title: How to read and write a text file in Flutter
body: <p>How do you read text from a file and write text to a file?</p>
  
  <p>I've been learning about how to read and write text to and from a file. I found another question about <a href="https://stackoverflow.com/questions/44816042/flutter-read-text-file-from-assets">reading from assets</a>, but that is not the same. I will add my answer below from what I learned from the documentation.</p>