+entityForName: nil is not a legal NSManagedObjectContext parameter searching for entity name ‘Account”

– (NSManagedObjectContext *)managedObjectContext { if (managedObjectContext != nil) return managedObjectContext; NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator]; if (coordinator != nil) { managedObjectContext = [[NSManagedObjectContext alloc] init]; [managedObjectContext setPersistentStoreCoordinator:coordinator]; } return managedObjectContext; } You haven’t provided a lazy loading implementation of persistentStoreCoordinator so coordinator will always be nil so you will always be returning nil from this … Read more

Xcode 5 Error CertUIFramework.axbundle

Temporary workaround: click iOS Simulator > Reset Content and Settings… and run again. This error message may reappear at random. For me, it happens when I launch a different application. There are several threads in Apple dev forums and in StackOverflow about this problem, but none have a definitive answer. This seems to be a … Read more

iOS7 UISwitch its Event ValueChanged: Calling continuously is this Bug or what..?

Please see the following code: -(void)viewDidLoad { [super viewDidLoad]; UISwitch *mySwitch = [[UISwitch alloc] initWithFrame:CGRectMake(130, 235, 0, 0)]; [mySwitch addTarget:self action:@selector(changeSwitch:) forControlEvents:UIControlEventValueChanged]; [self.view addSubview:mySwitch]; } – (void)changeSwitch:(id)sender{ if([sender isOn]){ NSLog(@”Switch is ON”); } else{ NSLog(@”Switch is OFF”); } }