title: Xamarin.iOS MvvmCross, back navigation button and tabs
body: <p>I doing an application with various views types : MvxViewController, MvxTabBarViewController, ...</p>
  
  <p>But when I want to do it, I meet difficulties : Following initial directives (<a href="http://bit.ly/1hLNMF3" rel="nofollow">http://bit.ly/1hLNMF3</a>, <a href="http://bit.ly/1hNNY2g" rel="nofollow">http://bit.ly/1hNNY2g</a>), I loose navigation back button among others.</p>
  
  <p>So, I want to mix simple views and tabbed view without loosing Back button and without recode it (with NavigationItem.SetLeftBarButtonItem : <a href="http://bit.ly/1fsqGEC" rel="nofollow">http://bit.ly/1fsqGEC</a>). Inspired by these solutions, I've do this :</p>