iCloud异常 - 导入事务日志时出错

Question

我正在尝试将iCloud集成到我的一个iOS应用程序中.起初一切正常,但每个人都知道,然后iCloud停止工作,应用程序崩溃.事务日志似乎有些问题,但我无法弄清楚具体的来源.试图捕捉异常也是不可能的.

这是iCloud创建的控制台输出:

2014-02-07 10:23:45.118 MyApp[1410:3707] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](754): CoreData: Ubiquity:  mobile~5508B01E-F77F-4AF1-88DE-2E2F8DC55932:MyAppCloudDB
Using local storage: 1

2014-02-07 10:23:45.892 MyApp[1410:3707] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](754): CoreData: Ubiquity:  mobile~5508B01E-F77F-4AF1-88DE-2E2F8DC55932:MyAppCloudDB
Using local storage: 0

2014-02-07 10:24:28.632 MyApp[1410:1803] -[_PFUbiquityRecordImportOperation main](731): CoreData: Ubiquity:  Error importing transaction log: <PFUbiquityTransactionLog: 0x16177920>
transactionLogLocation: <PFUbiquityLocation: 0x160c3e80>: /var/mobile/Library/Mobile Documents/M889WYL2LY~com~example~MyApp/MyAppTransactionLogs/User~37B9682D-CED2-5F79-AF06-1FE99E7DEE9E/MyAppCloudDB/SZPp~RKudtVxEBMJzTVTupTv0WjG6i~o9Vj54dlknjc=/8AB09D17-5856-49B9-BE4C-A56451FB1EF4.1.cdt
transactionNumber: 34
, exception: *** setObjectForKey: key cannot be nil
User Info: (null)

2014-02-07 10:24:28.661 MyApp[1410:1803] -[_PFUbiquityRecordsImporter operation:failedWithError:](1003): CoreData: Ubiquity:  Import operation encountered an error: Error Domain=NSCocoaErrorDomain Code=134060 "The operation couldn’t be completed. (Cocoa error 134060.)" UserInfo=0x162a8b20 {exception=*** setObjectForKey: key cannot be nil}
userInfo: {
exception = "*** setObjectForKey: key cannot be nil";
}. While trying to import the log file at the URL: <PFUbiquityTransactionLog: 0x16177920>
transactionLogLocation: <PFUbiquityLocation: 0x160c3e80>: /var/mobile/Library/Mobile Documents/M889WYL2LY~com~example~MyApp/MyAppTransactionLogs/User~37B9682D-CED2-5F79-AF06-1FE99E7DEE9E/MyAppCloudDB/SZPp~RKudtVxEBMJzTVTupTv0WjG6i~o9Vj54dlknjc=/8AB09D17-5856-49B9-BE4C-A56451FB1EF4.1.cdt
transactionNumber: 34

2014-02-07 10:24:28.686 MyApp[1410:1803] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** setObjectForKey: key cannot be nil'
*** First throw call stack:

(0x30b47e83 0x3aea46c7 0x30a82ecb 0x309dd0cb 0x3099f061 0x309a1841 0x31476aa5 0x3151a96d 0x3b38de7b 0x3b38af93 0x3b38e745 0x3b38e9c5 0x3b4b8dff 0x3b4b8cc4)
libc++abi.dylib: terminating with uncaught exception of type NSException

有谁知道如何解决这个问题？

Answer 1

这些是内部 iCloud 异常，不幸的是您对此无能为力。你无法抓住他们，即使你抓住了他们，你也没有办法对付他们。iCloud 不够透明，一旦出现问题，你就会陷入困境。

可能有帮助的一件事非常重要：如果您在此应用程序中仍然支持 iOS 6 或 iOS 5，请立即停止。至少在这些版本上运行时不支持 iCloud。在iOS 7上iCloud有了很大的改进，虽然不完美但不太可能出现这种麻烦。