adaptive_flutter_layout

pub package License: MIT Flutter Dart

A production-ready Flutter package that automatically adapts widget layouts across mobile, tablet, and desktop breakpoints using a clean, declarative API.

Overview

Building responsive Flutter apps often involves repetitive MediaQuery checks and complex conditional logic. adaptive_flutter_layout simplifies this process by providing a set of widgets and utilities that handle breakpoint detection and layout switching automatically.

Features

  • 🚀 Declarative Layouts: Switch between mobile, tablet, and desktop views easily.
  • 📱 Built-in Breakpoints: Intelligent defaults for standard device sizes.
  • ⚙️ Customizable: Set your own global breakpoints via AdaptiveLayoutConfig.
  • 🛠️ Utility Extensions: Get screen type information directly from BuildContext.
  • 📦 AdaptiveValue: Resolve non-widget values (like padding or colors) based on screen size.

Installation

Add this to your pubspec.yaml:

dependencies:
  adaptive_flutter_layout: ^1.0.0

Then run:

flutter pub get

Quick Start

import 'package:adaptive_flutter_layout/adaptive_flutter_layout.dart';

// ... inside your build method
AdaptiveLayout(
  mobile: (context) => MobileView(),
  tablet: (context) => TabletView(),
  desktop: (context) => DesktopView(),
  fallback: (context) => MobileView(),
)

Usage

AdaptiveLayout Widget

The primary widget for switching between different views based on the screen width.

AdaptiveLayout(
  mobile: (context) => const Center(child: Text('Mobile')),
  tablet: (context) => const Center(child: Text('Tablet')),
  desktop: (context) => const Center(child: Text('Desktop')),
)

AdaptiveBuilder

A builder that exposes the current AdaptiveScreenType enum for more granular control.

AdaptiveBuilder(
  builder: (context, screenType) {
    return switch (screenType) {
      AdaptiveScreenType.mobile => MobileContent(),
      AdaptiveScreenType.tablet => TabletContent(),
      AdaptiveScreenType.desktop => DesktopContent(),
    };
  },
)

AdaptiveValue

A utility for resolving values without adding widgets to the tree.

final padding = AdaptiveValue.of<EdgeInsets>(
  context,
  mobile: EdgeInsets.all(8),
  tablet: EdgeInsets.all(16),
  desktop: EdgeInsets.all(24),
);

BuildContext Extensions

Easily check the current screen type anywhere you have a BuildContext.

final type = context.adaptiveScreenType;
final isMobile = context.isMobile;
final isTablet = context.isTablet;
final isDesktop = context.isDesktop;

Custom Breakpoints via AdaptiveLayoutConfig

Wrap your app root to set global breakpoint thresholds.

AdaptiveLayoutConfig(
  mobileBreakpoint: 600,
  tabletBreakpoint: 1024,
  desktopBreakpoint: 1440,
  child: MyApp(),
)

API Reference

Class Constructor Parameters
AdaptiveLayout AdaptiveLayout(...) mobile, tablet, desktop, fallback (all WidgetBuilder?)
AdaptiveBuilder AdaptiveBuilder(...) builder (Widget Function(BuildContext, AdaptiveScreenType))
AdaptiveValue AdaptiveValue.of(...) context, mobile, tablet, desktop, fallback (types T?)
AdaptiveLayoutConfig AdaptiveLayoutConfig(...) mobileBreakpoint, tabletBreakpoint, desktopBreakpoint, child

Testing

You can easily test your adaptive layouts by setting the physical size in your widget tests:

testWidgets('renders mobile widget', (tester) async {
  tester.view.physicalSize = const Size(400, 800);
  tester.view.devicePixelRatio = 1.0;
  await tester.pumpWidget(MyApp());
  expect(find.text('mobile'), findsOneWidget);
});

To run all package tests:

flutter test

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

MIT License

Copyright (c) 2025 George Ikwegbu

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Author

George Ikwegbu (2025)

Libraries

adaptive_flutter_layout