 <p>I'm not sure I understand your question, but you may want to look into the NSNotificationCenter. You can use it to send messages to your controllers, here's an example of triggering a notification:</p> <pre><code>[[NSNotificationCenter defaultCenter] postNotificationName:@"myNotificationName" object:self userInfo:[NSDictionary dictionaryWithObject:XXXX forKey:@"someObject"]]; </code></pre> <p>As you can see, you can even send parameters to it. And in the target controller you just register an observer to respond to those messages:</p> <pre><code>[[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(yourMethodHere:) name: @"myNotificationName" object: nil]; </code></pre> <p>Regards!</p>