flutter/examples/api/lib/widgets/routes/show_general_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 showGeneralDialog

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.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({super.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 RawDialogRoute<void>(
      pageBuilder: (
        BuildContext context,
        Animation<double> animation,
        Animation<double> secondaryAnimation,
      ) {
        return const AlertDialog(title: Text('Alert!'));
      },
    );
  }
}