title: How do you animate the height in react native when you don't know the size of the content?
body: <p><strong>In react-native, how do you animate the size of a View when you dont know the size of it's contents?</strong> </p>
  
  <p>Let's say the View's content height can be anywhere from 0-400pts, and the content can grow and shrink dynamically, and you want to animate any changes to the height. </p>
  
  <p>Basically, I'm looking to reproduce the behaviour of LayoutAnimation <em>without using LayoutAnimation</em> but using Animated.</p>
  
  <p>I think what eludes me is I don't know how to animate towards a target height since I don't know the height of the content. </p>