I put the Android key hash in the developer settings, like described here:
http://developers.facebook.com/docs/mobile/android/build/#sig
it works, using the app for months already.
Now I want to enable single sign-on.
Did the steps, described in the same page (in the Android app and enable single sign on in the developer account). But I get in the app:
invalid_key:Android key mismatch. Your key ”
xxxxxxxxxxxxxxxxxxxxxxxx
” does not match the allowed keys specified in your application settings. Check your application settings at http://www.facebook.com/developers
(I removed the key for SO).
What is the problem? Everything works if I don’t use single sign on. Is the key maybe not used, when not using single sign on (don’t believe that).
Thanks.
Ok, it seems that the key hash is necessary only for single sign-on. So mine is probably wrong, and it’s ignored when not using single sign-on.
Edit: Confirmed, changing the key fixed the problem.