How to get milliseconds from a date picker?

Question

In my project I am saving milliseconds in a sqllite databse, by default I am saving

System.currentTimeMillis()

in the database, but there is an option for the user to select previous date from a date picker? But what sould I save then when user selects a previous or up comming days from the date picker? How can I get that day as a long(milliseconds) format?

[This helps you lot](http://saigeethamn.blogspot.in/2010/05/date-and-time-picker-views-android.html) — Praveenkumar, Jul 11 '12 at 10:14
Do you mean how to get the time in millis from a date object? Cause that's just the .getTime() method of the date class... — reverse_engineer, Jul 11 '12 at 10:17
No when I will change the date from date picket then i want to get that date in milliseconds. — Reyjohn, Jul 11 '12 at 10:25

score 13 · Accepted Answer · edited May 23 '17 at 11:53

13

Create a Calender instance and set the date you want. Then call calendar.getTimeInMillis();. See the answer of this previous SO question for more information.

EDIT To set the calendar date you can use something like this:

//Lets suppose you have a DatePicker instance called datePicker
Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_MONTH, datePicker.getDayOfMonth());
cal.set(Calendar.MONTH, datePicker.getMonth());
cal.set(Calendar.YEAR, datePicker.getYear());

See the Calendar class for more information.

edited May 23 '17 at 11:53

Community

1
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answered Jul 11 '12 at 10:15

AggelosK

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I saw the answer but I am unable to find what should I write in the onDateSet(...) ? – Reyjohn Jul 11 '12 at 10:18

Oniya Daniel · Answer 2 · 2016-11-25T11:41:30.867

I was looking for a similar solution for a javase scenario when I came across this answer. I made a little modification to Angelo's answer to make my own case work, and it gave me exactly what I was looking for. To make things a little more interesting, I created a method that can be reused.

class Controller {

    public static Calendar cal = Calendar.getInstance();

    public static long getEpoch_fromDatePicker( DatePicker datePicker ) {

        Controller.cal.set(Calendar.DAY_OF_MONTH, datePicker.getValue().getDayOfMonth() );
        Controller.cal.set(Calendar.MONTH, datePicker.getValue().getMonthValue() );
        Controller.cal.set(Calendar.YEAR, datePicker.getValue().getYear() );

        return Controller.cal.getTimeInMillis() /1000;
    }
}

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How to get milliseconds from a date picker?

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