Agent skill
using-fastlane-in-flutter-and-ci
Automate Flutter app builds and deployments to both the App Store and Google Play using Fastlane with this step-by-step guide.
Install this agent skill to your Project
npx add-skill https://github.com/rodydavis/skills/tree/main/skills/fastlane-and-flutter
Metadata
Additional technical details for this skill
- last modified
- Tue, 03 Feb 2026 20:04:17 GMT
SKILL.md
Using Fastlane in Flutter and CI
Prerequisites:
-
Understand what Fastlane is and how it works
-
Project builds correctly following these docs
-
Android app setup in Google Play Console
-
iOS app setup in AppStore Connect
-
Flutter is installed and your project is created
Steps
-
Open your Flutter project
-
Run: cd ios
-
Run: fastlane init and follow the prompts
-
Replace the Fastfile contents with this:
#!/bin/bash
echo "App Release Automator by @rodydavis"
action="$1"
red=`tput setaf 1`
green=`tput setaf 2`
reset=`tput sgr0`
if [ ${action} = "build" ]; then
echo "${green}Generating built files.. ${reset}"
flutter packages pub run build_runner clean
flutter packages pub run build_runner build --delete-conflicting-outputs
pub global activate pubspec_version
git commit -a -m "Build $(pubver bump patch)"
echo "${green}Building Project...${reset}"
find . -name "*-e" -type f -delete
flutter format .
flutter clean
echo "${green}Project Size: $(find . -name "*.dart" | xargs cat | wc -c)${reset}"
echo "${green}Building APK...${reset}"
flutter build apk
echo "${green}Builing IPA..${reset}"
cd ./ios && pod install && pod repo update && cd ..
flutter build ios
git commit -a -m "Project Rebuilt"
elif [ ${action} = "beta" ]; then
echo "${green}Generating built files..${reset}"
flutter packages pub run build_runner clean
flutter packages pub run build_runner build --delete-conflicting-outputs
pub global activate pubspec_version
git commit -a -m "Beta $(pubver bump patch)"
echo "${green}Building Project...${reset}"
find . -name "*-e" -type f -delete
flutter format .
flutter clean
echo "${green}Project Size: $(find . -name "*.dart" | xargs cat | wc -c)${reset}"
echo "${green}Building APK...${reset}"
flutter build apk
echo "${green}Sending Android to Beta...${reset}"
cd ./android && fastlane beta && cd ..
echo "${green}Builing IPA..${reset}"
flutter build ios
echo "${green}Sending iOS to Beta..${reset}"
cd ./ios && fastlane beta && cd ..
git commit -a -m "Sent to Beta"
elif [ ${action} = "release" ]; then
echo "${green}Generating built files..${reset}"
flutter packages pub run build_runner clean
flutter packages pub run build_runner build --delete-conflicting-outputs
pub global activate pubspec_version
git commit -a -m "Production $(pubver bump minor)"
echo "${green}Building Project...${reset}"
find . -name "*-e" -type f -delete
flutter format .
flutter clean
echo "${green}Project Size: $(find . -name "*.dart" | xargs cat | wc -c)${reset}"
echo "${green}Building APK...${reset}"
flutter build apk
echo "${green}Sending Android to Production...${reset}"
cd ./android && fastlane release && cd ..
echo "${green}Builing IPA..${reset}"
flutter build ios
echo "${green}Sending iOS to Production...${reset}"
cd ./ios && fastlane release && cd ..
git commit -a -m "Sent to Production"
fi
echo "${green}Successfully completed${reset}"
-
Run: cd .. && cd android
-
Run: fastlane init and follow the prompts
-
Replace the Fastfile contents with this:
# Uncomment the line if you want fastlane to automatically update itself
# update_fastlane
default_platform(:android)
platform :android do
desc "Prepare and archive app"
lane :prepare do |options|
#bundle_install
Dir.chdir "../.." do
sh("flutter", "packages", "get")
sh("flutter", "clean")
sh("flutter", "build", "appbundle", "--release")
end
end
desc "Push a new beta build to Google Play"
lane :beta do
prepare(release: false)
upload_to_play_store(
track: 'beta',
aab: "../build/app/outputs/bundle/release/app.aab"
)
add_git_tag(
grouping: "fastlane-builds",
prefix: "v",
build_number: android_get_version_code
)
push_to_git_remote
end
desc "Push a new release build to the Google Play"
lane :release do
prepare(release: true)
upload_to_play_store(
track: 'production',
aab: "../build/app/outputs/bundle/release/app.aab"
)
add_git_tag(
grouping: "release",
prefix: "v",
build_number: android_get_version_name
)
push_to_git_remote
end
end
-
Run: fastlane add_plugin versioning_android and enter your password if needed
-
Run: cd ..
Now you are ready to launch your app to beta!
For ios run: cd ios && fastlane beta
For android run: cd android && fastlane beta
Stay tuned for an article soon where we use these fastlane sub folders for automating the releases on Github Actions CI
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