picker = new PersianDatePickerDialog(this)
               .setPositiveButtonString("باشه")
               .setNegativeButton("بیخیال")
               .setTodayButton("امروز")
               .setTodayButtonVisible(true)
               .setMinYear(1300)
               .setMaxYear(PersianDatePickerDialog.THIS_YEAR)
               .setMaxMonth(PersianDatePickerDialog.THIS_MONTH)
               .setMaxDay(PersianDatePickerDialog.THIS_DAY)
               .setInitDate(1370, 3, 13)
               .setActionTextColor(Color.GRAY)
               .setTypeFace(typeface)
               .setTitleType(PersianDatePickerDialog.WEEKDAY_DAY_MONTH_YEAR)
               .setShowInBottomSheet(true)
               .setListener(new PersianPickerListener() {
                   @Override
                   public void onDateSelected(@NotNull PersianPickerDate persianPickerDate) {
                       Log.d(TAG, "onDateSelected: " + persianPickerDate.getTimestamp());//675930448000
                       Log.d(TAG, "onDateSelected: " + persianPickerDate.getGregorianDate());//Mon Jun 03 10:57:28 GMT+04:30 1991
                       Log.d(TAG, "onDateSelected: " + persianPickerDate.getPersianLongDate());// دوشنبه  13  خرداد  1370
                       Log.d(TAG, "onDateSelected: " + persianPickerDate.getPersianMonthName());//خرداد
                       Log.d(TAG, "onDateSelected: " + PersianCalendarUtils.isPersianLeapYear(persianPickerDate.getPersianYear()));//true
                       Toast.makeText(context, persianPickerDate.getPersianYear() + "/" + persianPickerDate.getPersianMonth() + "/" + persianPickerDate.getPersianDay(), Toast.LENGTH_SHORT).show();
                   }

                   @Override
                   public void onDismissed() {

                   }
               });

picker = PersianDatePickerDialog(this)
    .setPositiveButtonString("باشه")
    .setNegativeButton("بیخیال")
    .setTodayButton("امروز")
    .setTodayButtonVisible(true)
    .setMinYear(1300)
    .setMaxYear(PersianDatePickerDialog.THIS_YEAR)
    .setMaxMonth(PersianDatePickerDialog.THIS_MONTH)
    .setMaxDay(PersianDatePickerDialog.THIS_DAY)
    .setInitDate(1400, 4, 19)
    .setActionTextColor(Color.GRAY)
    .setTypeFace(typeface)
    .setTitleType(PersianDatePickerDialog.WEEKDAY_DAY_MONTH_YEAR)
    .setShowInBottomSheet(true)
    .setListener(object : PersianPickerListener {
        override fun onDateSelected(persianPickerDate: PersianPickerDate) {
            persianPicker_faDate.text = persianPickerDate.persianLongDate
        }

        override fun onDismissed() {}
    })