appearance 0.0.1

Flutter package to implement Light, Dark and Sytem Theme mode, and persist it on restart of app.

Appearance

Flutter package that easily implement Light, Dark and System theme mode in your application and persists the theme mode on restart of the application.

🚀 Demo: Appearance

📱 Screenshots

🛠 Installation

1. Add dependency to pubspec.yaml file:
   Get the latest version from the 'Installing' tab on pub.dev

dependencies:
  appearance: ^latest_version

2. Import the package

import 'package:appearance/appearance.dart';

📘 How to use

1. Initialize SharedPreferencesManager singleton for SharedPreference and add it before runApp() method.

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await SharedPreferencesManager.instance.init();
  runApp(const MyApp());
}

2. extend your root class with AppearanceState using keyword with.

class _MyAppState extends State<MyApp> with AppearanceState { }

3. Wrap your MaterialApp or CupertinoApp with BuildWithAppearance

BuildWithAppearance(
    initial: ThemeMode.light, // optional : default value is [ThemeMode.system]
    builder: (context) => MaterialApp()
);

Using MaterialApp

BuildWithAppearance(
    initial: ThemeMode.light, // optional : default value is [ThemeMode.system]
    builder: (context) => MaterialApp(
        title: 'Appearance (Material Example)',
        themeMode: Appearance.of(context)?.mode,
        theme: ThemeData(
            brightness: Brightness.light,
        ),
        darkTheme: ThemeData(
            brightness: Brightness.dark,
        ),
        home: const HomeMaterialPage(),
    ),
);

Using CupertinoApp

BuildWithAppearance(
    initial: ThemeMode.light, // optional : default value is [ThemeMode.system]
    builder: (context) {
        return CupertinoApp(
            title: 'Appearance (Cupertino Example)',
            theme: CupertinoThemeData(
                brightness: Appearance.of(context)?.cupertinoBrightness!,
            ),
            localizationsDelegates: const [
                DefaultMaterialLocalizations.delegate,
                DefaultCupertinoLocalizations.delegate,
                DefaultWidgetsLocalizations.delegate,
            ],
            home: HomeCupertinoPage(),
        );
    },
);

🌟 Features

• Light, Dark and System mode options to change theme of app.

• Theme persistance: Saved theme is persisted using SharedPreferences on restart.

• Auto Listen Theme Mode changes, without adding extra listener.

• Material and Cupertino, both apps are supported.

🧰 Parameters

• initial: [optional]
  Set the initial ThemeMode of the app, by default its value is ThemeMode.system

Change Theme Mode

You can use the setMode method to change the theme mode of the app.

 // sets theme mode to System
 Appearance.of(context)?.setMode(ThemeMode.system),

 // sets theme mode to Light
 Appearance.of(context)?.setMode(ThemeMode.light),

 // sets theme mode to Dark
 Appearance.of(context)?.setMode(ThemeMode.dark),

Get Theme Mode

 // get active theme mode
 Appearance.of(context)?.mode

Get Cupertino Theme brightness

 // get active cupertino theme brightness
 Appearance.of(context)?.cupertinoBrightness!,

💻 Example

Check out the example app in the example directory for both Material and Cupertino.

• MaterialApp Example

• CupertinoApp Example

📝Contribution

Feel free to contribute to this project.

• If you found a bug or have a feature request, open an issue.

• If you want to contribute, submit a pull request.

💳 License

This project is LICENSED under the MIT License. Use it freely, but let's play nice and give credit where it's due!

🎉 Conclusion

I will be happy to answer any questions that you may have on this approach,
If you liked this package, don't forget to show some ❤️ by smashing the ⭐.