字体下的意外关键资产（（字符串）） - 颤动和飞镖中的移动应用程序错误

Posted 2023-03-12

【中文标题】字体下的意外关键资产（（字符串）） - 颤动和飞镖中的移动应用程序错误

【英文标题】：Unexpected key assets ((String)) under font - Mobile app error in flutter and dart

【发布时间】：2019-09-20 19:03:03

【问题描述】：

我是移动开发的新手，我正在使用 Dart 和 Flutter 构建移动应用程序，包括 android 和 ios 应用程序。问题是我无法启动我的应用程序，并且不断收到与 pubspec.yaml 文件相关的错误。

当我评论fonts: 部分时，应用程序运行正常。但是我需要加载字体，所以这并不能解决我的问题。

这是我的pubspec.yaml

name: simple_app
description: A new Flutter project.

version: 1.0.0+1

environment:
  sdk: ">=2.1.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter

  cupertino_icons: ^0.1.2

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  uses-material-design: true
  fonts:
    - family: Oxygen
      fonts:
        - assets: assets/fonts/Oxygen-Regular.ttf
        - assets: assets/fonts/Oxygen-Light.ttf
        - assets: assets/fonts/Oxygen-Bold.ttf

  assets:
    - assets/images/

下面是我在控制台中不断遇到的错误。

Error detected in pubspec.yaml:
Unexpected key assets ((String)) under font.
Unexpected key assets ((String)) under font.
Unexpected key assets ((String)) under font.
C:\Users\user\Documents\mobile_app\flutter\simple_app\pubspec.yaml
exit code 1

【问题讨论】：

资产，而不是资产。请查看flutter.dev/docs/cookbook/design/fonts

omg 非常感谢@AlekseyPotapov，这也是我的问题，它让我疯狂地试图弄清楚我做错了什么

【参考方案1】：

字体： - 家庭：Poppins 字体： - 资产：资产/字体/Poppins-Black.ttf

检查资产和资产之间是否存在差异。请检查并更新它。

【参考方案2】：

请看我的工作示例

  fonts:
    - family: icomoon
      fonts:
        - asset: assets/fonts/IcoMoon.ttf

    - family: Qwigley
      fonts:
        - asset: assets/fonts/Qwigley-Regular.ttf

    - family: Dosis
      fonts:
        - asset: assets/fonts/dosis/Dosis-Regular.otf
          weight: 400
        - asset: assets/fonts/dosis/Dosis-Medium.otf
          weight: 500
        - asset: assets/fonts/dosis/Dosis-SemiBold.otf
          weight: 600
        - asset: assets/fonts/dosis/Dosis-Bold.otf
          weight: 800
        - asset: assets/fonts/dosis/Dosis-ExtraBold.otf
          weight: 900

【参考方案3】：

试试这个pubspec.yaml:

name: custom_fonts
description: An example of how to use custom fonts with Flutter

dependencies:
  flutter:
    sdk: flutter

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  fonts:
    - family: DUBAI
      fonts:
        - asset: assets/fonts/DUBAI-BOLD.TTF
        - asset: assets/fonts/DUBAI-LIGHT.TTF
        - asset: assets/fonts/DUBAI-MEDIUM.TTF
        - asset: assets/fonts/DUBAI-REGULAR.TTF
    - family: Dima
      fonts:
        - asset: assets/fonts/DimaPlatinum.ttf

  uses-material-design: true

  assets:
    - assets/azmoon.db
    - assets/qi1.png

也许你想看看main.dart：

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget 
  @override
  Widget build(BuildContext context) 
    return MaterialApp(
      title: 'Custom Fonts',
      // Set Raleway as the default app font.
      theme: ThemeData(fontFamily: 'Raleway'),
      home: MyHomePage(),
    );
  


class MyHomePage extends StatelessWidget 
  @override
  Widget build(BuildContext context) 
    return Scaffold(
      // The AppBar uses the app-default Raleway font.
      appBar: AppBar(title: Text('Custom Fonts')),
      body: Center(
        // This Text widget uses the RobotoMono font.
        child: Text(
          'Roboto Mono sample',
          style: TextStyle(fontFamily: 'RobotoMono'),
        ),
      ),
    );
  

请参阅https://flutter.dev/docs/cookbook/design/fonts 上的完整教程。

如果您遇到“错误：无法在 pubspec.yaml 中找到资产条目”问题，请参阅 Error: unable to locate asset entry in pubspec.yaml: "assets/fonts/Lato-Regular.ttf"。 :)