Answered by : abdullah-0kvpuik7ilzv

val timer = object: CountDownTimer(20000, 1000) { override fun onTick(millisUntilFinished: Long) {...} override fun onFinish() {...}
}
timer.start()

Source : https://stackoverflow.com/questions/54095875/how-to-create-a-simple-countdown-timer-in-kotlin | Last Update : Wed, 25 Aug 21