我有一个定时器，我想把定时器的时间连接到一个时钟上，让用户看到定时器将在什么时间停止。

例如，定时器从12:28pm开始，12分钟后将在12:40pm结束。

我怎样才能在Kotlin中做到这一点。

This the code

val timer = object : CountDownTimer(20000, 1000) {
        override fun onTick(millisUntilFinished: Long) {
            var diff = millisUntilFinished
            val secondsInMilli: Long = 1000
            val minutesInMilli = secondsInMilli * 60
            val elapsedMinutes = diff / minutesInMilli
            diff %= minutesInMilli
            var currentclock : TextClock
            var clockfinish : TextClock
           textview1.text = "$elapsedMinutes min"
        override fun onFinish() {
            textview1.text = "Your time is up"