title: Align View to bottom and top in RelativeLayout XamarinForms
body: <p>I want to align one image to the top and one image to the bottom of a <code>RelativeLayout</code> in Xamarin.Forms.
  How can I do this?</p>
  
  <pre><code>&lt;RelativeLayout&gt;
              &lt;Image 
                  Aspect="Fill"
                  Source = "header_login.png"&gt;&lt;/Image&gt;
              &lt;Image 
                  Aspect="Fill"
                  Source = "login_footer_2.png"
                  RelativeLayout.XConstraint=
                   "{ConstraintExpression Type=RelativeToParent,
                                          Property=Width,
                                          Factor=0}"
                  RelativeLayout.YConstraint=
                   "{ConstraintExpression Type=RelativeToParent,
                                          Property=Height,
                                          Factor=1}" &gt;&lt;/Image&gt;
  &lt;/RelativeLayout&gt;
  </code></pre>