Small Floting Action Button Using Flutter Android App

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    debugShowCheckedModeBanner: false,
    home: MyApp(),
  ));
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.green,
        title: new Text("Small Floting Action Button"),
      ),
      floatingActionButton: Row(
        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        children: [
          FloatingActionButton(
            backgroundColor: Colors.green,
            onPressed: (){},
            child: Icon(Icons.sentiment_very_satisfied),
          ),
          FloatingActionButton(
            backgroundColor: Colors.green,
            onPressed: (){},
            child: Icon(Icons.sentiment_very_satisfied),
            mini: true,
          ),
        ],
      ),
    );
  }
}