错误：非抽象类&#39；InternalSelecableMathState&#39； [英] Error: The non-abstract class 'InternalSelectableMathState'

问题描述

我刚刚从2.5.3版更新到2.8版。我有以下错误，我不知道如何解决它。在安装的任何插件上都没有错误，错误似乎来自内部类本身，我不知道错误是在应用程序的哪个部分抛出的：

../../AppData/Local/Pub/Cache/hosted/pub.dartlang.org/flutter_math_fork-0.3.3+1/lib/src/widgets/selectable.dart:407:7: Error: The non-abstract class 'InternalSelectableMathState' is missing implementations for these members:
 - TextSelectionDelegate.copySelection
 - TextSelectionDelegate.cutSelection
 - TextSelectionDelegate.pasteText
 - TextSelectionDelegate.selectAll
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 InternalSelectableMathState extends State<InternalSelectableMath>
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^
/C:/desarrollo/flutter/packages/flutter/lib/src/services/text_input.dart:985:8: Context: 'TextSelectionDelegate.copySelection' is defined here.
  void copySelection(SelectionChangedCause cause);
       ^^^^^^^^^^^^^
/C:/desarrollo/flutter/packages/flutter/lib/src/services/text_input.dart:965:8: Context: 'TextSelectionDelegate.cutSelection' is defined here.
  void cutSelection(SelectionChangedCause cause);
       ^^^^^^^^^^^^
/C:/desarrollo/flutter/packages/flutter/lib/src/services/text_input.dart:973:16: Context: 'TextSelectionDelegate.pasteText' is defined here.
  Future<void> pasteText(SelectionChangedCause cause);
               ^^^^^^^^^
/C:/desarrollo/flutter/packages/flutter/lib/src/services/text_input.dart:979:8: Context: 'TextSelectionDelegate.selectAll' is defined here.
  void selectAll(SelectionChangedCause cause);
       ^^^^^^^^^


FAILURE: Build failed with an exception.

* Where:
Script 'C:desarrolloflutterpackagesflutter_toolsgradleflutter.gradle' line: 1070

* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:desarrolloflutterinflutter.bat'' 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 8m 5s
Exception: Gradle task assembleDebug failed with exit code 1

我尚未在我的发布规范上声明flutter_math_fork。

我的颤振医生输出：

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 2.8.0, on Microsoft Windows [Versión 10.0.19041.1348], locale es-ES)
[√] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[√] Chrome - develop for the web
[√] Android Studio (version 2020.3)
[√] VS Code (version 1.62.3)
[√] Connected device (3 available)

• No issues found!

我试过了：清除抖动、抖动升级、缓存失效/重启。

如有任何建议，欢迎光临。

推荐答案

我已通过强制更新flutter_math_fork添加到pubSpec：

解决了此问题

flutter_math_fork: ^0.5.0

当我升级到2.8稳定版本时，我不知道为什么要安装flutter_math_fork-0.3.3+1。

这篇关于错误：非抽象类&#39；InternalSelecableMathState&#39；的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！