Materialised

Hacker News meets Material Design.

In order to showcase some of the cool techniques detailed in Udacity's Material Design course, I've created a small app that lets you browse Hacker News.

Material effects include:

• Collapsing app bar with tabs, to switch between the top, new and best stories
• Seam-to-step transition when scrolling through the article list
• A floating action button

Coming soon:

• Fancy view animations for nice transitions!
• A comments page!

Some other attempted techniques on show here include:

• Hexagonal architecture, with the code split between mobile and core modules
• Feature-based unit testing - rather than using each class as a unit under test, we're writing tests for the core module's functionality between an input and an output. This means we're not gluing our tests directly to our implementation
• Exclusive use of Kotlin for the core module of the app
• Data pulled in from the Hacker News API using Firebase, detailed here https://github.com/HackerNews/API
• Replacing all Firebase callbacks with RxJava 2.1 Singles and Observables using a generic binding system
• An intention to achieve 100% test coverage of the core module
• A first draft of a pattern I like to call Android-as-a-factory
• An asynchronously-loading RecyclerView, which updates its views as their data is returned from Firebase
• A view model based ViewPager implementation which will hopefully use the new Android ViewModel architecture at some point