I've been using Kotlin with Android for over a year. There have been few problems with SDK interoperability. Since I started using Kotlin Google blessed it. The

I've been using Kotlin with Android for over a year. There have been few problems with SDK interoperability. Since I started using Kotlin Google blessed it. The one annoying gotcha was JSON parsing. If the fields on your models are not declared as nullable, they can still be set to null in the JSON which causes a NPE.