// place this code in a UIViewController subclass

- (void)debugButtonPressed:(id)sender
{
 UIActionSheet* action = [[UIActionSheet alloc] 
        initWithTitle:@"Menu" 
        delegate:self 
        cancelButtonTitle:@"Continue"
        destructiveButtonTitle:@"Quit" 
        otherButtonTitles:@"Debug",nil ];
 [action showInView:self.view];
 [action release];
}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
 switch (buttonIndex) {
  case 0: // Quit
   NSLog(@"Quit");
   break;
 case 1: // Continue
   NSLog(@"Continue");
   break;
  case 2: // Debug
   NSLog(@"Debug");
   break;
 }
}

Here's a quick snippet for popping up a list of options using the UIActionSheet in iPhone OS.

What's slightly confusing is that the index of the 'cancelButton' is 1, and 'destructiveButton' is 0, even though 'cancelButton' is listed first in the initWithTitle selector. This gets me each time!

iPhone: Pop up a list of options

Objective C