thesiamak

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() {

thesiamak

class MyFragment:Fragment(){

    val displayTimer = DisplayTimer(requireContext())

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        // assign the observability to timer view.
        viewLifecycleOwner.lifecycle.addObserver(displayTimer)
    }

thesiamak

class DisplayTimer (context: Context) : LinearLayout(context)
, LifecycleObserver { //LifecycleObserver is implemented here. 

// Code removed for brevity
}

thesiamak

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

    fun igniteTimer(){
        Timer("ring the bell")
            .schedule(object : TimerTask() {
                override fun run() {
                    Tick()
                }