Learn how to call code from other widgets by way of using callbacks.
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/27732941-your-first-flutter-app-polishing-the-app/lessons/17
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/27732941-your-first-flutter-app-polishing-the-app/lessons/17