flutter：无法运行基本的 hello world 程序，因为“任务 ':app:packageDebug' 的执行失败”。 '

Question

我是 flutter 和 android 工作室的初学者，当我尝试运行一个非常基本的 hello world 程序时，我得到了这个：

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:packageDebug'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
   > java.io.FileNotFoundException: D:\flutter\newapp\build\app\intermediates\signing_config\debug\out\signing-config.json (Access is denied)

* 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 16s
[!] Gradle threw an error while downloading artifacts from the network. Retrying to download...
Running Gradle task 'assembleDebug'...

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:packageDebug'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
   > java.io.FileNotFoundException: D:\flutter\newapp\build\app\intermediates\signing_config\debug\out\signing-config.json (Access is denied)

* 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 2s
[!] Gradle threw an error while downloading artifacts from the network. Retrying to download...
Exception: Gradle task assembleDebug failed with exit code 1

我已经尝试flutter clean但这没有用。 我通过 android 工作室手动清除了缓存，但也没有用。 我终于重新启动了我的机器，但也没有用。

我没有运气和解决方案。 任何帮助，将不胜感激。

（运行 windows 10）

Answer 1

Go 到路由D:\flutter\newapp\build\app\intermediates\signing_config\debug\out\并删除文件signing-config.json然后再次运行。

Answer 2

我建议重新下载 flutter SDK，并使用 Microsoft VSC 代替 Android Studio。它的轻量级和剂量会给您的 PC 带来很大压力。

Answer 3

我有同样的错误，命令 flutter clean 工作。