How to call a RESTful web service from Android?

Question

I have written a REST web service in Netbean IDE using Jersey Framework and Java.

For every request the user needs to provide a username and a password, I know that

Answer 1

Stop with whatever you were doing ! :)

Implement the RESTful client as a SERVICE and delegate the intensive network stuff to activity independent component: a SERVICE.

Watch this insightful video http://www.youtube.com/watch?v=xHXn3Kg2IQE where Virgil Dobjanschi is explaining his approach(es) to this challenge...