Articles & Tutorials

In this article, Joe Birch takes a look at the new FingerPrint Dialog that Android P provides for us.

The Repository pattern gives software developers a mediation layer between the domain of the application and the raw data fetched from the data source. Roberto Orgiu shows how to implement it.

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ListAdapter is a new class bundled with the latest support library and simplifies the code required to work with RecyclerViews. The end result is less code for you to write and more recycler view animations happening for free.

Piotr Zawadzki started using Android Test Orchestrator to help with instrumentation tests. In this article, he explains what it actually is, what issues it solves and how to use it.

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Chris Guzman wanted to solve a problem he had of opening too many tabs in his browser on the phone. Here's how he built a useful utility app for Android.

The goal of this series of articles is to get you started with using ExoPlayer to build a simple video player app. In this second part, Nazmul Idris looks into ExoPlayer playlists, UI customization, and events.

"Future Android versions will also restrict apps that don’t target a recent API level and adversely impact performance or security." Mark Murphy digs a little deeper to find out what this might mean.

Do you declare all your Kotlin classes 'open' so you can use Mockito? Brais Gabín Moreira shows us a better way.

Mark Allison shows us how to programmatically create a color wheel that's commonly used in apps.

In this post Emma Suzuki will walk you through the process about testing your Android app using Cucumber.

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Libraries & Code

Write idiomatic API integration tests using Kotlin (Unit and Instrumentation)

A drop-in replacement for GLSurfaceView that can be used to record to an mp4 movie.

Powerful, elegant and flexible Kotlin test framework

Zeplin extension for exporting text styles for Android that works with custom fonts

This is the official KotlinConf App and contains the source code of the application. All pieces of the application are implemented in Kotlin. Backend, frontend and mobile apps are Kotlin applications. Yes, Kotlin is powering all parts of the story.

Android Library for Async Data Loading and Caching

News

Google has made the Activity Recognition Transition API available to all Android developers. This API helps determine when the user has started or ended an activity like walking or driving.

Videos & Podcasts

How do you set up ViewModel and LiveData to fetch from the internet? Lyla Fujiwara walks us through these architecture components, plus some tips and tricks on what to store in ViewModel vs onSaveInstanceState.

In this episode, the team dives into Flutter, one of the most requested topics with GDE Eugenio Marletti.

Huyen sits down with Kevin Most to talk about Kotlin's interoperability with Java and best practices to cleanly call Kotlin from Java and to cleanly call Java from Kotlin.