Nilen Patel Inc.

AppBar is the widget in flutter which contains toolbar in particular flutter application. AppBar which is auto fixed toolbar at the top of the mobile screen. 

In AppBar, we can create different toolbar widgets like actions, menu button, icon buttons and more. 

import 'package:flutter/material.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
  const MyApp({Key key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: MyStatelessWidget(),
    );
  }
}
class MyStatelessWidget extends StatelessWidget {
  const MyStatelessWidget({Key key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('AppBar Demo'),
      ),
      body: null,
    );
  }
}