mobile-cicd

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---
name: mobile-cicd
description: >-
  Fastlane, GitHub Actions for mobile, code signing (iOS provisioning, Android keystores), beta distribution (TestFlight, Firebase App Distribution), and app store submissions. Use when setting up mobile build pipelines, automating releases, or managing signing.
---

# Mobile CI/CD Skill

Automated build, test, sign, and deploy pipelines for iOS and Android apps.

---

## Fastlane

### iOS Fastfile

```ruby
# ios/fastlane/Fastfile
default_platform(:ios)

platform :ios do
  desc "Run tests"
  lane :test do
    run_tests(scheme: "MyApp")
  end

  desc "Build and upload to TestFlight"
  lane :beta do
    increment_build_number(xcodeproj: "MyApp.xcodeproj")
    match(type: "appstore", readonly: true)
    build_app(scheme: "MyApp", export_method: "app-store")
    upload_to_testflight(skip_waiting_for_build_processing: true)
    slack(message: "New iOS beta uploaded to TestFlight")
  end

  desc "Deploy to App Store"
  lane :release do
    match(type: "appstore", readonly: true)
    build_app(scheme: "MyApp", export_method: "app-store")
    upload_to_app_store(
      submit_for_review: true,
      automatic_release: false,
      force: true
    )
  end
end
```

### Android Fastfile

```ruby
# android/fastlane/Fastfile
default_platform(:android)

platform :android do
  desc "Run tests"
  lane :test do
    gradle(task: "test")
  end

  desc "Build and upload to Play Store internal track"
  lane :beta do
    gradle(task: "bundleRelease")
    upload_to_play_store(
      track: "internal",
      aab: "app/build/outputs/bundle/release/app-release.aab"
    )
  end

  desc "Promote to production"
  lane :release do
    upload_to_play_store(
      track: "internal",
      track_promote_to: "production",
      rollout: "0.1" # 10% rollout
    )
  end
end
```

---

## Code Signing

### iOS (match)

```ruby
# Matchfile
git_url("https://github.com/org/certificates.git")
storage_mode("git")
type("appstore")
app_identifier("com.example.myapp")

# Usage
match(type: "development")  # Dev certificates
match(type: "appstore")     # Distribution certificates
```

### Android (Keystore)

```bash
# Generate keystore (once)
keytool -genkey -v -keystore release.keystore \
  -alias my-key-alias -keyalg RSA -keysize 2048 -validity 10000

# Store securely - NEVER commit to git
# Use CI secrets or encrypted storage
```

```groovy
// android/app/build.gradle
android {
    signingConfigs {
        release {
            storeFile file(System.getenv("KEYSTORE_PATH") ?: "release.keystore")
            storePassword System.getenv("KEYSTORE_PASSWORD")
            keyAlias System.getenv("KEY_ALIAS")
            keyPassword System.getenv("KEY_PASSWORD")
        }
    }
}
```

---

## GitHub Actions

### React Native / Expo

```yaml
# .github/workflows/mobile-ci.yml
name: Mobile CI/CD
on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with: { node-version: '20' }
      - run: npm ci
      - run: npm test
      - run: npx tsc --noEmit

  build-ios:
    needs: test
    runs-on: macos-latest
    if: github.ref == 'refs/heads/main'
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with: { node-version: '20' }
      - uses: ruby/setup-ruby@v1
        with: { ruby-version: '3.2' }
      - run: npm ci
      - run: cd ios && bundle install && bundle exec fastlane beta
        env:
          MATCH_PASSWORD: ${{ secrets.MATCH_PASSWORD }}
          FASTLANE_APPLE_APPLICATION_SPECIFIC_PASSWORD: ${{ secrets.APPLE_APP_PASSWORD }}

  build-android:
    needs: test
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-java@v4
        with: { java-version: '17', distribution: 'temurin' }
      - uses: actions/setup-node@v4
        with: { node-version: '20' }
      - run: npm ci