Flutter
Dynamic Theming in Flutter with Material 3
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Introduction
Material You, which emerged in Android 12, inaugurates a new way of developing apps for everyone since it gives people the power to adapt their app interfaces in real time. The Material 3 allows the app developers to dynamically theme apps based on the color schemes of wallpaper, among other setting preferences. Flutter, UI toolkit by Google provides support for Material 3 helping to create visually consistent and themed applications across devices.
This paper seeks to offer a detailed guideline of the use of Material You in Flutter apps in doing dynamic theming and why it is used.
Why is such Information Helpful?
Dynamic theming is not just a trend. it's a practical approach to improving user comfort and satisfaction while simplifying development. From a developer's perspective, adopting Material You which Flutter offers
- Improved User Experience: It means that apps are able to change their color and themes in relation to the user’s settings of the device.
- Modern Design Practices: Following present day designing trends, Material 3 assists developers in designing applications that look perfect
- Cross-Platform Uniformity: The opportunities of Flutter and Material 3 make themes consistent to work in Android and iOS as well as other ones.
Actual Content
Prerequisites
Make sure that you use the latest Flutter SDK for our project. preferably that which contains only the stable versions of the dependencies.
dependencies:
flutter:
sdk: flutter
dynamic_color: ^1.7.0 Step 1: Enable Material 3
To use Material 3 in our Flutter app use the useMaterial3 parameter to true in our ThemeData.
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(
useMaterial3: true,
),
home: HomeScreen(),
);
}
}
Step 2: Apply Dynamic Color Extraction
Material You uses adaptive colors based on the user’s wallpaper to generate dynamic color themes. In Flutter to achieve this use the dynamic_color package or material_color_utilities library.
import 'package:flutter/material.dart';
import 'package:dynamic_color/dynamic_color.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return DynamicColorBuilder(
builder: (ColorScheme? lightDynamic, ColorScheme? darkDynamic) {
ColorScheme lightScheme = lightDynamic ?? ColorScheme.fromSwatch();
ColorScheme darkScheme = darkDynamic ?? ColorScheme.fromSwatch(brightness: Brightness.dark);
return MaterialApp(
theme: ThemeData(colorScheme: lightScheme, useMaterial3: true),
darkTheme: ThemeData(colorScheme: darkScheme, useMaterial3: true),
home: HomeScreen(),
);
},
);
}
}
class HomeScreen extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text('Material You in Flutter')),
body: Center(child: Text('Welcome to Material You!')),
);
}
} Step 3: Develop Widgets for Material 3
The Material 3 contains new widgets and modifications of the previous ones. Ensure our app leverages components like FloatingActionButton.large or OutlinedButton styled according to Material 3 guidelines:
FloatingActionButton.large(
onPressed: () {},
child: Icon(Icons.add),
) Step 4: Testing and Optimization
- It is necessary to test dynamic theming on Android 12+ devices to check the effectiveness of using the wallpaper as a source of color extraction.
- In case the fallback colors option is not supported in the OS of the device, make sure our app doesn’t use it aggressively for enhancing preferences.
Conclusion
When implementing Material You (Material 3) in the Flutter app. They make our app nice look and feel when the user interacts with it and in harmony with the existing continual design trends. With increasing demands placed on the user interface, dynamic theming will help to continue to keep our app looking good and performing well across all platforms and devices.
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