How to Redirect to a New Page on Button Click in Flutter

The sample Google flutter code below illustrate how to redirect to a new page on button click in flutter.

The code is based on flutter version 1.0.0

Main.dart (App entry point)

import 'package:flutter/material.dart';
import 'redirect_new_screen.dart';

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      //home: MyHomePage(title: 'Flutter Demo Home Page'),
      home: FirstScreen(),
    );
  }
}
redirect_new_screen.dart
import 'package:flutter/material.dart';

class FirstScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('First Screen'),
      ),
      body: Center(
        child: RaisedButton(
          color: Colors.red,
          child: Text('Go to Second Screen'),
          onPressed: () {
            //Use`Navigator` widget to push the second screen to out stack of screens
            Navigator.of(context)
                .push(MaterialPageRoute<Null>(builder: (BuildContext context) {
              return new SecondScreen();
            }));
          },
        ),
      ),
    );
  }
}

class SecondScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Second Screen'),
      ),
      body: Center(
        child: RaisedButton(
          color: Colors.red,
          child: Text('Go back to First Screen'),
          onPressed: () {
            //Use`Navigator` widget to pop oir go back to previous route / screen
            Navigator.pop(context);
          },
        ),
      ),
    );
  }
}

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