Singleton with parameter in Kotlin

Question

I am trying to convert an Android app from Java to Kotlin. There are a few singletons in the app. I used a companion object for the singletons without constructor parameters

Answer 1

If the only parameter you need is the application Context, then you can initialize it to a top level val, early in a ContentProvider, like the Firebase SDK does.

Since declaring a ContentProvider is a bit cumbersome, I made a library that provides a top level property named appCtx for all places where you don't need an Activity or other special lifecycle bound context.