Facebook Login Integration :

It is used to login to Facebook and obtain basic information of User such as Name, Facebook ID, Email, Birthday...

Check app for sample

SDK version : 4.12.0

Goto developers.facebook.com and create an application.

Follow the process and add key hash. (Easier way of adding key hash is search for "KeyHash" in log. I already added a logic to get keyhash programatically in LoginActivity)

Get the facebook app ID and add it to your strings.xml