import 'package:flutter/material.dart';

class FloatingActionButtonDemo extends StatelessWidget {

  @override

  Widget build(BuildContext context) {

    final Widget _floatingActionButton = FloatingActionButton(

      onPressed: () {},

      child: Icon(Icons.add),

      elevation: 0.0,

      backgroundColor: Colors.black87,

      // shape: BeveledRectangleBorder(

      //   borderRadius: BorderRadius.circular(30.0)

      // ),

    );

    final Widget _floatingActionButtonExtended = FloatingActionButton.extended(

      onPressed: () {},

      icon: Icon(Icons.add),

      label: Text('Add'),

    );

    return Scaffold(

      appBar: AppBar(

        title: Text('FloatingActionButtonDemo'),

        elevation: 0.0,

      ),

      floatingActionButton: _floatingActionButton,

      floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,

      bottomNavigationBar: BottomAppBar(

        child: Container(

          height: 80.0,

        ),

        shape: CircularNotchedRectangle(),

      ),

    );

  }

}