Android Studio:R.jar:进程无法访问该文件，因为它正被另一个进程使用 [英] Android Studio: R.jar: The process cannot access the file because it is being used by another process

问题描述

全新安装 Android Studio 3.6.3(便携式)后.当我尝试构建和运行我的项目时，我不断收到

After a new installation of Android Studio 3.6.3 (portable). When I try to build and run my project, I keep getting

app\build\intermediates\compile_and_runtime_not_namespaced_r_class_jar\debug\R.jar:该进程无法访问该文件，因为它正在被另一个使用过程.

app\build\intermediates\compile_and_runtime_not_namespaced_r_class_jar\debug\R.jar: The process cannot access the file because it is being used by another process.

不确定它想从我这里得到什么.我以管理员身份"运行 Android Studio，甚至关闭项目并重新打开它，第一次运行时，第二次出现错误.

Not sure what it wants from me. I run Android Studio "as administrator" and even closing the project and reopening it, the first time it runs, the second time I get the error.

我尝试使缓存无效并重新启动，我尝试删除 app/build 下的文件夹，但它似乎又回来了.我错过了什么?

I tried invalidate caches and restart, I tried deleting folders under app/build but it seems to come back. What am I missing?

谢谢

更新:

尝试清理项目时，我得到以下信息

When trying to clean the project, I get the following

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:clean'.
> Unable to delete directory 'C:\Users\name\Downloads\portable\android-studio\projects\appm\app\build'
    Failed to delete some children. This might happen because a process has files open or has its working directory set in the target directory.
    - C:\Users\name\Downloads\portable\android-studio\projects\appm\app\build\intermediates\compile_and_runtime_not_namespaced_r_class_jar\debug\R.jar
    - C:\Users\name\Downloads\portable\android-studio\projects\appm\app\build\intermediates\compile_and_runtime_not_namespaced_r_class_jar\debug
    - C:\Users\name\Downloads\portable\android-studio\projects\appm\app\build\intermediates\compile_and_runtime_not_namespaced_r_class_jar
    - C:\Users\name\Downloads\portable\android-studio\projects\appm\app\build\intermediates

如果我等了几分钟，例如更新这个问题所花费的时间，那么它又可以工作了...

If I wait for several minutes, for example, the time it took me to update this question, then it works again...

更新:更新到 Android Studio 4 也出现同样的问题.

update: Updated to Android Studio 4 and the same problem occurs.

推荐答案

尝试

taskkill /im java.exe /f 

在 cmd (Windows 10) 中

in cmd (windows 10)

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