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 (useless) 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, and should allow easier logging
• 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 the data is returned from Firebase
• A view model based ViewPager implementation which will hopefully use the new Android ViewModel architecture at some point. Although maybe not!