title: How to animate opacity in Xamarin.Forms
body: <p>I wonder how to Animate opacity of elements visible on screen. For example for Entry I got to this:</p>
  
  <pre><code>this.Animate("", d =&gt;
  {
     Debug.WriteLine("anim:" + d);
     Username.Opacity = (AnimationTime - d) / AnimationTime;
  }, 0, AnimationTime);
  </code></pre>
  
  <p>but I wonder if there is easier way. Unfortunately Animate method is poorly documented.</p>