examples/api/lib/cupertino/dialog/cupertino_alert_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 CupertinoAlertDialog

import 'package:flutter/cupertino.dart';

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

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

  static const String _title = 'CupertinoAlertDialog Sample';

  @override
  Widget build(BuildContext context) {
    return const CupertinoApp(
      title: _title,
      home: ActionSheetSample(title: _title),
    );
  }
}

class ActionSheetSample extends StatelessWidget {
  const ActionSheetSample({Key? key, required this.title}) : super(key: key);

  final String title;

  // This shows a CupertinoModalPopup which hosts a CupertinoAlertDialog.
  void _showAlertDialog(BuildContext context) {
    showCupertinoModalPopup<void>(
      context: context,
      builder: (BuildContext context) => CupertinoAlertDialog(
        title: const Text('Alert'),
        content: const Text('Proceed with destructive action?'),
        actions: <CupertinoDialogAction>[
          CupertinoDialogAction(
            /// This parameter indicates this action is the default,
            /// and turns the action's text to bold text.
            isDefaultAction: true,
            onPressed: () {
              Navigator.pop(context);
            },
            child: const Text('No'),
          ),
          CupertinoDialogAction(
            /// This parameter indicates the action would perform
            /// a destructive action such as deletion, and turns
            /// the action's text color to red.
            isDestructiveAction: true,
            onPressed: () {
              Navigator.pop(context);
            },
            child: const Text('Yes'),
          )
        ],
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return CupertinoPageScaffold(
      navigationBar: CupertinoNavigationBar(
        middle: Text(title),
      ),
      child: Center(
        child: CupertinoButton(
          onPressed: () => _showAlertDialog(context),
          child: const Text('CupertinoAlertDialog'),
        ),
      ),
    );
  }
}