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POCore Data NSFetchRequest problem
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copied!<p>I am trying to develop a test Core Data app so i can use it in my main app. But im having problems fetching stored data.</p> <p>I have 1 Entity "User" with 2 attributes: name (String) & email (String) I can successfully populate my store file with data... here is the code im using below. Any help would be greatly appreciated.</p> <pre><code>NSManagedObjectContext *managedObjectContext; NSError *error; NSString *basePath = @"/Users/Jamie/Desktop"; NSURL *storePath = [NSURL fileURLWithPath: [basePath stringByAppendingPathComponent:@"datastore.xml"]]; NSLog(@"Data Store path: %@", storePath); NSPersistentStoreCoordinator *persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[NSManagedObjectModel mergedModelFromBundles:nil]]; if(![persistentStoreCoordinator addPersistentStoreWithType:NSXMLStoreType configuration:nil URL:storePath options:nil error:&error]) { NSLog(@"Unable to load Core Data Store"); NSLog(@"ERROR: %@", error); return 1; } else { NSLog(@"Loaded Core Data Store"); } managedObjectContext = [[NSManagedObjectContext alloc] init]; [managedObjectContext setPersistentStoreCoordinator:persistentStoreCoordinator]; // Add data to store. /* NSManagedObject *mo = [NSEntityDescription insertNewObjectForEntityForName:@"User" inManagedObjectContext:managedObjectContext]; [mo setValue:@"jamie" forKey:@"name"]; [mo setValue:@"jamie@domain.com" forKey:@"email"]; if([managedObjectContext save:&error]) { NSLog(@"Saved data to store"); } else { NSLog(@"Unable to save data to store"); NSLog(@"ERROR: %@", error); } */ // Fetch all the data - not worrying about using a predicate. NSEntityDescription *entityDescription = [NSEntityDescription entityForName:@"User" inManagedObjectContext:managedObjectContext]; NSFetchRequest *request = [[NSFetchRequest alloc] init]; [request setEntity:entityDescription]; NSArray *results = [managedObjectContext executeFetchRequest:request error:&error]; </code></pre>

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