android convert unix time to utc date

Question

I am a little confused with the unix time stamp conversion to java.util.Date involving the time zones.

I have a unix time stamp that is "1367832568". it is a UTC date (Mon May 06 17:29:28 GMT+00:00 2013). when i do following :

Date d = new Date(1367832568 * 1000);

it gives me Mon May 06 17:29:28 GMT+08:00 2013 which is not correct. it should give me:

Mon May 07 01:29:28 GMT+08:00 2013

because the unix time stamp is actually a UTC date. so this is confusing. what should i do to convert the UTC unix time stamp to correctly convert to a UTC Date object.

Answer 1

I'm not sure exactely how are you formatting your date object, but by setting the timezone to the dateformat object (to GMT) I'm able to get

Mon May 06 09:29:28 GMT 2013 AM

which is the same date you are looking for.

    long time = 1367832568 * (long) 1000;
    Date date = new Date(time);
    SimpleDateFormat format = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy a");
    format.setTimeZone(TimeZone.getTimeZone("GMT"));
    Log.d("date", format.format(date));