I\'m working on an Android app, in which I want to integrate a Facebook posting feature. I downloaded the Facebook-Android SDK, and I got the readme.md (text file) in there,
1) Create a key to sign your application, and remember the alias.
2) Install OpenSSL.
3) Put the bin folder of OpenSSL in your path.
4) Follow the steps mentioned under "Setup Single Sign-On" on the FB-Android-SDK page, and generate your Hash Key. Make sure you put the correct alias and keystore file name.
5) Create an application on Facebok, and under Mobile Devices tab, enter this Hash Key.