I'm trying the sample on http://docs.telerik.com/platform/appbuilder/sample-apps/sample-facebook-api
1. Logged in:
- How do we detect a user is already logged in? So that we can hide the login button and show the logout button.
Tried the codes to revoke permission & wipe the token (below). But it does not clear the logged in user fully. When I click Login again, I no need to key in username & password and can just click OK to continue. How can I logout so that I need to key in the username and password again?
"Delete response (facebook):"