show_dialog.0.dart

// 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.

// Flutter code sample for showDialog

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static const String _title = 'Flutter Code Sample';

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      restorationScopeId: 'app',
      title: _title,
      home: MyStatelessWidget(),
    );
  }
}

class MyStatelessWidget extends StatelessWidget {
  const MyStatelessWidget({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: OutlinedButton(
          onPressed: () {
            Navigator.of(context).restorablePush(_dialogBuilder);
          },
          child: const Text('Open Dialog'),
        ),
      ),
    );
  }

  static Route<Object?> _dialogBuilder(
      BuildContext context, Object? arguments) {
    return DialogRoute<void>(
      context: context,
      builder: (BuildContext context) =>
          const AlertDialog(title: Text('Material Alert!')),
    );
  }
}