Responsive Framework

Abstract

1. Introduction

Supporting multiple display sizes often means recreating the same layout multiple times. Under the traditional _Bootstrap_ approach, building responsive UI is time consuming, frustrating and repetitive. Furthermore, getting everything pixel perfect is near impossible and simple edits take hours.

Responsive Framework was created out of a desire for a better way to manage responsiveness. The ability to automatically adapt UI to different sizes opens up a world of possibilities. Here at Codelessly, we're building a Flutter app UI and website builder, development tools, and UI templates to increase productivity. If that sounds interesting, you'll want to subscribe to updates below

Responsive Framework is licensed under Zero-Clause BSD and released as Emailware. If you like this project or it helped you, please subscribe to updates. Although it is not required, you might miss the goodies we share!

2. Objective

Easily make Flutter apps responsive. Automatically adapt UI to different screen sizes. Responsiveness made simple. Demo: https://gallery.codelessly.com/flutterwebsites/minimal/

This project demonstrates how Dart, Flutter, Bootstrap can be applied to a real-world Mobile App Development problem.

4. Technology Stack

• ResponsiveValue
• ResponsiveVisibility
• ResponsiveConstraints
• ResponsiveRowColumn
• ResponsiveGridView
• ResponsiveScaledBox
• MaxWidthBox

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

• Flutter SDK
• Android Studio or VS Code with Flutter plugin
• Android / iOS device or emulator
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/Codelessly/ResponsiveFramework.git
cd ResponsiveFramework

responsive_framework: ^latest_version

import 'package:responsive_framework/responsive_framework.dart';

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      builder: (context, child) => ResponsiveBreakpoints.builder(
        child: child!,
        breakpoints: [
          const Breakpoint(start: 0, end: 450, name: MOBILE),
          const Breakpoint(start: 451, end: 800, name: TABLET),
          const Breakpoint(start: 801, end: 1920, name: DESKTOP),
          const Breakpoint(start: 1921, end: double.infinity, name: '4K'),
        ],
      ),
      initialRoute: "/",
    );
  }
}

// Example: if the screen is bigger than the Mobile breakpoint, build full width AppBar icons and labels.
if (ResponsiveBreakpoints.of(context).largerThan(MOBILE))
    FullWidthAppBarItems()

// Booleans
ResponsiveBreakpoints.of(context).isDesktop;
ResponsiveBreakpoints.of(context).isTablet;
ResponsiveBreakpoints.of(context).isMobile;
ResponsiveBreakpoints.of(context).isPhone;

// Conditionals
ResponsiveBreakpoints.of(context).equals(DESKTOP)
ResponsiveBreakpoints.of(context).largerThan(MOBILE)
ResponsiveBreakpoints.of(context).smallerThan(TABLET)
ResponsiveBreakpoints.of(context).between(MOBILE, TABLET)
...

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

• Add push notifications with Firebase Cloud Messaging
• Add offline support with local caching
• Publish an internal test build on the Play Store

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

1. Which framework is used and why (native vs cross-platform)?
2. How is app state managed across screens?
3. Where is the data stored — locally, Firebase or a REST backend?
4. How are permissions (camera, location, storage) handled?
5. How would you publish this app to the Play Store / App Store?

9. Source Code & License

This project is developed by Codelessly and published on GitHub under the MIT License. Please follow the license terms and credit the original author when you use or modify this code.