直播app系統原始碼，在 Flutter 中更改文字的字體系列實現的相關程式碼

將資產和字型新增到 pubspec.yaml 檔案中的 flutter 屬性。您可以嚮應用程式新增一種或多種字體系列。在本教程中，我們將新增兩種字型。

flutter:

 uses-material-design: true
 assets:
  - assets/font/
 fonts:
  - family: Font1
   fonts:
    - asset: assets/font/font1.ttf
  - family: Font2
   fonts:
    - asset: assets/font/font2.ttf

​

main.dart

import 'package:flutter/material.dart';
void main() {
 runApp(MaterialApp(
  home: MyApp(),
 ));
}
class MyApp extends StatefulWidget {
 @override
 _MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
 @override
 Widget build(BuildContext context) {
  return Scaffold(
   appBar: AppBar(
    title: new Text("Flutter Tutorial - googleflutter.com"),
   ),
   body: Center(
     child: Column(children: <Widget>[
    Container(
     padding: EdgeInsets.all(20),
     child: Text(
      'Welcome to Flutter Tutorial by googleflutter.com',
      style: TextStyle(
        fontFamily: "Font1", fontSize: 40, fontWeight: FontWeight.bold),
     ),
    ),
    Container(
      padding: EdgeInsets.all(20),
      child: Text(
       'Welcome to Flutter Tutorial by googleflutter.com',
       style: TextStyle(
         fontFamily: "Font2",
         fontSize: 40,
         fontWeight: FontWeight.bold),
      )),
   ])),
  );
 }
}

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