First off, this question is closely related to Graphical Predicate Builder in Xcode 4 With Core Data. However, I don\'t have a high enough rating to comment yet, and since I have no answer to offer, I
I have an NSManagedObject that described an animal, it has the attributes \"name\", \"species\", \"scientificName\" etc. I display all animals in a UITableView and managed the NSManagedObjects with an
This time I get a strange behavior with N开发者_如何转开发SFetchedResultsController. I create a fetchRequest like this:
I am developing a app where with a custom tabbar opening different tableview. The information to the tableview is feeded by a JSON remote feed. And saved into Core Data with custom nsmanagedobject.
Using Core Data, I have my fetchedResultsController with a with a date field. I want to display two sections according to the date: if it\'s a date in the future I want to display it in the section a
I\'m trying to backup and then restore my core data. I\'ve read that I need to save the sqlite file and then load it back when I need it. I\'m able to save the sqlite file and then load it back but th
I\'m running a very simple fetch unitType like $GIVEN_TYPE with a substitution dictionary, it\'s returning consistently 40 objects when there should be about 5. It seems like it\'s repeating the same
I have a core data entity A that has a one-to-many relationship with entity B. Given a set of instances of entity B, how do I retrieve all instances of A that are NOT in a relationship with those inst
I have background NSInvocationOperation creating and saving NSArray to the NSManagedObject subclass. I know that save should happen on main thread, so I use performSelectorOnMainThread for save in th
In my app I have a function that presents a modal view controller when a bar button is pressed. Sometimes I have to call the same function progrmatically. But, whenever I have to present the view prog
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