1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
// 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 GeneralDialogApp());
class GeneralDialogApp extends StatelessWidget {
const GeneralDialogApp({super.key});
@override
Widget build(BuildContext context) {
return const MaterialApp(
restorationScopeId: 'app',
home: GeneralDialogExample(),
);
}
}
class GeneralDialogExample extends StatelessWidget {
const GeneralDialogExample({super.key});
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: OutlinedButton(
onPressed: () {
/// This shows an alert dialog.
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!'));
},
);
}
}