UIManagedDocument example / tutorial
问题 I have been trying very unsuccessfully to create a simple UIManagedDocument library style application (separate documents saved to iCloud). I am confused with the following: Do I subclass UIManagedDocument and set up the persistentStoreCoordinator , ManagedObjectModel & ManagedObjectContext within this subclass, or are these supposed to be configured within the AppDelegate (and if so, how do I go about refreshing the persistentStoreCoordinator to look at the new file - it seems that once that