If you want to develop Android apps, you need to understand how to create and use Activities. Our new course, Android Fundamentals: Activities, is the...

Kotlin is free and open source, and makes coding for Android even more fun. In this tutorial, we'll look at nullability, loops, and conditions in Kotlin.

Learn about exceptions and how to handle them in Kotlin. We'll look at checked and unchecked exceptions, the try construct, @Throws, and more.

Learn how to use IBM Watson's Visual Recognition service to create an Android app that can guess a person's age and gender and identify objects in an image.

Android software development is the process of creating new applications running on the Android operating system. These apps are mainly written in Java, C++,...

Learn how to to achieve concurrency in RxJava with Schedulers, the subscribeOn() operator, the observeOn() operator, and the flatMap() operator.

Kotlin is a functional language, and in this post, you'll learn about extension functions, higher-order functions, closures, and inline functions in Kotlin.

In this short tutorial, you'll learn everything you need to know to aptly use Java's Single Abstract Method (SAM) interfaces in Kotlin code.

If you're storing user data, it's critical that you do so securely. This tutorial will get you up and running by looking at the storage system and how to...

By using IBM Watson's Conversation service, you can create AI-powered conversational user interfaces in minutes. Learn how to use it in Android apps.

Learn more about object-oriented programming in Kotlin with a look at abstract classes, interfaces, inheritance, and type aliases.

Learn how to update any existing project to support Android instant apps. You'll also learn how to implement App Links in your Android projects.

Do you want to get started using one of the hottest new programming languages out there? Then check out our new course, Kotlin Fundamentals.

Creating multithreaded Android applications doesn't have to mean lengthy code. Learn about Kotlin's useful techniques for running operations in parallel.

The Singleton Pattern is a software design pattern that guarantees a class has one instance only and a global point of access is provided by that class.