show_dialog.1.dart 2.06 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.

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/// Flutter code sample for [showDialog].
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import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
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  const MyApp({super.key});
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  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
      home: const DialogExample(),
    );
  }
}

class DialogExample extends StatelessWidget {
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  const DialogExample({super.key});
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  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('showDialog Sample')),
      body: Center(
        child: OutlinedButton(
          onPressed: () => _dialogBuilder(context),
          child: const Text('Open Dialog'),
        ),
      ),
    );
  }

  Future<void> _dialogBuilder(BuildContext context) {
    return showDialog<void>(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          title: const Text('Basic dialog title'),
          content: const Text(
              'A dialog is a type of modal window that\n'
              'appears in front of app content to\n'
              'provide critical information, or prompt\n'
              'for a decision to be made.'),
          actions: <Widget>[
            TextButton(
              style: TextButton.styleFrom(
                textStyle: Theme.of(context).textTheme.labelLarge,
              ),
              child: const Text('Disable'),
              onPressed: () {
                Navigator.of(context).pop();
              },
            ),
            TextButton(
              style: TextButton.styleFrom(
                textStyle: Theme.of(context).textTheme.labelLarge,
              ),
              child: const Text('Enable'),
              onPressed: () {
                Navigator.of(context).pop();
              },
            ),
          ],
        );
      },
    );
  }
}