Android Real Time Updates From Server

I see that apps like facebook for example are getting push notifications in real time. When someone writes a message to me from a pc ill get the message to my android device as pus

Solution 1:

Yes, use Sync Adapter with GCM (Google Cloud Messaging) :

http://developer.android.com/training/sync-adapters/index.html

Read the tutorial i provided, you will at least know what to use.

And check this SO question, it has good answers (especially the accepted one) :

Sync data between Android App and webserver