[Flutter] Router Navigation

Basic navigation by using 'Navigator.push' & 'Navigator.pop()', for example, we have two screen, screen1 and screen2, we want to navigate between two screens:

// Screen1.dart

import 'package:flutter/material.dart';
import 'screen2.dart';

class Screen1 extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.red,
        title: Text('Screen 1'),
      ),
      body: Center(
        child: RaisedButton(
          color: Colors.red,
          child: Text('Go Forwards To Screen 2'),
          onPressed: () {
            Navigator.push(
              context,
              MaterialPageRoute(builder: (context) {
                return Screen2();
              }),
            );
          },
        ),
      ),
    );
  }
}

Screen2.dart:

import 'package:flutter/material.dart';

class Screen2 extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.blue,
        title: Text('Screen 2'),
      ),
      body: Center(
        child: RaisedButton(
          color: Colors.blue,
          child: Text('Go Back To Screen 1'),
          onPressed: () {
            Navigator.pop(context);
          },
        ),
      ),
    );
  }
}

Using the named route:

In main.dart, we can list all the routes:

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      // home: Screen0(),
      initialRoute: '/',
      routes: {
        '/': (context) => Screen0(),
        '/first': (context) => Screen1(),
        '/second': (context) => Screen2()
      },
    );
  }
}

To be noticed: 'home' & 'initialRoute' cannot be used at the same time.

       child: Column(
          children: <Widget>[
            RaisedButton(
              color: Colors.red,
              child: Text('Go To Screen 1'),
              onPressed: () {
                Navigator.pushNamed(context, '/first');
              },
            ),
            RaisedButton(
              color: Colors.blue,
              child: Text('Go To Screen 2'),
              onPressed: () {
                Navigator.pushNamed(context, '/second');
              },
            ),
          ],
        ),