scaffold_bottom_navigation.dart

import 'package:flutter/material.dart';

void main() => runApp(new MaterialApp(
      home: new Scaffold(
        backgroundColor: Colors.yellowAccent,
        appBar: ...,
        body:...,
        drawer: ...,
        bottomNavigationBar: new BottomNavigationBar(items: [
          new BottomNavigationBarItem(
            icon: new Icon(Icons.home),
            title: new Text("Home"),
          ),
          new BottomNavigationBarItem(
            icon: new Icon(Icons.search),
            title: new Text("Search"),
          )
        ]),
      ),
    ));