Articles & Tutorials

Kotlin 1.2.21 allows Kotlin projects to make use of build caching. Roman Belov introduces how to make use of this new feature.

Kotlin on Android is the future while Java is the past. Juhani Lehtimäki explains why.

Localization boosts registrations, app usage, and revenue. Dmytro Khmelenko explains how he keeps his development speed and manage to ship fully localized new features often.

In this short series, Mark Allison takes a look at the right way to modify the contents of a RecyclerView.Adapter in order to get add/remove animations for free.

Sebastiano Poggi shows how to make sure you never, ever commit code that has not been properly formatted, using an extremely powerful feature of Git, some Gradle hacks, and a simple script.

Mohamed Ibrahim shares this quick walkthrough of the Android Architecture components and how you can benefit from them.

Joe Birch looked through the documentation for KTX and thought he’d write some notes on it as an overview.

Daniel Novak thinks it's time to ditch Loaders and switch to ViewModel, LiveData & Room from the Architecture components. What do you think?

Max Wiechmann shares an example of an elegant way to instantiate Kotlin data classes from JSON with default values and null safety.

Eric Decanini shows how Cloud Firestore’s security rules are more flexible and easier to write than those of the Realtime Database.

In Kotlin multiplatform project you probably have business logic in a common module. which needs to be unit tested. Marcin Moskala shows that this is really convenient in Kotlin.

Jobs

We’re looking for experienced Android developers to help us build the world’s fastest growing online supermarket. Our app boasts a 4.4 star review in Google Play. Join us and help us make it even better!

Scoop brings co-workers and neighbors together into a smooth carpooling experience. Built around solid engineering principles and standard tools like RxJava and Retrofit, our app needs talented Android engineers to tackle exciting features while we power through rapid growth.

Yelp connects consumers with great local businesses. We’re looking for senior Android engineers to support our Android developer community and drive long-term technical initiatives.

We’re looking for Android Developers to work within our highly experienced team, delivering key product features on our global product with over 370 million registered users!

Big Nerd Ranch specializes in developing business-building mobile apps for our clients, teaching fellow developers, and writing our best selling Big Nerd Ranch Guides. We are looking for Mid-Senior level Android Engineers to join our team in Atlanta.

Libraries & Code

A voice controlled smart mirror powered by Raspberry Pi3B+ and AndroidThings. Mirror is capable to display or hide widgets such as weather, news, time, calendar when the correct voice command is given.

Shot is a Gradle plugin that simplifies the execution of screenshot tests using Screenshot Tests For Android by Facebook.

A set of Kotlin extensions for Android app development.

News

The latest Android emulator has been updated to include a frameless emulator window, Quick Boot improvements to make working with AVD snapshots more efficient, and the latest QEMU.

Google announced the preview of Android KTX - a set of extensions designed to make writing Kotlin code for Android more concise, idiomatic, and pleasant.

Videos & Podcasts

In part 4 of this 5 part series, we learn how to do double null check for lazy initiation, and why static module method in Dagger is exciting.

In this mini-fragment episode, Donn talks about Item #9 of the Effective Java (Third Edition) book – Prefer try with resources to try finally.