title: Android like Textfield Validation in Flutter?
body: <p>I would like to achieve Android like <code>TextField</code> validation in <code>Flutter</code>.</p>
  
  <p>I tried the <code>TextField</code> docs of <code>Flutter</code> and the <code>InputDecoration</code> has a property of <code>errorText</code> but is displays error at the bottom of <code>textfield</code>. I want to achieve something like below in Flutter</p>
  
  <p><a href="https://i.stack.imgur.com/WLPlp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WLPlp.png" alt="enter image description here"></a></p>