Create New App in Facebook Account

Step - 1 

Login in your facebook account.

Step - 2 
Create New App 
Make Sure to select category type


Step - 3 Quick Start from Dashboard.

Step - 4 Copy package and class name from your app android manifest and paste.
           Generate machine hash key and paste in hash key.
keytool -exportcert -alias androiddebugkey -keystore %HOMEPATH%.androiddebug.keystore | openssl sha1 -binary | openssl base64

Note : Now you can proceed for next step which is login with facebook in next post.

Feel free to post your comments, queries and suggestions 
Cheers...:-)

Login With Facebook in Android Studio

Step - 1

Step - 2

Step - 3

Step - 4

Gradle Script -> build.gradle(Module:app)

Step - 5

Final Output 

Feel free to post your comments, queries and suggestions 

Cheers...:-)