I have a nasty bug and I would appreciate any guidance pointing me in the general direction of a solution. Occasionally, I get the following exception which pertains to calling initWithCoder on 3 different NSManagedObject subclasses in my core data model. If I delete the app from my device and reload it, or reset content on the simulator the exception goes away. No where in my code do I explicitly call initWithCoder on an NSManagedObject Subclass.
The bug seems to arise randomly after editing random parts of my source code. Any ideas on where to begin?
2014-01-11 15:59:22.078 Flip Evaluator and Manager[354:a0b] -[SellingCosts initWithCoder:]: unrecognized selector sent to instance 0xc2cec80
2014-01-11 15:59:22.079 Flip Evaluator and Manager[354:a0b] CoreData: error: exception during fetchRowForObjectID: -[SellingCosts initWithCoder:]: unrecognized selector sent to instance 0xc2cec80 with userInfo of (null)
2014-01-11 15:59:22.081 Flip Evaluator and Manager[354:a0b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[SellingCosts initWithCoder:]: unrecognized selector sent to instance 0xc2cec80'
*** First throw call stack:
(
0 CoreFoundation 0x01e9a5e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x01c1d8b6 objc_exception_throw + 44
2 CoreFoundation 0x01f37903 -[NSObject(NSObject) doesNotRecognizeSelector:] + 275
3 CoreFoundation 0x01e8a90b ___forwarding___ + 1019
4 CoreFoundation 0x01e8a4ee _CF_forwarding_prep_0 + 14
5 Foundation 0x01830b2a _decodeObjectBinary + 3498
6 Foundation 0x0182fc15 _decodeObject + 340
7 Foundation 0x0182fab9 -[NSKeyedUnarchiver decodeObjectForKey:] + 181
8 Foundation 0x018a168d +[NSKeyedUnarchiver unarchiveObjectWithData:] + 106
9 Foundation 0x018202e5 -[_NSKeyedUnarchiveFromDataTransformer transformedValue:] + 47
10 CoreData 0x0064bd09 _prepareResultsFromResultSet + 4105
11 CoreData 0x00649583 newFetchedRowsForFetchPlan_MT + 1795
12 CoreData 0x0063448e -[NSSQLCore newRowsForFetchPlan:] + 526
13 CoreData 0x0065302e -[NSSQLCore fetchRowForObjectID:] + 1198
14 CoreData 0x00650798 -[NSSQLCore newValuesForObjectWithID:withContext:error:] + 296
15 CoreData 0x00650667 -[NSPersistentStoreCoordinator(_NSInternalMethods) newValuesForObjectWithID:withContext:error:] + 71
16 CoreData 0x0064fa3b _PFFaultHandlerLookupRow + 411
17 CoreData 0x0064f897 -[NSFaultHandler fulfillFault:withContext:forIndex:] + 39
18 CoreData 0x0064f473 _PF_FulfillDeferredFault + 259
19 CoreData 0x0064f2c6 _sharedIMPL_pvfk_core + 70
20 CoreData 0x00653cd5 -[NSManagedObject(_PFDynamicAccessorsAndPropertySupport) _genericValueForKey:withIndex:flags:] + 85
21 CoreData 0x0068d781 _PF_Handler_Public_GetProperty + 161
22 CoreData 0x0068d685 -[NSManagedObject valueForKey:] + 149
23 Flip Evaluator and Manager 0x00030c4c -[OzCalculator sumTheValuesInSet:withAttributeKeyForValue:] + 428
24 Flip Evaluator and Manager 0x0002f7d5 -[OzCalculator sumMoreCostsAndUpdateDataModelFor:] + 165
25 Flip Evaluator and Manager 0x0002edc1 -[OzCalculator performAllCalculationsOnProperty:] + 817
26 Flip Evaluator and Manager 0x00002d37 -[OzPropertyConverter createAManagedPropertyFromAnEvaluatedProperty:] + 1175
27 Flip Evaluator and Manager 0x00041233 -[OzHaveYouPurchasedThisProperty goForwardToNextView] + 307
28 libobjc.A.dylib 0x01c2f874 -[NSObject performSelector:withObject:withObject:] + 77
29 UIKit 0x0098d0c2 -[UIApplication sendAction:to:from:forEvent:] + 108
30 UIKit 0x0098d04e -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 61
31 UIKit 0x00a850c1 -[UIControl sendAction:to:forEvent:] + 66
32 UIKit 0x00a85484 -[UIControl _sendActionsForEvents:withEvent:] + 577
33 UIKit 0x00a841fd -[UIControl touchesBegan:withEvent:] + 254
34 UIKit 0x009ca34b -[UIWindow _sendTouchesForEvent:] + 386
35 UIKit 0x009cb184 -[UIWindow sendEvent:] + 1232
36 UIKit 0x0099ee86 -[UIApplication sendEvent:] + 242
37 UIKit 0x0098918f _UIApplicationHandleEventQueue + 11421
38 CoreFoundation 0x01e2383f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
39 CoreFoundation 0x01e231cb __CFRunLoopDoSources0 + 235
40 CoreFoundation 0x01e4029e __CFRunLoopRun + 910
41 CoreFoundation 0x01e3fac3 CFRunLoopRunSpecific + 467
42 CoreFoundation 0x01e3f8db CFRunLoopRunInMode + 123
43 GraphicsServices 0x02c2a9e2 GSEventRunModal + 192
44 GraphicsServices 0x02c2a809 GSEventRun + 104
45 UIKit 0x0098bd3b UIApplicationMain + 1225
46 Flip Evaluator and Manager 0x0002e5dd main + 141
47 libdyld.dylib 0x030c1725 start + 0
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Code:
//
// SellingCosts.h
// Flip Evaluator and Manager
//
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
@class Cost, Property, TotalCosts;
@interface SellingCosts : NSManagedObject
@property (nonatomic, strong) NSNumber * deedPrep;
@property (nonatomic, strong) NSNumber * realtyCommisionAmount;
@property (nonatomic, strong) NSNumber * realtyCommisionPercent;
@property (nonatomic, strong) NSNumber * totalCost;
@property (nonatomic, strong) NSSet *moreCosts;
@property (nonatomic, strong) Property *property;
@property (nonatomic, strong) TotalCosts *totalCosts;
@property (nonatomic, strong) NSNumber * transferTaxAmount;
@property (nonatomic, strong) NSNumber * transferTaxPercent;
@property (nonatomic, strong) NSNumber *totalIncompleteCost;
@property (nonatomic, strong) NSNumber *totalCompleteCost;
@end
Here is the method that is called before things go wrong:
-(NSInteger)sumTheValuesInSet:(NSMutableSet *)set withAttributeKeyForValue:(NSString *)attributeKey
{
NSInteger sumToReturn = 0;
for (id obj in set) {
sumToReturn = sumToReturn +[[obj valueForKey:attributeKey] integerValue];
}
return sumToReturn;
}
The method enumerates through Cost objects in the NSSet [sellingCosts valueForKey:@"moreCosts"].
Here is the model for the Cost object//
// Cost.h
// Flip Evaluator and Manager
//
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
@class BuyingCosts, HoldingCosts, SellingCosts, OtherCosts, TotalCosts;
@interface Cost : NSManagedObject
@property (nonatomic, strong) BuyingCosts *buyingCosts;
@property (nonatomic, strong) HoldingCosts *holdingCosts;
@property (nonatomic, strong) SellingCosts *sellingCosts;
@property (nonatomic, strong) OtherCosts *otherCosts;
@property (nonatomic, strong) NSString * name;
@property (nonatomic, strong) TotalCosts *incompleteCosts;
@property (nonatomic, strong) TotalCosts *completedCosts;
@property (nonatomic, strong) NSNumber *complete;
@property (nonatomic, strong) id costType;
@property (nonatomic, strong) NSNumber *amount;
@end
