How to calculate the time left untill some date

Question

I want to find the time left till some day and time. I mean that if the target time is March 27th ( year 2017 ) at 10 oclock and today is March 10th 8 oclock so the time left is 17 days and 2 hours.

Is there some way using the date android API to calculate this time left?

score 4 · Accepted Answer · answered Mar 05 '17 at 16:19

You can do this by calling this method:

public static Map<TimeUnit,Long> computeDiff(Date date1, Date date2) {
    long diffInMillies = date2.getTime() - date1.getTime();
    List<TimeUnit> units = new ArrayList<TimeUnit>(EnumSet.allOf(TimeUnit.class));
    Collections.reverse(units);
    Map<TimeUnit,Long> result = new LinkedHashMap<TimeUnit,Long>();
    long milliesRest = diffInMillies;
    for ( TimeUnit unit : units ) {
        long diff = unit.convert(milliesRest,TimeUnit.MILLISECONDS);
        long diffInMilliesForUnit = unit.toMillis(diff);
        milliesRest = milliesRest - diffInMilliesForUnit;
        result.put(unit,diff);
    }
    return result;
}

It give you a map of timeUnit and their value like:

Map:{DAYS=1, HOURS=3, MINUTES=46, SECONDS=40, MILLISECONDS=0, MICROSECONDS=0, NANOSECONDS=0},

Then you can convert it to anything you want.

here its result.get(TimeUnit.DAYS) and etc – Sabri Meviş Aug 05 '18 at 14:44 — Sabri Meviş, Aug 05 '18 at 14:44

score 0 · Answer 2 · answered Mar 05 '17 at 16:34

0

Use

 long futureTimeMillis;
 long currentTimeMillis
 DateUtils.getRelativeTimeSpanString(futureTimeMillis, currentTimeMillis, DateUtils.MINUTE_IN_MILLIS);

answered Mar 05 '17 at 16:34

ayz4sci

2,220
1
16
17

How to calculate the time left untill some date

2 Answers2