How to create a Facebook key hash?

Question

In the Facebook android tutorial we are told to use following code to create a key hash:

keytool -exportcert -alias androiddebugkey -keystore ~/.andro

Answer 1

When having the error in the log, when trying to login to Facebook, look for something that looks like:

Invalid key hash. The key hash *** does not match any stored key hashes. Configure your app key hashes at http://developers.facebook.com/apps/565561836797777

where "***" is the key that you need to use.