title: countdown timer loop android
body: <p>I need to to show a countdown timer with 2 time periods, for example i need it to count down a 45 sec, then count down 15 sec and then loop it all over again 4 times.</p>
  
  <p>I tried this code but it seems to start all the timers at ones. I want at to start the first timer and wait till it finish and then start the second timer wait till it finish and then loop it again.
  what should i do??</p>
  
  <pre><code>for (int i = 0; i &lt; labsNum; i++) {
      currLabTV.setText("LAB " + (i + 1));
      if(isWorking) {
              timer = new WorkCounter(workNum * 1000, 1000);
              timer.start();
      }
      if(!isWorking){
          timer = new WorkCounter(restNum * 1000, 1000);
          timer.start();
      }
  }
  </code></pre>
  
  <p>i extended the CountDownTimer class.</p>
  
  <pre><code>public class WorkCounter extends CountDownTimer {
      public WorkCounter(long millisInFuture, long countDownInterval) {
          super(millisInFuture, countDownInterval);
      }
  
      @Override
      public void onTick(long millisUntilFinished) {
          String ms = String.format("%02d:%02d" , TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished), TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished));
          timeTV.setText(ms);
      }
  
      @Override
      public void onFinish() {
          if(isWorking) {
              workoutSign.setText("REST");
          }else {
              workoutSign.setText("WORKOUT");
          }
          isWorking = !isWorking;
      }
  }
  </code></pre>