如何正确使用以下代码以在抖动中实现暗/亮模式

Question

我想使用开关和复选框在我的应用程序中实现暗/亮模式。我使用下面的代码实现了暗/亮模式。但是它不能正常工作。我怎样才能成功做到这一点？以下代码有什么问题？请帮助我解决这个问题

import 'package:dynamic_theme/dynamic_theme.dart';
import 'package:dynamic_theme/theme_switcher_widgets.dart';
import 'package:flutter/material.dart';


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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return DynamicTheme(
        defaultBrightness: Brightness.light,
        data: (brightness) => ThemeData(
          primarySwatch: Colors.indigo,
          brightness: brightness,
        ),
        themedWidgetBuilder: (context, theme) {
          return MaterialApp(
            title: 'Flutter Demo',
            theme: theme,
            home: MyHomePage(title: 'Flutter Demo Home Page'),
          );
        });
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);
  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Easy Theme"),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Switch(
              value: isSwitched,
              onChanged: (value) {
                setState(() {
                  isSwitched = value;
                });
              },
              activeTrackColor: Colors.lightGreenAccent,
              activeColor: Colors.green,
            ),
            Checkbox(
              value: isSwitched,
              onChanged: (value) {
                setState(() {
                  isSwitched = value;
                });
              },
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: showChooser,
        child: const Icon(Icons.add),
      ),

    );
  }

  void showChooser() {
    showDialog<void>(
        context: context,
        builder: (context) {
          return BrightnessSwitcherDialog(
            onSelectedTheme: (brightness) {
              DynamicTheme.of(context).setBrightness(brightness);
            },
          );
        });
  }

  bool isSwitched = true;


  void changeBrightness() {
    DynamicTheme.of(context).setBrightness(
        Theme
            .of(context)
            .brightness == Brightness.dark
            ? Brightness.light
            : Brightness.dark);
  }
}

我使用了动态主题包来实现这一目标。它可以很好地与按钮配合使用，但是我不知道如何使用Switch / checkbox

来实现它