WeatherApp

WeatherApp 1.0 Release Notes 18/01/21

• Initial WeatherApp release

Important!

To build the app you will need to add an openweathermap.org API key to your gradle.properties file which is outside of the project (e.g. /Users/[user_dir]/.gradle/gradle.properties) on mac. Add a line to the gradle.properties as follows:

weather_api_key = "[your openweathermap api key]"

Assumptions

• Main weather only - screenshot doesn’t show description.
• UI - Colours, fonts sizes, margins/padding etc.
• Layout behaviours - e.g. how does current condition icon behave with long current condition text (wrap/truncate etc).
• 8 Point Compass - based on screen shot example.
• Round temp and wind speed to nearest whole number.
• Age of data is based on timestamp from api call not actual time of api call.
• If data can’t be synced for any reason use latest as per (<24) rules (not just for no internet) and show general error.

Technical Decisions

Architecture:

Moved from Kotlin Android Extensions (Synthetics) to Jetpack View Binding as Kotlin Android Extensions is deprecated!

MVVM/MVI Architecture

• Enough to demonstrate a production quality app focusing on stability, extendability and testability.

Libs & tech:

• DI -> Koin
• DB -> Realm
• Coroutines
• LiveData
• Navigation Framework
• Retrofit
• Glide
• LocationManager
• Dexter permissions library

Trade-Offs

• No feature files as only one feature; in a real production app business logic would be moved into features
• No separate repository data sources; in a real production app repository would be setup with separate data sources
• Only unit tested extension functions & happy paths for both ViewModel & Repository but this covers most business logic

Improvements

• Unhappy paths for GPS, location services more elaborate
• More testing; better unit test coverage as well as android/UI tests