erinziyi/google-fonts-flutter

A Flutter package for accessing the Google Fonts API

google_fonts

NOTE: This package is in Beta. The API is subject to change.

The google_fonts package for Flutter allows you to easily use any of the 960 fonts (and their variants) from fonts.google.com in your Flutter app.

Getting Started

With the google_fonts package, .ttf files do not need to be stored in your assets folder and mapped in the pubspec. Instead, they are fetched once via http at runtime, and cached in the app's file system. This is ideal for development, and can be the preferred behavior for production apps that are looking to reduce the app bundle size.

For example, say you want to use the Lato font from Google Fonts in your Flutter app.

First, add the google_fonts package to your pubspec dependencies.

To import GoogleFonts:

import 'package:google_fonts/google_fonts.dart';

To use GoogleFonts with the default TextStyle:

Text(
  'This is Google Fonts',
  style: GoogleFonts.lato(),
),

To use GoogleFonts with an existing TextStyle:

Text(
  'This is Google Fonts',
  style: GoogleFonts.lato(
    textStyle: TextStyle(color: Colors.blue, letterSpacing: .5),
  ),
),

or

Text(
  'This is Google Fonts',
  style: GoogleFonts.lato(textStyle: Theme.of(context).textTheme.display1),
),

To override the fontSize, fontWeight, or fontStyle:

Text(
  'This is Google Fonts',
  style: GoogleFonts.lato(
    textStyle: Theme.of(context).textTheme.display1,
    fontSize: 48,
    fontWeight: FontWeight.w700,
    fontStyle: FontStyle.italic,
  ),
),

You can also use GoogleFonts.latoTextTheme() to make or modify an entire text theme to use the "Lato" font.

MaterialApp(
  theme: ThemeData(
    textTheme: GoogleFonts.latoTextTheme(
      Theme.of(context).textTheme,
    ),
  ),
);

Or, if you want a TextTheme where a couple of styles should use a different font:

final textTheme = Theme.of(context).textTheme;

MaterialApp(
  theme: ThemeData(
    textTheme: GoogleFonts.latoTextTheme(textTheme).copyWith(
      body1: GoogleFonts.oswaldTextStyle(textStyle: textTheme.body1),
    ),
  ),
);

What's Next?

In a future release, this package will defer to .ttf files you specify in the pubspec before fetching them via http. This means you can get the best of both worlds by having access to all fonts.google.com fonts and their variants during development, while also ensuring your production app has an optimal offline/slow connection experience.