问题
I'm developing flutter project and I'm a newbie to flutter, My Avd manager shows only virtual device except real, whereas my another android project shows my real device and my Android WIFI ADB Here is Image is also showing a connected device, but flutter device selection showing nothing, What should I do? I'm following these steps but nothing is happening. I'm opening Emulator from AVD manager but whenever I run the project it does not show any device, Here is another image.
When I choose MainActivity to run than Android Studio shows device but it shows error like
Cannot start compilation: the output path is not specified for module "flutter_app1_android". Specify the output path in Configure Project.
I solved the problem then another problem occur
Unable to determine application id: com.android.tools.idea.run.ApkProvisionException: ERROR: APK path is not specified for module "flutter_app2_android" Client not ready yet.
I searched it for this problem but unable to set path because of Project Structure Does not show Module tool, It is showing only SDK Location and project, Here is the image
回答1:
Yes, I found the solution, It was showing no device because of my flutter SDK was not installed properly. I uninstalled the Flutter Sdk. And follow other processes to install the Flutter
1) Go to the Git Bash and run the Command
git clone -b beta https://github.com/flutter/flutter.git
it will download SDK at default place.
2) Now run the Command
flutter doctor
whenever you run the command it will show some error it may be SDK location not found and device not found.
set The Home Variable,
1) Go to Control Panel
2) Go to User Account
3)Change My Environment Variable (If your SDK is somewhere else then set Location like)
and restart your system to make changes and again run the command
flutter doctor
your project will show device and emulator which you are using.
来源：https://stackoverflow.com/questions/49082240/flutter-no-connected-devices