使用 Getx 小部件-Flutter 运行时显示错误

Posted 2023-02-23

【中文标题】使用 Getx 小部件-Flutter 运行时显示错误

【英文标题】：showing Error while running using Getx widget-Flutter

【发布时间】：2021-05-24 13:27:15

【问题描述】：

此错误仅在我使用 get 包时发生。为了解决这个问题，我从 .pub-cache/hosted/pub.dartlang.org 目标中删除了 get 文件夹，然后再次导入它，但没有任何反应。

Launching lib\main.dart on sdk gphone x86 arm in debug mode...
Running Gradle task 'assembleDebug'...

/D:/Flutter/.pub-cache/hosted/pub.dartlang.org/get-3.25.4/lib/
get_navigation/src/root/get_cupertino_app.dart:121:9: 
Error: Type 'RouteInformationProvider' not found.

final RouteInformationProvider routeInformationProvider;
^^^^^^^^^^^^^^^^^^^^^^^^

/D:/Flutter/.pub-cache/hosted/pub.dartlang.org/get-3.25.4/lib/
get_navigation/src/root/get_cupertino_app.dart:122:9: Error: Type
'RouteInformationParser' not found.
final RouteInformationParser<Object> routeInformationParser;
^^^^^^^^^^^^^^^^^^^^^^

/D:/Flutter/.pub-cache/hosted/pub.dartlang.org/get-3.25.4/lib/
get_navigation/src/root/get_cupertino_app.dart:122:9: Error:
Expected 0 type arguments.
final RouteInformationParser<Object> routeInformationParser;
^

/D:/Flutter/.pub-cache/hosted/pub.dartlang.org/get-3.25.4/lib/
get_navigation/src/root/get_cupertino_app.dart:123:9: Error: Type
'RouterDelegate' not found.
final RouterDelegate<Object> routerDelegate;
^^^^^^^^^^^^^^

/D:/Flutter/.pub-cache/hosted/pub.dartlang.org/get-3.25.4/lib/
get_navigation/src/root/get_cupertino_app.dart:123:9: Error:
Expected 0 type arguments.
final RouterDelegate<Object> routerDelegate;
^


/D:/Flutter/.pub-cache/hosted/pub.dartlang.org/get-3.25.4/lib/
get_navigation/src/root/get_material_app.dart:130:9: Error:
Expected 0 type arguments.
final RouteInformationParser<Object> routeInformationParser;
^^^^^^^^^^^^^^
/D:/Flutter/.pub-cache/hosted/pub.dartlang.org/get-3.25.4/lib/
get_navigation/src/root/get_material_app.dart:132:9: Error: '
BackButtonDispatcher' isn't a type.
final BackButtonDispatcher backButtonDispatcher;
^^^^^^^^^^^^^^^^^^^^
/D:/Flutter/.pub-cache/hosted/pub.dartlang.org/get-3.25.4/lib/
get_navigation/src/root/get_material_app.dart:245:25: Error:
Method not found: 'MaterialApp.router'.
? MaterialApp.router(
^^^^^^
FAILURE: Build failed with an exception.
* Where:
Script 'D:\Flutter\packages\flutter_tools\gradle\flutter.gradle'
line: 896
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'D:\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 22s
Exception: Gradle task assembleDebug failed with exit code 1

我使用了很多其他包，但只有在使用get包时才会出现错误。

【问题讨论】：

升级 Flutter 后这个问题为我解决了。

【参考方案1】：

打开你的安卓工作室终端

1 - 清理你的项目

flutter clean 

2 - 将颤振通道更改为稳定

Flutter channels:
  master
  dev
  beta
* stable

确保您在稳定的频道上

3 - 现在你需要升级flutter升级（在终端上）

flutter upgrade 

输出

Flutter is already up to date on channel stable
Flutter 2.0.1 • channel stable • https://github.com/flutter/flutter.git
Framework • revision c5a4b4029c (2 days ago) • 2021-03-04 09:47:48 -0800
Engine • revision 40441def69
Tools • Dart 2.12.0

4 - 再次清理

flutter clean 

如果你在颤振 2 上，那么一切都很好:)