I try to use schedule on iOS by

BGTaskScheduler.sharedScheduler.registerForTaskWithIdentifier("My.ID", null, ::handleBackgroundRefresh)

Ant I have error

Null can not be a value of a non-null type dispatch_queue_t? /* = NSObject? */

NSObject?

is a non-null type? PS: How can I starts something “every 30 seconds” on iOS?

Hi! This seems like a bug reported here already. Problem is related to the common-iOS source set. The root cause is described in https://youtrack.jetbrains.com/issue/KT-42095, so you can follow it for updates, and temporary change the project’s source sets hierarchy.

The code in

ios

section. And

gradle build

has found no problems.