In a previous post, I covered what I consider a pretty useful feature of Kotlin: sealed classes. These classes can be quite useful when modeling errors in Android apps (and beyond). But they have their limitations. Classes, as you probably know, in Kotlin can only extend a single class. …

When coming back to using Kotlin I re-remember the great features of this language that make it a joy to work with. In this post, I want to give a quick primer on the sealed classes feature. It’s not a new feature. Most experienced engineers working with Kotlin and/or Android…

Recently, the excellent “Guide to app architecture” was released. This is an awesome resource for anyone entering the Android app development field. It summarises many of the important architectural decisions that need to be taken in mind when creating a new Android app. …

I’ve learned about the popular SOLID principles early on in my career. I was delighted. Finally, some guidelines I can refer to and pinpoint to my colleagues when building software instead of the usual subjective “in-my-opinion” arguments. And for the most part, these principles are quite solid (pun intended). …

It was long ago when I wrote an article about method swizzling (To swizzle or not to swizzle?) in which I was describing how it works in Objective-C and whether I would use it or not. Frankly, my experience with method swizzling was experimental and I never worked on a…

Almost every developer has some kind of crash monitoring set up for their app. And the most common metric they monitor for inferring the app’s health is the crash rate. But in a properly structured app, recoverable and non-recoverable exceptions are caught and displayed in a (hopefully) readable way to…

Most books I read are great. But few books offer as practical advice on a subject as “Never split the difference”. The subject of negotiations is wider than first thought. If you think a bit about it, we are negotiating our entire life: from an argument with our partner and…

Usually, when you need to run a suspend method while developing your Android app, you just use viewModelScope out of habit. No need to think about which CoroutineScope to use since all the logic happens in the View Model most of the time. (Note: Check this out for a quick…

They say that the first impression is the best impression that one should make. Well, the first impression in an app is the splash screen. And splash screens in Android have been suffering since the beginning. Usually, in Android there are too many APIs to do the same thing, but…