scaffold_messenger_state.show_snack_bar.0.dart 1.1 KB
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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/material.dart';

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/// Flutter code sample for [ScaffoldMessengerState.showSnackBar].
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void main() => runApp(const ShowSnackBarExampleApp());
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class ShowSnackBarExampleApp extends StatelessWidget {
  const ShowSnackBarExampleApp({super.key});
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  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
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        appBar: AppBar(title: const Text('ScaffoldMessengerState Sample')),
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        body: const Center(
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          child: ShowSnackBarExample(),
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        ),
      ),
    );
  }
}

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class ShowSnackBarExample extends StatelessWidget {
  const ShowSnackBarExample({super.key});
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  @override
  Widget build(BuildContext context) {
    return OutlinedButton(
      onPressed: () {
        ScaffoldMessenger.of(context).showSnackBar(
          const SnackBar(
            content: Text('A SnackBar has been shown.'),
          ),
        );
      },
      child: const Text('Show SnackBar'),
    );
  }
}