object : CountDownTimer(15000, 1000) {
            override fun onTick(p0: Long) {
                btn_ok.visibility = View.INVISIBLE
                timeText.text = "Time: " + (p0 / 1000)
            }
            override fun onFinish() {
                for (image in viewModel.imageArray) {
                   image.isClickable = false
                }
                timeText.text = "Time out"
                btn_ok.visibility = View.VISIBLE
                scoreText.visibility = View.INVISIBLE

                handler.removeCallbacks(runnable)
               // finish = true
            }
        }.start()