title: how to focus the next text field automatically after user input 1 character in flutter
body: <p>I have 4 <code>textFormField</code> widgets. Once the user has completed the first text field I would like to focus on the next <code>textField</code> automatically. Is there a way to do this in Flutter? anyone please share , thank in advance :)</p>
  <p><a href="https://i.stack.imgur.com/Y8DA7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Y8DA7.png" alt="enter image description here" /></a></p>