android Testing Reactive Presenters: Destructure Your ViewModel Lists! Back in the early days of Kotlin adoption on Android, many people started writing their unit tests using Kotlin. Even though the primary goal of this approach was to have a possibility to
kotlin Inlining Kotlin Properties Did you know that you can inline properties in Kotlin? I discovered this small feature accidentally while browsing through Kotlin docs, and thought it's worth a short article. So why is this useful?
kotlin Preconditions.kt: Validate Your Kotlin Input validation is important, so you're most likely familiar with the following pattern in Java: public static <T> T getFifthElement(@Nonnull T[] array) { if (array == null || array.length < 5) { throw
kotlin Where Should I Keep My Constants in Kotlin? There has recently been a discussion online about the best approach for storing global constants, or public static final fields in Javaspeak. This short article describes available options and points out some of
android-studio How to Try the New Android Studio and Get Away with It It's that time again when the fresh version of Android Studio hits the Canary channel, and of course, you're eager to try it. As soon as you open your project in the new
android A Curious Case of Multiple Locales One of the features introduced in Android N is the possibility to select multiple languages in Settings (Language and Locale), which should enable the system to resolve app locales in a smarter way.
android Making Rainbow HAT Work with the Android Things Google's IoT platform has recently been updated with a couple of exciting new tools: Android Things and Weave. Android Things allows developers to use familiar Android dev tools, such as Android Studio, Android
kotlin Concurrency Primitives in Kotlin I've recently started reading "Android Concurrency" by G. Blake Meike, and so far I can highly recommend this great book: it contains quite a lot of insight into how various Android
Understanding Test Rules If you've ever happened to write Espresso tests, you should be familiar with the following declaration: @Rule public ActivityTestRule<MainActivity> activityRule = new ActivityTestRule<>(MainActivity.class); The addition of @Rules
"Your Espresso, Sir!", or Stepping Up Your UI Tests With Test Butler Fact #1. Acceptance tests are great. Continuous integration is slowly becoming ubiquitous in mobile app development, and having a Jenkins instance run your entire regression test suite during the night, when everybody on
android Providing test doubles with Dagger 1 and Dagger 2 Dagger is a popular dependency injection solution, which works very well with Android, and at the moment is probably a must for any more or less complicated Android project. However, there are things
Keeping Your Secrets Safe With greenDAO's Database Encryption One of the most popular Android ORM solutions out there, greenDAO, has recently been updated with a new exciting feature - the database encryption. greenDAO now supports SQLCipher - an open source SQLite
Taking Photos Not So Simply: How I Got Bitten By ACTION_IMAGE_CAPTURE I've worked on a number of apps that are taking pictures for different use cases, and since it has always been a secondary feature for those apps, I've relied on using Intents, the
Testing Runtime Permissions: Lessons Learned Recently I've been working on adding the Android M Runtime Permissions support to the project I'm on at the moment. As an Android user, I find runtime permissions awesome. Permission model was not
Intro to RxJava/RxAndroid - GDG Munich Android Yesterday I gave a talk about RxJava and its usage in Android apps at the GDG Munich Android meetup. The code for the demo app and some more RxJava stuff can be found
All the things Compat Android is constantly evolving, every year we get new cool features and new awesome APIs added to the SDK. But backwards compatibility has always been an issue. Here's the Android versions distribution at
Going aspect-oriented with AspectJ and Google Analytics I've recently stumbled upon an interesting article called Aspect Oriented Programming in Android by Fernando Cejas. I heard about the aspect-oriented programming (AOP) with AspectJ a long time ago and it's always seemed
android Reliable functional tests with Espresso and Dagger One of the core properties of automated tests is that they should be reliable, meaning that a test should either pass or fail, no matter how many times or in what conditions it
Testing a sorted list with Espresso Espresso is a pretty powerful tool when it comes to writing acceptance tests for Android. Acceptance tests are the ones that make sure your entire feature (or a certain aspect of the feature)
io15 Android M Developer Preview: Running the Fingerprint Dialog sample So, the Android M Developer Preview is out! All related info is already published, including the Program Overview, guide to Setting up the SDK and the collection of Samples illustrating brand new Android
