Android time in iso 8601
If I have correctly understood your objective you can use directly the SimpleDateFormat class.
Example code:
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ", Locale.UK);String formattedDate = sdf.format(new Date());You can see documentation in SimpleDateFormat
Regards.
API level 26 added support for many time and date classes from Java. So this solution can now also be applied:https://stackoverflow.com/a/25618897/3316651
// works with InstantInstant instant = Instant.now();System.out.println(instant.format(DateTimeFormatter.ISO_INSTANT));// works with ZonedDateTime ZonedDateTime zdt = ZonedDateTime.now();System.out.println(zdt.format(DateTimeFormatter.ISO_INSTANT));// example output2014-09-02T08:05:23.653ZCredits to JodaStephen.
Android doc:https://developer.android.com/reference/java/time/format/DateTimeFormatter.html#ISO_INSTANT