java - 如何将 3 个数字四舍五入为 1？

Question

private Runnable updateTimerThread = new Runnable() {

        public void run() {

            timeInMilliseconds = SystemClock.uptimeMillis() - startTime;

            updatedTime = timeSwapBuff + timeInMilliseconds;

            int secs = (int) (updatedTime / 1000);
            int mins = secs / 60;
            secs = secs % 60;
            int milliseconds = (int) (updatedTime % 1000);
            timerValue.setText("" + mins + ":"
                    + String.format("%02d", secs) + ":"
                    + String.format("%03d", milliseconds));
            customHandler.postDelayed(this, 0);
        }

    };

当前结果 = 00.15.546 ，期望结果 00.15.5
毫秒是3位数我要1位数

Answer 1

If(milliseconds %10<50)
 milliseconds = milliseconds/100;
else
 milliseconds = milliseconds/100 + 1;

从头开始，它会给你一个十进制数，因为计时器不是我的错。尝试类似的东西: Math.round(毫秒*100)/100;\