In core data for the iPhone, I was getting all sorts of errors trying to save data to a NSManagedObjectContext.
I\'ve set up my project with the \"use coredata\" option set. XCode obviously set all this up for me automatically, and now I have these lines in the app delegate header file:
I keep getting crashes from a save: command on a managedObjectContext.It doesn\'t even fulfill the NSLog statement so I don\'t see the unresolved error statement, so I can\'t figure out what the probl
I am a novice in Objective-C; and I could not find any solution in my Books or internet. My question: What are the most efficient and fastest ways to use already compiled .mom and SQLite db without h
I get the following error: \'NSInvalidArgumentException\', reason: \'Illegal attempt to establish a relationship \'condition\' between
I try to delete some managedobjects by calling in a for loop [man开发者_如何学编程agedObject delete];
In my iPhone app, I have an NSFetchedResultsController showing User objects in a UITableView. The User Objects have 0-many Log objects. A summary of the Log objects are shown together with their User
I have some trouble with a core data project. I have a NSArrayController with NSManagedObjects in it, and + / - buttons. If i delete a object in the row after the file has been saved it works perfectl
I am using core data in my iPhone app. I have created a simple class Friend, which derives from NSManagedObject and which uses the following property:
I need to understand something about NSManagedObjectContext update. I have a UISplitView with a UITableViewController on the RootView and a UIViewController on the Detail View. When I tap in a row wit
加载中,请稍侯......