I have a simple application that is UITableViewthat is populated by a user filling in some UITextFieldsin another view. This information is stored in CoreData, and UITableViewupdated with NSFetchedResultsController.
Now I introduce iCloud in my environment. Regarding the previously asked question: The existing base database does not load in iCloud when iCloud is turned on in my application , I still have problems, but it was too dirty to update this question with my new code. I mean specifically WWDC 2013 CoreDataSessions, as well as this . Because my application is only iOS 7. I am new to iCloud development and am an intermediate programmer.
It’s hard for me to migrate existing data to iCloud when I upgrade the version of the App Store (not iCloud) to the version (iCloud). New data syncs perfectly.
I understand that I basically need to take my existing store without iCloud and transfer it to iCloud, but it just doesn't work for me.
Here is some code to illustrate what I'm working on:
Update
I survived and thought about it and deleted the extra code.
- (NSPersistentStoreCoordinator *)persistentStoreCoordinator
{
if (_persistentStoreCoordinator != nil) {
return _persistentStoreCoordinator;
}
NSURL *storeURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"Planner.sqlite"];
NSFileManager *fm = [NSFileManager defaultManager];
NSURL *url = [fm URLForUbiquityContainerIdentifier:nil];
NSError *error = nil;
_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
if (url)
{
NSLog(@"iCloud is enabled");
NSDictionary *options = @{
NSMigratePersistentStoresAutomaticallyOption : @YES,
NSInferMappingModelAutomaticallyOption : @YES,
};
NSPersistentStore *localStore = [_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:options error:&error];
[_persistentStoreCoordinator migratePersistentStore:localStore toURL:[self iCloudURL] options:[self iCloudStoreOptions] withType:NSSQLiteStoreType error:&error];
}
else
{
NSLog(@"iCloud is not enabled");
NSDictionary *options = @{
NSMigratePersistentStoresAutomaticallyOption : @YES,
NSInferMappingModelAutomaticallyOption : @YES
};
if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:[self iCloudURL] options:options error:&error])
{
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
}
dispatch_async(dispatch_get_main_queue(), ^{
[[NSNotificationCenter defaultCenter] postNotificationName:@"Reload" object:self userInfo:nil];
});
return _persistentStoreCoordinator;
}
I no longer call the migrateLocalStoreToiCloud method, but it is here for reference:
/*-(void)migrateLocalStoreToiCloud
{
//assuming you only have one store.
NSPersistentStore *store = [[_persistentStoreCoordinator persistentStores] firstObject];
NSPersistentStore *newStore = [_persistentStoreCoordinator migratePersistentStore:store
toURL:[self iCloudURL]
options:[self iCloudStoreOptions]
withType:NSSQLiteStoreType
error:nil];
[self reloadStore:newStore];
}
* /
Code storeURL, storeOptions, iCloudURLand iCloudStoreOptions:
- (NSURL *)iCloudURL
{
NSFileManager *fm = [NSFileManager defaultManager];
NSURL *url = [fm URLForUbiquityContainerIdentifier:nil];
if (url) {
NSLog(@"iCloud access at %@", url);
} else {
NSLog(@"No iCloud access");
}
return url;
}
-(NSURL *)storeURL{
return [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"Planner.sqlite"];
}
-(NSDictionary *)storeOptions{
NSMutableDictionary *options = [[NSMutableDictionary alloc] init];
[options setObject:[NSNumber numberWithBool:YES] forKey:NSMigratePersistentStoresAutomaticallyOption];
[options setObject:[NSNumber numberWithBool:YES] forKey:NSInferMappingModelAutomaticallyOption];
return options;
}
-(NSDictionary *)iCloudStoreOptions{
NSMutableDictionary *options = [[NSMutableDictionary alloc] init];
[options setObject:[NSNumber numberWithBool:YES] forKey:NSMigratePersistentStoresAutomaticallyOption];
[options setObject:[NSNumber numberWithBool:YES] forKey:NSInferMappingModelAutomaticallyOption];
[options setObject:@"PlannerStore" forKey:NSPersistentStoreUbiquitousContentNameKey];
return options;
}
Problem
When I run this code exactly as it is, I do not present myself in the console with help Local Storage : 1and 0in general, although there is data.
persistentStoreCoordinator, persistentStore, [self iCloudStoreOptions] , Using Local Storage 1 0, .
, , persistentStore reloadStore, .
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Apple: https://developer.apple.com/LIBRARY/ios/documentation/DataManagement/Conceptual/UsingCoreDataWithiCloudPG/UsingSQLiteStoragewithiCloud/UsingSQLiteStoragewithiCloud.html#//apple_ref/doc/uid/TP40013491-CH3-SW2 , migrateLocaltoiCloud persistentStore .., , . persistentStoreCoordinator, - DidChangeNotification?
,