Getx reactive state management counter app

main.dart

import 'package:flutter/material.dart';
import 'package:get/get.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  var count = 0.obs;
  void increment(){
    count++;
  }
  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      home: Scaffold(
        body: Column(
          children: <Widget>[
            Obx(()=>
                Text('value $count',style: TextStyle(
                  fontSize: 18,
                  color: Colors.black,
                ),),

            ),
            ElevatedButton(onPressed: (){
              increment();
            }, child: Text(
              'click',
              style: TextStyle(
                color: Colors.black,
                fontSize: 18.0,
              ),
            ),),

          ],
        ),
      ),
    );
  }
}