Local setup

It’s recommended that you test the build and deployment process locally before
migrating to a cloud-based system. You could also choose to perform continuous
delivery from a local machine.

Install fastlane gem install fastlane or brew install fastlane.
Visit the fastlane docs for more info.

Create an environment variable named FLUTTER_ROOT,
 and set it to the root directory of your Flutter SDK.
 (This is required for the scripts that deploy for iOS.)

Create your Flutter project, and when ready, make sure that your project builds via
    
      
 flutter build appbundle; and
      
 flutter build ipa.

Initialize the fastlane projects for each platform.
    
      
 In your [project]/android
 directory, run fastlane init.
      
 In your [project]/ios directory,
 run fastlane init.