Как я могу получить текущее семейное имя шрифта для приложения флаттера и что такое значение по умолчанию?
я пытался
Theme.of(context).textTheme.
а также
Theme.of(context).
но нет атрибута для семейства шрифтов.
Как я могу получить текущее семейное имя шрифта для приложения флаттера и что такое значение по умолчанию?
я пытался
Theme.of(context).textTheme.
а также
Theme.of(context).
но нет атрибута для семейства шрифтов.
Шрифтом по умолчанию для MaterialApp является roboto
, шрифт Google.
Шрифт по умолчанию для MaterialApp описан в
/flutter/packages/flutter/lib/src/material/typography.dart
на iOS стандартная тема TextTheme
static const TextTheme whiteCupertino = TextTheme(
display4 : TextStyle(debugLabel: 'whiteCupertino display4', fontFamily: '.SF UI Display', inherit: true, color: Colors.white70, decoration: TextDecoration.none),
display3 : TextStyle(debugLabel: 'whiteCupertino display3', fontFamily: '.SF UI Display', inherit: true, color: Colors.white70, decoration: TextDecoration.none),
display2 : TextStyle(debugLabel: 'whiteCupertino display2', fontFamily: '.SF UI Display', inherit: true, color: Colors.white70, decoration: TextDecoration.none),
display1 : TextStyle(debugLabel: 'whiteCupertino display1', fontFamily: '.SF UI Display', inherit: true, color: Colors.white70, decoration: TextDecoration.none),
headline : TextStyle(debugLabel: 'whiteCupertino headline', fontFamily: '.SF UI Display', inherit: true, color: Colors.white, decoration: TextDecoration.none),
title : TextStyle(debugLabel: 'whiteCupertino title', fontFamily: '.SF UI Display', inherit: true, color: Colors.white, decoration: TextDecoration.none),
subhead : TextStyle(debugLabel: 'whiteCupertino subhead', fontFamily: '.SF UI Text', inherit: true, color: Colors.white, decoration: TextDecoration.none),
body2 : TextStyle(debugLabel: 'whiteCupertino body2', fontFamily: '.SF UI Text', inherit: true, color: Colors.white, decoration: TextDecoration.none),
body1 : TextStyle(debugLabel: 'whiteCupertino body1', fontFamily: '.SF UI Text', inherit: true, color: Colors.white, decoration: TextDecoration.none),
caption : TextStyle(debugLabel: 'whiteCupertino caption', fontFamily: '.SF UI Text', inherit: true, color: Colors.white70, decoration: TextDecoration.none),
button : TextStyle(debugLabel: 'whiteCupertino button', fontFamily: '.SF UI Text', inherit: true, color: Colors.white, decoration: TextDecoration.none),
subtitle : TextStyle(debugLabel: 'whiteCupertino subtitle', fontFamily: '.SF UI Text', inherit: true, color: Colors.white, decoration: TextDecoration.none),
overline : TextStyle(debugLabel: 'whiteCupertino overline', fontFamily: '.SF UI Text', inherit: true, color: Colors.white, decoration: TextDecoration.none),
);
на Android по умолчанию TextTheme
static const TextTheme whiteMountainView = TextTheme(
display4 : TextStyle(debugLabel: 'whiteMountainView display4', fontFamily: 'Roboto', inherit: true, color: Colors.white70, decoration: TextDecoration.none),
display3 : TextStyle(debugLabel: 'whiteMountainView display3', fontFamily: 'Roboto', inherit: true, color: Colors.white70, decoration: TextDecoration.none),
display2 : TextStyle(debugLabel: 'whiteMountainView display2', fontFamily: 'Roboto', inherit: true, color: Colors.white70, decoration: TextDecoration.none),
display1 : TextStyle(debugLabel: 'whiteMountainView display1', fontFamily: 'Roboto', inherit: true, color: Colors.white70, decoration: TextDecoration.none),
headline : TextStyle(debugLabel: 'whiteMountainView headline', fontFamily: 'Roboto', inherit: true, color: Colors.white, decoration: TextDecoration.none),
title : TextStyle(debugLabel: 'whiteMountainView title', fontFamily: 'Roboto', inherit: true, color: Colors.white, decoration: TextDecoration.none),
subhead : TextStyle(debugLabel: 'whiteMountainView subhead', fontFamily: 'Roboto', inherit: true, color: Colors.white, decoration: TextDecoration.none),
body2 : TextStyle(debugLabel: 'whiteMountainView body2', fontFamily: 'Roboto', inherit: true, color: Colors.white, decoration: TextDecoration.none),
body1 : TextStyle(debugLabel: 'whiteMountainView body1', fontFamily: 'Roboto', inherit: true, color: Colors.white, decoration: TextDecoration.none),
caption : TextStyle(debugLabel: 'whiteMountainView caption', fontFamily: 'Roboto', inherit: true, color: Colors.white70, decoration: TextDecoration.none),
button : TextStyle(debugLabel: 'whiteMountainView button', fontFamily: 'Roboto', inherit: true, color: Colors.white, decoration: TextDecoration.none),
subtitle : TextStyle(debugLabel: 'whiteMountainView subtitle', fontFamily: 'Roboto', inherit: true, color: Colors.white, decoration: TextDecoration.none),
overline : TextStyle(debugLabel: 'whiteMountainView overline', fontFamily: 'Roboto', inherit: true, color: Colors.white, decoration: TextDecoration.none),
);
и вы можете получить семейство шрифтов с помощью следующего кода
DefaultTextStyle.of(context).style.fontFamily
В Flutter по умолчанию шрифт на Android - Roboto
.
Но я использую Android-монитор для запуска своего приложения Flutter. Я нахожу шрифт по умолчанию monospace
. Кто подскажет, в чем проблема?
Код выглядит следующим образом:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
// primarySwatch: Colors.yellow,
primaryColor: Colors.teal,
// default font-family is 'monospace',
fontFamily: DefaultTextStyle.of(context).style.fontFamily,
// replace with 'Roboto',but the result is 'monospace'
// fontFamily: 'Roboto',
// use 'monospaced',the result is 'monospace'
// fontFamily: 'monospaced',
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.
// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int counter = 0;
void _incrementCounter() {
setState(() {
// This call to setState tells the Flutter framework that something has
// changed in this State, which causes it to rerun the build method below
// so that the display can reflect the updated values. If we changed
// _counter without calling setState(), then the build method would not be
// called again, and so nothing would appear to happen.
counter++;
print('defalut font is: ${DefaultTextStyle.of(context).style.fontFamily}');
});
}
@override
Widget build(BuildContext context) {
// This method is rerun every time setState is called, for instance as done
// by the _incrementCounter method above.
//
// The Flutter framework has been optimized to make rerunning build methods
// fast, so that you can just rebuild anything that needs updating rather
// than having to individually change instances of widgets.
return Scaffold(
appBar: AppBar(
// Here we take the value from the MyHomePage object that was created by
// the App.build method, and use it to set our appbar title.
title: Text(
widget.title,
),
),
body: Text('$counter'),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
); // This trailing comma makes auto-formatting nicer for build methods.
}
}