Hi everyone,

I'm currently kicking off a background thread to do some REST queries in my app delegate's didFinishLaunchingWithOptions. This thread creates some objects and populates the model as the rest of the app continues to load (because I don't block, and didFinishLaunchingWithOptions returns YES). I also put up a loading UIViewController 'on top' of the main view that I tear down after the background initialization is complete.

My problem is that I need to notify the first view (call it the Home view) that the model is ready, and that it should populate itself. The trick is that the background download could have finished before Home.viewDidAppear is called, or any of the other Home.initX methods.

I'm having difficulty synchronizing all of this and I've thought about it long enough that it feels like I'm barking up the wrong tree.

Are there any patterns here for this sort of thing? I'm sure other apps start by performing lengthy operations with loading screens :)

Thanks!