It cantains two parts: One is sdk sample. the other is how to integrate the sdk into your apps.
Import the sdk of facebook to Android Studio 1.2.1.1. ==> It's OK.
Build all projectes in sdk. ==> It's Ok.
##Integration Using the sdk-4.6 and integrate into my Demo. It work!
Note: If you want to know which code I have changed about the integration. Please search the key word "step_x". There are many markes like "step_1", "step_2" ... ...