Apolline - Flutter

Air quality measures gathering multi-platform application.

Install

cd apolline-flutter
flutter pub get
dart scripts/configuration_generation.dart  # see backend endpoint configuration section below
flutter run

Build instructions

Backend endpoint configuration

Before running the application, you MUST generate endpoint configuration by running:

dart scripts/configuration_generation.dart

Then, you can set variables in the apolline-flutter/assets/config_dev.json file.

Production build

Android

CI build

On develop push, CI will build an APK and try to push it as beta release on the Play Store.

Before merging a branch on develop, make sure:

• release notes have been updated
• application version has been increased (minor/patch)

If you want to make a public release on Play Store, you must mark a previously-uploaded beta release as ready for production in the Play console (https://play.google.com/console).

Manual build

1. Create a keystore with an upload key (https://flutter.dev/docs/deployment/android#create-an-upload-keystore);
2. Move the keystore file as android/app/upload-keystore.jks;
3. Create android/key.properties file as such:

storeFile=upload-keystore.jks
storePassword=$KEYSTORE_STORE_PASSWORD
keyAlias=$KEYSTORE_KEY_ALIAS
keyPassword=$KEYSTORE_KEY_PASSWORD

4. Build the application with flutter build apk or flutter build appbundle.

Automated build

To make the CI build the application bundle and sign it, we need to upload it to GitHub as a secret.

1. Encode the store with base64: gpg -c --armor release.keystore;
2. Upload both release.keystore.asc and associated password as GitHub secrets;
3. Use them as such in your CI workflow:

# Create store file from secret
echo "${{ secrets.UPLOAD_KEYSTORE }}" > upload.keystore.asc

# Decode store with encode key (the one you prompted with gpg -c)
gpg -d --passphrase "${{ secrets.UPLOAD_KEYSTORE_PASSPHRASE }}" --batch upload.keystore.asc > app/upload-keystore.jks

A Medium article describing the procedure can be found here: https://stefma.medium.com/how-to-store-a-android-keystore-safely-on-github-actions-f0cef9413784

Supported sensors

• LOA sensor.

Screenshots

Student contributors

• BARRY Issagha
• GDISSA Ramy
• RADI Lina
• VIDOR Remi