How to “become a fan” by Facebook API without leaving iPhone app?

Question

I'd like to allow user to "become a fan" of certain Facebook page in my iPhone app. How can I do that without leave my app, i.e.:

• user choose to "become a fan" of a predefined page
• Facebook login dialog shows up within app
• the app sends "become a fan" request via Facebook API
• the Facebook dialog closes and return to app

Some source code samples will be very helpful.

Answer 1

Check out this method on how to allow the user to become a fan on the iPhone. The problem here is that the user will leave your application and must have the Facebook app installed on his deviec...

Answer 2

Regarding the method suggested by ibeitia, it currently doesn't work reliably. There is a known bug in the Facebook application which displays a blank screen instead of your facebook page (unless the user's last action was visiting another profile page).

You can follow up here: http://bugs.developers.facebook.net/show_bug.cgi?id=14899