Flutter Provide stage 1

main.dart

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: HomePage(),
    );
  }
}

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    int _counter = 0;
    return Scaffold(
      appBar: AppBar(
        title: Text("Provider Demo"),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.display1,
            ),
          ],
        ),
      ),
      floatingActionButton: Column(
        mainAxisAlignment: MainAxisAlignment.end,
        children: <Widget>[
          FloatingActionButton(
            onPressed: () {},
            tooltip: 'Increment',
            child: Icon(Icons.add),
          ),
          SizedBox(height: 10),
          FloatingActionButton(
            onPressed: () {},
            tooltip: 'Increment',
            child: Icon(Icons.remove),
          )
        ],
      ),
    );
  }
}

You might want to change the tooltip on the subtraction FloatingActionButton to "decrement"