Give the simplest example for Google Cloud Messaging for Android -

i registered project in google api console updated android sdk ->extra->google cloud messaging android imported library gcm.jar in project necessary classes visible. want write simple example of using google cloud messaging android. examples complex , confusing. please tell me simplest example android. application starts , take notice in form of text. simplest example. , if can example of how make server kotoorye send these messages.

see repository contains necessary code creating working client , server implementation gcm.

to learn gcm take @ official site

good luck!