title: Android Kotlin CountDown Timer for time add
body: <p>in the timer I use how to add a time when a button is pressed? for example, I want millisUntilFinished to increase by 5 seconds when I press a button. I tried with the global variable but it didn't.</p>
  
  <pre><code> object :CountDownTimer(10000,1000){
              override fun onFinish() {
  
                  timeText.text = "Left : 0"
                  handler.removeCallbacks(runnable)
                  for (image in imageArray){
                      image.visibility = View.INVISIBLE
                  }
                  for (add in timeAdd){
                      add.visibility = View.INVISIBLE
                  }
                  button.visibility = View.VISIBLE
              }
  
              override fun onTick(millisUntilFinished: Long) {
                   timeText.text = "Left : "+millisUntilFinished/1000
              }
  
          }.start()
  </code></pre>