Android 我的倒计时器工作不正常

我有一个倒计时器，它每X秒做一件事。 当秒数不多时，让我们说6。。它工作正常，但当秒数很多（比如240秒）时，它会打印出如下日志：

2019-02-08 16:40:18.160 23195-23195/com.pondhoppers.riptide.app I/System.out:  waiting time left - 47
2019-02-08 16:40:18.181 23195-23195/com.pondhoppers.riptide.app I/System.out: waiting time left - 41
2019-02-08 16:40:18.208 23195-23195/com.pondhoppers.riptide.app I/System.out: waiting time left - 35
2019-02-08 16:40:18.233 23195-23195/com.pondhoppers.riptide.app I/System.out: waiting time left - 29
2019-02-08 16:40:18.298 23195-23195/com.pondhoppers.riptide.app I/System.out: waiting time left - 23
2019-02-08 16:40:18.323 23195-23195/com.pondhoppers.riptide.app I/System.out: waiting time left - 3

代码：

---

我决定在后台线程中执行此操作，效果很好：）

new CountDownTimer(240000, 1000) {
    @Override
    public final void onTick(final long millisUntilFinished) {
        System.out.println("waiting time left - " + (int) (millisUntilFinished * .001f));
        tvRaffleCount.setText(String.valueOf((Integer.valueOf(countDown)-1000)* 60000));
    }

    @Override
    public final void onFinish() {
        try {
            tvRaffleCount.setText("");
        } catch (Exception v) {
            //raffle mode is off
            v.printStackTrace();
        }

    }
}.start();