从NSCOREDATA加载NSARRAY

Question

我已在使用此代码保存的binarydata类型属性的nscoredatabase中保存了NSARRAY

AppDelegate *AppDelegate = [[UIApplication sharedApplication] delegate];

NSManagedObjectContext *context =
[AppDelegate managedObjectContext];

//guardar array
NSData *arrayData = [NSKeyedArchiver archivedDataWithRootObject:roll];


    NSManagedObject *newContact;

newContact = [NSEntityDescription
              insertNewObjectForEntityForName:@"Horarios"
              inManagedObjectContext:context];

   [newContact setValue:arrayData forKey:@"valor"];


    NSError *error;
    [context save:&error];

但我不知道如何从数据存储中取回它再次使用此NSARRAY

有人可以帮助我吗？

Answer 1

试试这段代码：

NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"Horarios"];
NSError *error;
NSArray *matches = [managedObjectContext executeFetchRequest:fetchRequest error:&error];

Answer 2

解决了添加此行的问题

[fetchRequest setReturnsObjectsAsFaults:NO];