如何解决Flutter中的“FwfhTextStyle”错误？

Question

由于这个错误，我的应用程序无法构建，我无法理解这个错误。 我尝试了'flutter upgrade'和'flutter get'，但没有什么帮助。

Launching lib/main.dart on SM A127F in debug mode...
Running Gradle task 'assembleDebug'...
../../flutter/.pub-cache/hosted/pub.dartlang.org/fwfh_text_style-2.7.3+2/lib/fwfh_text_style.dart:11:7: Error: The non-abstract class 'FwfhTextStyle' is missing implementations for these members:
 - TextStyle.fontVariations
Try to either
 - provide an implementation,
 - inherit an implementation from a superclass or mixin,
 - mark the class as abstract, or
 - provide a 'noSuchMethod' implementation.

class FwfhTextStyle extends _TextStyleProxy {
      ^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_style.dart:789:33: Context: 'TextStyle.fontVariations' is defined here.
  final List<ui.FontVariation>? fontVariations;
                                ^^^^^^^^^^^^^^ 


FAILURE: Build failed with an exception.

* Where:
Script '/home/vrs/flutter/packages/flutter_tools/gradle/flutter.gradle' line: 1159

* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command '/home/vrs/flutter/bin/flutter'' finished with non-zero exit value 1

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 16s
Exception: Gradle task assembleDebug failed with exit code 1

- Vinayak Sutar

Answer 1

我升级到Flutter 3.3.0 后遇到了这个错误。

在做了一些搜索后，我通过运行项目中的软件包升级解决了它。

flutter pub upgrade 

然后

flutter clean 

flutter pub get

- Ahmad Darwesh

---

这个错误是由于一个名为“Better Player”的插件引起的。我已经将其移除。 - Vinayak Sutar

Answer 2

请尝试更新依赖项flutter pub upgrade fwfh_text_style以进行测试。

- SHYAM

Answer 3

我认为这是关于final List<ui.FontVariation>? fontVariations;的定义问题。它可能被定义在最后一个索引位置，也可能根本没有定义。

为了避免错误，我会像这样做：List<ui.FontVariation> fontVariations = [];

- Aslan Demir

Answer 4

如果还没有添加，请尝试在您的项目中添加fwfh_text_style这个插件。它对我很有效。

- Bhagwan Sawant

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你的回答可以通过提供更多支持信息来改进。请编辑以添加进一步的细节，例如引用或文档，以便他人可以确认你的答案是正确的。您可以在帮助中心中找到有关如何编写良好答案的更多信息。 - mohammad mobasher

Answer 5

我尝试了flutter upgrade和flutter clean，但对我没有用。

然后我运行了这个命令flutter pub outdated，它很有效。

- Shady Boshra

Answer 6

我必须运行 rm -rf ~/.pub-cache 然后运行 flutter pub get ‍♂️

- David Chopin