扑医生--android-licenses不起作用

Question

当我运行flutter doctor时，我发现许可证状态未知。

[√] Flutter (Channel stable, v1.0.0, on Microsoft Windows [Version 10.0.17763.253], locale en-US)
[!] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    X Android license status unknown.
[√] Android Studio (version 3.3)
[√] IntelliJ IDEA Ultimate Edition (version 2018.3)
[!] VS Code (version 1.30.2)
[!] Connected device
    ! No devices available

! Doctor found issues in 3 categories.

我发现，为了解析许可证，我需要运行此命令flutter doctor --android-licenses。当我运行时，出现以下错误：

The system cannot find the path specified.
The system cannot find the path specified.
The system cannot find the path specified.
A newer version of the Android SDK is required. To update, run:
C:\Users\myusername\AppData\Local\Android\sdk\tools\bin\sdkmanager --update

因此，我然后尝试运行C:\Users\myusername\AppData\Local\Android\sdk\tools\bin\sdkmanager --update时收到以下错误：

'E\AppData\Local\Android\Sdk\tools\bin\' is not recognized as an internal or external command,
operable program or batch file.
Error: Could not find or load main class com.android.sdklib.tool.sdkmanager.SdkManagerCli

我在网上四处张望，找不到任何答案。我是新手，不知道如何解决此问题。任何帮助将非常感谢！

Answer 1

在 Android Studio 中，您应该检查以确保安装了 Android SDK 命令行工具。添加这个为我在 Flutter 中解决了这个问题。

Answer 2

打开命令提示符并访问Android SDK目录，然后执行以上命令。

sdkmanager --update