title: How to show a Flutter SnackBar widget at the top?
body: <p>Is there a way to show a <a href="https://flutter.dev/docs/cookbook/design/snackbars" rel="nofollow noreferrer">Flutter Snackbar</a> at the top of the screen rather than at the bottom?</p>
  <p>According to the docs you can set <code>behaviour: SnackBarBehavior.floating</code> and that raises slightly the snackbar and makes it look a bit like a popup, but it still doesn't provide an option to explicitly set the positioning at the top, for example, right below the action bar.</p>