material_ui #

The official Flutter Material Design library, implementing Google's Material Design design system for Flutter applications.

material_ui provides a complete, modern suite of visual components, motion, typography, color system, and theming tools to build beautiful and accessible user interfaces on all screen sizes.

See also the cupertino_ui package, which is Flutter's official iOS- and macOS-style design library.

New to the package? #

Install the package with the following command:

flutter add material_ui

See Flutter's main getting started guide for information about using Flutter and material_ui.

Migrating existing code to this package #

The standalone material_ui package was previously built directly into the core Flutter framework as package:flutter/material.dart. It has been decoupled from the flutter/flutter repository into its new home here in flutter/packages.

Follow the steps below to migrate:

Step 1: Migrate imports #

We've included a data driven Dart fix to help users migrate. Simply run the following command:

dart fix --apply --code=migrate_design_widgets

This performs the equivalent of adding material_ui to your project and changing imports of package:flutter/material.dart to package:material_ui/material_ui.dart.

Step 2: Migrate localizations (if needed) #

If you are not currently using the GlobalMaterialLocalizations or GlobalCupertinoLocalizations classes from flutter/flutter's flutter_localizations package, then you are already good to go. For those that do need to migrate off of these classes, simply use the new versions of these classes from material_ui and cupertino_ui, respectively.

A typical app can use the following localization delegate from material_ui to cover all of the localization strings in Flutter, Material, and Cupertino:

  localizationDelegates: GlobalMaterialLocalizations.delegates,

Step 3: Bridge legacy dependencies (if needed) #

If your app uses third-party packages or subtrees that still import and rely on package:flutter/material.dart, use MaterialUiCompatibilityBridge to bridge ThemeData and MaterialLocalizations so legacy widgets resolve correctly within modern widget trees.

Wrap your app using MaterialApp.builder:

import 'package:material_ui/material_ui.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      builder: (BuildContext context, Widget? child) {
        return MaterialUiCompatibilityBridge(child: child!);
      },
      home: const HomeScreen(),
    );
  }
}

You can also wrap individual subtrees that contain legacy package widgets:

Scaffold(
  appBar: AppBar(title: const Text('Modern Screen')),
  body: MaterialUiCompatibilityBridge(
    child: LegacyPackageWidget(),
  ),
)

Features #

The material_ui packcage contains everything you need to create a fully-featured Material app, such as:

• App Structure & Navigation: MaterialApp, Scaffold, AppBar, NavigationBar, BottomSheet, TabBar, SearchAnchor, SearchBar, Dialog
• Buttons & Interaction: ElevatedButton, TextButton, IconButton, FloatingActionButton, SegmentedButton, InkWell, MenuBar
• Inputs & Selection: TextField, Checkbox, Radio, Switch, Slider, DropdownMenu, DatePicker, TimePicker
• Display & Feedback: Card, Chip, ListTile, Badge, Divider, ProgressIndicator, SnackBar, Tooltip, CarouselView, VerticalDivider
• Theming & Color: ThemeData, ColorScheme, TextTheme, dynamic color generation, Material 3 design tokens, typography, and motion easing curves
• Internationalization: MaterialLocalizations and GlobalMaterialLocalizations for multi-locale support

Changelog #

See the Changelog for a list of new features and breaking changes.

Documentation & Resources #

• Material Design 3 Specification
• Flutter Material Widget Catalog
• API Reference
• Issue Tracker