Example of navigation and route in flutter

flutter_navigator.dart

import 'package:flutter/material.dart';
import 'package:test_app/other_page.dart';

void main() => runApp(
    new MaterialApp(
      title: 'Flutter Demo',
      theme: new ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: new HomePage(),
      routes: routes,
    ));

var routes = <String, WidgetBuilder> {
  OtherPage.routeNAme: (BuildContext context) => new OtherPage(),
};

class HomePage extends StatelessWidget {

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text('Flutter Navigator Demo'),
      ),
      floatingActionButton: new FloatingActionButton(
        onPressed: (){
          Navigator.pushNamed(context, OtherPage.routeNAme);
        },
        child: new Icon(Icons.add),
      ),
    );
  }
}