title: How to set Title in center of navigation bar Xamarin.forms
body: <p>How to set Title into center of Navigation Bar.
  Can we set without custom render.
  I have used  </p>
  
  <pre><code>&lt;TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Toolbar Title" android:layout_gravity="center" android:id="@+id/toolbar_title" /&gt; 
  </code></pre>
  
  <p>But Its not working </p>