2011-12-28 10:52:13.633 BadgerNew[663:707] CoreData: error: (NSFetchedResultsController) object <Business: 0x628c8e0> (entity: Business; id: 0x628c870 <x-coredata://8D661026-BBFA-4C41-B434-167800D925DD/Business/p88> ; data: {
Aliases = "<relationship fault: 0x6219950 'Aliases'>";
Bookmark = 0;
Building = nil;
City = "0x56531a0 <x-coredata://8D661026-BBFA-4C41-B434-167800D925DD/City/p1>";
Distance = "104.6926812925746";
Districts = (
"0x63bcb30 <x-coredata://8D661026-BBFA-4C41-B434-167800D925DD/District/p1>"
);
Email = nil;
ID = 74318;
Images = "<relationship fault: 0x621a130 'Images'>";
InBuildingAddress = nil;
LatitudeLongitude = "0x565c2e0 <x-coredata://8D661026-BBFA-4C41-B434-167800D925DD/LatitudeLongitude/p81>";
Like = 0;
OpeningHour = nil;
Phones = "<relationship fault: 0x62196b0 'Phones'>";
Price = 0;
Promotions = "<relationship fault: 0x6219630 'Promotions'>";
Rating = "0x565e800 <x-coredata://8D661026-BBFA-4C41-B434-167800D925DD/Rating/p81>";
Reviews = (
);
Street = "Jl. Duri Raya 73";
Tags = (
"0x63c38b0 <x-coredata://8D661026-BBFA-4C41-B434-167800D925DD/Tag/p74>"
);
Tenants = "<relationship fault: 0x62194c0 'Tenants'>";
TimeStamp = nil;
Title = "Toko Guna Bangunan Jaya";
URLs = "<relationship fault: 0x6219440 'URLs'>";
Website = nil;
Zip = 11510;
pinAndLineNumber = 1;
updated = 0;
}) returned nil value for section name key path 'Building.Title'. Object will be placed in unnamed section
分组数据这个错误日志出现,当我想在分组数据NSFetchedResultsController使用sectionNameKeyPath:@“Building.Title”。像这样的东西coredata错误,因为sectionNameKeyPath或NSFetchedResultsController
NSFetchedResultsController * FRC=[[[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:[ThreadClass managedObjectContext] sectionNameKeyPath:@"Building.Title" cacheName:Nil]autorelease];
任何人都可以帮我解决这个建筑可以是零?因为我想告诉像
谢谢,我在NSManagedObject子类中使用了一个新的readonly属性,它解决了我的问题,即“部分名称关键路径的返回nil值”。 – 2012-10-05 07:18:41