Emulator not detected in VSCode using Flutter

Issue

I am trying to use an emulator and when I launch it, it starts loading but its not getting conneccted in VSCode. How can I connect so that VSCode detects it?

When I start the adb-server, I get the following output

adb server version (40) doesn't match this client (39); killing...
ADB server didn't ACK
Full server startup log: /tmp/adb.1000.log
Server had pid: 31775
--- adb starting (pid 31775) ---
adb I 11-22 22:58:24 31775 31775 main.cpp:57] Android Debug Bridge version 1.0.39
adb I 11-22 22:58:24 31775 31775 main.cpp:57] Version 1:8.1.0+r23-5~18.04
adb I 11-22 22:58:24 31775 31775 main.cpp:57] Installed as /usr/lib/android-sdk/platform-tools/adb
adb I 11-22 22:58:24 31775 31775 main.cpp:57] 
adb I 11-22 22:58:24 31775 31775 adb_auth_host.cpp:416] adb_auth_init...
adb I 11-22 22:58:24 31775 31775 adb_auth_host.cpp:174] read_key_file '/home/sahil/.android/adbkey'...
adb I 11-22 22:58:24 31775 31775 adb_auth_host.cpp:391] adb_auth_inotify_init...
adb server killed by remote request

* failed to start daemon
error: cannot connect to daemon

flutter doctor logs:

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.9.1+hotfix.4, on Linux, locale en_GB.UTF-8)

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[!] Android Studio (version 3.2)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
[!] IntelliJ IDEA Ultimate Edition (version 2019.2)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
[✓] VS Code (version 1.35.1)
[!] Connected device

! Doctor found issues in 3 categories.

flutter devices logs:

No devices detected.

Run 'flutter emulators' to list and start any available device emulators.

Or, if you expected your device to be detected, please run "flutter doctor" to
diagnose potential issues, or visit https://flutter.dev/setup/ for troubleshooting
tips.

• Device emulator-5554 is offline.

Solution

The device does not have permissions. Run flutter doctor and flutter devices, if no devices appear to be connected (in this case, emulated) you need to kill the adb-server, open the emulator and then start the adb-server.

If the issue still persists after this, try flutter doctor --android licenses

And if it still continues, please post your flutter doctor & flutter devices output.

Regards

Answered By - Jose Barranco