Apple is giving the example, that I could make a MyColor class for holding color data, and use this with an NSAttributeDescription object by calling the -setAttributeValueClassName: method.
I\'m familiar with Core Data basics and have done some dabbling, but have not really done any major apps. Now I need to plan for one. And the question is not specifically about Core Data, but more abo
Does it have to do with mapping between different data models? To which other Core Data classes is this related? It doesn\'t look too obvious to me where this belongs to. Merging data models? Or is th
I want to have an iPhone app where the user can export the data held by the开发者_如何学编程 application to an Excel spreadsheet (as well as a host of other formats).
I am a beginner for iPhone development, I use core data as backed store and show multiple data entities on UITableView. Each data entity will be show as a preview thumbnail， one table view cell will
I am using NSFetchRequest to fetch some items, which could be sorted by Popular, or Random. Following the guides, I could sort the items by popularity easily using NSSortDescriptor.
Is it 开发者_JS百科possible to share a core data store between two different iPhone apps signed by the same developer? I would like to develop an application where one iPhone app will save a stream of
I am new to CoreData and am struggling to work out the correct way to model a particular relationship. I have an entity called \'Friend\' with a few attributes such as \'name\', \'age\', \'sex\' etc.
I have 4 buttons on开发者_运维知识库 main screen, each one sends me to a viewController. The third one, sends me to a view on which I wanna set the managedObjectContext. If I use the class name to cre
I have a Core Data Entity that needs to hold onto the NSManagedObjectID of some other Entity. To do so I was considering converting the ObjectID to a string that is an approved type of an NSManagedObj
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