4j library, SQLite, GeoLocation and MapView v.1 .