title: iOS 6 Create new contact via ABPeoplePickerNavigationController
body: <p>I am trying to follow Apple's Address book programming guide, and have question about peoplePickerController. The example photo from Apple tutorial has 'plus' button on the top-right which seems to be able to allow user to add new contact via peoplePickerController. </p>
  
  <p>I called ABPeopleNavigationControllerPicker via</p>
  
  <pre>
  <code>
  - (void)showPicker
  {
      ABPeoplePickerNavigationController *picker = [[ABPeoplePickerNavigationController alloc] init];
      picker.peoplePickerDelegate = self;
  
      [self presentViewController:picker animated:YES completion:nil];
  }
  </code></pre>
  
  <p>But there's a cancel button on the top-right of the screen instead of the plus button. Is there any option to change the button or allow user to add new contact via this view controller?</p>
  
  <p>After doing google search for quite a while, below is what I found. So I tried to programmatically change the bar button...</p>
  
  <p><pre><code>
  - (void)addPerson
  {
      ABNewPersonViewController *newPersonVC = [[ABNewPersonViewController alloc] init];
      newPersonVC.newPersonViewDelegate = self;
      UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:newPersonVC];
      [self presentViewController:nc animated:YES completion:nil];
  }
  - (void)showPicker
  {
      ABPeoplePickerNavigationController *picker = [[ABPeoplePickerNavigationController alloc] init];
      picker.topViewController.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addPerson)];
      picker.peoplePickerDelegate = self;
      [self presentViewController:picker animated:YES completion:nil];
  }</p>
  
  <p></pre></code></p>
  
  <p>However, somehow the bar button is still fixed as "cancel" instead of "add"...</p>