Android，CountDownTimer延迟

Question

我正在使用CountDownTimer：

timer = new CountDownTimer(30 * 1000, 1000) {
        @Override
        public void onTick(long millisUntilFinished) {
            handleOnTick(millisUntilFinished);
        }

        @Override
        public void onFinish() {
            handleOnFinish();
            playSound(ALERT_SECOND_FINISH);
        }
    };
    timer.start();
}

private void handleOnTick(long millisUntilFinished) {
    millisUntilFinished = millisUntilFinished / 1000;
    tvTime.setText(
            String.format(Locale.US,
                    "%d:%02d",
                    min, sec)
    );
}

问题是，当handleOnTick被调用时，millisUntilFinished是〜29953而millisUntilFinished = millisUntilFinished / 1000等于29，而我期待30！ 那么如何在不使用counter值的情况下处理这种延迟呢？我使用了Bigdecimal和Rounding，但仍然传递的值小于30000。

Answer 1

试试这个：millisUntilFinished = Math.round(millisUntilFinished / 1000.0f);