How do I create a NSTimer on a background thread?

Question

I have a task that needs to be performed every 1 second. Currently I have an NSTimer firing repeatedly every 1 sec. How do I have the timer fire in a background thread (no

Answer 1

Swift only (although can probably be modified to use with Objective-C)

Check out DispatchTimer from https://github.com/arkdan/ARKExtensions, which "Executes a closure on specified dispatch queue, with specified time intervals, for specified number of times (optionally). "

let queue = DispatchQueue(label: "ArbitraryQueue")
let timer = DispatchTimer(timeInterval: 1, queue: queue) { timer in
    // body to execute until cancelled by timer.cancel()
}