Flutter：任务'：app：packageDebug'的执行失败

Question

你好，我在用 flutter 编译时遇到了问题

我已经尝试使用 flutter run 进行调试——调试但没有成功我认为从 gradle 开始，但我不知道如何解决这个问题。

    Resolving dependencies...                                           
    3,5s

    FAILURE: Build failed with an exception.

    * What went wrong:
    Execution failed for task ':app:packageDebug'.
    > Failed to generate v1 signature

    * 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 4s
    Running Gradle task 'assembleDebug'...
    Running Gradle task 'assembleDebug'... Done                         
    5,2s
    Gradle task assembleDebug failed with exit code 1

当我运行颤振医生时：

Doctor summary (to see all details, run flutter doctor -v):
[?] Flutter (Channel master, v1.7.4-pre.27, on Microsoft Windows [version 
10.0.17763.503], locale fr-FR)

[?] Android toolchain - develop for Android devices (Android SDK version 
28.0.3)
[!] Visual Studio - develop for Windows (Visual Studio Community 2017 
15.9.12)
X Visual Studio is missing necessary components. Please re-run the Visual Studio installer for the "Desktop development with C++" workload, and include these components:
    MSBuild
    VC++ 2017 version 15.9 v14.16 latest v141 tools
    Windows 10 SDK (10.0.17763.0)
  [?] Android Studio (version 3.4)
  [?] VS Code (version 1.35.0)
  [?] Connected device (1 available)

  ! Doctor found issues in 1 category.

请帮助我感谢您的时间和关注。

Answer 1

运行flutter clean在终端并再次运行