Flutter: Courier没有Unicode支持错误

Question

我正在尝试使用字体系列NunitoSans &我必须修改一个预先存在的应用程序。就字体而言，pubspec.yaml文件如下所示：

    flutter:
  fonts:
    - family: NunitoSans
      fonts:
        - asset: fonts/NunitoSans-Regular.ttf
          weight: 600
        - asset: fonts/NunitoSans-ExtraLight.ttf
          weight: 100
        - asset: fonts/NunitoSans-Light.ttf
          weight: 200
        - asset: fonts/NunitoSans-SemiBold.ttf
          weight: 700
        - asset: fonts/NunitoSans-Bold.ttf
          weight: 800
        - asset: fonts/NunitoSans-ExtraBold.ttf
          weight: 900
    - family: OverpassMono
      fonts:
        - asset: fonts/OverpassMono-Regular.ttf
          weight: 600
        - asset: fonts/OverpassMono-Light.ttf
          weight: 100
    - family: AppIcons
      fonts:
        - asset: fonts/AppIcons.ttf
          weight: 500
    

  assets:
    - assets/QR.svg
    - assets/welcome_animation.flr
    - assets/send_animation.flr

这就是我尝试使用字体的方式。如果我放置了除fonts/NunitoSans-Rgualar.ttf之外的任何内容，我会得到一个错误，该字体不存在于所需的位置。

final font1 = await rootBundle.load('fonts/NunitoSans-Regular.ttf');

final font2 = await rootBundle.load('fonts/NunitoSans-Regular.ttf');

任何帮助都是非常感谢的。这是我的完整错误(该链接对我没有帮助，对不起)：

Courier has no Unicode support see https://github.com/DavBfr/dart_pdf/wiki/Fonts-Management

 The font is not in my assets, its like this:

directory

Answer 1

  fonts:
- family: Montserrat
  fonts:
    - asset: assets/fonts/Montserrat-Regular.ttf
- family: MontserratMedium
  fonts:
    - asset: assets/fonts/MontserratMedium-Medium.ttf    
- family: MontserratLight
  fonts:
    - asset: assets/fonts/MontserratLight-Light.otf    
- family: OpenSans  
  fonts:
    - asset: assets/fonts/OpenSans-Regular.ttf
- family: Palatino
  fonts:
    - asset: assets/fonts/Palatino-Italic.ttf

在Widget中使用如下所示

 TextStyle(
fontFamily: 'Montserrat',
color: Colors.white,
fontSize: 28,
fontWeight: FontWeight.w100,
//fontStyle: FontStyle.normal,
letterSpacing: 2,
);

TextStyle(
fontFamily: 'MontserratMedium',
color: Colors.white,
fontSize: 17,
letterSpacing: 0,
);