Flutter Material 图标：flutter 的 Icons 类中不存在某些图标

Question

我意识到这是这个问题的重复，但这个问题似乎没有任何活动，所以我试图让更多人关注这个问题。

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我正在尝试使用percentMaterial 图标中的图标，尽管在 fonts.google.com 网站中，它显示了 flutter 实现（下面附有屏幕截图），当我尝试从 flutter 代码调用它时，我收到错误The getter \'percent\' isn\'t defined for the type \'Icons\'.（下面附有屏幕截图）。

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这是什么原因，为什么谷歌试图显示一些图标支持颤振，而它显然不支持？

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这是我的flutter doctor -v输出：

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[\xe2\x88\x9a] Flutter (Channel stable, 2.8.0, on Microsoft Windows [Version 10.0.19041.1348], locale en-US)\n    \xe2\x80\xa2 Flutter version 2.8.0 at C:\\Users\\adnan\\flutter\n    \xe2\x80\xa2 Upstream repository https://github.com/flutter/flutter.git\n    \xe2\x80\xa2 Framework revision cf44000065 (23 hours ago), 2021-12-08 14:06:50 -0800\n    \xe2\x80\xa2 Engine revision 40a99c5951\n    \xe2\x80\xa2 Dart version 2.15.0\n    \xe2\x80\xa2 Pub download mirror https://pub.flutter-io.cn\n    \xe2\x80\xa2 Flutter download mirror https://storage.flutter-io.cn\n\n[\xe2\x88\x9a] Android toolchain - develop for Android devices (Android SDK version 30.0.3)\n    \xe2\x80\xa2 Android SDK at C:\\Users\\adnan\\AppData\\Local\\Android\\sdk\n    \xe2\x80\xa2 Platform android-31, build-tools 30.0.3\n    \xe2\x80\xa2 Java binary at: C:\\Program Files\\Android\\Android Studio1\\jre\\bin\\java     \n    \xe2\x80\xa2 Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)    \n    \xe2\x80\xa2 All Android licenses accepted.\n\n[\xe2\x88\x9a] Chrome - develop for the web\n    \xe2\x80\xa2 Chrome at C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe\n\n[\xe2\x88\x9a] Android Studio (version 2020.3)\n    \xe2\x80\xa2 Android Studio at C:\\Program Files\\Android\\Android Studio1\n    \xe2\x80\xa2 Flutter plugin can be installed from:\n       https://plugins.jetbrains.com/plugin/9212-flutter\n    \xe2\x80\xa2 Dart plugin can be installed from:\n       https://plugins.jetbrains.com/plugin/6351-dart\n    \xe2\x80\xa2 Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)\n\n[!] Android Studio (version 4.1)\n    \xe2\x80\xa2 Android Studio at C:\\Program Files\\Android\\Android Studio\n    \xe2\x80\xa2 Flutter plugin can be installed from:\n       https://plugins.jetbrains.com/plugin/9212-flutter\n    \xe2\x80\xa2 Dart plugin can be installed from:\n       https://plugins.jetbrains.com/plugin/6351-dart\n    X Unable to determine bundled Java version.\n    \xe2\x80\xa2 Try updating or re-installing Android Studio.\n\n[\xe2\x88\x9a] VS Code (version 1.62.3)\n    \xe2\x80\xa2 VS Code at C:\\Users\\adnan\\AppData\\Local\\Programs\\Microsoft VS Code\n    \xe2\x80\xa2 Flutter extension version 3.29.0\n\n[\xe2\x88\x9a] VS Code (version 1.61.0-insider)\n    \xe2\x80\xa2 VS Code at C:\\Users\\adnan\\AppData\\Local\\Programs\\Microsoft VS Code Insiders\n    \xe2\x80\xa2 Flutter extension can be installed from:\n       https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter\n\n[\xe2\x88\x9a] Connected device (3 available)\n    \xe2\x80\xa2 sdk gphone x86 (mobile) \xe2\x80\xa2 emulator-5554 \xe2\x80\xa2 android-x86    \xe2\x80\xa2 Android 11 (API 30) (emulator)\n    \xe2\x80\xa2 Chrome (web)            \xe2\x80\xa2 chrome        \xe2\x80\xa2 web-javascript \xe2\x80\xa2 Google Chrome 96.0.4664.45\n    \xe2\x80\xa2 Edge (web)              \xe2\x80\xa2 edge          \xe2\x80\xa2 web-javascript \xe2\x80\xa2 Microsoft Edge 96.0.1054.43\n\n! Doctor found issues in 1 category.\n

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Answer 1

显然，现在Flutter 2.10他们添加了一些图标。

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最后但并非最不重要的一点是，我们\xe2\x80\x99 添加了 1,028 个新的 Material 图标。

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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，我们只能坐等 flutter 集成这些图标，或者使用另一个 Icons 包。

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