BPInfo

Budapest public transport info app based on public transport APIs.

Features

• real time public transport info
• push notifications
• current and planned traffic changes
• filter vehicle types
• small, optimized APK size (currently ~1.75 MB)

Project

This app is also a demo project to try new technologies, libraries, architectures.

Technologies and libraries used:

• Kotlin
• androidx.*
  • ConstraintLayout
  • LiveData, ViewModel
• Koin for dependency injection
• Firebase
  • Cloud Messaging
  • Crashlytics
  • Performance
• WorkManager
• ThreeTenABP
• LeakCanary
• Android App Bundle

Libraries intentionally not used:

• RxJava: would be overkill for such simple use cases
• GSON: the API responses require a lot of custom parsing and mapping that I decided to parse with custom code

Future plans:

• Kotlin coroutines
• Jetpack Navigation
• More tests