How To Add Flushbar Helper Message In Flutter Android

dependencies:
  flutter:
    sdk: flutter
  flushbar: ^1.10.4

flutter pub get

import 'package:flushbar/flushbar.dart';
import 'package:flushbar/flushbar_helper.dart';

void show_FlushbarHelper(BuildContext context) {
  FlushbarHelper.createInformation(
    title: 'Exit',
    message: 'Do you want to close the app ?',
  ).show(context);
}

import 'package:flutter/material.dart';
import 'package:flushbar/flushbar.dart';
import 'package:flushbar/flushbar_helper.dart';

void main() {
  runApp(MyApp());
}
class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter FlushBar Example ',
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        appBar: AppBar(
          centerTitle: true,
          backgroundColor: Colors.indigo,
          title: Text('Flushbar'),
        ),
        body: MyHomePage(),
      ),
    );
  }
}
class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: Padding(
        padding: const EdgeInsets.only(top:28.0),
        child: Container(
          alignment: Alignment.topCenter,
          color: Colors.white,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.center,
            children: <Widget>[
              MaterialButton(
                child: Text("Flush Bar Helper",style: TextStyle(color: Colors.white),),
                color: Colors.green,
                onPressed: (){
                  show_FlushbarHelper(context);
                },
              ),
            ],
          ),
        ),
      ),
    );
  }
}
//Simple Flushbar with a button

void show_FlushbarHelper(BuildContext context) {
  FlushbarHelper.createInformation(
    title: 'Exit',
    message: 'Do you want to close the app ?',
  ).show(context);
}