How to achieve this layout with Flutter - dart

Question

I'm at a complete loss as to how to create this layout:
My code:
import 'package:flutter/material.dart';
class SignupScreen extends StatefulWidget {
final _username, _email, _password;
#override
_SignupScreenState createState() => new _SignupScreenState();
}
class _SignupScreenState extends State<SignupScreen> {
#override
Widget build(BuildContext context) {
return new Scaffold(
body: new Center(
child: new Container(
padding: EdgeInsets.fromLTRB(20.0, 0.0, 20.0, 0.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
new TextField(
keyboardType: TextInputType.emailAddress,
decoration: new InputDecoration(
hintText: 'Email'
)
),
new TextField(
obscureText: true,
decoration: new InputDecoration(
hintText: 'Password'
)
),
new RaisedButton(
onPressed: () {},
child: new Text('Sign In')
),
new FlatButton(
onPressed: () {},
child: new Text('Sign Up')
),
],
)
)
)
);
}
}
The result:
How do I get that FlatButton at the bottom of the screen?

Answer 1

import 'package:flutter/material.dart';
void main() => runApp(
new MaterialApp(
debugShowCheckedModeBanner: false,
home: new HomePage(),
),
);
class HomePage extends StatefulWidget {
#override
_HomePageState createState() => new _HomePageState();
}
class _HomePageState extends State<HomePage> {
#override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text('Home'),
),
body: new Padding(
padding: const EdgeInsets.all(15.0),
child: new Column(
children: <Widget>[
new Expanded(
child: new Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new TextField(
decoration: new InputDecoration(labelText: 'Username'),
),
new TextField(
decoration: new InputDecoration(labelText: 'Password'),
),
new Container(
padding: const EdgeInsets.only(top: 10.0),
width: double.infinity,
child: new RaisedButton(
onPressed: () {},
child: new Text('Login'),
),
),
],
),
),
new Container(
width: double.infinity,
child: new RaisedButton(
onPressed: () {},
child: new Text('Register'),
),
),
],
),
),
);
}
}
Hope this helps!