main930.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    home: new Home(),
  ));
}

class Home extends StatefulWidget {
  @override
  HomeState createState() => HomeState();
}

class HomeState extends State<Home> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text('Day 9 Mobile Task'),
          centerTitle: true,
        ),
        body: Center(
          child: Text(
            '$_counter',
            style: new TextStyle(fontSize: 40),
          ),
        ),
        floatingActionButton:
            Row(mainAxisAlignment: MainAxisAlignment.end, children: <Widget>[
          FloatingActionButton(
            onPressed: _incrementCounter,
            tooltip: 'Increment',
            child: Icon(Icons.add),
          ),
          SizedBox(width: 20),
          FloatingActionButton(
            onPressed: () {
              setState(() {
                _counter--;
              });
            },
            tooltip: 'Decrement',
            child: Icon(Icons.remove),
          ),
        ]));
  }
}