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在Android Studio中构建文件时出现Flutter错误
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Stack Overflow用户
提问于 2020-05-08 00:42:07
回答 2查看 1.6K关注 0票数 2

我在Android Studio上新安装了Flutter。我有一个颤动的源代码,我想用它打开它。我安装了最新的flutter插件和flutter SDK。但当我尝试运行该应用程序时,它显示了以下错误:

代码语言:javascript
复制
Compiler message:
/C:/Flutter%20SDK/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.14.4/lib/src/picture_stream.dart:92:3: Error: The superclass, 'Diagnosticable', has no unnamed constructor that takes no arguments.
  PictureStream();
  ^^^^^^^^^^^^^
/C:/Flutter%20SDK/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.14.4/lib/src/picture_stream.dart:192:16: Error: The superclass, 'Diagnosticable', has no unnamed constructor that takes no arguments.
abstract class PictureStreamCompleter extends Diagnosticable {
               ^

Compiler message:
/C:/Flutter%20SDK/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.14.4/lib/src/picture_stream.dart:92:3: Error: The superclass, 'Diagnosticable', has no unnamed constructor that takes no arguments.
  PictureStream();
  ^^^^^^^^^^^^^
/C:/Flutter%20SDK/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.14.4/lib/src/picture_stream.dart:192:16: Error: The superclass, 'Diagnosticable', has no unnamed constructor that takes no arguments.
abstract class PictureStreamCompleter extends Diagnosticable {
               ^
Target kernel_snapshot failed: Exception: Errors during snapshot creation: null
build failed.

FAILURE: Build failed with an exception.

* Where:
Script 'C:\Flutter SDK\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 882

* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\Flutter SDK\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 23s
Exception: Gradle task assembleDebug failed with exit code 1

我对此完全是个新手,不知道这个错误指向何处。我有最新的Flutter SDK版本: Flutter 1.17.0和Dart 2.8.1,它是一个稳定的版本。我的Android Studio版本是3.6.2

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回答 2

Stack Overflow用户

发布于 2020-05-08 01:29:38

尝试在您的终端中执行以下命令:

flutter pub cache repair

如果不起作用,删除flutter文件夹和缓存文件夹就可以了。

票数 2
EN

Stack Overflow用户

发布于 2020-05-26 02:43:39

在我的例子中,我解决了这个问题,将最新版本的flutter svg添加到pubspec.yaml中

检查链接以安装最新版本:https://pub.dev/packages/flutter_svg#-installing-tab-

票数 0
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页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://stackoverflow.com/questions/61663167

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