我使用新CoreData Recipes项目（iPhoneCoreDataRecipes Sample Code）中的示例代码在现有iOS应用程序中构建iCloud同步，该应用程序使用CoreData SQLite“数据库”与非常复杂的数据模型结合使用许多太多的关系（也许这是我的问题的原因或至少是一个提示）。
在此之前，应用程序工作正常，没有任何关于数据库的警告。但是现在，当我将实体添加到上下文或尝试保存它时，调试器会因为这样的错误而疯狂：
+[PFUbiquityPeerRange(UbiquityMethods) peerRangeForLocalPrimaryKey:inStoreNamed:andEntityName:inManagedObjectContext:](71): CoreData: Ubiquity: Error or too many ranges for entity named: Room, ranges: (
"<PFUbiquityPeerRange: 0x627e0c0> (entity: PFUbiquityPeerRange; id: 0x627c830 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p12> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e300> (entity: PFUbiquityPeerRange; id: 0x627cfc0 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p13> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e350> (entity: PFUbiquityPeerRange; id: 0x627cfd0 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p21> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e3a0> (entity: PFUbiquityPeerRange; id: 0x627d300 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p42> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e3f0> (entity: PFUbiquityPeerRange; id: 0x627d310 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p49> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e440> (entity: PFUbiquityPeerRange; id: 0x627cea0 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p66> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e490> (entity: PFUbiquityPeerRange; id: 0x627ceb0 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p69> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e4e0> (entity: PFUbiquityPeerRange; id: 0x627cec0 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p75> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e530> (entity: PFUbiquityPeerRange; id: 0x627d120 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p82> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e580> (entity: PFUbiquityPeerRange; id: 0x627d130 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p94> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e5d0> (entity: PFUbiquityPeerRange; id: 0x627d140 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p96> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e620> (entity: PFUbiquityPeerRange; id: 0x627d150 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p97> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e670> (entity: PFUbiquityPeerRange; id: 0x627d160 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p132> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e6c0> (entity: PFUbiquityPeerRange; id: 0x627d170 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p140> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e710> (entity: PFUbiquityPeerRange; id: 0x627d180 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p156> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e760> (entity: PFUbiquityPeerRange; id: 0x627d190 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p157> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e7b0> (entity: PFUbiquityPeerRange; id: 0x627cd10 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p163> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e800> (entity: PFUbiquityPeerRange; id: 0x627cd20 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p177> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e850> (entity: PFUbiquityPeerRange; id: 0x627cd30 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p186> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e8a0> (entity: PFUbiquityPeerRange; id: 0x627cd40 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p192> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e8f0> (entity: PFUbiquityPeerRange; id: 0x627cd50 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p198> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e940> (entity: PFUbiquityPeerRange; id: 0x627cd60 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p199> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e990> (entity: PFUbiquityPeerRange; id: 0x627cd70 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p217> ; data: <fault>)",
"<PFUbiquityPeerRange: 0x627e9e0> (entity: PFUbiquityPeerRange; id: 0x627cd80 <x-coredata://A3F63A39-9034-4F81-8B35-911CC481B6C5/PFUbiquityPeerRange/p222> ; data: <fault>)")
, error: (null)
在抛出大量错误后，我收到内存警告，然后应用程序崩溃。我花了很多时间但没有找到关于UbiquityMethods添加的任何内容，或者找出错误的实际原因。再次：在使用CoreData Recipes示例项目中的代码创建NSManagedObjectContext和NSPersistantStoreCoordinator之前，应用程序运行正常。
我很感激任何帮助，当然我会让你及时了解这个主题！
最佳本杰明
答案 0 :(得分：0)
在配置NSPersistentStoreCoordinator实例时，检查您是否正确设置了权利文件中的密钥，并为NSPersistentStoreUbiquitousContentNameKey和NSPersistentStoreUbiquitousContentURLKey密钥设置了正确的值。请参阅I'm not getting the NSPersistentStoreDidImportUbiquitousContentChangesNotification (with code sample)了解样本
答案 1 :(得分：0)