Calendar.getTime（）到Date对象

Question

I've an instance of a Calendar setted with UTC time zone, I need to be UTC becouse I've to sync with a server that is UTC.

I need to create a Date object from this Calendar, and I use Calendar.getTime().

But when I try to print out the Date object I see it with a different TimeZone (CEST instead of UTC)

TimeZone timeZone = TimeZone.getTimeZone("UTC");
Calendar cal = Calendar.getInstance(timeZone);
cal.setTime(timeMillisecond);
Date d = cal.getTime();
Log.d("TAG", d.toString());

EDIT:

When I pass the date object to the server, I get it with CEST timezone instead of UTC time zone.

Answer 1

You can use sdf, set its timezone and parse it accordingly.

SimpleDateFormat sdf = new SimpleDateFormat(
            "yyyy-MM-dd HH:mm:ss");
sdf.setTimeZone(TimeZone.getTimeZone("Etc/UTC"));

try {
                            Date dt = sdf.parse(sdf.format(Calendar.getInstance()));
                        } catch (ParseException e) {
                            e.printStackTrace();
                        }

This worked for me.

Answer 2

Try the below code, it will provide you the date in UTC.

SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy dd,MM hh:mm:ss", Locale.getDefault());
dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
String utcTime = dateFormat.format(new Date(timeMillisecond));
Log.d("TAG", utcTime);

It will provide you the date in yyyy dd,MM hh:mm:ss format but you can provide other format according to your need.