Articles & Tutorials

Here are some details from Mark Allison on working with the new Adaptive Icons coming in Android O.

In this tutorial by Lovis Möller you'll learn about several classic Gang of Four patterns and how they can be implemented in Kotlin. Some of them are similiar to a repository by Dariusz Baciński we've published a few month ago but if you haven't seen it check out the article you might get some more context about the pattern and what makes Kotlin special.

Steve Peterson describes how the BuzzFeed app was one of the early adopter of Instant Apps.

Here are a few interesting aspects of Kotlin ranges, some of which Dan Lew found to be less-than-intuitive.

Tumblr Engineering introduces Graywater, a framework for decomposing complex items in a RecyclerView list in order to improve scroll performance, reduce memory usage, and lay a foundation for a more composition-oriented approach to building lists.

Zarah Dominguez's short intro to making the Domain app an Instant App.

In this three part series by Riyaz Ahamed you'll learn how ho to properly add dividers to a ListView while maintaining a great performance.

In the last post, we learned about immutability and concurrency. In this one, Anup Cowkur looks at Higher Order Functions and Closures.

Here are Mark Murphy's notes on O Developer Preview 3 (ODP3).

Josh Burton compiled the tips from the Google I/O 2017 session into a handy list for easy reference.

Nice article by Dan Lew about the non trivial aspects like internal optimisations or the performance of Kotlin Ranges.

Instead of leaving tons of confusing comments in your code, a much better approach is to adopt common design patterns. This article will introduce a few common design patterns for Android that you can use while developing apps.

Ignacio Monereo explores lifetime value (LTV), introducing predictive analytics, suggesting a simple formula for calculating LTV, and explaining how you can get a value you can use for planning.

In this two part tutorial Arkady Gamza will tell you how to use RxJava with the Camera2 API to get selfies from the camera.

Great tutorial by the Twilio dev team on how to build a smart doorbell using Android Things and leveraging a little Node.js/Express server and their service.

Nick Butcher updated his article on path morphing since Version 25.4 of the Android Support Library back-ported it all the way back to Ice Cream Sandwich.

Jobs

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Libraries & Code

Kotlin RSS reader using Google android architecture components libraries

A tool to convert Swift code to Kotlin in a very easy and quick way.

Graywater is a RecyclerView adapter that facilitates the performant decomposition of complex and varied list items. It does this by mapping large data models to multiple viewholders, splitting the work needed to create a complex list item over multiple frames.

TextView, EditText and Button with custom fonts with normal, bold and thin style for different languages.

News

The third developer preview of Android O is out. APIs are getting final, so checkout your apps and update accordingly - in particular pay attention to background limits and changes in networking, security, and privacy.

Support library 25.4.0 has been released (as well as 26.0.0. beta 2)

Videos & Podcasts

In this episode, Chet and !Tor talked with a veritable mob of Android app developers about interesting stuff from Google I/O 17 and in the Android O preview release.