我如何解决NSInternalInconsistencyException'，原因：'+ entityForName：失败报告
我的代码如下所示：
NSManagedObjectContext *context = [self.fetchedResultsController managedObjectContext]; NSEntityDescription *entity = [[self.fetchedResultsController fetchRequest] entity]; NSManagedObject *newManagedObject = [NSEntityDescription insertNewObjectForEntityForName:[entity name] inManagedObjectContext:context]; // If appropriate, configure the new managed object. [newManagedObject setValue:[NSDate date] forKey:@"date"]; // Save the context. NSError *error = nil; if (![context save:&error]) { NSLog(@"Unresolved error %@, %@", error, [error userInfo]); abort(); } 在.h头文件中我有这个：
@interface TretiViewController : UIViewController <NSFetchedResultsControllerDelegate> { NSFetchedResultsController *fetchedResultsController_; NSManagedObjectContext *managedObjectContext_; // private NSString *accountID; } @property (nonatomic, retain) NSManagedObjectContext *managedObjectContext; @property (nonatomic, retain) NSFetchedResultsController *fetchedResultsController;
它应该使用核心数据保存数据，但出现错误：
NavTest[1372:207] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '+entityForName: could not locate an NSManagedObjectModel for entity name 'Obrat'' *** Call stack at first throw: ( 0 CoreFoundation 0x00f92be9 __exceptionPreprocess + 185 1 libobjc.A.dylib 0x010e75c2 objc_exception_throw + 47 2 CoreData 0x00cbf45b +[NSEntityDescription entityForName:inManagedObjectContext:] + 187 3 NavTest 0x0000c210 -[TretiViewController fetchedResultsController] + 187 4 NavTest 0x00007a76 -[TretiViewController ukazObrat0] + 38 5 UIKit 0x002c4a6e -[UIApplication sendAction:to:from:forEvent:] + 119 6 UIKit 0x003531b5 -[UIControl sendAction:to:forEvent:] + 67 7 UIKit 0x00355647 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527 8 UIKit 0x00354438 -[UIControl touchesBegan:withEvent:] + 277 9 UIKit 0x0054f987 _UIGestureRecognizerSortAndSendDelayedTouches + 3609 10 UIKit 0x005500fc _UIGestureRecognizerUpdateObserver + 927 11 CoreFoundation 0x00f73fbb __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 27 12 CoreFoundation 0x00f090e7 __CFRunLoopDoObservers + 295 13 CoreFoundation 0x00ed1bd7 __CFRunLoopRun + 1575 14 CoreFoundation 0x00ed1240 CFRunLoopRunSpecific + 208 15 CoreFoundation 0x00ed1161 CFRunLoopRunInMode + 97 16 GraphicsServices 0x018c7268 GSEventRunModal + 217 17 GraphicsServices 0x018c732d GSEventRun + 115 18 UIKit 0x002d342e UIApplicationMain + 1160 19 NavTest 0x00002594 main + 102 20 NavTest 0x00002525 start + 53 )
在NavTest.xcdatamodel我有两个entytis Obrta whith attributes和Evet是默认的。
- (NSFetchedResultsController *)fetchedResultsController { if (fetchedResultsController_ != nil) { return fetchedResultsController_; } // Set up the fetched results controller. // Create the fetch request for the entity. NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; // Edit the entity name as appropriate. NSEntityDescription *entity = [NSEntityDescription entityForName:@"Obrat" inManagedObjectContext:self.managedObjectContext]; [fetchRequest setEntity:entity]; // Set the batch size to a suitable number. [fetchRequest setFetchBatchSize:20]; // Edit the sort key as appropriate. NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"date" ascending:NO]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [fetchRequest setSortDescriptors:sortDescriptors]; // Edit the section name key path and cache name if appropriate. // nil for section name key path means "no sections". NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:self.managedObjectContext sectionNameKeyPath:nil cacheName:@"Root"]; aFetchedResultsController.delegate = self; self.fetchedResultsController = aFetchedResultsController; [aFetchedResultsController release]; [fetchRequest release]; [sortDescriptor release]; [sortDescriptors release]; NSError *error = nil; if (![fetchedResultsController_ performFetch:&error]) { // Replace this implementation with code to handle the error appropriately. // abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. If it is not possible to recover from the error, display an alert panel that instructs the user to quit the application by pressing the Home button. NSLog(@"Unresolved error %@, %@", error, [error userInfo]); abort(); } return fetchedResultsController_; }
我错过了什么？
更改fetchedResultsController的代码：
NSEntityDescription *entity = [NSEntityDescription entityForName:@"Obrat" inManagedObjectContext:self.managedObjectContext];
至
NSEntityDescription *entity = [NSEntityDescription entityForName:@"Obrta" inManagedObjectContext:self.managedObjectContext];
使用Xcode创build的Entity named必须与您的代码中的NSEntityDescription保持一致
你说你有一个名为"Obrta"的实体，但代码是创build一个"Obrat"types的对象。 修复这个错字可以解决你的问题。