scaled_app 0.3.0

Scale the entire UI design proportionally, useful when your UI design is fixed-width.

Scale the entire UI design proportionally.

Button, image, font, everything is scaled automatically.

Before:

• 250x250 square is the same size across devices

After:

• 250x250 square is two thirds the screen width across devices

• if we resize the screenshots above to be the same width
• then everything appears the same size as below

Features

Use this package in your Flutter app when:

• your UI design is fixed-width
• you want to scale the entire UI, not just part of it

Getting Started

In the pubspec.yaml of your flutter project, add the following dependency:

dependencies:
  ...
  scaled_app: ^0.3.0

Import it:

import 'package:scaled_app/scaled_app.dart';

Usage

Replace runApp with runAppScaled

void main() {
  // 1st way to use this package
  // baseWidth is the screen width used in your UI design
  runAppScaled(const MyApp(), baseWidth: 375);
}

Or, replace WidgetsFlutterBinding with ScaledWidgetsFlutterBinding

void main() {
  // 2nd way to use this package
  // Scaling will be applied when [applyScaling] returns true
  ScaledWidgetsFlutterBinding.ensureInitialized(
    baseWidth: 375,
    applyScaling: (deviceWidth) => deviceWidth > 300 && deviceWidth < 400,
  );
  runAppScaled(const MyApp());
}

Use MediaQueryData.scale to scale size, viewInsets, viewPadding, etc.

class PageRoute extends StatelessWidget {
  const PageRoute({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MediaQuery(
      data: MediaQuery.of(context).scale(baseWidth),
      child: const Scaffold(...),
    );
  }
}

Example

https://github.com/LastMonopoly/scaled_app/blob/master/example/lib/main.dart

Reference

https://juejin.cn/post/7078816723666731021