Stop a queue

Above ViewDidLoad:

private var workItem: DispatchWorkItem?

In ViewDidLoad or where the queue shows:

workItem = DispatchWorkItem {

           

    //actions in the queue

            

        }

        DispatchQueue.main.asyncAfter(deadline: .now(), execute: workItem!)

In ViewDidDisappear

//if loading web view

self.nameOfWebView.stopLoading()

        workItem?.cancel()