How To Get List Of Dates Between Two Dates?

In my application user should select date from listview. The problem is generating this list. For example I need all dates between 2010-2013 or June-August (period maybe day, month

Solution 1:

For a list you could just do:

public static List<LocalDate> datesBetween(LocalDate start, LocalDate end) {
    List<LocalDate> ret = new ArrayList<LocalDate>();
    for (LocalDate date = start; !date.isAfter(end); date = date.plusDays(1)) {
        ret.add(date);
    }
    return ret;
}

Note, that will include end. If you want it to exclude the end, just change the condition in the loop to date.isBefore(end).

If you only need an Iterable<LocalDate> you could write your own class to do this very efficiently rather than building up a list. You could do this with an anonymous class, if you didn't mind a fair degree of nesting. For example (untested):

publicstaticIterable<LocalDate> datesBetween(final LocalDate start,
                                               final LocalDate end) {
    returnnewIterable<LocalDate>() {
        @OverridepublicIterator<LocalDate> iterator() {
            returnnewIterator<LocalDate>() {
                privateLocalDate next = start;

                @OverridepublicbooleanhasNext() {
                    return !next.isAfter(end);
                }

                @OverridepublicLocalDatenext() {
                    if (next.isAfter(end)) {
                        throwNoSuchElementException();
                    }
                    LocalDate ret = next;
                    next = next.plusDays(1);
                    return ret;
                }

                @Overridepublicvoidremove() {
                    thrownewUnsupportedOperationException();
                }
            };
        }
    };
}

Solution 2:

Use a DatePicker Fragment like this:

privatestaticclassDatePickerFragmentextendsDialogFragmentimplementsDatePickerDialog.OnDateSetListener {

    @Overridepublic Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current date as the default date in the pickerfinalCalendarc= Calendar.getInstance();
        intyear= c.get(Calendar.YEAR);
        intmonth= c.get(Calendar.MONTH);
        intday= c.get(Calendar.DAY_OF_MONTH);

        // Create a new instance of DatePickerDialog and return itreturnnewDatePickerDialog(getActivity(), this, year, month, day);
    }

    @OverridepublicvoidonDateSet(DatePicker view, int year, int monthOfYear,
            int dayOfMonth) {
        // Copy the Date to the EditText set.
        dateValue = String.format("%04d", year) + "-" + String.format("%02d", monthOfYear + 1) + "-" + String.format("%02d", dayOfMonth);
    }

}

This should be easier to get dates in the first place. Use the below code for Date Ranges:

publicstaticList<Date> dateInterval(Date initial, Date final) {
     List<Date> dates = newArrayList<Date>();
     Calendar calendar = Calendar.getInstance();
     calendar.setTime(initial);

     while (calendar.getTime().before(final)) {
         Date result = calendar.getTime();
         dates.add(result);
         calendar.add(Calendar.DATE, 1);
     }

return dates;
}

Cheers!

Credits: this