Repository for the Android course's project (A.Y. 2020-2021).
This project implements an Android application for consulting and reporting weather information about a location.
The application is entirely distributed and no servers are present.
For online services, the application uses third parties services (e.g., Google Firebase).
Important for the build: you have to replace the file google-services.json with your own file taken from Google Firebase Console, otherwise you will have troubles with your build.
Users who want to use the application must authenticate. The authentication process is demanded to Firebase Authentication.
The application uses Firebase Realtime Database for online storage.
Firebase automatically handles the local storage, too, e.g., in case of temporary network interruptions.
The provider for weather information is OpenWeather.
You must require an API key to use OpenWeather's services and put it into the file app/src/main/res/raw/openweathermap_apikey.txt (in the raw resources).
OpenStreetMap is used as geographic database, for showing locations on a map.
Firebase local emulators are used for developing purposes. The following emulators are used:
- Database Emulator
- Authentication Emulator
Data created when using the emulators are not persistent and will not be propagated to the (real) online services. If you need those data, you have to export them.
The command firebase init is used to initialize them for the project and associate them to your
online (real) Firebase project. The configuration will be saved in the file firebase.json.
The command firebase emulators:start is used to start the emulators on your computer.
This emulator is for the Firebase Realtime Database.
The file database.rules.json defines the Firebase Realtime Database Security Rules for your local emulator: those rules allow you to define how your data should be structured and when your data can be read from and written to.
This emulator is for the authentication service.