running android studio emulator without opening android studio code example

Example 1: Run emulator without Android studio.

emulator -list-avds
emulator -avd Nexus_5X_API_26(emulator name)

Example 2: android studio test dart code

// Online:
https://dartpad.dartlang.org/?null_safety=true
// In Android Studio:
In the files listbox (toolbar, name of file, 'main.dart' for ex), select:
	> Edit configurations...
    > +
    > Dart Command Line App
Add your Dart file (my_project/lib), run.