I have a SplitViewController that navigates a new ViewController on the viewDidAppear: method where the user can select a "project". Once the user has selected a project, that project is availible globally throughout the entire app and the MasterViewController should reload its items based on that. So whenever the ViewController is dismissed and the SplitViewController is visible again, I need to make the MasterViewController reload. How is this possible in a simple way?
You can either fire off a notification from your project selection controller that your MasterViewController picks up and handles accordingly, or you can set up a delegate protocol in your project selection controller, set your master as the delegate, and fire off the delegate callback. There are many tutorials around on setting up delegates or firing/observing NSNotifications.