本文介绍了从iCloud删除Core数据失败的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我试图使用 [NSPersistentStoreCoordinator removeUbiquitousContentAndPersistentStoreAtURL：options：error：] 从iCloud中删除Core Data。
但我得到奇怪的输出：

  __ 93+ [NSPersistentStoreCoordinator removeUbiquitousContentAndPersistentStoreAtURL：options：error：] _ block_invoke b $ b CoreData：Ubiquity：无法将内容目录移动到新位置：
 file：/// private / var / mobile / Library / Mobile％20Documents /< UBIQUITY_ID> / 
 New： /// private / var / mobile / Library / Mobile％20Documents / OldUbiquitousContent-mobile〜C9439AD0-1E87-4977-9C68-0674F5E2E93B 
错误域= NSCocoaErrorDomain Code = 513无法完成操作
（Cocoa错误513.）UserInfo = 0x181ab790 {NSSourceFilePathErrorKey = / private / var / mobile / Library / Mobile Documents /< UBIQUITY_ID>，
 NSUserStringVariant =（
 Move 
） NSFilePath = / private / var / mobile / Library / Mobile Documents /< UBIQUITY_ID>，
 NSDestinationFilePath = / private / var / mobile / Library / Mobile Documents / OldUbiquitousContent-mobile〜C9439AD0-1E87-4977-9C68-0674F5E2E93B ，
 NSUnderlyingError = 0x181aab50操作无法完成。不允许操作}

How to avoid it? I'm working on iCloud disable/enable feature. Details HERE

UPDATE:

  NSDictionary *iCloudOptions =
  [NSDictionary dictionaryWithObjectsAndKeys:kICloudContentNameKey, NSPersistentStoreUbiquitousContentNameKey,
   iCloudURL, NSPersistentStoreUbiquitousContentURLKey, nil];

// self.lastICloudStoreURL stores NSPersistentStore.URL after stack setup
  BOOL result = [NSPersistentStoreCoordinator removeUbiquitousContentAndPersistentStoreAtURL:self.lastICloudStoreURL
                                                                                     options:iCloudOptions
                                                                                       error:&error];

解决方案

Normally (before iOS7), you take the ubiquitousContentURL value from [fileManager URLForUbiquityContainerIdentifier:nil]; and pass it as an option called NSPersistentStore UbiquitousContentURLKey, and this is how iCloud know where to keep all of your data in the iCloud account.

In iOS 7 and Mac OS X we don't need to pass a value for that at all, and Apple call URLForUbiquitous ContainerIdentifier automatically under the hood for you.

So the solution looks like this:

NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:kICloudContentNameKey, NSPersistentStoreUbiquitousContentNameKey, nil];
NSURL *storeURL = [NSPersistentStore MR_urlForStoreName:[MagicalRecord defaultStoreName]];
BOOL result = [NSPersistentStoreCoordinator removeUbiquitousContentAndPersistentStoreAtURL:storeURL options:options error:&error];

I suggest you to check WWDC 2013 session 207 to get this things clearly.

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