add one font for a whole <widget> flutter code example
Example 1: https://flutter.dev/custom-fonts/#from-packages
flutter:
fonts:
- family: Raleway
fonts:
- asset: fonts/Raleway-Regular.ttf
- asset: fonts/Raleway-Italic.ttf
style: italic
- family: RobotoMono
fonts:
- asset: fonts/RobotoMono-Regular.ttf
- asset: fonts/RobotoMono-Bold.ttf
weight: 700
Example 2: flutter set default font family for whole app
MaterialApp(
title: 'Custom Fonts',
theme: ThemeData(fontFamily: 'Raleway'),
home: MyHomePage(),
);