I am integrating my android app with Facebook using Facebook SDK.
I have two question. 1. Do I have to generate hash key for each of the app that I'll develop? 2. Is there any debug hash key and release hash key? Note : I'm not using Facebook login, just sharing to Facebook and messenger
Yeah, you need a hash key for each of your apps when playing with Facebook. You can use this trick to find your key.
Then fallow the official Facebook tutorial for sharing.