Kotlin • Jul 23, 2025 Want Discriminated Unions in Kotlin? Use a Sealed Class. Does Kotlin support discriminated unions? In a way, yes! See how you can use sealed classes to replicate their function.
Kotlin • May 18, 2020 Download Files in Kotlin for Android Using Ktor and Intents Letting users download files from inside your Android app to view externally can be a pain. I'll show you how to add this with intents and Ktor.
Kotlin • Nov 11, 2019 How to Create a SearchView with Suggestions in Kotlin Creating a SearchView with suggestions isn't simple as giving the SearchView a list of strings. It requires a CursorAdapter.
Android Development • Jun 08, 2019 Data Binding with Live Data for RecyclerView in Kotlin How to add data binding and live data for RecyclerViews in your Android and Kotlin apps.
Mobile Apps • Mar 29, 2019 Adding Notification Badges to a Kotlin App It can be hard to figure out how to add notification badges to your Kotlin app. I'll show you two types of badges and how to implement them.
Mobile Apps • Jan 26, 2019 An Easy-to-Use TimePickerDialog for Kotlin The TimePickerDialog in Android doesn't allow for restrictions on the times a user can select. But MaterialDateTimePicker allows for this.
Mobile Apps • Dec 03, 2018 Building a Horizontal Picker or Spinner in Kotlin There are a lot of widgets in Android, unfortunately a picker or spinner isn't one of them. Follow these steps to add one to your Kotlin project.
Developer Tools • Oct 07, 2018 Getting Started Unit Testing with Kotlin When learning a new language, it's important to understand testing frameworks. With Kotlin, it's made easy by its similarity and interoperability with Java.
Android Development • Sep 11, 2017 Kotlin vs. Java – Why Kotlin on Android is Here to Stay Kotlin is here to make mobile development easier on Android and to end the mutation and Null Pointer Exceptions of the past.
Exploratory Testing • Dec 29, 2025 3 Tips for Effective Snapshot Testing with Roborazzi Roborazzi is great for many testing applications but can be tricky. Here are my top tips for effective snapshot testing with Roborazzi.
Game Development • Dec 15, 2025 4 Reasons I Chose Raylib Over Other Game Engines Raylib is a simple, fun library to work with, and I'll continue to use it for all of my games for the foreseeable future.
Exploratory Testing • Oct 06, 2025 Use JUnit Parameterized Tests to Force Test Coverage Here's how unit tests using JUnit parameterized tests helped catch a couple of would-be bugs and kept our tests manageable and readable.
