bottomappbar.dart

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('BottomAppBar demo'),
      ),
      body: Center(
        child: Text('body'),
      ),
      bottomNavigationBar: BottomAppBar(
        child: Container(
          color: Colors.yellow,
          height: 50.0,
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: <Widget>[
              Text('This is Bottom'),
              Icon(Icons.arrow_downward),
            ]
          ),
        ),
      ),
      floatingActionButtonLocation: FloatingActionButtonLocation.endDocked,
      floatingActionButton: FloatingActionButton(
        child: Icon(Icons.thumb_up),
        onPressed: null,
      ),
    );
  }
}