When I try to build my Core Data App, which most code is coming from CoreDataBooks example, I get the error
This fetch method work perfectly and the NSLog prints out the contents of the database...(fetchedObjects in an NSArray):
I have 2 entities Locations and Items. Many to many relationship. So each item can have multiple locations and any location can have multiple items.
Pe开发者_如何学JAVArfect KVO here includes two parts: add observer correctly and remove observer correctly.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form. For help clari
I am parsing JSON string to create new managed objects in a separate thread and in a separate managed object context. Later I want to merge the changes in the main thread by listening to NSManagedObje
My understanding of an inverse relationship in CoreData is that these two statements should be equivalent:
I have an NSManagedObject that has some of its properties initialized at the start of the program. When I refer to this object later, it appears to be faulted, and the properties are not accessible. I
I see that there is a method of getting the unique id of a managed object: NSManagedObjectID *moID = [managedObject objectID];
My app offers some sort of editor functionality for \"text articles\". My editor has two modes. When the editor loads, I create a managed object if it hasn\'t been passed in through the initializer. W
加载中,请稍侯......