Question

In one of my classes I post a notification:

[[NSNotificationCenter defaultCenter] postNotificationName:@"ALERTNOTI" object:self userInfo:nil];

In my app delegaate I listen:

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(myMethod) name:@"ALERTNOTI" object:nil];

I use NSLog to track when I send and when the method myMethod gets called.

The method is not getting called despite me sending out the notification.

Is there something that I need to know about NSNotification? Is it tempermental?

Answer 1

 do this changes

   [[NSNotificationCenter defaultCenter] postNotificationName:@"ALERTNOTI" object:nil];

   if you want to pass some object through the notification. then do this
    ex: you want to pass an NSDictionary *dict

   [[NSNotificationCenter defaultCenter] postNotificationName:@"ALERTNOTI" object:nil userInfo:dict];

the method you want to call via notification should be like this.

  -(void)method:(NSNotification *) notif
   {
      // your code here.

      //if you want to access your dict
       NSDictionary *myDict=[notif userInfo];



   }