Snippet Code: NSNotification Register and Post

// Register

[[NSNotificationCenter defaultCenter] addObserver:self

                                             selector:@selector(paintColorSelected:)

                                                 name:@"PaintColorSelected"

                                               object:nil];

// Post notification (normally in another ViewController

[[NSNotificationCenter defaultCenter] postNotificationName:@"PaintColorSelected" object:paintSelected.paintName];