Default Android Contacts Connexions Programming

Hello,
I found how to program my app so that i see it icon in android phone contacts, like Google, Facebook icons on this screenshot.
Can you refer me follows References or Documentations links for do that.
Thanks.
Attached Thumbnails
Click image for larger version

Name:	Capture.png
Views:	3
Size:	146.2 KB
ID:	2803859