我在xcode 3.2中创建了一个核心数据模型,并在Xcode 4.2中进行了升级,然后添加了NSManagedObject子类的新实体(请参阅新实体)。首先,它看起来很奇怪,因为它与旧的不在同一个组中。这是我的xcode 4.2上的图片(AlkitabDB是我在xcode 3.2中创建的图片,EndeDB是当前xcode版本(4.2)中的新图片:新实体未在xdatamodel中分组第二件事,让它保持原样,然后我以与第一个实体(旧的)相同的方式访问第二个实体(新的),并出现标题为错误的错误。这是错误:2012-01-16 21:13:38.496 iHuria[55953:207] Unresolved error Error Domain=NSCocoaErrorDomain Code=134100 "The operation couldn’t be completed. (Cocoa error 134100.)" UserInfo=0x8829cd0 {metadata=<CFBasicHash 0x882a370 [0x1839b38]>{type = immutable dict, count = 7,entries => 2 : <CFString 0x8829b90 [0x1839b38]>{contents = "NSStoreModelVersionIdentifiers"} = <CFArray 0x8829ff0 [0x1839b38]>{type = immutable, count = 0, values = ()} 4 : <CFString 0x8829bc0 [0x1839b38]>{contents = "NSPersistenceFrameworkVersion"} = <CFNumber 0x8829770 [0x1839b38]>{value = +320, type = kCFNumberSInt64Type} 6 : <CFString 0x8829bf0 [0x1839b38]>{contents = "NSStoreModelVersionHashes"} = <CFBasicHash 0x882a080 [0x1839b38]>{type = immutable dict, count = 1,entries => 0 : <CFString 0x882a010 [0x1839b38]>{contents = "AlkitabDB"} = <CFData 0x882a030 [0x1839b38]>{length = 32, capacity = 32, bytes = 0xd02ac5f8be6ab0b39add450aca202ac0 ... 3d45d462998d2ccd}} 7 : <CFString 0x10e3aa8 [0x1839b38]>{contents = "NSStoreUUID"} = <CFString 0x8829e60 [0x1839b38]>{contents = "4F2EE7FF-463B-4055-BBED-8E603CDBDF59"} 8 : <CFString 0x10e3948 [0x1839b38]>{contents = "NSStoreType"} = <CFString 0x10e3958 [0x1839b38]>{contents = "SQLite"} 9 : <CFString 0x8829c40 [0x1839b38]>{contents = "NSStoreModelVersionHashesVersion"} = <CFNumber 0x6b1c7c0 [0x1839b38]>{value = +3, type = kCFNumberSInt32Type} 10 : <CFString 0x8829c70 [0x1839b38]>{contents = "_NSAutoVacuumLevel"} = <CFString 0x882a0c0 [0x1839b38]>{contents = "2"}}}之前,我一直在寻找解决方案,但发现应该从模拟器中删除该应用程序,然后重新运行该应用程序,但该方法不起作用。有人知道这个问题的解决方案吗?请帮忙。
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