I took a cue from Apple's own multiple samples. I thought about that and I changed my code to force create the managed object context and the persistent store right when the application has started.
Thanks, Mike. Seems we got to the same cause.Í -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://www.nemesys-soft.com/ Logiciels Nemesys Software laur...@nemesys-soft.com On Feb 17, 2013, at 05:45, Mike Abdullah <cocoa...@mikeabdullah.net> wrote: > Thinking about it more, your method doesn't really make sense. In order to > use a context it must be associated with a persistent store coordinator, in > order to know its model. So it doesn't make sense to create the coordinator > lazily. Instead, make *adding the store* be the lazy bit > > Sent from my iPad > > On 16 Feb 2013, at 19:06, Laurent Daudelin <laur...@nemesys-soft.com> wrote: > >> Hey Mike. >> >> No assertions have ever been fired, which I thought was weird a bit as well. >> BTW, this is on iOS, not Mac OS X if that makes any difference. >> >> -Laurent. >> -- >> Laurent Daudelin >> AIM/iChat/Skype:LaurentDaudelin >> http://www.nemesys-soft.com/ >> Logiciels Nemesys Software >> laur...@nemesys-soft.com >> >> On Feb 16, 2013, at 02:00, Mike Abdullah <cocoa...@mikeabdullah.net> wrote: >> >>> >>> On 16 Feb 2013, at 00:37, Laurent Daudelin <laur...@nemesys-soft.com> wrote: >>> >>>> I got a few crash reports from users that have a problem with my CoreData >>>> app. >>>> >>>> Given the following code: >>>> >>>> /* >>>> 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) { >>>> NSURL *storeUrl = [NSURL fileURLWithPath:self.persistentStorePath]; >>>> _persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] >>>> initWithManagedObjectModel:[NSManagedObjectModel >>>> mergedModelFromBundles:nil]]; >>>> NSError *error = nil; >>>> NSPersistentStore *persistentStore = [_persistentStoreCoordinator >>>> addPersistentStoreWithType:NSSQLiteStoreType configuration:nil >>>> URL:storeUrl options:nil error:&error]; >>>> NSAssert3(persistentStore != nil, @"%s at %d: Unhandled error adding >>>> persistent store: %@", __FUNCTION__, __LINE__, [error >>>> localizedDescription]); >>>> NSLog(@"Created persistent store '%@' at URL %@", >>>> persistentStore, storeUrl); >>>> } >>>> return _persistentStoreCoordinator; >>>> } >>>> >>>> When the MOC tries to perform a save, an exception is generated: >>>> >>>> Exception reason >>>> >>>> This NSPersistentStoreCoordinator has no persistent stores. It cannot >>>> perform a save operation. >>>> >>>> Stacktrace >>>> >>>> PRIMARY THREAD THREAD 0 >>>> >>>> • 0 CoreFoundation 0x356212a3 __exceptionPreprocess + 163 >>>> • 1 libobjc.A.dylib 0x3393197f objc_exception_throw + 31 >>>> • 2 CoreData 0x36f2dfef -[NSPersistentStoreCoordinator >>>> executeRequest:withContext:error:] + 299 >>>> • 3 CoreData 0x36f862d3 -[NSManagedObjectContext save:] + 731 >>>> >>>> How can the persistent store not being existing? >>> >>> Well you whacked in some assertions that failures never happen (generally a >>> bad idea for disk access. It *is* going to fail sometime). Have those >>> assertions fired? >>> >> _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
