Flutter Material 图标：有些图标在 flutter Icons class 中不存在

Question

我意识到这是 this question 的重复，但那个问题似乎没有任何问题 activity 所以我试图让更多人关注这个问题。

我正在尝试使用 Material 图标中的 percent 图标，尽管在 fonts.google.com 站点中，它显示了 flutter 实现（下面附有屏幕截图），当我尝试调用它来自 flutter 代码，我得到错误 The getter 'percent' isn't defined for the type 'Icons'.（下面附有屏幕截图）。

这是什么原因，为什么 google 试图显示某些图标支持 flutter 而它显然不支持？

这是我的 flutter doctor -v 输出：

[√] Flutter (Channel stable, 2.8.0, on Microsoft Windows [Version 10.0.19041.1348], locale en-US)
    • Flutter version 2.8.0 at C:\Users\adnan\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision cf44000065 (23 hours ago), 2021-12-08 14:06:50 -0800
    • Engine revision 40a99c5951
    • Dart version 2.15.0
    • Pub download mirror https://pub.flutter-io.cn
    • Flutter download mirror https://storage.flutter-io.cn

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at C:\Users\adnan\AppData\Local\Android\sdk
    • Platform android-31, build-tools 30.0.3
    • Java binary at: C:\Program Files\Android\Android Studio1\jre\bin\java     
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)    
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Android Studio (version 2020.3)
    • Android Studio at C:\Program Files\Android\Android Studio1
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)

[!] Android Studio (version 4.1)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    X Unable to determine bundled Java version.
    • Try updating or re-installing Android Studio.

[√] VS Code (version 1.62.3)
    • VS Code at C:\Users\adnan\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.29.0

[√] VS Code (version 1.61.0-insider)
    • VS Code at C:\Users\adnan\AppData\Local\Programs\Microsoft VS Code Insiders
    • Flutter extension can be installed from:
       https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[√] Connected device (3 available)
    • sdk gphone x86 (mobile) • emulator-5554 • android-x86    • Android 11 (API 30) (emulator)
    • Chrome (web)            • chrome        • web-javascript • Google Chrome 96.0.4664.45
    • Edge (web)              • edge          • web-javascript • Microsoft Edge 96.0.1054.43

! Doctor found issues in 1 category.

Answer 1

显然，现在 Flutter 2.10，他们添加了一些图标。

Last but not least, we’ve added 1,028 new Material icons.

这有点回答了这个问题，所以明确的答案是每当我们遇到这样的问题时，我们只能坐着等待 flutter 集成这些图标，或者使用另一个图标包。

Flutter Material 图标：有些图标在 flutter Icons class 中不存在

Flutter Material icons: some icons dont exist in the flutter's Icons class

material-design

flutter

google-material-icons