Cannot run Flutter App on Android Emulator

Question

I'm using Android Studio to create Flutter application. It works perfectly on iOS simulators, however, I cannot run it on Android emulators.

As you can see in the screenshot, I can see my iPhone 8 simulator but I cannot see Android emulator, although I'm running "Pixel 2" emulator.

You can see my virtual devices in the screenshot below.

Update 1:

This is the output of flutter doctor:

[✓] Flutter (Channel beta, v0.3.2, on Mac OS X 10.13.4 17E202, locale en-KW)
[✓] Android toolchain - develop for Android devices (Android SDK 26.0.2)
[✓] iOS toolchain - develop for iOS devices (Xcode 9.3)
[✓] Android Studio (version 3.1)
[✓] VS Code (version 1.23.1)
[✓] Connected devices (1 available)

• No issues found!

Answer 1

Short answer

Probably the Project SDK is not set. Set it from Android Studio;

• File -> Project Structure -> Project Settings -> Project

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Longer answer

I had the same issue;

• flutter doctor command says everything is OK
• AVDs are created with Android Studio's AVD Manager
• Android Studio shows no devices to run app on

I realized that Flutter's doctor can be also run from Android Studio (Tools -> Flutter -> Flutter Doctor) and it had a problem with Android toolchain; said that SDK is not set. I am not sure how this doctor has different output from flutter doctor run from the project's directory, but it was the correct one. I just went to File -> Project Structure and under Project Settings -> Project selected the appropriate Project SDK - Android API xx Platform (was <No-SDK>).