我在 Xcode 3.2中创建了一个 Core Data 模型,在 Xcode 4.2中升级之后,我添加了 NSManagedObject 子类的一个新实体(参考新实体)。
首先,它看起来很奇怪因为它和原来的不在同一个组里。下面是我的 xcode 4.2的图片(AlkitabDB 是我在 xcode 3.2中创建的,EndeDB 是当前 xcode 版本(4.2)中的新版本:
第二件事,我让它保持原样,然后以与第一个实体相同的方式访问第二个实体(新的实体) ,然后出现标题为的错误。
这里有一个错误:
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"}
}
, reason=The model used to open the store is incompatible with the one used to create the store}, {
metadata = {
NSPersistenceFrameworkVersion = 320;
NSStoreModelVersionHashes = {
AlkitabDB = <d02ac5f8 be6ab0b3 9add450a ca202ac0 ebd1e860 cbb578c2 3d45d462 998d2ccd>;
};
NSStoreModelVersionHashesVersion = 3;
NSStoreModelVersionIdentifiers = (
);
NSStoreType = SQLite;
NSStoreUUID = "4F2EE7FF-463B-4055-BBED-8E603CDBDF59";
"_NSAutoVacuumLevel" = 2;
};
reason = "The model used to open the store is incompatible with the one used to create the store";
}
我之前就在寻找解决方案,结果发现我应该从模拟器中删除应用程序并重新运行该应用程序,但它没有起作用。 有人知道解决这个问题的办法吗? 请帮帮我。