下载工件时出现 java.io.FileNotFoundException 以及 Gradle 错误

Question

我不太确定是签名配置的问题。json文件或gradle 问题或两者兼而有之。

我正在开发的测试应用程序一直运行良好，直到昨晚，当我尝试再次运行该应用程序时，它给出了错误

错误：

Launching lib\main.dart on RNE L21 in debug mode...
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: C:\Users\r\Desktop\exampleapp\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 27s
Running Gradle task 'assembleDebug'...
[!] Gradle threw an error while downloading artifacts from the network. Retrying to download...

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: C:\Users\r\Desktop\exampleapp\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 28s
[!] Gradle threw an error while downloading artifacts from the network. Retrying to download...
Exception: Gradle task assembleDebug failed with exit code 1

互联网连接稳定，从昨晚开始我没有更改应用程序中的任何内容，所以有人可以指出这可能是什么原因

Answer 1

制作 minSdkVersion 21 我希望这将是您在应用程序级别 build.gradel 文件中的问题的解决方案

 minSdkVersion 21