compile 'net.imknown:NoDelayCountDownTimerLib:1.1.1'

<dependency>
  <groupId>net.imknown</groupId>
  <artifactId>NoDelayCountDownTimerLib</artifactId>
  <version>1.1.1</version>
  <type>pom</type>
</dependency>

private long howLongLeftInMilliSecond = NoDelayCountDownTimer.SIXTY_SECONDS;

private NoDelayCountDownTimer noDelayCountDownTimer;
private NoDelayCountDownTimerInjector noDelayCountDownTimerInjector;

private TextView noDelayCountDownTimerTv;

...

private void initNoDelayCountDownTimer() {
    noDelayCountDownTimerInjector = new NoDelayCountDownTimerInjector<TextView>(noDelayCountDownTimerTv, howLongLeftInMilliSecond);

    noDelayCountDownTimer = noDelayCountDownTimerInjector.inject(new NoDelayCountDownTimerInjector.ICountDownTimerCallback() {
        @Override
        public void onTick(long howLongLeft, String howLongSecondLeftInStringFormat) {
            String result = getString(R.string.no_delay_count_down_timer, howLongSecondLeftInStringFormat);

            noDelayCountDownTimerTv.setText(result);
        }

        @Override
        public void onFinish() {
            noDelayCountDownTimerTv.setText(R.string.finishing_counting_down);
        }
    });
}

// set before start to shun some calc bug
noDelayCountDownTimerInjector.setHowLongLeftInMilliSecond(NoDelayCountDownTimer.SIXTY_SECONDS);
noDelayCountDownTimer.start();

noDelayCountDownTimer.cancel();