public static DateRangePickerDialogFragment newInstance(
     long startDate, long endDate, OnDateRangeSetListener dateRangeSetListener) {
   DateRangePickerDialogFragment fragment = new DateRangePickerDialogFragment();
   fragment.mStartRange = new Date(startDate);
   fragment.mEndRange = new Date(endDate);
   fragment.mDateRangeSetListener = dateRangeSetListener;
   return fragment;
 }
 public static DateRangePickerDialogFragment newInstance(
     OnDateRangeSetListener dateRangeSetListener) {
   DateRangePickerDialogFragment fragment = new DateRangePickerDialogFragment();
   fragment.mDateRangeSetListener = dateRangeSetListener;
   return fragment;
 }