public void setYearRange(int startYear, int endYear) {
   if (endYear <= startYear) {
     throw new IllegalArgumentException("Year end must be larger than year start");
   }
   mMinYear = startYear;
   mMaxYear = endYear;
   if (mDayPickerView != null) {
     mDayPickerView.onChange();
   }
 }
 public void setFirstDayOfWeek(int startOfWeek) {
   if (startOfWeek < Calendar.SUNDAY || startOfWeek > Calendar.SATURDAY) {
     throw new IllegalArgumentException(
         "Value must be between Calendar.SUNDAY and " + "Calendar.SATURDAY");
   }
   mWeekStart = startOfWeek;
   if (mDayPickerView != null) {
     mDayPickerView.onChange();
   }
 }