Adding observer after poster NSNotificationCenter workaround?

Question

Is it possible to assign a delegate or NSNotificationCenter observer to VC2 that is loaded after VC1, where post takes place?

I have a tabbar app with multiple VCs. VC 1 is loaded first and the action to trigger a post takes place before VC2 is loaded. In VC2, I need to copy or get reference of an array from VC1.

Is there any other way to do this? Please help! I've been at this for 4 hours now. Thanks

Answer 1

try this it may help you.

FirstViewController

-(void)viewDidAppear:(BOOL)animated
{
    NSArray *temp=[NSArray arrayWithObjects:@"1",@"2", nil];

    [[NSNotificationCenter defaultCenter] postNotificationName:@"postArrayObject" object:temp];

}

SecondViewController

-(void)viewWillAppear:(BOOL)animated
{

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(objFirstViewController:) name:nil object:nil];

}
-(void)objFirstViewController:(NSNotification *)notification
{
    if ([[notification name]isEqualToString:@"postArrayObject"])
    {
        NSArray *cellData = [notification object];
        if (cellData)
        {
            UIAlertView *message = [[UIAlertView alloc] initWithTitle:@"WORKING"
                                                              message:nil
                                                             delegate:nil
                                                    cancelButtonTitle:@"OK"
                                                    otherButtonTitles:nil];

            [message show];
        }

    }

}