gistfile1.txt

class DisplayTimer (context: Context) : LinearLayout(context)
    , LifecycleObserver {

    private var timer:Timer? =null

    @OnLifecycleEvent(Lifecycle.Event.ON_RESUME)
    fun igniteTimer(){
        timer = Timer("ring the bell").apply{
            schedule(object : TimerTask() {
                override fun run() {
                    Tick()
                }
                
            },200_000, 250)
        }
    }

    @OnLifecycleEvent(Lifecycle.Event.ON_PAUSE)
    private fun release(){
        timer?.cancel()
        timer?.purge()
    }

    private fun Tick() {
        // update the countdown timer view here
    }
}