安装完androidsdk和android studio后，打开控制台，出现错误
解决办法
找到自己安装android sdk的位置，然后安装上，并将下面的勾选上
再次运行 flutter doctor 不报错，出现以下画面
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 2.5.3, on Microsoft Windows [Version 10.0.18363.1916], locale en-US)
[√] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[√] Chrome - develop for the web
[√] Android Studio (version 4.1)
[√] VS Code
[√] VS Code, 64-bit edition (version 1.62.0)
[√] Connected device (2 available)• No issues found!
