Skip to content

Android

Configuration⚑

build.gradle⚑

Automatic version code generation from version name⚑

If you use semantic versioning and you don't want to increment the version code manually, replace the related config from android/app/build.gradle with:

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0.0'
}

def semanticVersion = flutterVersionName.split('\\+')
def versionCore = semanticVersion[0]
def build = semanticVersion.length >= 2 ? semanticVersion[1].toInteger() : 0
def (major, minor, patch) = versionCore.tokenize('.').collect{it.toInteger()}
def flutterVersionCode = 1000000 * major + 10000 * minor + 100 * patch + build

Then whenever pubspec.yaml version veriable changes and you build an APK or appbundle, the version code will be generated from it.

Examples (version name -> version code):

  • 1.2.0 -> 1020000
  • 3.0.1+99 -> 3000199

Signing the APK/AppBundle⚑

First of all, create a key if you don't have one with:

keytool -genkey -v -keystore {{ keystore_file }} -alias {{ key_alias }} \
  -keyalg RSA -keysize 4096 -validity 10000

Replace signingConfigs with:

  signingConfigs {
       release {
        keyAlias "$System.env.KEY_ALIAS"
        keyPassword "$System.env.KEY_PASSWORD"
        storeFile file("$System.env.KEY_PATH")
        storePassword "$System.env.STORE_PASSWORD"
    }
   }
   buildTypes {
       release {
           signingConfig signingConfigs.release
       }
   }

Now, you can set the corresponding environment variables. This configuration is particularily useful if you want to have a CI build and sign the releases.

Check store file as secret to save the generated keystore file as a CI secret.

Continuous Integration (CI)⚑

GitHub Actions⚑

Upload to Play Store⚑

  1. Create a principal in https://console.cloud.google.com/iam-admin/iam with the role Service Account User.
  2. Create and download a new key (JSON format) for the created principal.
  3. In Play Console go to Setup>API access and enable access for the created principal granting Admin (all permissions) to it.
  4. Add the key JSON content as a GitHub Secret (e.g., SERVICE_ACCOUNT_JSON).
  5. Add the following step to your workflow (after flutter build appbundle):
- name: Upload to Google Play
  uses: r0adkll/upload-google-play@v1.0.15
  with:
    serviceAccountJsonPlainText: ${{ secrets.SERVICE_ACCOUNT_JSON }}
    packageName: {{ package_name }}
    releaseFiles: build/app/outputs/bundle/release/app-release.aab
    track: production