我刚把Flutter版本从2.5.3更新到了2.8。现在出现了以下错误,我不知道如何解决。安装的所有插件都没有出现错误,看起来错误来自于内部类自身,但我不知道我的应用程序中的哪个部分引发了这个错误:
../../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:\desarrollo\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1070
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\desarrollo\flutter\bin\flutter.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
我在我的pubspec文件中没有声明flutter_math_fork
。
我的flutter doctor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!
我已经尝试了:flutter clean,flutter upgrade和invalidate cache/restart。
欢迎提出任何建议。
flutter clean
吗? - Jahidul Islam