How to create a stop watch in flutter - flutter

Question

I want to make a minute/second stopwatch that isn't very complex interms of code. I tried using the Stopwatch class that returns it's current value when it's function is called, is there any way i can use the stopwatch class that will automatically update my text widget every second. I am using getx as a state manager.
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
const title = 'Grid List';
return MaterialApp(
title: title,
home: Scaffold(
appBar: AppBar(
title: const Text(title),
),
body: MyTimer(),
),
);
}
}
class MyTimer extends StatefulWidget {
const MyTimer({Key? key}) : super(key: key);
#override
_MyTimerState createState() => _MyTimerState();
}
class _MyTimerState extends State<MyTimer> {
final stopWatchClass = Stopwatch();
#override
void initState() {
stopWatchClass.start();
super.initState();
}
#override
Widget build(BuildContext context) {
return Text(stopWatchClass.elapsedMilliseconds.toString());
}
}
0 is written on the Text widget, but if u start the stopwatch a bit earlier, it shows the correct time elapsed. The problem is that i want the text widget to automatically update everytime a second has elapsed, somewhat like listening to the stopWatchClass.