fluttertoast — Setup and Guide

About Fluttertoast: Toast Library for Flutter, Easily create toast messages in a single line of code.
Android and iOS Toast Library for Flutter
Supported Platforms
Android
IOS

If you don’t want to use androidx then use fluttertoast version 2.2.11

https://medium.com/ionicfirebaseapp/fluttertoast-setup-and-guide-b463ff84915e