I have an entity Order with property paid, which is a开发者_开发知识库 boolean. I want to display all orders in a UITableView, but I want to group them in two sections: \'Not Paid\' and \'Paid\'. So
I have a problem with my core data. I am trying to save the context and I keep getting this error: \'NSInternalInconsistencyException\', reason: \'This 开发者_StackOverflow中文版NSPersistentStoreCoo
Description I have a Tab Bar Controller with a navigation controller tab. The first and default tab is called \"NowViewController\". So in my AppDelegate\'s application:didFinishLaunchingWithOptions
I have an application that collects the report on usage and stores it into the core data model. The application has to send mail every hour to the client despite of the application running or not. I h
I\'ve decided to add an NSNumber attribute to one of my entities in core data. I Cleaned the code and deleted the app from the simulator. I then added the following code in my appDelegate and it tells
I was saving core data objects successfully until now. In this code, I\'m sea开发者_Python百科rching for some objects and want to update or add a property to the saved object.
I have a strange problem in my Core Data app. I have three entities in my app, but today I found a problem with one of them. My problematic entity is called Invoice and it has many attributes, includ
I\'m working on a coin app. Coins are presented to the user in a tableview, managed by Core Data. All the coin names begin with either \"19\" or \"20\". When I implement a section index on the table
I have an entity called \"Sessions\" and it contains an NSDate attr开发者_如何学运维ibute. What I want is to be able to query the core data model and get an array of the DAYS of the NSDates, without
I create a new managed object开发者_JAVA技巧 context in a new thread an insert some objects into it. Can I discard (just forget them) them by just not saving the context? My problem is this: I start a
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