ios - What is the expected behaviour of Facebook login?

Question

I want to know what the expected behaviour of Facebook login integrated in an iPhone app is, when a user is already logged into Facebook on the device through Facebook app, and the app is granted the required permissions in the previous login. I want to know if the app exits and starts again, should it still switch to Facebook app/website to check the permissions or should it silently log the user in without getting out of the app? Currently, my app switches to Facebook, detects that the user has already granted access, asks for an Ok or Cancel and comes back to the app. I wan to know if this behaviour is expected, because it seems it's doing nothing but unnecessary switching. I have asked this question in another form and I have included my code. Here's the link: http://bit.ly/1E1u2VI

Thank you!

Answer 1

I have checked the login process using safari browser it's work for me. [FBSDKAccessToken currentAccessToken] is working fine. I am attaching some screenshots might help you.