동적인 UIActionSheet 와 취소버튼 붙이기

- (void)presentSheet

{

UIActionSheet *menu = [[[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil] autorelease];

for (int i = 0; i < URLStringArray.count; i++) 

 [menu addButtonWithTitle:[URLStringArray objectAtIndex:i]];

[menu addButtonWithTitle:@"취소"];

[menu setCancelButtonIndex:menu.numberOfButtons - 1];

}