Timers

Timer and DispatchSourceTimer are fully supported on Android. Timers scheduled on the main run loop fire on the Android UI thread.

Timer

Schedule a repeating timer on the main run loop:

Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true) { timer in
    print("tick")
}

Schedule a one-shot timer:

Timer.scheduledTimer(withTimeInterval: 5.0, repeats: false) { _ in
    performDelayedAction()
}

DispatchSourceTimer

Use DispatchSourceTimer for more control over scheduling:

let timer = DispatchSource.makeTimerSource(queue: .main)
timer.schedule(deadline: .now() + 1.0, repeating: 2.0)
timer.setEventHandler {
    print("timer fired")
}
timer.resume()

Cancel the timer when done:

timer.cancel()