30 Flutter: Footer Buttons

import 'package:flutter/material.dart';
import 'dart:async';
void main(){
runApp(new MaterialApp(
home: new MyApp(),
class MyApp extends StatefulWidget {
_State createState() => new _State();
//State is information of the application that can change over time or when some actions are taken.
class _State extends State<MyApp>{
String _value = '';
void _onClick(String value) => setState(() => _value = value);
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text('Name here'),
backgroundColor: Colors.red,
persistentFooterButtons: <Widget>[
new IconButton(icon: new Icon(Icons.timer), onPressed: () => _onClick('Button1')),
new IconButton(icon: new Icon(Icons.people), onPressed: () => _onClick('Button2')),
new IconButton(icon: new Icon(Icons.map), onPressed: () => _onClick('Button3')),
//hit Ctrl+space in intellij to know what are the options you can use in flutter widgets
body: new Container(
padding: new EdgeInsets.all(32.0),
child: new Center(
child: new Column(
children: <Widget>[
new Text(_value)