Facebook Login for Android App with release key

Question

I am trying to release my app on Google Play. I have a Facebook login in my app. Up until yesterday all was working fine till the time I was running the application with

Answer 1

For Linux

Open Terminal :

For Debug Build

keytool -exportcert -alias androiddebugkey -keystore debug.keystore | openssl sha1 -binary | openssl base64

you wil find debug.keystore from ".android" folder copy it from and paste on desktop and run above command

For release Build

keytool -exportcert -alias  -keystore  | openssl sha1 -binary | openssl base64

NOTE : Make sure In Both case it must ask for password. If it does not asks for password that means something is wrong in command.