Android Studio device list shows "loading" and no devices connected

[masem1899]

0

I've installed Android Studio with Flutter/Dart plugin on Win10. 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", in the device list i see my three devices:

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

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

What is going wrong?

[stevemessick]

Do you still see this problem after updating everything to latest (AS, plugin, SDK)?

[tahmid-shahriar]

having the same problem with latest AS & Plugins

[no-response]

Without additional information we're unfortunately not sure how to resolve this issue. We're going to close this bug for now, but please don't hesitate to comment on the bug if you have any more information for us; we're happy to reopen. Thanks for your contribution!

[devoncarew]

We'll investigate and see if we can repro/

[incognitojam]

I'm also having the same issue.

Output from flutter doctor -v:

$ flutter doctor -v
[√] Flutter (Channel beta, v1.9.1+hotfix.3, on Microsoft Windows [Version 10.0.18990.1], locale en-GB)
• Flutter version 1.9.1+hotfix.3 at C:\src\flutter
• Framework revision a72edc2706 (23 hours ago), 2019-09-25 15:41:01 -0700
• Engine revision b863200c37
• Dart version 2.5.0

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
• Android SDK at C:\Users\camer\Android
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-29, build-tools 29.0.2
• ANDROID_HOME = C:\Users\camer\Android
• Java binary at: C:\Users\camer\AppData\Local\JetBrains\Toolbox\apps\AndroidStudio\ch-0\191.5791312\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
• All Android licenses accepted.

[√] Android Studio (version 3.5)
• Android Studio at C:\Users\camer\AppData\Local\JetBrains\Toolbox\apps\AndroidStudio\ch-0\191.5791312
• Flutter plugin version 39.0.3
• Dart plugin version 191.8423
• Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)

[√] VS Code (version 1.38.1)
• VS Code at C:\Users\camer\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.4.1

[!] Connected device
! No devices available

! Doctor found issues in 1 category.

In this case I had no devices attached, but Android Studio shows "Loading..." in the devices dropdown for the flutter plugin. I get the same behaviour with a Pixel 2 XL attached. Running flutter run works as expected.

EDIT: I tested installing IntelliJ IDEA and also had the same problem.

New flutter doctor -v output:

[√] Flutter (Channel beta, v1.9.1+hotfix.3, on Microsoft Windows [Version 10.0.18990.1], locale en-GB)
    • Flutter version 1.9.1+hotfix.3 at C:\src\flutter
    • Framework revision a72edc2706 (2 days ago), 2019-09-25 15:41:01 -0700
    • Engine revision b863200c37
    • Dart version 2.5.0

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
    • Android SDK at C:\Users\camer\Android
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-29, build-tools 29.0.2
    • ANDROID_HOME = C:\Users\camer\Android
    • Java binary at: C:\Users\camer\AppData\Local\JetBrains\Toolbox\apps\AndroidStudio\ch-0\191.5791312\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
    • All Android licenses accepted.

[√] Android Studio (version 3.5)
    • Android Studio at C:\Users\camer\AppData\Local\JetBrains\Toolbox\apps\AndroidStudio\ch-0\191.5791312
    • Flutter plugin version 39.0.3
    • Dart plugin version 191.8423
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)

[√] IntelliJ IDEA Ultimate Edition (version 2019.2)
    • IntelliJ at C:\Users\camer\AppData\Local\JetBrains\Toolbox\apps\IDEA-U\ch-0\192.6817.14
    • Flutter plugin version 39.0.5
    • Dart plugin version 192.6817.14

[√] VS Code (version 1.38.1)
    • VS Code at C:\Users\camer\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.4.1

[√] Connected device (1 available)
    • Pixel 2 XL • 711KPMZ0833835 • android-arm64 • Android 10 (API 29)

• No issues found!

and flutter devices:

1 connected device:

Pixel 2 XL • 711KPMZ0833835 • android-arm64 • Android 10 (API 29)

[stevemessick]

I have not been able to duplicate this problem on either Mac or Windows. However, I think #4014 will fix it. Hopefully, we will get that PR into the M41 release.