Android是一个软件堆栈,但不是操作系统.正如developer.android.com所述
什么是Android？Android是移动设备的软件堆栈,包括操作系统,中间件和关键应用程序.Android SDK提供了使用Java编程语言开始在Android平台上开发应用程序所需的工具和API.
我不明白软件堆栈是OS与应用程序一起工作,因此Windows是一个操作系统,但如果我在其上安装应用程序,我应该将其称为软件堆栈吗？
那么软件堆栈和操作系统有什么区别,Android包含内核,为什么不是它的操作系统呢？
在 Visual Studio Code v1.46.1 中运行应用程序时出现主要错误
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:cleanMergeDebugAssets'.
> Unable to delete directory 'E:\ACNO\Flutter\jots_mobile\build\app\intermediates\merged_assets\debug\out'
Failed to delete some children. This might happen because a process has files open or has its working directory set in the target directory.
- E:\ACNO\Flutter\jots_mobile\build\app\intermediates\merged_assets\debug\out\flutter_assets\assets
- E:\ACNO\Flutter\jots_mobile\build\app\intermediates\merged_assets\debug\out\flutter_assets\packages\cupertino_icons
- E:\ACNO\Flutter\jots_mobile\build\app\intermediates\merged_assets\debug\out\flutter_assets\packages
- E:\ACNO\Flutter\jots_mobile\build\app\intermediates\merged_assets\debug\out\flutter_assets
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log …