我一直在閱讀大量的CoreData + iCloud並瞭解它的任何內容，但很直接。但是，我很早就陷入了困境，並且很好奇你是否有任何想法。CoreData + iCloud在iOS8中使用Xcode6和Swift
我的工作臺： Xcode6.1.1，斯威夫特，CoreData添加了iCloud的權利（在iOS8.1模擬器測試，以及iOS8.1設備）
看到自己，簡單地開始了新的「辛格在Xcode中查看應用程序「項目，勾選」使用核心數據「複選框。要啓用的iCloud，我調用coordinator!.addPersistentStoreWithType(NSSQLiteStoreType, configuration:URL:options:error:)
我還添加了觀察員NSPersistentStoreCoordinatorStoresWillChangeNotification，NSPersistentStoreCoordinatorStoresDidChangeNotification，並且NSPersistentStoreDidImportUbiquitousContentChangesNotification前加入
let storeOptions = [
NSPersistentStoreUbiquitousContentNameKey: "iCloudTest"
]
。
當我運行應用程序的第一次，我的控制檯輸出看起來是這樣的：
storesDidChange: NSConcreteNotification 0x15d6b890 {name = NSPersistentStoreCoordinatorStoresDidChangeNotification; object = <NSPersistentStoreCoordinator: 0x15e96380>; userInfo = {
added = (
"<NSSQLCore: 0x15e9a1b0> (URL: file:///var/mobile/Containers/Data/Application/F2E684E6-6B7B-4429-B9CD-24C45DE18D27/Documents/CoreDataUbiquitySupport/mobile~BB56F5F3-5448-41A3-A142-921D99A85855/iCloudTest/1660860A-83E1-4906-BEB8-DAF02DAC62B0/store/iCloudTest.sqlite)"
);
}}
2015-01-16 22:17:51.367 iCloudTest[783:414835] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](808): CoreData: Ubiquity: mobile~BB56F5F3-5448-41A3-A142-921D99A85855:iCloudTest
Using local storage: 1
managedObjectContext: Optional(<NSManagedObjectContext: 0x15d69340>)
2015-01-16 22:17:51.815 iCloudTest[783:414857] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](808): CoreData: Ubiquity: mobile~BB56F5F3-5448-41A3-A142-921D99A85855:iCloudTest
Using local storage: 0
正如Design for iCloud Programming Guide的檢查點說，我應該看到Using local store: 1然後Using local storage: 0後不久（在1-5秒內）。到現在爲止還挺好。我很高興。
現在，在不改變一行代碼，只需重新運行該應用程序，將導致以下日誌輸出：
storesDidChange: NSConcreteNotification 0x166606f0 {name = NSPersistentStoreCoordinatorStoresDidChangeNotification; object = <NSPersistentStoreCoordinator: 0x165485b0>; userInfo = {
added = (
"<NSSQLCore: 0x1658dfb0> (URL: file:///var/mobile/Containers/Data/Application/A742A53E-6785-40AC-A21A-16D4BB5F332E/Documents/CoreDataUbiquitySupport/mobile~9CB93B5A-F976-4AB8-B1B3-290F18DE796A/iCloudTest/0A12A44B-599B-49DD-8AD8-546EFD4E26DC/store/iCloudTest.sqlite)"
);
}}
2015-01-16 22:08:55.133 iCloudTest[770:412842] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](808): CoreData: Ubiquity: mobile~9CB93B5A-F976-4AB8-B1B3-290F18DE796A:iCloudTest
Using local storage: 1
managedObjectContext: Optional(<NSManagedObjectContext: 0x1658f2e0>)
2015-01-16 22:11:29.005 iCloudTest[770:412855] -[PFUbiquitySafeSaveFile waitForFileToDownload:](489): CoreData: Ubiquity: <PFUbiquityBaseline: 0x165a5950>(0)
permanentLocation: <PFUbiquityLocation: 0x165a6690>: /var/mobile/Library/Mobile Documents/iCloud~com~mycompany~iCloudTest/CoreData/iCloudTest/.baseline/iCloudTest/47DEQpj8HBSa~_TImW~5JCeuQeRkm5NMpJWZG3hSuFU=/baseline.zip
safeLocation: <PFUbiquityLocation: 0x165a5ac0>: /var/mobile/Library/Mobile Documents/iCloud~com~mycompany~iCloudTest/CoreData/iCloudTest/.baseline/iCloudTest/47DEQpj8HBSa~_TImW~5JCeuQeRkm5NMpJWZG3hSuFU=/mobile~9CB93B5A-F976-4AB8-B1B3-290F18DE796A
currentLocation: <PFUbiquityLocation: 0x165a6690>: /var/mobile/Library/Mobile Documents/iCloud~com~mycompany~iCloudTest/CoreData/iCloudTest/.baseline/iCloudTest/47DEQpj8HBSa~_TImW~5JCeuQeRkm5NMpJWZG3hSuFU=/baseline.zip
storeName: iCloudTest
modelVersionHash: 47DEQpj8HBSa~_TImW~5JCeuQeRkm5NMpJWZG3hSuFU=
baselineArchiveLocation: <PFUbiquityLocation: 0x165a6690>: /var/mobile/Library/Mobile Documents/iCloud~com~mycompany~iCloudTest/CoreData/iCloudTest/.baseline/iCloudTest/47DEQpj8HBSa~_TImW~5JCeuQeRkm5NMpJWZG3hSuFU=/baseline.zip
Download failed for file, error: Error Domain=NSCocoaErrorDomain Code=512 "The file download timed out." UserInfo=0x16670090 {NSLocalizedDescription=The file download timed out.}
2015-01-16 22:11:29.009 iCloudTest[770:412855] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](808): CoreData: Ubiquity: mobile~9CB93B5A-F976-4AB8-B1B3-290F18DE796A:iCloudTest
Using local storage: 0
突然，icloud是演戲了！我在Using local storage: 1和Using local storage 0之間計時了大約90年代。
這是需要擔心的事嗎？我害怕如果同步需要我的用戶這麼長時間，這將是一個非常討厭的經歷（只是認爲使用應用程序1分鐘+突然iCloud內容彈出...）我想因爲Using local storage 0最終會觸發，iCloud同步已啓用？但是，Debug導航器中的iCloud Report顯示Status: iCloud not configured。
我做錯了什麼？
PS：這是筆直蘋果樣板只有額外的代碼來添加iCloud權利。