Android Studio with Flutter no devices connected

Question

I've installed Android Studio with Flutter/Dart plugin on Windows 10.

• Android Studio 3.4.2
• Flutter Plugin 38.2
• Dart Plugin v183.6270

If I open a Flutter project in Android Studio, the device list always displays "loading", and I see my three devices:

• Android Accelerated x86 Oreo
• Nexus 4 API 28
• Nexus 6 API 28

I selected one device and it opens on the emulator, but when I start the project this error message is displayed:

No Connected Devices Found
No connected devices found; please connect a device, or see flutter.io/setup for getting started instructions.

When I run flutter devices, the device is listed as connected:

PS C:\users\vsysm03> flutter devices
1 connected device:

Android SDK built for x86 • emulator-5554 • android-x86 • Android 9 (API 28) (emulator)
PS C:\users\vsysm03>

[image]

What is going wrong?

Answer 1

Nothing is necessarily wrong. You merely have a decision at any time to develop your app on a real device, or, forgoing an actual device, to use an emulation of the desired device.

The "No connected devices found" alert is informing you that you have not connected a physical device.

The notice "1 connected device...emulator..." shows you have chosen to target Android 9 for this particular project. The "emulator-5554" is now emulating an actual device that your application runs in as you develop, as though you had connected an actual device via USB cable to your workstation/computer. Please see the Android Virtual Device Manager for more information. Look for this icon in Android Studio. It opens AVD manager for you: .

Of course, if you prefer to test your application on a live device, in real time, you only have the small duty to connect one. This is easily done having gone into settings to place your phone in Debug mode. Please be aware you may also need to choose Airplane mode if your phone is not responding to your application run/debug commands. When your phone is connected live, of course, the "No connected devices" notice no longer appears.