AmberChargeTracker

Jetpack Compose Android App to record Electric car journeys and charging stats

It's been a while since I tried Android development.

Task list

Bugs

• Really getting confused about ViewModels, init {} blocks, LaunchedEffects... I'm not getting the data I expect when I expect it
• Ability to abort a charge event
• Prevent editing of starting values on active charge event
• Fix main menu still showing charge event after it's finished
• Correctly handle startup if vehicles exist but SharedPreferences does not - or maybe store selected vehicle etc in DB instead?
• Saving total cost of a charge event
  • There's no currency support, assumes UK£ only
• Text styling on real device - black on black is hard to read...
• Very inconsistent behaviour moving between screens when charging

Technical improvements

• Set up database migrations so that I can avoid wiping the DB
• field validation - really required for currency and percentages
  • this did not go well when I tried to do it at the composable text input level, so probably needs to happen at the viewmodel - which would mean hoisting the fields into the VM?
• cross-field validation at viewmodel level?
• Charging screen improvements
  • Should persist across process death
  • Check if charge is in progress on startup
  • Restore the timer correctly based on the charge start time
  • Handle back navigation when charge event is saved (e.g from history screen)
• Use Scaffold for layout

Features

• Add better navigation - might come with Scaffold?
• Enable switching between different vehicles - could be useful to keep dev separate from real, now that the app works in a basic way
• cross-field validation at ViewModel level?
• Charging screen improvements
  • Should persist across process death
  • Check if charge is in progress on startup
  • [-] Restore the timer correctly based on the charge start time
• charge history table improvements
• charge history graphs
• Journey recording screens and model
• Android Auto integration
• Add a photograph of the cars for easy identification
• Edit car details
• Delete vehicle and all associated events, images etc
• A decent icon