Creating singletons in Kotlin

A singleton class is a class that can have only one instance/object of that class at a time. The concept is to restrict instantiation of objects to a certain number. In this recipe, we will explore singletons in Kotlin.

Getting ready

I'll be using Android Studio 3 to write code.

How to do it…

Follow these steps to create singletons in Kotlin:

1. Kotlin does not have static members or variables, so for declaring static members of a class, we use companion object. Check out this example:

class SomeClass {

    companion object {
   ...