来自Android设备的时间戳，格式为hh:mm:ss:SS [英] Timestamp from Android device in the format hh:mm:ss:SS

问题描述

我需要在Android中记录传感器数据.为了将值存储在数据库中，我需要将时间戳记作为主键，格式为hh:mm:ss:SS，其中SS表示毫秒值.当我尝试使用SensorEvent.timestamp(使用下面的代码)时，无法从Date类获取毫秒.

I have a requirement to log the sensor data in Android. In order to store the values in a Database, I need the timestamp as primary key in the format - hh:mm:ss:SS, where SS represents millisecond value. When I tried to use SensorEvent.timestamp(using the code below), I was unable to get the millisecond from Date class.

    long currTimeRelativeToBoot = SystemClock.uptimeMillis();
    long currTimeAbsolute = System.currentTimeMillis();
    double mStartTimeAbsoluteS = ((double)(currTimeAbsolute - currTimeRelativeToBoot))/(double)1000.0;
    double temp = mStartTimeAbsoluteS+((double)event.timestamp)/1000000000.0;
    Date time=new java.util.Date((long)temp*1000);

是否可以通过hh:mm:ss:SS格式从Android设备获取当前时间? 或替代方法是什么?

Is it possible to get the current time from the Android device in the format hh:mm:ss:SS? Or what is the alternative for this?

提前谢谢！

推荐答案

使用SimpleDateFormat，请参见教程此处.但是不建议您使用这种方法，如果您将其保存为很长的时间，则可以对其进行比较，订购等...

use SimpleDateFormat, see tutorial here. But it's not recommended this approach, if you save it as a long, you can compare it, order, etc...

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