我的iPhone core data应用程序在第一次运行时运行良好，但之后运行时崩溃_Iphone_Objective C_Core Data

我的iPhone core data应用程序在第一次运行时运行良好，但之后运行时崩溃

iphone objective-c core-data

我的iPhone core data应用程序在第一次运行时运行良好，但之后运行时崩溃,iphone,objective-c,core-data,Iphone,Objective C,Core Data,我的应用程序基于两个类：Jam和jamiitem，每个类都有一个用于显示/添加项目的TableViewController。 2010-09-29 07:20:00.443 Jams[12451:207] Serious application error. Exception was caught during Core Data change processing. This is usually a bug within an observer of NSManagedObjectCo

我的应用程序基于两个类：

Jam

和

jamiitem

，每个类都有一个用于显示/添加项目的TableViewController。

2010-09-29 07:20:00.443 Jams[12451:207] Serious application error.  Exception was caught during Core Data change processing.  This is usually a bug within an observer of NSManagedObjectContextObjectsDidChangeNotification.  [<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name. with userInfo {
        NSTargetObjectUserInfoKey = "<UINavigationItem: 0x5b4dc30>";
        NSUnknownUserInfoKey = name;
    }
    2010-09-29 07:20:00.446 Jams[12451:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name.'
    *** Call stack at first throw:
    (
        0   CoreFoundation                      0x02577919 __exceptionPreprocess + 185
        1   libobjc.A.dylib                     0x026c55de objc_exception_throw + 47
        2   CoreFoundation                      0x02577851 -[NSException raise] + 17
        3   Foundation                          0x000d96b1 -[NSObject(NSKeyValueCoding) valueForUndefinedKey:] + 279
        4   Foundation                          0x00040868 _NSGetUsingKeyValueGetter + 147
        5   Foundation                          0x0003fd2e -[NSObject(NSKeyValueCoding) valueForKey:] + 278
        6   Foundation                          0x00043535 -[NSObject(NSKeyValueCoding) valueForKeyPath:] + 381
        7   Foundation                          0x000f7c4f -[NSSortDescriptor compareObject:toObject:] + 128
        8   CoreData                            0x0237cb5e +[NSFetchedResultsController(PrivateMethods) _insertIndexForObject:inArray:lowIdx:highIdx:sortDescriptors:] + 286
        9   CoreData                            0x0237d1b2 -[NSFetchedResultsController(PrivateMethods) _postprocessInsertedObjects:] + 402
        10  CoreData                            0x023831bc -[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:] + 1804
        11  Foundation                          0x00035c1d _nsnote_callback + 145
        12  CoreFoundation                      0x0254fcf9 __CFXNotificationPost_old + 745
        13  CoreFoundation                      0x024cf11a _CFXNotificationPostNotification + 186
        14  Foundation                          0x0002b7c2 -[NSNotificationCenter postNotificationName:object:userInfo:] + 134
        15  CoreData                            0x022bf519 -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:] + 89
        16  CoreData                            0x0232eb33 -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:withDeletions:withUpdates:withRefreshes:] + 259
        17  CoreData                            0x022a1f78 -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:] + 1352
        18  CoreData                            0x022dba15 -[NSManagedObjectContext save:] + 149
        19  JamsApp                             0x000064b3 -[JamsListTableViewController insertJamItem:] + 168
        20  JamsApp                             0x00006405 -[JamsListTableViewController selectedJamItem:] + 43
        21  JamsApp                             0x00003f41 -[JamItemListTableViewController tableView:didSelectRowAtIndexPath:] + 143
        22  UIKit                               0x0033d718 -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] + 1140
        23  UIKit                               0x00333ffe -[UITableView _userSelectRowAtIndexPath:] + 219
        24  Foundation                          0x0004acea __NSFireDelayedPerform + 441
        25  CoreFoundation                      0x02558d43 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 19
        26  CoreFoundation                      0x0255a384 __CFRunLoopDoTimer + 1364
        27  CoreFoundation                      0x024b6d09 __CFRunLoopRun + 1817
        28  CoreFoundation                      0x024b6280 CFRunLoopRunSpecific + 208
        29  CoreFoundation                      0x024b61a1 CFRunLoopRunInMode + 97
        30  GraphicsServices                    0x02ddc2c8 GSEventRunModal + 217
        31  GraphicsServices                    0x02ddc38d GSEventRun + 115
        32  UIKit                               0x002d9b58 UIApplicationMain + 1160
        33  JamsApp                             0x00001c0c main + 102
        34  JamsApp                             0x00001b9d start + 53
    )
    terminate called after throwing an instance of 'NSException'

该模型包含两个类的两个实体，它们之间存在可选的一对一关系

JamItem

有一个名称字段和一个价格字段<代码>堵塞有一个数量字段。这两个实体有相应的

NSManagedObject

类。

2010-09-29 07:20:00.443 Jams[12451:207] Serious application error.  Exception was caught during Core Data change processing.  This is usually a bug within an observer of NSManagedObjectContextObjectsDidChangeNotification.  [<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name. with userInfo {
        NSTargetObjectUserInfoKey = "<UINavigationItem: 0x5b4dc30>";
        NSUnknownUserInfoKey = name;
    }
    2010-09-29 07:20:00.446 Jams[12451:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name.'
    *** Call stack at first throw:
    (
        0   CoreFoundation                      0x02577919 __exceptionPreprocess + 185
        1   libobjc.A.dylib                     0x026c55de objc_exception_throw + 47
        2   CoreFoundation                      0x02577851 -[NSException raise] + 17
        3   Foundation                          0x000d96b1 -[NSObject(NSKeyValueCoding) valueForUndefinedKey:] + 279
        4   Foundation                          0x00040868 _NSGetUsingKeyValueGetter + 147
        5   Foundation                          0x0003fd2e -[NSObject(NSKeyValueCoding) valueForKey:] + 278
        6   Foundation                          0x00043535 -[NSObject(NSKeyValueCoding) valueForKeyPath:] + 381
        7   Foundation                          0x000f7c4f -[NSSortDescriptor compareObject:toObject:] + 128
        8   CoreData                            0x0237cb5e +[NSFetchedResultsController(PrivateMethods) _insertIndexForObject:inArray:lowIdx:highIdx:sortDescriptors:] + 286
        9   CoreData                            0x0237d1b2 -[NSFetchedResultsController(PrivateMethods) _postprocessInsertedObjects:] + 402
        10  CoreData                            0x023831bc -[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:] + 1804
        11  Foundation                          0x00035c1d _nsnote_callback + 145
        12  CoreFoundation                      0x0254fcf9 __CFXNotificationPost_old + 745
        13  CoreFoundation                      0x024cf11a _CFXNotificationPostNotification + 186
        14  Foundation                          0x0002b7c2 -[NSNotificationCenter postNotificationName:object:userInfo:] + 134
        15  CoreData                            0x022bf519 -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:] + 89
        16  CoreData                            0x0232eb33 -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:withDeletions:withUpdates:withRefreshes:] + 259
        17  CoreData                            0x022a1f78 -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:] + 1352
        18  CoreData                            0x022dba15 -[NSManagedObjectContext save:] + 149
        19  JamsApp                             0x000064b3 -[JamsListTableViewController insertJamItem:] + 168
        20  JamsApp                             0x00006405 -[JamsListTableViewController selectedJamItem:] + 43
        21  JamsApp                             0x00003f41 -[JamItemListTableViewController tableView:didSelectRowAtIndexPath:] + 143
        22  UIKit                               0x0033d718 -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] + 1140
        23  UIKit                               0x00333ffe -[UITableView _userSelectRowAtIndexPath:] + 219
        24  Foundation                          0x0004acea __NSFireDelayedPerform + 441
        25  CoreFoundation                      0x02558d43 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 19
        26  CoreFoundation                      0x0255a384 __CFRunLoopDoTimer + 1364
        27  CoreFoundation                      0x024b6d09 __CFRunLoopRun + 1817
        28  CoreFoundation                      0x024b6280 CFRunLoopRunSpecific + 208
        29  CoreFoundation                      0x024b61a1 CFRunLoopRunInMode + 97
        30  GraphicsServices                    0x02ddc2c8 GSEventRunModal + 217
        31  GraphicsServices                    0x02ddc38d GSEventRun + 115
        32  UIKit                               0x002d9b58 UIApplicationMain + 1160
        33  JamsApp                             0x00001c0c main + 102
        34  JamsApp                             0x00001b9d start + 53
    )
    terminate called after throwing an instance of 'NSException'

这两个列表都基于表列表视图控制器，并以Apple站点上的Recipes示例为模型。

JamListTableViewController

显示添加到列表中的所有

jamiitem

实例。单击“添加”时，将创建一个新的

JamItemListTableViewController

实例，并将其推送到nav堆栈上。这将列出已创建的

JamItem

实例。当选择

jamiitem

时，

-（void）tableView:（UITableView*）tableView didSelectRowAtIndexPath:（NSIndexPath*）indexPath

方法创建

jamiitem

的实例，并通过委托将其传递回

JamListTableViewController

。然后创建一个新的

Jam

实例，并将

JamItem

添加到其中，然后保存。

2010-09-29 07:20:00.443 Jams[12451:207] Serious application error.  Exception was caught during Core Data change processing.  This is usually a bug within an observer of NSManagedObjectContextObjectsDidChangeNotification.  [<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name. with userInfo {
        NSTargetObjectUserInfoKey = "<UINavigationItem: 0x5b4dc30>";
        NSUnknownUserInfoKey = name;
    }
    2010-09-29 07:20:00.446 Jams[12451:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name.'
    *** Call stack at first throw:
    (
        0   CoreFoundation                      0x02577919 __exceptionPreprocess + 185
        1   libobjc.A.dylib                     0x026c55de objc_exception_throw + 47
        2   CoreFoundation                      0x02577851 -[NSException raise] + 17
        3   Foundation                          0x000d96b1 -[NSObject(NSKeyValueCoding) valueForUndefinedKey:] + 279
        4   Foundation                          0x00040868 _NSGetUsingKeyValueGetter + 147
        5   Foundation                          0x0003fd2e -[NSObject(NSKeyValueCoding) valueForKey:] + 278
        6   Foundation                          0x00043535 -[NSObject(NSKeyValueCoding) valueForKeyPath:] + 381
        7   Foundation                          0x000f7c4f -[NSSortDescriptor compareObject:toObject:] + 128
        8   CoreData                            0x0237cb5e +[NSFetchedResultsController(PrivateMethods) _insertIndexForObject:inArray:lowIdx:highIdx:sortDescriptors:] + 286
        9   CoreData                            0x0237d1b2 -[NSFetchedResultsController(PrivateMethods) _postprocessInsertedObjects:] + 402
        10  CoreData                            0x023831bc -[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:] + 1804
        11  Foundation                          0x00035c1d _nsnote_callback + 145
        12  CoreFoundation                      0x0254fcf9 __CFXNotificationPost_old + 745
        13  CoreFoundation                      0x024cf11a _CFXNotificationPostNotification + 186
        14  Foundation                          0x0002b7c2 -[NSNotificationCenter postNotificationName:object:userInfo:] + 134
        15  CoreData                            0x022bf519 -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:] + 89
        16  CoreData                            0x0232eb33 -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:withDeletions:withUpdates:withRefreshes:] + 259
        17  CoreData                            0x022a1f78 -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:] + 1352
        18  CoreData                            0x022dba15 -[NSManagedObjectContext save:] + 149
        19  JamsApp                             0x000064b3 -[JamsListTableViewController insertJamItem:] + 168
        20  JamsApp                             0x00006405 -[JamsListTableViewController selectedJamItem:] + 43
        21  JamsApp                             0x00003f41 -[JamItemListTableViewController tableView:didSelectRowAtIndexPath:] + 143
        22  UIKit                               0x0033d718 -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] + 1140
        23  UIKit                               0x00333ffe -[UITableView _userSelectRowAtIndexPath:] + 219
        24  Foundation                          0x0004acea __NSFireDelayedPerform + 441
        25  CoreFoundation                      0x02558d43 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 19
        26  CoreFoundation                      0x0255a384 __CFRunLoopDoTimer + 1364
        27  CoreFoundation                      0x024b6d09 __CFRunLoopRun + 1817
        28  CoreFoundation                      0x024b6280 CFRunLoopRunSpecific + 208
        29  CoreFoundation                      0x024b61a1 CFRunLoopRunInMode + 97
        30  GraphicsServices                    0x02ddc2c8 GSEventRunModal + 217
        31  GraphicsServices                    0x02ddc38d GSEventRun + 115
        32  UIKit                               0x002d9b58 UIApplicationMain + 1160
        33  JamsApp                             0x00001c0c main + 102
        34  JamsApp                             0x00001b9d start + 53
    )
    terminate called after throwing an instance of 'NSException'

当应用程序在模拟器上更新时，我可以完美地运行它，并且第一次使用干净的数据库运行它

JamItemListTableViewController
始终有效，我可以愉快地从列表中添加和删除“jam项”。但是，如果我停止应用程序并重新运行，然后尝试将新的
jamiitem
添加到jam列表（
JamListTableViewController
），当
JamListTableViewController
调用
[jam.managedObjectContext save:&error]
时，它会崩溃，我得到下面的错误，我想这就是它试图按名称排序的地方。

JamItemListTableViewController
中的
NSFetchedResultsController
配置为按名称排序。
JamItemListTableViewController
中的
NSFetchedResultsController
由
JamItem.name

2010-09-29 07:20:00.443 Jams[12451:207] Serious application error. Exception was caught during Core Data change processing. This is usually a bug within an observer of NSManagedObjectContextObjectsDidChangeNotification. [<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name. with userInfo { NSTargetObjectUserInfoKey = "<UINavigationItem: 0x5b4dc30>"; NSUnknownUserInfoKey = name; } 2010-09-29 07:20:00.446 Jams[12451:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name.' *** Call stack at first throw: ( 0 CoreFoundation 0x02577919 __exceptionPreprocess + 185 1 libobjc.A.dylib 0x026c55de objc_exception_throw + 47 2 CoreFoundation 0x02577851 -[NSException raise] + 17 3 Foundation 0x000d96b1 -[NSObject(NSKeyValueCoding) valueForUndefinedKey:] + 279 4 Foundation 0x00040868 _NSGetUsingKeyValueGetter + 147 5 Foundation 0x0003fd2e -[NSObject(NSKeyValueCoding) valueForKey:] + 278 6 Foundation 0x00043535 -[NSObject(NSKeyValueCoding) valueForKeyPath:] + 381 7 Foundation 0x000f7c4f -[NSSortDescriptor compareObject:toObject:] + 128 8 CoreData 0x0237cb5e +[NSFetchedResultsController(PrivateMethods) _insertIndexForObject:inArray:lowIdx:highIdx:sortDescriptors:] + 286 9 CoreData 0x0237d1b2 -[NSFetchedResultsController(PrivateMethods) _postprocessInsertedObjects:] + 402 10 CoreData 0x023831bc -[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:] + 1804 11 Foundation 0x00035c1d _nsnote_callback + 145 12 CoreFoundation 0x0254fcf9 __CFXNotificationPost_old + 745 13 CoreFoundation 0x024cf11a _CFXNotificationPostNotification + 186 14 Foundation 0x0002b7c2 -[NSNotificationCenter postNotificationName:object:userInfo:] + 134 15 CoreData 0x022bf519 -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:] + 89 16 CoreData 0x0232eb33 -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:withDeletions:withUpdates:withRefreshes:] + 259 17 CoreData 0x022a1f78 -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:] + 1352 18 CoreData 0x022dba15 -[NSManagedObjectContext save:] + 149 19 JamsApp 0x000064b3 -[JamsListTableViewController insertJamItem:] + 168 20 JamsApp 0x00006405 -[JamsListTableViewController selectedJamItem:] + 43 21 JamsApp 0x00003f41 -[JamItemListTableViewController tableView:didSelectRowAtIndexPath:] + 143 22 UIKit 0x0033d718 -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] + 1140 23 UIKit 0x00333ffe -[UITableView _userSelectRowAtIndexPath:] + 219 24 Foundation 0x0004acea __NSFireDelayedPerform + 441 25 CoreFoundation 0x02558d43 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 19 26 CoreFoundation 0x0255a384 __CFRunLoopDoTimer + 1364 27 CoreFoundation 0x024b6d09 __CFRunLoopRun + 1817 28 CoreFoundation 0x024b6280 CFRunLoopRunSpecific + 208 29 CoreFoundation 0x024b61a1 CFRunLoopRunInMode + 97 30 GraphicsServices 0x02ddc2c8 GSEventRunModal + 217 31 GraphicsServices 0x02ddc38d GSEventRun + 115 32 UIKit 0x002d9b58 UIApplicationMain + 1160 33 JamsApp 0x00001c0c main + 102 34 JamsApp 0x00001b9d start + 53 ) terminate called after throwing an instance of 'NSException'
我希望这是有意义的，因为我数周来一直在努力寻找解决办法。我想我可能已经（或没有）释放了一个对象，这会导致
JamItem
列表标记它已经更新，并开始尝试重新排序它的列表。

2010-09-29 07:20:00.443 Jams[12451:207] Serious application error. Exception was caught during Core Data change processing. This is usually a bug within an observer of NSManagedObjectContextObjectsDidChangeNotification. [<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name. with userInfo { NSTargetObjectUserInfoKey = "<UINavigationItem: 0x5b4dc30>"; NSUnknownUserInfoKey = name; } 2010-09-29 07:20:00.446 Jams[12451:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name.' *** Call stack at first throw: ( 0 CoreFoundation 0x02577919 __exceptionPreprocess + 185 1 libobjc.A.dylib 0x026c55de objc_exception_throw + 47 2 CoreFoundation 0x02577851 -[NSException raise] + 17 3 Foundation 0x000d96b1 -[NSObject(NSKeyValueCoding) valueForUndefinedKey:] + 279 4 Foundation 0x00040868 _NSGetUsingKeyValueGetter + 147 5 Foundation 0x0003fd2e -[NSObject(NSKeyValueCoding) valueForKey:] + 278 6 Foundation 0x00043535 -[NSObject(NSKeyValueCoding) valueForKeyPath:] + 381 7 Foundation 0x000f7c4f -[NSSortDescriptor compareObject:toObject:] + 128 8 CoreData 0x0237cb5e +[NSFetchedResultsController(PrivateMethods) _insertIndexForObject:inArray:lowIdx:highIdx:sortDescriptors:] + 286 9 CoreData 0x0237d1b2 -[NSFetchedResultsController(PrivateMethods) _postprocessInsertedObjects:] + 402 10 CoreData 0x023831bc -[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:] + 1804 11 Foundation 0x00035c1d _nsnote_callback + 145 12 CoreFoundation 0x0254fcf9 __CFXNotificationPost_old + 745 13 CoreFoundation 0x024cf11a _CFXNotificationPostNotification + 186 14 Foundation 0x0002b7c2 -[NSNotificationCenter postNotificationName:object:userInfo:] + 134 15 CoreData 0x022bf519 -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:] + 89 16 CoreData 0x0232eb33 -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:withDeletions:withUpdates:withRefreshes:] + 259 17 CoreData 0x022a1f78 -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:] + 1352 18 CoreData 0x022dba15 -[NSManagedObjectContext save:] + 149 19 JamsApp 0x000064b3 -[JamsListTableViewController insertJamItem:] + 168 20 JamsApp 0x00006405 -[JamsListTableViewController selectedJamItem:] + 43 21 JamsApp 0x00003f41 -[JamItemListTableViewController tableView:didSelectRowAtIndexPath:] + 143 22 UIKit 0x0033d718 -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] + 1140 23 UIKit 0x00333ffe -[UITableView _userSelectRowAtIndexPath:] + 219 24 Foundation 0x0004acea __NSFireDelayedPerform + 441 25 CoreFoundation 0x02558d43 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 19 26 CoreFoundation 0x0255a384 __CFRunLoopDoTimer + 1364 27 CoreFoundation 0x024b6d09 __CFRunLoopRun + 1817 28 CoreFoundation 0x024b6280 CFRunLoopRunSpecific + 208 29 CoreFoundation 0x024b61a1 CFRunLoopRunInMode + 97 30 GraphicsServices 0x02ddc2c8 GSEventRunModal + 217 31 GraphicsServices 0x02ddc38d GSEventRun + 115 32 UIKit 0x002d9b58 UIApplicationMain + 1160 33 JamsApp 0x00001c0c main + 102 34 JamsApp 0x00001b9d start + 53 ) terminate called after throwing an instance of 'NSException'
这是错误的转储：

2010-09-29 07:20:00.443 Jams[12451:207] Serious application error. Exception was caught during Core Data change processing. This is usually a bug within an observer of NSManagedObjectContextObjectsDidChangeNotification. [<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name. with userInfo { NSTargetObjectUserInfoKey = "<UINavigationItem: 0x5b4dc30>"; NSUnknownUserInfoKey = name; } 2010-09-29 07:20:00.446 Jams[12451:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UINavigationItem 0x5b4dc30> valueForUndefinedKey:]: this class is not key value coding-compliant for the key name.' *** Call stack at first throw: ( 0 CoreFoundation 0x02577919 __exceptionPreprocess + 185 1 libobjc.A.dylib 0x026c55de objc_exception_throw + 47 2 CoreFoundation 0x02577851 -[NSException raise] + 17 3 Foundation 0x000d96b1 -[NSObject(NSKeyValueCoding) valueForUndefinedKey:] + 279 4 Foundation 0x00040868 _NSGetUsingKeyValueGetter + 147 5 Foundation 0x0003fd2e -[NSObject(NSKeyValueCoding) valueForKey:] + 278 6 Foundation 0x00043535 -[NSObject(NSKeyValueCoding) valueForKeyPath:] + 381 7 Foundation 0x000f7c4f -[NSSortDescriptor compareObject:toObject:] + 128 8 CoreData 0x0237cb5e +[NSFetchedResultsController(PrivateMethods) _insertIndexForObject:inArray:lowIdx:highIdx:sortDescriptors:] + 286 9 CoreData 0x0237d1b2 -[NSFetchedResultsController(PrivateMethods) _postprocessInsertedObjects:] + 402 10 CoreData 0x023831bc -[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:] + 1804 11 Foundation 0x00035c1d _nsnote_callback + 145 12 CoreFoundation 0x0254fcf9 __CFXNotificationPost_old + 745 13 CoreFoundation 0x024cf11a _CFXNotificationPostNotification + 186 14 Foundation 0x0002b7c2 -[NSNotificationCenter postNotificationName:object:userInfo:] + 134 15 CoreData 0x022bf519 -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:] + 89 16 CoreData 0x0232eb33 -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:withDeletions:withUpdates:withRefreshes:] + 259 17 CoreData 0x022a1f78 -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:] + 1352 18 CoreData 0x022dba15 -[NSManagedObjectContext save:] + 149 19 JamsApp 0x000064b3 -[JamsListTableViewController insertJamItem:] + 168 20 JamsApp 0x00006405 -[JamsListTableViewController selectedJamItem:] + 43 21 JamsApp 0x00003f41 -[JamItemListTableViewController tableView:didSelectRowAtIndexPath:] + 143 22 UIKit 0x0033d718 -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] + 1140 23 UIKit 0x00333ffe -[UITableView _userSelectRowAtIndexPath:] + 219 24 Foundation 0x0004acea __NSFireDelayedPerform + 441 25 CoreFoundation 0x02558d43 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 19 26 CoreFoundation 0x0255a384 __CFRunLoopDoTimer + 1364 27 CoreFoundation 0x024b6d09 __CFRunLoopRun + 1817 28 CoreFoundation 0x024b6280 CFRunLoopRunSpecific + 208 29 CoreFoundation 0x024b61a1 CFRunLoopRunInMode + 97 30 GraphicsServices 0x02ddc2c8 GSEventRunModal + 217 31 GraphicsServices 0x02ddc38d GSEventRun + 115 32 UIKit 0x002d9b58 UIApplicationMain + 1160 33 JamsApp 0x00001c0c main + 102 34 JamsApp 0x00001b9d start + 53 ) terminate called after throwing an instance of 'NSException'

2010-09-29 07:20:00.443阻塞[12451:207]严重的应用程序错误。在核心数据更改处理期间捕获异常。这通常是NSManagedObjectContextObjectsIDChangeNotification的观察者中的错误。[valueForUndefinedKey:]：此类不符合密钥名称的键值编码。使用userInfo{ NSTargetObjectUserInfoKey=“”； NSUnknownUserInfoKey=名称； } 2010-09-29 07:20:00.446阻塞[12451:207]***由于未捕获的异常“NSUnknownKeyException”而终止应用程序，原因：“[valueForUndefinedKey:]：此类不符合密钥名称的键值编码。” ***第一次抛出时调用堆栈： ( 0 CoreFoundation 0x02577919例外预处理+185 1 libobjc.A.dylib 0x026c55de objc_异常_抛出+47 2芯基础0x02577851-[N异常升高]+17 3基金会0x000 0D96B1- [ NSObjor（NKEY ValueCudid）ValueFunDealEdKEY：] + 279 4基金会0x000 040868，NGETUSENG KEY ValueGETER + 147 5基金会0x000 03FD2e - [ NSObjices（NSKEY ValueCudid）ValueFoiKe:] + 278 6基金会0x000 043535 - [ NSObjor（NSKEY ValueCoDIN）ValueFoePixPosie:] + 381 7基金会0x000 0F7C4F- [ NSSORtRealthor COMPRACKObjult:ToObjult:] + 128 8 CoreData 0x0237cb5e+[NSFetchedResultsController（PrivateMethods）\ u insertIndexForObject:inArray:lowIdx:highIdx:sortDescriptors:+286 9 CoreData 0x0237d1b2-[NSFetchedResultsController（PrivateMethods）\u后处理插入对象：+402 10 CoreData 0x023831bc-[NSFetchedResultsController（PrivateMethods）\u managedObjectContextDidChange:+1804 11基金会0x000 035C1D NoNo.KelBead + 145 12 CoreFoundation 0x0254fcf9\uuuCFxNotificationPost\uOld+745 13 CoreFoundation 0x024cf11a _CFX通知后通知+186 14基金会0x000 02B7C2- [ NSnPosiCICTeCsPoestPosiTrimeTrimeNo:对象：用户信息：] + 134 15 CoreData 0x022bf519-[NSManagedObjectContext（\u NSInternalNotificationHandling）\u PostObjectsIDChangeNotificationWithUserInfo:+89 16 CoreData 0x0232eb33-[NSManagedObjectContext（\u NSInternalChangeProcessing）\u createAndPostChangeNotification:带删除：带更新：带刷新：+259 17 CoreData 0x022a1f78-[NSManagedObjectContext（\u NSInternalChangeProcessing）\u processRecentChanges:+1352 18 CoreData 0x022dba15-[NSManagedObjectContext保存：][149 19 JAMSAP 0x000064b3-[JamsListTableViewController insertJamItem:+168 20 JamsApp 0x00006405-[JamsListTableViewController selectedJamItem:+43 21 JamsApp 0x00003f41-[JamItemListTableViewController tableView:didSelectRowAtIndexPath:+143 22 UIKit 0x0033d718-[UITableView\u selectRowAtIndexPath:动画：scrollPos