ios 我如何解决 NSInternalInconsistencyException'，原因：'+entityForName：失败报告
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时间：2020-08-30 18:43:40 来源:igfitidea点击:
How can I solve NSInternalInconsistencyException', reason: '+entityForName: fail report
提问by Csabi
My code looks like that:
我的代码看起来像这样：
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();
}
in .hheader file I have this:
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;
It should save data using core data but it falls on error:
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
)
in NavTest.xcdatamodelI have two entytis Obrta whith attributesand Evetwhich is default.
在NavTest.xcdatamodel我有两个entytis Obrta whith attributes，Evet这是默认的。
- (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_;
}
What am I missing?
我错过了什么？
采纳答案by ElonChan
Change the code in fetchedResultsController:
更改代码fetchedResultsController：
NSEntityDescription *entity = [NSEntityDescription entityForName:@"Obrat" inManagedObjectContext:self.managedObjectContext];
to
到
NSEntityDescription *entity = [NSEntityDescription entityForName:@"Obrta" inManagedObjectContext:self.managedObjectContext];
Entity namedyou create with Xcode must keep same with the NSEntityDescriptionin your code
Entity named您使用 Xcode 创建的必须与NSEntityDescription代码中的保持一致
回答by ahruss
You say you have an entity named "Obrta", but the code is creating an object of type "Obrat". Fixing that typo should fix your issue.
您说您有一个名为 的实体"Obrta"，但代码正在创建一个类型为 的对象"Obrat"。修复该错字应该可以解决您的问题。
