Android Countdown Timer to Date

Question

I am trying to make a countdown timer for a game/date in android. I want to create a timer that displays the days, hours, minutes, and seconds to a date I specify with a fin

Answer 1

long startTime;

private void start_countdown_timer()
{
    SimpleDateFormat formatter = new SimpleDateFormat("dd.MM.yyyy, HH:mm:ss");
    formatter.setLenient(false);


    String endTime = "18.09.2017, 15:05:36";
    long milliseconds=0;

    final CountDownTimer mCountDownTimer;

    Date endDate;
    try {
        endDate = formatter.parse(endTime);
        milliseconds = endDate.getTime();

    } catch (ParseException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    startTime = System.currentTimeMillis();


    mCountDownTimer = new CountDownTimer(milliseconds, 1000) {
        @Override
        public void onTick(long millisUntilFinished) {

            startTime=startTime-1;
            Long serverUptimeSeconds =
                    (millisUntilFinished - startTime) / 1000;

            String daysLeft = String.format("%d", serverUptimeSeconds / 86400);
            //txtViewDays.setText(daysLeft);
            Log.d("daysLeft",daysLeft);

            String hoursLeft = String.format("%d", (serverUptimeSeconds % 86400) / 3600);
            //txtViewHours.setText(hoursLeft);
            Log.d("hoursLeft",hoursLeft);

            String minutesLeft = String.format("%d", ((serverUptimeSeconds % 86400) % 3600) / 60);
            //txtViewMinutes.setText(minutesLeft);
            Log.d("minutesLeft",minutesLeft);

            String secondsLeft = String.format("%d", ((serverUptimeSeconds % 86400) % 3600) % 60);
            //txtViewSecond.setText(secondsLeft);
            Log.d("secondsLeft",secondsLeft);


        }

        @Override
        public void onFinish() {

        }
    }.start();


}