nsmanagedobjectcontext

相关标签：javascript jquery android 多少钱 iPhone

Error on second save of NSManagedObjectContext (deallocated insance)

I\'ve read several threads dealing with similar issues on here, but I just can\'t figure out what I am over-releasing.From a detail view controller for a Player object, I push a UITableViewController[详细]

2023-02-23 12:43 分类：问答
mergeChangesFromContextDidSaveNotification Briefly Displays Both Contexts In NSTableView

I have a managedObjectContext for the main application that has a bound NSArrayController and NSTableView displaying the contents of the NSArrayController.[详细]

2023-02-20 18:18 分类：问答
NSManagedObject outside of a managedObjectContext

I\'ve seen others asking about how to use an NSManagedObject outside of the managedObjectContext. Seems like everyone says you should not do this, but I can\'t find information on what to do instead.[详细]

2023-02-20 12:09 分类：问答
NSManagedObject Not Reflecting Changes After Background Thread NSManagedObjectContextDidSaveNotification

I am having trouble with an NSManagedObject not reflecting the changes made to a persistent store after a background thread has saved it\'s context.[详细]

2023-02-20 01:18 分类：问答
Core data dirty flag not being set

I have a core data document based cocoa app that is working well except for one slightly odd problem.[详细]

2023-02-18 16:11 分类：问答
Should I check if `[managedObjectContext hasChanges]` before saving?

// Save changes if any. NSError *error; if ([managedObjectContext hasChanges] && ![managedObjectContext开发者_C百科 save:&error]) {[详细]

2023-02-18 09:08 分类：问答
NSManagedObject Without Inserting It: Related Many

My XML import requires that I check for an existing object before I insert. In other words I need to hold each record in a temporary managed data object before I determine whether to save it or not. *[详细]

2023-02-14 21:41 分类：问答
CoreData Reloading Data to UITableView Issue

I am fighting with CoreData again and i need your help :P I am writing a RSS reader. Design is based on Apple TopSongs example using libxml2 library.[详细]

2023-02-14 06:10 分类：问答
How to properly delete a "temporary" NSManagedObject upon the application quitting

I create a temporary NSManagedObject and associate it with the main NSManagedObjectContext. I need be able to treat it as a fully functioning object (perform fetch requests, etc) inside the context an[详细]

2023-02-14 03:42 分类：问答
Saving NSManagedObjectContext casuing UITableView cells to disappear

I\'m having the following issue. I\'m writing a RSS reader using CoreData and Apple Recipes example as a guide. I have a refresh button that re-downloads the RSS and verify using NSFetchRequest if th[详细]

2023-02-13 12:03 分类：问答