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2014/10/15 ¤U¤È 10:12:33
iphone Programming Glossary: persistentDelete/Reset all entries in Core Data? http://stackoverflow.com/questions/1077810/delete-reset-all-entries-in-core-data error NSFileManager defaultManager removeItemAtPath storeURL.path error error Then just add the persistent store back to ensure it is recreated properly. The programmatic way for iterating through each entity..
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project managedObjectModel NSManagedObjectContext managedObjectContext NSPersistentStoreCoordinator persistentStoreCoordinator ... @property nonatomic retain readonly NSManagedObjectModel managedObjectModel @property.. managedObjectContext @property nonatomic retain readonly NSPersistentStoreCoordinator persistentStoreCoordinator What am I missing Starting a new project is not an option... Thanks a lot edit sorry.. 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..
How to share custom data between iPhone applications? http://stackoverflow.com/questions/220630/how-to-share-custom-data-between-iphone-applications There are two different ways you might go about this. 1 The data you need to share is non persistent. In other words you need to launch one application with a piece of data that it can do something with... URL schemes via Craig Hockenberry in his redacted blog post . 2 The data you need to share is persistent. In other words you need something like a data file that both applications can read and write too. As..
Adding C++ Object to Objective-C Class http://stackoverflow.com/questions/2262011/adding-c-object-to-objective-c-class have a single interface class between the Objective C and C code. Therefore I would like to have a persistent C object in the ViewController interface. This fails by forbidding the declaration of 'myCppFile' with..
Implementation of “Automatic Lightweight Migration” for Core Data (iPhone) http://stackoverflow.com/questions/2310216/implementation-of-automatic-lightweight-migration-for-core-data-iphone the NSInferMappingModelAutomaticallyOption keys to YES NSError error NSURL storeURL #The URL of a persistent store# NSPersistentStoreCoordinator psc #The coordinator# NSDictionary options NSDictionary dictionaryWithObjectsAndKeys.. the error. My NSPersistentStoreCoordinator is initialized in this way NSPersistentStoreCoordinator persistentStoreCoordinator if persistentStoreCoordinator nil return persistentStoreCoordinator NSURL storeUrl NSURL.. is initialized in this way NSPersistentStoreCoordinator persistentStoreCoordinator if persistentStoreCoordinator nil return persistentStoreCoordinator NSURL storeUrl NSURL fileURLWithPath self applicationDocumentsDirectory..
JSON and Core Data on the iPhone http://stackoverflow.com/questions/2362323/json-and-core-data-on-the-iphone objectArray autorelease Now this is recursive so you can easily end up translating your entire persistent store if you are not careful. Watch your relationships and make sure that they only go down the object..
How do I reset the scale/zoom of a web app on an orientation change on the iPhone? http://stackoverflow.com/questions/2557801/how-do-i-reset-the-scale-zoom-of-a-web-app-on-an-orientation-change-on-the-iphon width. Any ideas I know a lot of people would be grateful to have a solution as it seems to be a persistent problem. Thank you javascript iphone ipad orientation share improve this question Jeremy Keith..
Delete/Reset all entries in Core Data? http://stackoverflow.com/questions/1077810/delete-reset-all-entries-in-core-data ... storeCoordinator removePersistentStore store error error NSFileManager defaultManager removeItemAtPath storeURL.path error error Then just add the persistent store back to ensure it is recreated properly. The programmatic way for iterating through each entity is both slower and prone to error. The use for doing it that..
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project CoreData.framework . My header file NSManagedObjectModel managedObjectModel NSManagedObjectContext managedObjectContext NSPersistentStoreCoordinator persistentStoreCoordinator ... @property nonatomic retain readonly NSManagedObjectModel managedObjectModel @property nonatomic retain readonly NSManagedObjectContext managedObjectContext.. @property nonatomic retain readonly NSManagedObjectContext managedObjectContext @property nonatomic retain readonly NSPersistentStoreCoordinator persistentStoreCoordinator What am I missing Starting a new project is not an option... Thanks a lot edit sorry I do have those implementations... but it seems like the Library.. mark #pragma mark Core Data stack 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..
How to share custom data between iPhone applications? http://stackoverflow.com/questions/220630/how-to-share-custom-data-between-iphone-applications them Thanks iphone cocoa touch share improve this question There are two different ways you might go about this. 1 The data you need to share is non persistent. In other words you need to launch one application with a piece of data that it can do something with. In this case you would register a special URL scheme per.. scheme per application. You can find out more information about URL schemes via Craig Hockenberry in his redacted blog post . 2 The data you need to share is persistent. In other words you need something like a data file that both applications can read and write too. As far as I know there isn't a safe way to do this other than..
Adding C++ Object to Objective-C Class http://stackoverflow.com/questions/2262011/adding-c-object-to-objective-c-class Objective C I've made it most of the way but would like to have a single interface class between the Objective C and C code. Therefore I would like to have a persistent C object in the ViewController interface. This fails by forbidding the declaration of 'myCppFile' with no type #import UIKit UIKit.h #import GLView.h #import myCppFile.h..
Implementation of “Automatic Lightweight Migration” for Core Data (iPhone) http://stackoverflow.com/questions/2310216/implementation-of-automatic-lightweight-migration-for-core-data-iphone to both the NSMigratePersistentStoresAutomaticallyOption and the NSInferMappingModelAutomaticallyOption keys to YES NSError error NSURL storeURL #The URL of a persistent store# NSPersistentStoreCoordinator psc #The coordinator# NSDictionary options NSDictionary dictionaryWithObjectsAndKeys NSNumber numberWithBool YES NSMigratePersistentStoresAutomaticallyOption.. or nil# URL storeURL options options error error Handle the error. My NSPersistentStoreCoordinator is initialized in this way NSPersistentStoreCoordinator persistentStoreCoordinator if persistentStoreCoordinator nil return persistentStoreCoordinator NSURL storeUrl NSURL fileURLWithPath self applicationDocumentsDirectory stringByAppendingPathComponent.. options error error Handle the error. My NSPersistentStoreCoordinator is initialized in this way NSPersistentStoreCoordinator persistentStoreCoordinator if persistentStoreCoordinator nil return persistentStoreCoordinator NSURL storeUrl NSURL fileURLWithPath self applicationDocumentsDirectory stringByAppendingPathComponent @ FC.sqlite..
JSON and Core Data on the iPhone http://stackoverflow.com/questions/2362323/json-and-core-data-on-the-iphone structureDictionary withManagedObjectContext moc return objectArray autorelease Now this is recursive so you can easily end up translating your entire persistent store if you are not careful. Watch your relationships and make sure that they only go down the object tree so that you only get the objects you want translated...
How do I reset the scale/zoom of a web app on an orientation change on the iPhone? http://stackoverflow.com/questions/2557801/how-do-i-reset-the-scale-zoom-of-a-web-app-on-an-orientation-change-on-the-iphon scale nor do I want to . I am setting the width to device width. Any ideas I know a lot of people would be grateful to have a solution as it seems to be a persistent problem. Thank you javascript iphone ipad orientation share improve this question Jeremy Keith @adactio has a good solution for this on his blog Orientation..
Delete/Reset all entries in Core Data? http://stackoverflow.com/questions/1077810/delete-reset-all-entries-in-core-data store error error NSFileManager defaultManager removeItemAtPath storeURL.path error error Then just add the persistent store back to ensure it is recreated properly. The programmatic way for iterating through each entity is both slower and..
How to use the first character as a section name http://stackoverflow.com/questions/1741093/how-to-use-the-first-character-as-a-section-name the same relative orderings. For example the first sort descriptor in fetchRequest might specify the key for a persistent property sectionNameKeyPath might specify a key for a transient property derived from the persistent property. Boilerplate.. the key for a persistent property sectionNameKeyPath might specify a key for a transient property derived from the persistent property. Boilerplate UITableViewDataSource implementations using NSFetchedResultsController NSInteger numberOfSectionsInTableView..
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project file NSManagedObjectModel managedObjectModel NSManagedObjectContext managedObjectContext NSPersistentStoreCoordinator persistentStoreCoordinator ... @property nonatomic retain readonly NSManagedObjectModel managedObjectModel @property nonatomic retain.. readonly NSManagedObjectContext managedObjectContext @property nonatomic retain readonly NSPersistentStoreCoordinator persistentStoreCoordinator What am I missing Starting a new project is not an option... Thanks a lot edit sorry I do have those implementations..... 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..
How to share custom data between iPhone applications? http://stackoverflow.com/questions/220630/how-to-share-custom-data-between-iphone-applications improve this question There are two different ways you might go about this. 1 The data you need to share is non persistent. In other words you need to launch one application with a piece of data that it can do something with. In this case you.. more information about URL schemes via Craig Hockenberry in his redacted blog post . 2 The data you need to share is persistent. In other words you need something like a data file that both applications can read and write too. As far as I know there..
Adding C++ Object to Objective-C Class http://stackoverflow.com/questions/2262011/adding-c-object-to-objective-c-class but would like to have a single interface class between the Objective C and C code. Therefore I would like to have a persistent C object in the ViewController interface. This fails by forbidding the declaration of 'myCppFile' with no type #import UIKit..
Implementation of “Automatic Lightweight Migration” for Core Data (iPhone) http://stackoverflow.com/questions/2310216/implementation-of-automatic-lightweight-migration-for-core-data-iphone and the NSInferMappingModelAutomaticallyOption keys to YES NSError error NSURL storeURL #The URL of a persistent store# NSPersistentStoreCoordinator psc #The coordinator# NSDictionary options NSDictionary dictionaryWithObjectsAndKeys.. error error Handle the error. My NSPersistentStoreCoordinator is initialized in this way NSPersistentStoreCoordinator persistentStoreCoordinator if persistentStoreCoordinator nil return persistentStoreCoordinator NSURL storeUrl NSURL fileURLWithPath.. My NSPersistentStoreCoordinator is initialized in this way NSPersistentStoreCoordinator persistentStoreCoordinator if persistentStoreCoordinator nil return persistentStoreCoordinator NSURL storeUrl NSURL fileURLWithPath self applicationDocumentsDirectory..
JSON and Core Data on the iPhone http://stackoverflow.com/questions/2362323/json-and-core-data-on-the-iphone moc return objectArray autorelease Now this is recursive so you can easily end up translating your entire persistent store if you are not careful. Watch your relationships and make sure that they only go down the object tree so that you..
How do I reset the scale/zoom of a web app on an orientation change on the iPhone? http://stackoverflow.com/questions/2557801/how-do-i-reset-the-scale-zoom-of-a-web-app-on-an-orientation-change-on-the-iphon the width to device width. Any ideas I know a lot of people would be grateful to have a solution as it seems to be a persistent problem. Thank you javascript iphone ipad orientation share improve this question Jeremy Keith @adactio has a good..
Creating a JSON Store For iPhone http://stackoverflow.com/questions/5237943/creating-a-json-store-for-iphone document store on the iPhone that supports querying Or can I use some JSON parser to convert the data to some kind of persistent NSDictionary and query that using predicates Or perhaps use SQLite as a BLOB store with manually created indexes on the.. if they all share a single context at runtime. This can let you put temporary info into one store use it like more persistent data and then delete the store when you are done with it. Core Data gives you more options than might be apparent at first..
http://stackoverflow.com/questions/545091/clearing-nsuserdefaults value iphone objective c cocoa touch nsuserdefaults share improve this question You can remove the application's persistent domain like this NSString appDomain NSBundle mainBundle bundleIdentifier NSUserDefaults standardUserDefaults removePersistentDomainForName..
Coredata Error “data: <fault>” http://stackoverflow.com/questions/7304257/coredata-error-data-fault improve this question This is expected behaviour core data won't return full objects until you need to access the persistent values of the objects. Each of your returned objects will be a 'fault' until this point. You can force the fetch request..
Core Data vs. SQLite for SQL experienced developers http://stackoverflow.com/questions/840634/core-data-vs-sqlite-for-sql-experienced-developers it and there are no major roadblocks. To answer your specific questions You can assign a version number to the entire persistent store and retrieve that information via NSPersistentStore metadataForPersistentStoreWithURL error without even opening the.. error also exists of course. If you want to store the version info in an entity instance instead of in the persistent store metadata you can load only a single object. With an SQLite persistent store Core Data does a very good job of fetching.. in an entity instance instead of in the persistent store metadata you can load only a single object. With an SQLite persistent store Core Data does a very good job of fetching only what you need. The NSPredicate API is very easy to learn and it seems..
Persistent UIBarButtonItem in UIToolbar? http://stackoverflow.com/questions/1072080/persistent-uibarbuttonitem-in-uitoolbar UIBarButtonItem in UIToolbar I've been developing an iPhone app that uses a UIToolbar in the context of a UINavigationController..
Core Data data model: attribute type for UIColor http://stackoverflow.com/questions/2304882/core-data-data-model-attribute-type-for-uicolor share improve this question What you probably want is a transformable attribute. Give the section on Non standard Persistent Attributes in the Core Data Programming Guide an other read. A transformable attribute is underneath the covers a binary..
Implementation of “Automatic Lightweight Migration” for Core Data (iPhone) http://stackoverflow.com/questions/2310216/implementation-of-automatic-lightweight-migration-for-core-data-iphone To request automatic lightweight migration you set appropriate flags in the options dictionary you pass in addPersistentStoreWithType configuration URL options error . You need to set values corresponding to both the NSMigratePersistentStoresAutomaticallyOption.. addPersistentStoreWithType configuration URL options error . You need to set values corresponding to both the NSMigratePersistentStoresAutomaticallyOption and the NSInferMappingModelAutomaticallyOption keys to YES NSError error NSURL storeURL #The URL.. the NSInferMappingModelAutomaticallyOption keys to YES NSError error NSURL storeURL #The URL of a persistent store# NSPersistentStoreCoordinator psc #The coordinator# NSDictionary options NSDictionary dictionaryWithObjectsAndKeys NSNumber numberWithBool..
JSON to Persistent Data Store (CoreData, etc.) http://stackoverflow.com/questions/2563984/json-to-persistent-data-store-coredata-etc to Persistent Data Store CoreData etc. All of the data on my application is pulled through an API via JSON. The nature of a good percentage..
Detecting a Lightweight Core Data Migration http://stackoverflow.com/questions/3025742/detecting-a-lightweight-core-data-migration possibly using KVO or notifications or does this require implementing standard migrations I've tried using the NSPersistentStoreCoordinatorStoresDidChangeNotification but it doesn't fire when migrations occur. iphone iphone sdk 3.0 core data core.. the existing store's metadata adapted from Apple's Is Migration Necessary NSError error nil persistentStoreCoordinator Persistent store coordinator NSURL storeUrl URL for the source store Determine if a migration is needed NSDictionary sourceMetadata.. coordinator NSURL storeUrl URL for the source store Determine if a migration is needed NSDictionary sourceMetadata NSPersistentStoreCoordinator metadataForPersistentStoreOfType NSSQLiteStoreType URL storeUrl error error NSManagedObjectModel..
Provide Base Data for Core Data Application? http://stackoverflow.com/questions/928177/provide-base-data-for-core-data-application would come along with it and we'd be ready to go. But with Core Data I'm not really sure if I can just save the Persistent store to the App bundle and copy it before having Core Data start doing its thing. Will this cause any problems There is..
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