it possible to Pass Data with popViewControllerAnimated?

Question

I came across an interesting problem, i have main ViewController let\'s call him MainVC with navigationController and i am doing performSegueWithIdentifier from him to Mine

Answer 1

While I agree that the best option is to use Delegate, but still if any one is looking for something different, he can use NSNotificationCenter as an alternative.

In viewDidLoad of MainVC:

- (void)viewDidLoad
{

    [super viewDidLoad];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(recvData:)
                                             name:@"SecVCPopped"
                                           object:nil];
}

And add method recvData in MainVC.m

- (void) recvData:(NSNotification *) notification
{

    NSDictionary* userInfo = notification.userInfo;
    int messageTotal = [[userInfo objectForKey:@"total"] intValue];
    NSLog (@"Successfully received data from notification! %i", messageTotal);
}

Now in SecVC, before popping, add this line

NSMutableDictionary* userInfo = [NSMutableDictionary dictionary];
[userInfo setObject:[NSNumber numberWithInt:messageTotal] forKey:@"total"];

NSNotificationCenter* nc = [NSNotificationCenter defaultCenter];
[nc postNotificationName:@"SecVCPopped" object:self userInfo:userInfo];