Answer by Jacob Nelson for Create a new app for either iOS or Android using Flutter

The question is for creating a new project either for Android or iOS. Not for building.Please follow the steps given in this tutorial Get Started.

In a nutshell

1. Get the Flutter SDK Update your path with flutter SDK
2. Run flutter doctor to make sure, flutter is installed correctly
3. Install the Flutter and Dart plugins for Android Studio
4. Create new flutter app by following this tutorial

Hope this helps