I was hoping to revive this thread. I was planning to create the same project (Flex/AIR Application) using PureMVC. As of this time I haven't find any article on how to begin on this and just like what you said even a simple hello world is not present regarding this Flex + AIR + PureMVC application (even for a simple PureMVC + Flex). May I ask if you have find any articles on how to use/begin with the said framework? Any help would be appreciated. Thanks.
This is what I have used as a basis for studying MVC. Though the example uses Flex 3, you can still get an idea of what PureMVC is.
I would move past the first generation frameworks ( Cairngorm 1,PureMVC ). The field seems to be gravitating more towards dependency injected (DI) frameworks ( Mate,Swiz,Parsley ). PureMVC as I am sure you have noticed has a fairly large learning curve ( Mediators , Notification , Facades ... oh my ) and is quite "heavy" when used with Flex. When I say heavy, I mean that it feels like all previous Flex knowledge is invalidated and you have to learn how PureMVC does Flex, for instance, you lose databinding with PureMVC. In addition, documentation for the the first gen frameworks tends to be limited if present all, and never explanatory.
As a disclaimer, I use Mate, and that is what I recommend, mostly because I haven't gotten around to using the others ( Swiz,Parsley,RobotLegs, )
I'd have to second the vote for Mate. I couldn't get much leaner, IMHO. My New Year's Resolution is to give Robotlegs a real shot, as it gets rave reviews, but it will take quite a bit for me to switch from an easy, efficient solution.