lib

Creating a custom widget in Flutter often involves organizing your code into multiple files. Here's an example of how to create a custom button widget spread across multiple files: main.dart, custom_button.dart, and my_home_page.dart. This demonstrates a basic Flutter application that uses a custom button widget:

main.dart

import 'package:flutter/material.dart';
import 'my_home_page.dart';

void main() {
  runApp(
    MaterialApp(
      home: MyHomePage(),
    ),
  );
}

my_home_page.dart

import 'package:flutter/material.dart';
import 'custom_button.dart';

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Custom Widget Example'),
        ),
        body: Center(
          child: CustomButton(
            text: 'Click Me',
            onPressed: () {
              // Your button's action here
            },
          ),
        ),
      ),
    );
  }
}

custom_button.dart

import 'package:flutter/material.dart';

class CustomButton extends StatelessWidget {
  final String text;
  final Function onPressed;

  CustomButton({required this.text, required this.onPressed});

  @override
  Widget build(BuildContext context) {
    return ElevatedButton(
      onPressed: () => onPressed(),
      child: Text(text),
    );
  }
}

This code demonstrates how you can create a custom button widget in the custom_button.dart file, use it in the my_home_page.dart file, and start the app in the main.dart file. Make sure to import the necessary files in each Dart file as shown above.

To run this Flutter app, create these files in your project, and then execute main.dart to start the app. The custom button widget (CustomButton) can be easily reused throughout your application.