Creating a UIBarButtonItem programmatically

This counts as one of those things that I'll want to do again in the future but will have to re-research it by poring through old code or Googling (yet again). Sometimes for brevity, it isn't ideal to have a View Controller *and* a XIB for every little thing you want to present. The XIB is an extra file and the symbolic links to the controller can be a pain to maintain. To create your own action button (say, in the upper-right corner), use the following code:

- (void)viewDidLoad {
 UINavigationBar *navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
 UINavigationItem *navItem = [[UINavigationItem alloc] initWithTitle:@"Load Colors"];
 [navBar pushNavigationItem:navItem animated:NO];
 UIBarButtonItem *editButton = [[UIBarButtonItem alloc] initWithTitle:@"Edit"
  style:UIBarButtonItemStyleBordered
   target:self
   action:@selector(toggleEdit:)];
 navItem.rightBarButtonItem = editButton;
 
 [self.view addSubview:navBar];

 [editButton release];
 [navItem release];
 [navBar release]; 
 [super viewDidLoad];
}