Flutter代码编辑与展示插件dart_pad_widget的使用

Flutter代码编辑与展示插件dart_pad_widget的使用

介绍

dart_pad_widget 是一个新的Flutter包，允许你轻松地将DartPad嵌入到你的Flutter Web应用程序中。通过这个插件，你可以在应用中提供一个交互式的代码编辑器和运行环境，方便用户编写和测试Dart代码。

安装

首先，在你的pubspec.yaml文件中添加dart_pad_widget依赖：

dependencies:
  flutter:
    sdk: flutter
  dart_pad_widget: ^最新版本号

然后运行 flutter pub get 来安装依赖。

示例代码

以下是一个完整的示例demo，展示了如何在Flutter Web应用中使用dart_pad_widget插件。这个示例包括了多个DartPad组件，每个组件展示了不同的功能和配置。

import 'package:flutter/material.dart';
import 'package:dart_pad_widget/dart_pad_widget.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('DartPad Widget Demo'),
        ),
        body: SingleChildScrollView(
          child: Center(
            child: Container(
              padding: EdgeInsets.all(16.0),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.center,
                children: [
                  // 示例1：简单的Dart代码
                  DartPad(
                    key: Key('example1'),
                    width: 500,
                    height: 400,
                    code: 'void main() => print("Hello DartPad Widget");',
                  ),
                  SizedBox(height: 20),

                  // 示例2：带有提示、测试和解决方案的Dart代码
                  DartPad(
                    key: Key('dart_with_test_solution_hint'),
                    width: 800,
                    height: 400,
                    code: '''String helloDartPad() {
  return "Hello DartPad Widget";
}''',
                    hintText: 'You don\'t sound excited enough!',
                    testCode: '''main () {
  final String message = helloDartPad();
  if (message == "Hello DartPad Widget!") {
    return _result(true);
  }
  _result(false, ["Invalid hello message: \$message"]);
}''',
                    solutionCode: '''String helloDartPad() {
  return "Hello DartPad Widget!";
}''',
                  ),
                  SizedBox(height: 20),

                  // 示例3：可运行的Flutter代码（暗模式）
                  DartPad(
                    key: Key('runnable_flutter_code_dark_mode'),
                    width: 1000,
                    height: 400,
                    embeddingChoice: EmbeddingChoice.flutter,
                    darkMode: true,
                    code: """import 'package:flutter/material.dart';

Future main() async {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(),
        body: Center(
          child: Container(
            child: Text('Hello, World!'),
          ),
        ),
      ),
    );
  }
}""",
                  ),
                  SizedBox(height: 20),

                  // 示例4：可运行的Flutter代码（亮模式，自动运行）
                  DartPad(
                    key: Key('runnable_flutter_code_light_mode_auto_run'),
                    width: 800,
                    height: 400,
                    split: 60,
                    embeddingChoice: EmbeddingChoice.flutter,
                    darkMode: false,
                    runImmediately: true,
                    code: """import 'package:flutter/material.dart';

Future main() async {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        brightness: Brightness.dark,
      ),
      home: Scaffold(
        appBar: AppBar(),
        body: Center(
          child: Container(
            child: Text('Hello, World!'),
          ),
        ),
      ),
    );
  }
}""",
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}