The thing is, i have a UIManagedDocument in some local directory. Im setting it ubiquitous. Here is the code :
-(void)queryGatheredInfo:(NSNotification*)notification{
NSLog(@"Query gathered info!");
[[NSNotificationCenter defaultCenter]removeObserver:self name:NSMetadataQueryDidFinishGatheringNotification object:self.documentQuery];
NSLog(@"Removed AppDelegate as an observer for NSMetadataQueryDidFinishGatheringNotification.");
[self.documentQuery disableUpdates];
NSMetadataQuery* tempQuery=[notification object];
if(tempQuery.resultCount){
NSLog(@"Query Found Items:");
for (int i=0;i<tempQuery.resultCount;i++){
NSMetadataItem* item=[tempQuery resultAtIndex:i];
NSURL* itemURL=[item valueForAttribute:NSMetadataItemURLKey];
NSString* itemFSName=[[self filePackageURLForCloudURL:itemURL]lastPathComponent];
NSLog(@"Item %d: %@",i,itemFSName);
if([itemFSName isEqualToString:kUSER_DOCUMENT_NAME]){
NSLog(@"FOUND A SAVED DOCUMENT IN iCLOUD!");
[self loadDocumentFromiCloudAtURL:[itemURL URLByDeletingLastPathComponent]withPersistentStoreOptions:[self getPersistentOptionsFromDocumentMetadataAtURL:itemURL]];
break;
}
}
}else{
NSLog(@"Query did not found a document in iCloud!");
if([[NSFileManager defaultManager]fileExistsAtPath:[[self localDocumentURL]path]]){
NSLog(@"Document was found in local documents directory.");
[self transferFileFromLocalDirectory:[self localDocumentURL] ToiCloudDirectory:[[self iCloudDocumentsURL]URLByAppendingPathComponent:kUSER_DOCUMENT_NAME]];
}else{
NSLog(@"Creating new document in iCloud!");
[self createNewDocumentIniCloud];
}
}
[self.documentQuery stopQuery];
}
-(void)transferFileFromLocalDirectory:(NSURL*)localURL ToiCloudDirectory:(NSURL*)iCloudURL{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSError* error=nil;
BOOL flag=[[NSFileManager defaultManager]setUbiquitous:YES itemAtURL:localURL destinationURL:iCloudURL error:&error];
if(flag){
NSLog(@"Successfully set document ubiquitous");
UIManagedDocument* doc=[[UIManagedDocument alloc]initWithFileURL:iCloudURL];
doc.persistentStoreOptions=[self getPersistentOptionsFromDocumentMetadataAtURL:[iCloudURL URLByAppendingPathComponent:@"DocumentMetadata.plist"]];
[self openDocument:doc];
}else{
NSLog(@"There was an error setting document Ubiquitous.\n%@",error);
}
});
}
And after this, it starts to download copies of itself for 2 times. So at the end i get the 3 same items in my core data. But if i delete the app, and run it again, it finds document in icloud, loads it, and it looks alright, no duplicate items. My question is: what's happening when i set my document ubiquitous? why does it load duplicates?
Here is output when the item is set ubiquitous:
2013-12-01 22:02:56.452 iGymPRO[5517:60b] iCloud is available
2013-12-01 22:02:56.456 iGymPRO[5517:60b] Added AppDelegate as an observer for NSMetadataQueryDidFinishGatheringNotification.
2013-12-01 22:02:56.458 iGymPRO[5517:60b] Query started!
2013-12-01 22:02:56.500 iGymPRO[5517:60b] Query gathered info!
2013-12-01 22:02:56.502 iGymPRO[5517:60b] Removed AppDelegate as an observer for NSMetadataQueryDidFinishGatheringNotification.
2013-12-01 22:02:56.503 iGymPRO[5517:60b] Query did not found a document in iCloud!
2013-12-01 22:02:56.569 iGymPRO[5517:60b] Document was found in local documents directory.
2013-12-01 22:02:56.609 iGymPRO[5517:1803] Successfully set document ubiquitous
2013-12-01 22:02:56.983 iGymPRO[5517:3e03] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](754): CoreData: Ubiquity: mobile~5815F60F-67BF-4FD1-8376-B509672B469D:UserDataDocumentContent
Using local storage: 1
2013-12-01 22:02:57.055 iGymPRO[5517:60b] Opened document
2013-12-01 22:02:57.057 iGymPRO[5517:60b] Removing delegate as an observer for UIDocumentStateChangedNotification
2013-12-01 22:02:57.059 iGymPRO[5517:60b] Listening to UIDocumentStateChangedNotification
2013-12-01 22:02:57.060 iGymPRO[5517:60b] Managed Object Context is ready to use! Dismissing loading screen
2013-12-01 22:02:57.925 iGymPRO[5517:4707] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](754): CoreData: Ubiquity: mobile~5815F60F-67BF-4FD1-8376-B509672B469D:UserDataDocumentContent
Using local storage: 0
2013-12-01 22:03:02.650 iGymPRO[5517:4707] -[PFUbiquitySetupAssistant finishSetupWithRetry:](811): CoreData: Ubiquity: <PFUbiquitySetupAssistant: 0x1463c2f0>: Retrying after delay: 60
2013-12-01 22:04:09.390 iGymPRO[5517:470b] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](754): CoreData: Ubiquity: mobile~5815F60F-67BF-4FD1-8376-B509672B469D:UserDataDocumentContent
Using local storage: 0
2013-12-01 22:04:13.875 iGymPRO[5517:470b] -[PFUbiquitySetupAssistant finishSetupWithRetry:](811): CoreData: Ubiquity: <PFUbiquitySetupAssistant: 0x1463c2f0>: Retrying after delay: 120
2013-12-01 22:06:59.170 iGymPRO[5517:4717] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](754): CoreData: Ubiquity: mobile~5815F60F-67BF-4FD1-8376-B509672B469D:UserDataDocumentContent
Using local storage: 0
2013-12-01 22:13:34.370 iGymPRO[5517:4227] __45-[PFUbiquityFilePresenter processPendingURLs]_block_invoke(305): CoreData: Ubiquity: Librian returned a serious error for starting downloads Error Domain=LibrarianErrorDomain Code=1 "The operation couldn’t be completed. (LibrarianErrorDomain error 1 - Unable to initiate download.)" UserInfo=0x1467b370 {Item Errors={
"file:///private/var/mobile/Library/Mobile%20Documents/476DPCGZ25~trenbolone~SP~iGym/CoreData/UserDataDocumentContent/mobile~5815F60F-67BF-4FD1-8376-B509672B469D/UserDataDocumentContent/GxrbFeXHGcfBNM0uvaCzuqHE4XmcYCiCKbgWv7OTybM=/receipt.0.cdt" = "Error Domain=UBErrorDomain Code=10 \"The operation couldn\U2019t be completed. (UBErrorDomain error 10 - Error Domain=UBErrorDomain Code=10 \"The operation couldn\U2019t be completed. (UBErrorDomain error 10 - The item can't be found on disk, is not yet scanned or was deleted)\" UserInfo=0x14570a30 {NSDescription=The item can't be found on disk, is not yet scanned or was deleted})\" UserInfo=0x1463c6a0 {NSDescription=Error Domain=UBErrorDomain Code=10 \"The operation couldn\U2019t be completed. (UBErrorDomain error 10 - The item can't be found on disk, is not yet scanned or was deleted)\" UserInfo=0x14570a30 {NSDescription=The item can't be found on disk, is not yet scanned or was deleted}}";
}, NSUnderlyingError=0x1470d510 "The operation couldn’t be completed. (UBErrorDomain error 10 - The item can't be found on disk, is not yet scanned or was deleted)", NSDescription=Unable to initiate download.} with userInfo {
"Item Errors" = {
"file:///private/var/mobile/Library/Mobile%20Documents/476DPCGZ25~trenbolone~SP~iGym/CoreData/UserDataDocumentContent/mobile~5815F60F-67BF-4FD1-8376-B509672B469D/UserDataDocumentContent/GxrbFeXHGcfBNM0uvaCzuqHE4XmcYCiCKbgWv7OTybM=/receipt.0.cdt" = "Error Domain=UBErrorDomain Code=10 \"The operation couldn\U2019t be completed. (UBErrorDomain error 10 - Error Domain=UBErrorDomain Code=10 \"The operation couldn\U2019t be completed. (UBErrorDomain error 10 - The item can't be found on disk, is not yet scanned or was deleted)\" UserInfo=0x14570a30 {NSDescription=The item can't be found on disk, is not yet scanned or was deleted})\" UserInfo=0x1463c6a0 {NSDescription=Error Domain=UBErrorDomain Code=10 \"The operation couldn\U2019t be completed. (UBErrorDomain error 10 - The item can't be found on disk, is not yet scanned or was deleted)\" UserInfo=0x14570a30 {NSDescription=The item can't be found on disk, is not yet scanned or was deleted}}";
};
NSDescription = "Unable to initiate download.";
NSUnderlyingError = "Error Domain=UBErrorDomain Code=10 \"The operation couldn\U2019t be completed. (UBErrorDomain error 10 - The item can't be found on disk, is not yet scanned or was deleted)\" UserInfo=0x145d6340 {NSDescription=The item can't be found on disk, is not yet scanned or was deleted}";
}
and this is output when i delete and run my app ( when everything loads fine)
2013-12-01 22:32:49.748 iGymPRO[5525:60b] iCloud is available
2013-12-01 22:32:49.754 iGymPRO[5525:60b] Added AppDelegate as an observer for NSMetadataQueryDidFinishGatheringNotification.
2013-12-01 22:32:49.756 iGymPRO[5525:60b] Query started!
2013-12-01 22:32:49.897 iGymPRO[5525:60b] Query gathered info!
2013-12-01 22:32:49.898 iGymPRO[5525:60b] Removed AppDelegate as an observer for NSMetadataQueryDidFinishGatheringNotification.
2013-12-01 22:32:49.899 iGymPRO[5525:60b] Query Found Items:
2013-12-01 22:32:49.959 iGymPRO[5525:60b] Item 0: Data Document
2013-12-01 22:32:49.960 iGymPRO[5525:60b] FOUND A SAVED DOCUMENT IN iCLOUD!
2013-12-01 22:32:50.031 iGymPRO[5525:60b] Opening document from iCloud
2013-12-01 22:32:54.203 iGymPRO[5525:5003] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](754): CoreData: Ubiquity: mobile~5815F60F-67BF-4FD1-8376-B509672B469D:UserDataDocumentContent
Using local storage: 1
2013-12-01 22:32:54.259 iGymPRO[5525:60b] Opened document
2013-12-01 22:32:54.260 iGymPRO[5525:60b] Removing delegate as an observer for UIDocumentStateChangedNotification
2013-12-01 22:32:54.261 iGymPRO[5525:60b] Listening to UIDocumentStateChangedNotification
2013-12-01 22:32:54.262 iGymPRO[5525:60b] Managed Object Context is ready to use! Dismissing loading screen
2013-12-01 22:33:57.635 iGymPRO[5525:1803] -[PFUbiquitySwitchboardEntryMetadata setUseLocalStorage:](754): CoreData: Ubiquity: mobile~5815F60F-67BF-4FD1-8376-B509672B469D:UserDataDocumentContent
Using local storage: 0
Happy to be corrected on this but I don't think this is the correct way to set a UIManagedDocument up to synch via iCloud. If you have a UIManagedDocument in a local directory you need to migrate the store itself to iCloud using the persistentStoreCoordinators
migratePersistentStoremethod in order to recreate the log files in iCloud.I am quite surprised it works at all when you delete and reinstall the app.