如何使用包 Shared_Preferences 保存主题

Question

帮我弄清楚在代码中的什么地方写一些东西，以便在重新启动应用程序后保存主题... 安装了animated_theme_switcher 包，我不知道在哪里开处方才能保留主题

我的代码：

@override
Widget build(BuildContext context) {
final isPlatformDark = WidgetsBinding.instance!.window.platformBrightness == Brightness.dark;
final theme = isPlatformDark ? darkTheme : lightTheme;

child: ThemeProvider(
        initTheme: theme,
        builder: (context, theme) {
          return MaterialApp(
            theme: theme,
            home: MyApp1(),
            debugShowCheckedModeBanner: false,
          );
        },
      ),

以及按钮上的操作

                                       onPressed: () async {
                                          var brightness =
                                              ThemeProvider.of(context)!.brightness;
                                          ThemeSwitcher.of(context)!.changeTheme(
                                            theme: brightness == Brightness.light
                                                ? darkTheme
                                                : lightTheme,
                                            reverseAnimation:
                                            brightness == Brightness.dark
                                                ? true
                                                : false,
                                          );
                                          setState(() {
                                            toggle = !toggle;
                                          });
                                        },

Answer 1

尝试使用adaptive_theme， 自适应主题：https://pub.dev/packages/adaptive_theme