title: Device list doesn't shows in Android Studio using Flutter
body: <p>I tried to develop app using Flutter(using Android studio IDE).Add flutter plugin &amp; flutter SDK in studio and  Everything is configured but emulator / real time device are not listed. Its shows error like "Unable to list devices: Unable to discover Android devices. Please run "flutter doctor" to diagnose potential issues"
  <a href="https://i.stack.imgur.com/UHdMy.png2." rel="noreferrer"><img src="https://i.stack.imgur.com/UHdMy.png2." alt="android studio with flutter"></a></p>
  
  <p>Ref link : <a href="https://flutter.io/setup-windows/#android-setup" rel="noreferrer">https://flutter.io/setup-windows/#android-setup</a></p>
  
  <p><a href="https://flutter.io/get-started/test-drive/#androidsstudio" rel="noreferrer">https://flutter.io/get-started/test-drive/#androidsstudio</a></p>