iPhone / iOS应用程序正在使用CoreData SQLite(NSSQLiteStoreType)iCloud iOS.当应用程序第一次安装(或通过
xcode删除和重新安装后)开始,并且iCloud中的先前的应用程序数据从先前安装或同一帐户中的其他设备发生,则会出现以下错误,然后是60秒的重试延迟,然后成功迁移到iCloud.结果是应用程序升级时,应用程序的用户认为他们的数据丢失.然而,在60秒的延迟之后,数据被恢复.错误和一些代码如下.
什么原因导致这个错误在哪里可以进一步了解这个错误？
[4972:2014294] CoreData: iCloud: Error: initial sync notification returned an error (Error Domain=BRCloudDocsErrorDomain Code=12 “The operation couldn’t be completed. (BRCloudDocsErrorDomain error 12.)”)
[4972:2014294] -PFUbiquitySetupAssistant finishSetupWithRetry:: CoreData: Ubiquity: : Retrying after delay: 60 Error Domain=BRCloudDocsErrorDomain Code=12 “The operation couldn’t be completed. (BRCloudDocsErrorDomain error 12.)”
这里是一个代码段和更详细的日志来提供更多的上下文.
从应用程序委托：
- (void)applicationDidFinishLaunching:(UIApplication *)application {
... standard iCloud and app setup ...
NSManagedObjectContext *context = [self managedObjectContext];
...
... query the db ...
}
/**
Returns the managed object context for the application.
If the context doesn't already exist,it is created and bound to the persistent store coordinator for the application.
*/
- (NSManagedObjectContext *) managedObjectContext {
if (managedObjectContext != nil) {
return managedObjectContext;
}
NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator];
if (coordinator != nil) {
managedObjectContext = [[NSManagedObjectContext alloc] init];
[managedObjectContext setPersistentStoreCoordinator: coordinator];
}
managedObjectContext.mergePolicy = NSMergeByPropertyStoreTrumpMergePolicy;
return managedObjectContext;
}
...
/**
Returns the managed object model for the application.
If the model doesn't already exist,it is created by merging all of the models found in the application bundle.
*/
- (NSManagedObjectModel *)managedObjectModel {
if (managedObjectModel != nil) {
return managedObjectModel;
}
managedObjectModel = [[NSManagedObjectModel mergedModelFromBundles:nil] retain];
return managedObjectModel;
}
...
/**
Returns the persistent store coordinator for the application.
If the coordinator doesn't already exist,it is created and the application's store added to it.
*/
- (NSPersistentStoreCoordinator *)persistentStoreCoordinator {
if (persistentStoreCoordinator != nil) {
return persistentStoreCoordinator;
}
NSURL *storeUrl = [NSURL fileURLWithPath: [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES) lastObject] stringByAppendingPathComponent: @"myapp.sqlite"]];
NSLog(@"App Store URL : %@",storeUrl);
NSError *error = nil;
persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: [self managedObjectModel]];
NSDictionary *storeOptions;
storeOptions = @{
NSMigratePersistentStoresAutomaticallyOption : @YES,NSInferMappingModelAutomaticallyOption : @YES,NSPersistentStoreUbiquitousContentNameKey: @"AppCloudStore"
};
#ifdef FREE
storeOptions = @{
NSMigratePersistentStoresAutomaticallyOption : @YES,NSPersistentStoreUbiquitousContentNameKey: @"FreeAppCloudStore"
};
#endif
// Register for Notifications
NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
[notificationCenter addObserver:self
selector:@selector(storesDidChange:)
name:NSPersistentStoreCoordinatorStoresDidChangeNotification
object:self.persistentStoreCoordinator];
[notificationCenter addObserver:self
selector:@selector(persistentStoreDidImportUbiquitousContentChanges:)
name:NSPersistentStoreDidImportUbiquitousContentChangesNotification
object:self.persistentStoreCoordinator];
[notificationCenter addObserverForName:NSPersistentStoreCoordinatorStoresWillChangeNotification
object:self.persistentStoreCoordinator
queue:[NSOperationQueue mainQueue]
usingBlock:^(NSNotification *note) {
NSLog(@"Stores Will Change...");
if ([self.managedObjectContext hasChanges]) {
NSError *saveError;
if (![self.managedObjectContext save:&saveError]) {
NSLog(@"Save error: %@",saveError);
}
} else {
// drop any managed object references
[self.managedObjectContext reset];
}
}];
NSPersistentStore *store = [persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:storeOptions error:&error];
if (store == nil || error != nil) {
NSLog(@"Error: %@,%@",error,[error userInfo]);
abort();
}
NSURL *finaliCloudURL = [store URL];
NSLog(@"Created persistent store okay. Final iCloud URL is: %@",finaliCloudURL);
return persistentStoreCoordinator;
}
...
- (void)persistentStoreDidImportUbiquitousContentChanges:(NSNotification *)notification {
NSLog(@"persistentStoreDidImportUbiquitousContentChanges: Called. Content has changed via Core Data iCloud: *******************************************");
// Received and merge updates from iCloud
[self.managedObjectContext mergeChangesFromContextDidSaveNotification:notification];
[self notifyAndRefreshAllDataDueToCloudEvent];
}
...
- (void)storesDidChange:(NSNotification *)notification {
// Tell me: why did my stores changes?
NSNumber *transitionType = [notification.userInfo objectForKey:NSPersistentStoreUbiquitousTransitionTypeKey];
int theCause = [transitionType intValue];
NSLog(@"storesDidChange: NSPersistentStoreCoordinatorStoresDidChange Notification = %@",notification);
switch (theCause) {
case NSPersistentStoreUbiquitousTransitionTypeAccountAdded: {
NSLog(@"storesDidChange: Account Added");
// account was added
}
break;
case NSPersistentStoreUbiquitousTransitionTypeAccountRemoved: {
NSLog(@"storesDidChange: Account Removed");
// account was removed
}
break;
case NSPersistentStoreUbiquitousTransitionTypeContentRemoved: {
NSLog(@"storesDidChange: Content Removed");
// content was removed
}
break;
case NSPersistentStoreUbiquitousTransitionTypeInitialImportCompleted: {
NSLog(@"storesDidChange: Initial Import:");
// initial import
}
break;
default:
break;
}
...
[[NSNotificationCenter defaultCenter]
postNotificationName:@"*****DidChangeByPersistentStoreChangesNotification"
object:self];
[[NSNotificationCenter defaultCenter]
postNotificationName:@"*****DidChangeByPersistentStoreChangesNotification"
object:self];
[[NSNotificationCenter defaultCenter]
postNotificationName:@"*****DidChangeByPersistentStoreChangesNotification"
object:self];
}
更详细的日志：
2015-05-12 10:22:23.367 [4972:2014228] storesDidChange: NSPersistentStoreCoordinatorStoresDidChange Notification = NSConcreteNotification 0x17005f470 {name = NSPersistentStoreCoordinatorStoresDidChangeNotification; object = <NSPersistentStoreCoordinator: 0x170072100>; userInfo = {
added = (
"<NSSQLCore: 0x12dd100b0> (URL: file:///var/mobile/Containers/Data/Application/****/Documents/CoreDataUbiquitySupport/mobile~****-7B78C4F2FDB2/FreeAppCloudStore/2***/store/app.sqlite)"
);
}}
2015-05-12 10:22:23.409 [4972:2014228] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](808): CoreData: Ubiquity: mobile~****:FreeAppCloudStore
Using local storage: 1
2015-05-12 10:22:23.410 [4972:2014228] Created persistent store okay. Final iCloud URL is: file:///var/mobile/Containers/Data/Application/****/store/app.sqlite
2015-05-12 10:22:23.477 [4972:2014228] AppTableViewController:viewWillAppear: enter
2015-05-12 10:22:23.478 [4972:2014228] getSharedAdBannerView: enter
2015-05-12 10:22:23.518 [4972:2014228] queryDidUpdate: MSMetadataQuery Notification: - NSMetadataQueryDidFinishGatheringNotification
2015-05-12 10:22:23.519 [4972:2014228] queryDidUpdate: NSMetadataQuery returned 25 results
2015-05-12 10:22:23.524 [4972:2014228] setProcessTimer: 15.000000
2015-05-12 10:22:23.531 [4972:2014228] TableViewController:viewDidAppear: enter
2015-05-12 10:22:23.531 [4972:2014228] TableViewController:loadData (or reload): enter
2015-05-12 10:22:23.582 [4972:2014294] CoreData: iCloud: Error: initial sync notification returned an error (Error Domain=BRCloudDocsErrorDomain Code=12 "The operation couldn't be completed. (BRCloudDocsErrorDomain error 12.)")
2015-05-12 10:22:23.594 [4972:2014294] -[PFUbiquitySetupAssistant finishSetupWithRetry:](826): CoreData: Ubiquity: <PFUbiquitySetupAssistant: 0x12de18940>: Retrying after delay: 60
Error Domain=BRCloudDocsErrorDomain Code=12 "The operation couldn't be completed. (BRCloudDocsErrorDomain error 12.)"
2015-05-12 10:22:23.854 [4972:2014228] didFailToReceiveAdWithError
2015-05-12 10:22:55.150 [4972:2014228] bannerViewDidLoadAd
2015-05-12 10:23:24.178 [4972:2014228] queryDidUpdate: MSMetadataQuery Notification: - NSMetadataQueryDidUpdateNotification
2015-05-12 10:23:24.178 [4972:2014228] queryDidUpdate: NSMetadataQuery returned 25 results
2015-05-12 10:23:25.039 [4972:2014228] Stores Will Change...
2015-05-12 10:23:25.101 [4972:2014228] storesDidChange: NSPersistentStoreCoordinatorStoresDidChange Notification = NSConcreteNotification 0x170254940 {name = NSPersistentStoreCoordinatorStoresDidChangeNotification; object = <NSPersistentStoreCoordinator: 0x170072100>; userInfo = {
NSPersistentStoreUbiquitousTransitionTypeKey = 4;
added = (
"<NSSQLCore: 0x12dd100b0> (URL: file:///var/mobile/Containers/Data/Application/****/FreeAppCloudStore/20EF5D1C-4748-4AB2-BCE1-91B228437D77/store/app.sqlite)"
);
removed = (
"<NSSQLCore: 0x12dd100b0> (URL: file:///var/mobile/Containers/Data/Application/*****/store/app.sqlite)"
);
}}
2015-05-12 10:23:25.101 [4972:2014646] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](808): CoreData: Ubiquity: mobile~*****FreeAppCloudStore
Using local storage: 0
解决方法
我希望我的答案可以为那些遇到这个错误的人节省很多时间.
当应用程序的删除和安装之间的时间小于一定间隔时,会发生此错误.我不知道是否和我一样,我的是15秒.
愚蠢的错误,浪费了几个小时.
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