Multiple View Controllers

[canzhiye]

I'm trying to make a tab bar application with SA_OAuthTwitterEngine. The home tab currently works fine, but I don't know how to handle switching tabs (view controllers). I tried making a singleton class of SA_OAuthTwitterEngine, but whenever I switch views I get the "Woah there! It looks like someone already used the token information you provided." message. Any help is appreciated, thank you so much!

[canzhiye]

Here's my code, if you wanna take a look -> http://www.mediafire.com/?wr825g53vr0zaph

[pmairoldi]

Ok. you app does allow you to switch tabs but the thing is doesn't do is know whether the user is signed in or not. Is this a limitation of the class that you can't login only once to do things in multiple views.