android diff days between two dates

Question

i have in my android app a date picker. i would like to get the diff days between the selected date and the Date of Today.

my Result:

E/-->: DatePicker: 1448798400691   // 29.11.2015
E/-->: NOW: 1448920633692
E/-->: DIFF: -1
E/-->: DatePicker: 1448884800191   // 30.11.2015
E/-->: NOW: 1448920637192
E/-->: DIFF: 0
E/-->: DatePicker: 1448971200451   // 01.12.2015
E/-->: NOW: 1448920644463
E/-->: DIFF: 0

You should also set the current day's hour, minute, second and millisecond part to 0. — 1615903, Nov 30 '15 at 10:19
use `long dtMili = System.currentTimeMillis();` to get current time — karan, Nov 30 '15 at 10:22
i also set the house,minute,second - days = 0 :/ i try it with System.currentTimeMillis - days = 0 :/ — Trombone0904, Nov 30 '15 at 10:25

karan · Answer 1 · 2015-11-30T11:13:33.583

1

You can calculate the difference as follows. to get dates use the following code.

//to get date from time picker

Calendar calendar = Calendar.getInstance();
calendar.set(datePicker.getYear(), datePicker.getMonth(), datePicker.getDayOfMonth(), 0, 0, 0);        //use object of Datepicker widget

long diff = calendar.getTimeInMillis() - System.currentTimeMillis();       //calculate difference
long seconds = TimeUnit.MILLISECONDS.toSeconds(diff);        //here you will have diff in seconds.
long daysdiff = TimeUnit.MILLISECONDS.toDays(diff);          //if you  want diff in days

edited Nov 30 '15 at 11:13

answered Nov 30 '15 at 10:28

karan

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you can keep the threshold of any seconds, generally 5 to 10 secs if not using real time. – karan Nov 30 '15 at 10:30
where i get in this code the day diff? there a only the diff in seconds oO ? – Trombone0904 Nov 30 '15 at 10:37
unable to understand what you want to say, please ask clearly – karan Nov 30 '15 at 10:38
your long diff only have the milliseconds between the to dates. but not the days. my code do the same - but with wrong result – Trombone0904 Nov 30 '15 at 10:40
can you try my code, and tell if it is working fine? – karan Nov 30 '15 at 10:41
Try the changed code. I think date picker was not setting correct date first and we were getting incorrect start date as you were using Datepicker, you need to use Datepicker widget. – karan Nov 30 '15 at 11:05
sry but your code is not the correct one. i would like to have the DIFF DAYS - not DIFF SECONDS – Trombone0904 Nov 30 '15 at 11:10
Look at my Edit Post 1. Your your show the same result – Trombone0904 Nov 30 '15 at 11:19
what is the scenario if you select some other date from picker – karan Nov 30 '15 at 11:28
if i sect 02.12.2015 instead of 01.12.2015: Wed Dec 02 00:00:00 GMT+00:00 2015;Mon Nov 30 12:00:00 GMT+00:00 2015; 1 (wrong, too) – Trombone0904 Nov 30 '15 at 12:15
i do not understand the problem. i try your code, look at my first post for result – Trombone0904 Nov 30 '15 at 20:59

score 1 · Answer 2 · answered Dec 14 '15 at 11:10

you should try this

SimpleDateFormat format = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss");
Date past = format.parse("12/10/2015 18:10:52");
Date now = new Date();
System.out.println(TimeUnit.MILLISECONDS.toSeconds(now.getTime() - past.getTime()) + " seconds ago");
System.out.println(TimeUnit.MILLISECONDS.toMinutes(now.getTime() - past.getTime()) + " minutes ago");
System.out.println(TimeUnit.MILLISECONDS.toHours(now.getTime() - past.getTime()) + " hours ago");
System.out.println(TimeUnit.MILLISECONDS.toDays(now.getTime() - past.getTime()) + " days ago");

you can pass your selected date in format.parse("") in given format

score 0 · Answer 3 · answered Nov 30 '15 at 10:10

you can use this method to get difference between two dates.

  public static int getDateDifference(long startDate, long endDate) {

    //milliseconds
    long different = endDate - startDate;

    long secondsInMilli = 1000;
    long minutesInMilli = secondsInMilli * 60;
    long hoursInMilli = minutesInMilli * 60;
    long daysInMilli = hoursInMilli * 24;

    long elapsedDays = different / daysInMilli;
    return (int) elapsedDays;
}

score 0 · Accepted Answer · answered Nov 30 '15 at 10:47

Try this

public static long printDifference(Date startDate, Date endDate){

    //milliseconds
    long different = endDate.getTime() - startDate.getTime();

    long secondsInMilli = 1000;
    long minutesInMilli = secondsInMilli * 60;
    long hoursInMilli = minutesInMilli * 60;
    long daysInMilli = hoursInMilli * 24;

    long elapsedDays = different / daysInMilli;
    different = different % daysInMilli;

    long elapsedHours = different / hoursInMilli;
    different = different % hoursInMilli;

    long elapsedMinutes = different / minutesInMilli;
    different = different % minutesInMilli;

    long elapsedSeconds = different / secondsInMilli;

    return elapsedDays;
}

score 0 · Answer 5 · answered Nov 30 '15 at 11:06

try this example to solve the

    String dateStart = "11/28/2015 09:29:58";
        String dateStop = "11/29/2015 10:31:48";

        //HH converts hour in 24 hours format (0-23), day calculation
        SimpleDateFormat format = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");

        Date d1 = null;
        Date d2 = null;

        try {
            d1 = format.parse(dateStart);
            d2 = format.parse(dateStop);

            //in milliseconds
            long diff = d2.getTime() - d1.getTime();

            long diffSeconds = diff / 1000 % 60;
            long diffMinutes = diff / (60 * 1000) % 60;
            long diffHours = diff / (60 * 60 * 1000) % 24;
            long diffDays = diff / (24 * 60 * 60 * 1000);
   }
  catch(Exception e){}

android diff days between two dates

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