我使用的是vscode，我安装了Flutter 翼插件、DART插件等，但是我仍然找不到我的设备，因为我发现问题如下
[flutter] flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.7.8+hotfix.3, on Microsoft Windows
[Version 10.0.18362.239], locale en-IN)
[X] Android toolchain - develop for Android devices
X Unable to locate Android SDK.
Install Android Studio from:
https://developer.android.com/studio/index.html
On first launch it will assist you in installing the Android SDK components.
(or visit https://flutter.dev/setup/#android-setup for detailed instructions).
If the Android SDK has been installed to a custom location, set ANDROID_HOME to that location.
You may also want to add it to your PATH environment variable.
[!] Android Studio (not installed)
[√] VS Code (version 1.36.1)
[!] Connected device
! No devices available
! Doctor found issues in 3 categories.