html target="_blank">google Cloud messaging is the push notification system for android devices.This is the sample app for the tutorial at http://android.amolgupta.in/2012/07/google-cloud-messaging-gcm-tutorial.html
Get the source code and the server side code at
http://code.google.com/p/blog samples/downloads/detail?name=gcm_sample_update1.rar&can=2&q=#makechanges