title: UIBarButtonItem in navigationBar set Vertical Position Offset
body: <p>I'm trying to move my UIBarButtonItem in the UINavigationBar "down". For that I'm using the following code:</p>
  
  <pre><code>[[self.navigationItem.rightBarButtonItems objectAtIndex:0] setTitlePositionAdjustment:UIOffsetMake(0.0f, 10.0f) forBarMetrics:UIBarMetricsDefault];
  </code></pre>
  
  <p>If I change 0.0f in the horizontal position to an arbitrary value, the text moves horizontal. But I can't change the vertical position. No matter what I enter for 10.0f, I see no effect.</p>
  
  <p>Edit: I've added a UIView to my UINavigationar.
  <code>[self.navigationController.navigationBar addSubview:statusbarview];</code></p>