1. Prerequisites

Before setting up Fastlane, ensure you have:

• A macOS machine with Xcode installed.
• A Flutter project set up for iOS (flutter create . if missing).
• An Apple Developer Account with App Store Connect access.
• A registered App ID and Provisioning Profile in Apple Developer Portal.
• CocoaPods installed (brew install cocoapods).
• Latest version of ruby (brew install ruby).

2. Installing Fastlane

1. Install Fastlane:

   brew install fastlane
   
   

2. Open the terminal and navigate to your Flutter project’s ios directory:

   cd ios
   
   

3. Initialise Fastlane:

   fastlane init
   
   

4. When prompted:

   • You will need to choose the type of functionality you want to choose.

     1. Automate screenshots
     2. Automate beta distribution to TestFlight
     3. Automate App Store distribution
     4. Manual setup
     
     

   • Choose option Automate beta distribution to TestFlight.

   • Add Apple Id Username.(Here you can use your email) and perform login.

   • Select the development team.

   • Add app identifier if not added on AppStore connect.

   • And Complete the process.

• This step creates these files in Fastlane Directory Appfile and Fastfile. And in iOS directory creates Gemfile and Gemfile.lock. Save this files to GitHub project repository.

3. Creating certificates.

• Here you will require a new GitHub private repository to store the apple id certificates.

• Now execute this command.

  fastlane match init
  
  

• When prompted:

  • Choose git to store certificates.
  • Add GitHub repository url.