Flutter
Flutter Reusable Custom Widgets
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Flutter widgets are the custom made components in flutter that make the code more cleaner, more efficient and more scalable. Custom widgets mean flexibility, no copy-paste code, better app maintainability, and a clear sense of how the application will look like.
Advantages of using Reusable Custom widgets
Code Reusability: Saves from repetition because it is easier to use ready-made UI elements stored within a single file.
Maintainability: Ideally to handle changes when the UI is defined in one widget rather than scattered all over the application.
Consistency: Prevents inconsistency in the design by implementing the same widget all through the application.
Modularization: Cuts code into more logical parts because components of UI will be grouped into separate blocks.Faster Development: Can increase the development speed by the usage of some pre defined parts.
Steps to Create a Reusable Custom Widget
- Common UI elements that are used repeatedly all over the app (e.g., buttons, cards text fields, dropdown, etc).
- Create a stateless or stateful widget to define the UI components.
- Pass parameters to the custom widget to make it flexible (e.g., onPressed functions, label text, colors, etc).
Example: Reusable Custom Button Widget
import 'package:flutter/material.dart';
// Define a reusable custom button widget
class CustomButton extends StatelessWidget {
final String name;
final VoidCallback onPressed;
final Color color;
// custom properties sonstructor
CustomButton({
required this.name,
required this.onPressed,
this.color = Colors.green,
});
@override
Widget build(BuildContext context) {
return ElevatedButton(
onPressed: onPressed,
child: Text(name),
);
}
}
void main() {
runApp(MyFlutterApp());
}
class MyFlutterApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(title: Text('Custom Button Example')),
body: Center(
child: CustomButton(
name: 'Button Click',
onPressed: () {
},
),
),
),
);
}
}Key Features in This Example
- Customization: The CustomButton uses the onPressed functions, label text, and colors as parameters to make it reusable & flexible.
- Default Values: The color parameter has a default value (Colors.green) but can be overridden when used.
Final Thoughts
Reusable custom widgets in Flutter make it easy to create a clean and organized app. By turning repeated UI elements into custom widgets, you can simplify your code, make it easier to manage, and speed up development.
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