A simple and incredibily lightweight currency converter. I created this app for private use but when it prevented me getting ripped off in Bali. I realised this can benefit many people. This app also includes a home-screen widget which displays the current currency rate of your choice, which updates every 3 hours.

Requirements

Minimum android SDK version 21, Android 5.0.0 (Lollipop) Permissions : Internet, Network State

Features

Simple convert as you type
155 different currencies to choose from (inc. Bitcoin)
Simple homescreen widget of your conversion pair choice

Architectural Pattern

MVVM - Model View Viewmodel SOLID coding

Jetpack

AndroidX

Unit tests

Respository Unit test (Networkings)
Repository Unit test (Storage)
Mainactivity viewmodel test
Widget configure viewmodel test

Integration tests

Test case one

MainActivity UI test

Built With

Kodein - Painless Kotlin Dependency Injection
Retrofit - Type-safe HTTP client for Android and Java by Square, Inc
Mokito - Most popular Mocking framework for unit tests written in Java
Mokito-kotlin - Using Mockito with Kotlin

Submitted by

Haider Malik - Android Developer