Scoped Model flutter

 import 'package:flutter/material.dart';

import 'package:practiceapp/CounterModel.dart';
import 'package:scoped_model/scoped_model.dart';
import 'animationtut.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  final ScopedCounterClass scopedCounterClass = ScopedCounterClass();
  @override
  Widget build(BuildContext context) {
    return ScopedModel(
      model: scopedCounterClass,
      child: Scaffold(
        appBar: AppBar(
          title: Text('Scoped Example'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Text('You Have Pushed the button this many times'),
              ScopedModelDescendant<ScopedCounterClass>(
                builder: (context, child, model) => Text(
                  model.counterClass.counter.toString(),
                  style: TextStyle(
                    fontWeight: FontWeight.bold,
                    fontSize: 30,
                  ),
                ),
              )
            ],
          ),
        ),
        floatingActionButton: FloatingActionButton(
          child: Icon(Icons.add),
          onPressed: () {
            scopedCounterClass.increment();
          },
        ),
      ),
    );
  }
}

import 'package:scoped_model/scoped_model.dart';
import 'CounterClass/CounterClass.dart';

class ScopedCounterClass extends Model {
  CounterClass counterClass = CounterClass();
  void increment() {
    counterClass.counter++;
    notifyListeners();
  }
}