iCloudサポートをCoreDataと統合するためにこれらの手順に従っていますが、いくつかのエラーが発生します。
AppDelegateにこれがあります:
- (NSPersistentStoreCoordinator *)persistentStoreCoordinator {
if (persistentStoreCoordinator != nil) {
return persistentStoreCoordinator;
}
//NSURL *storeURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"Little_Wedding_Book_Universal.sqlite"];
NSString *storePath = [[NSString stringWithFormat:@"%@", [self applicationDocumentsDirectory]] stringByAppendingPathComponent:@"appname.sqlite"];
NSURL *storeURL = [NSURL fileURLWithPath:storePath];
persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
NSPersistentStoreCoordinator* psc = persistentStoreCoordinator;
if (IOS_VERSION_GREATER_THAN_OR_EQUAL_TO(@"5.0"))
{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSFileManager *fileManager = [NSFileManager defaultManager];
// Migrate datamodel
NSDictionary *options = nil;
// this needs to match the entitlements and provisioning profile
NSURL *cloudURL = [fileManager URLForUbiquityContainerIdentifier:@"J9VXW4WCE8.com.company.appname"];
NSString* coreDataCloudContent = [[cloudURL path] stringByAppendingPathComponent:@"data"];
if ([coreDataCloudContent length] != 0) {
// iCloud is available
cloudURL = [NSURL fileURLWithPath:coreDataCloudContent];
options = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption,
[NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption,
@"appname.store", NSPersistentStoreUbiquitousContentNameKey,
cloudURL, NSPersistentStoreUbiquitousContentURLKey,
nil];
}
else
{
// iCloud is not available
options = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption,
[NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption,
nil];
}
NSError *error = nil;
[psc lock];
if (![psc addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:options error:&error])
{
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
[psc unlock];
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"asynchronously added persistent store!");
[[NSNotificationCenter defaultCenter] postNotificationName:@"RefetchAllDatabaseData" object:self userInfo:nil];
});
});
}
else
{
NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption,
[NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption,
nil];
NSError *error = nil;
if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:options error:&error])
{
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
}
return persistentStoreCoordinator;
}
別のViewControllerで、インスタンスをAppDelegate
作成し、オブジェクトを作成して、これを呼び出します[appDelegate saveContext];
。これがアプリのクラッシュです。これは常に完璧に機能していました(これまで、iCloudサポートを追加していました)。
-(void)saveContext
{
NSError *error;
if (managedObjectContext != nil) {
if ([managedObjectContext hasChanges] && ![managedObjectContext save:&error]) {
// Update to handle the error appropriately.
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
exit(-1); // Fail
}
}
}
したがって、このメソッドでクラッシュし、コンソールから次のメッセージが表示されます。
'NSInternalInconsistencyException', reason: 'This NSPersistentStoreCoordinator has no persistent stores. It cannot perform a save operation.'
どうしたらいいかわからない、助けて!
編集:以下のコンソールログ:
アプリを起動すると、次のようになります。
2012-08-22 17:39:47.906 appname[24351:707] asynchronously added persistent store!
2012-08-22 17:39:47.955 appname[24351:707] asynchronously added persistent store!
アプリがクラッシュしたときのフォローアップ:
2012-08-22 17:41:31.657 appname[24351:707] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'This NSPersistentStoreCoordinator has no persistent stores. It cannot perform a save operation.'
*** First throw call stack:
(0x3749d88f 0x351a2259 0x36bf0fe7 0x36c59287 0xd648b 0x149e0b 0x373f73fd 0x3118ce07 0x3118cdc3 0x3118cda1 0x3118cb11 0x3118d449 0x3118b92b 0x3118b319 0x31171695 0x31170f3b 0x33bb322b 0x37471523 0x374714c5 0x37470313 0x373f34a5 0x373f336d 0x33bb2439 0x3119fcd5 0xd53dd 0xd5378)
terminate called throwing an exception(lldb)