title: custom renderer to show title for each content page in a Xamarin tabbed page
body: <p>I have a tabbed page which sits at the bottom of the screen and so has it's own custom renderer to achieve this.</p>
  
  <p>I want to amend the renderer so that on UpdateSelectedTabIndex(Page page) the content pages get their own title, as this is overridden by the tabbed page it seems and no title is visible.</p>
  
  <p>I was thinking along the lines of the code below but it doesn't work, can anyone point me in the right direction?</p>
  
  <pre><code>void UpdateSelectedTabIndex(Page page)
  {
      var index = Element.Children.IndexOf(page);
      _bottomBar.SelectTabAtPosition(index, true);
      if(index == 0)
      {
          page.Title = "HOME";
      }
  }
  </code></pre>