让$JAVA_HOME指向与Android Studio相同的JDK版本。

所有荣誉都要归功于Vairavan Srinivasan

在@Sean Stayns的回答中引用了一个场景，以防它能帮助到任何人:如果你把你的项目保存在谷歌Drive文件夹中——不要这样做。只需将项目移动到本地驱动器即可解决此问题。

In the case we were trying to solve, were were also getting the "It is currently in use by another Gradle instance" error and nothing we tried here worked. The process ID was unknown as well. It didn't immediately occur to me to ask where the project was being saved, so in case anyone new to Android Dev is saving their projects to a Google Drive folder, just move over to your local drive. I would have just left this as a comment in @Sean Stayns's answer, but I can't comment. Hopefully it benefits someone.

通过执行如下命令删除gradle缓存中的锁文件:

find ~/.gradle -type f -name "*.lock" -delete

只要删除你的。gradle文件夹在android文件夹

如果在您的文件资源管理器(WINDOWS)或查找器(MAC)中不可用

Windows操作系统: 转到查看选项并检查显示隐藏文件

对于Mac

只需按CMD + shift +。

现在运行你的应用程序。

有时，您需要在每次构建错误后运行此代码几次

对我来说，它需要两次，首先我得到锁定错误，我运行这段代码，然后我再次得到另一个文件的锁定错误，所以我再次运行代码，在结束时它正常工作。

find ~/.gradle -type f -name "*.lock" -delete

我在我的项目中也面临着同样的问题，但我通过使项目无效来解决这个问题，所以在android studio中遵循以下步骤

File -> Invalidate cache / Restart…

Android工作室将重新启动，您的问题应该得到解决。