تبدیل تاریخ میلادی به شمسی در اندروید

سلام دوست عزیز من از این کلاس استفاده کردم و نتیجه داد فقط اون متد های آخرشو باید به سلیقه خودت شخصی سازی کنی.

public class Utilities {

  private class SolarCalendar {

    public String strWeekDay = "";
    public String strMonth = "";

    int date;
    int month;
    int year;

    public SolarCalendar()
    {
      Date MiladiDate = new Date();
      calcSolarCalendar(MiladiDate);
    }

    public SolarCalendar(Date MiladiDate)
    {
      calcSolarCalendar(MiladiDate);
    }

    private void calcSolarCalendar(Date MiladiDate) {

      int ld;

      int miladiYear = MiladiDate.getYear() + 1900;
      int miladiMonth = MiladiDate.getMonth() + 1;
      int miladiDate = MiladiDate.getDate();
      int WeekDay = MiladiDate.getDay();

      int[] buf1 = new int[12];
      int[] buf2 = new int[12];

      buf1[0] = 0;
      buf1[1] = 31;
      buf1[2] = 59;
      buf1[3] = 90;
      buf1[4] = 120;
      buf1[5] = 151;
      buf1[6] = 181;
      buf1[7] = 212;
      buf1[8] = 243;
      buf1[9] = 273;
      buf1[10] = 304;
      buf1[11] = 334;

      buf2[0] = 0;
      buf2[1] = 31;
      buf2[2] = 60;
      buf2[3] = 91;
      buf2[4] = 121;
      buf2[5] = 152;
      buf2[6] = 182;
      buf2[7] = 213;
      buf2[8] = 244;
      buf2[9] = 274;
      buf2[10] = 305;
      buf2[11] = 335;

      if ((miladiYear % 4) != 0) {
        date = buf1[miladiMonth - 1] + miladiDate;

        if (date > 79) {
          date = date - 79;
          if (date <= 186) {
            switch (date % 31) {
              case 0:
                month = date / 31;
                date = 31;
                break;
              default:
                month = (date / 31) + 1;
                date = (date % 31);
                break;
            }
            year = miladiYear - 621;
          } else {
            date = date - 186;

            switch (date % 30) {
              case 0:
                month = (date / 30) + 6;
                date = 30;
                break;
              default:
                month = (date / 30) + 7;
                date = (date % 30);
                break;
            }
            year = miladiYear - 621;
          }
        } else {
          if ((miladiYear > 1996) && (miladiYear % 4) == 1) {
            ld = 11;
          } else {
            ld = 10;
          }
          date = date + ld;

          switch (date % 30) {
            case 0:
              month = (date / 30) + 9;
              date = 30;
              break;
            default:
              month = (date / 30) + 10;
              date = (date % 30);
              break;
          }
          year = miladiYear - 622;
        }
      } else {
        date = buf2[miladiMonth - 1] + miladiDate;

        if (miladiYear >= 1996) {
          ld = 79;
        } else {
          ld = 80;
        }
        if (date > ld) {
          date = date - ld;

          if (date <= 186) {
            switch (date % 31) {
              case 0:
                month = (date / 31);
                date = 31;
                break;
              default:
                month = (date / 31) + 1;
                date = (date % 31);
                break;
            }
            year = miladiYear - 621;
          } else {
            date = date - 186;

            switch (date % 30) {
              case 0:
                month = (date / 30) + 6;
                date = 30;
                break;
              default:
                month = (date / 30) + 7;
                date = (date % 30);
                break;
            }
            year = miladiYear - 621;
          }
        }

        else {
          date = date + 10;

          switch (date % 30) {
            case 0:
              month = (date / 30) + 9;
              date = 30;
              break;
            default:
              month = (date / 30) + 10;
              date = (date % 30);
              break;
          }
          year = miladiYear - 622;
        }

      }

      switch (month) {
        case 1:
          strMonth = "فروردين";
          break;
        case 2:
          strMonth = "ارديبهشت";
          break;
        case 3:
          strMonth = "خرداد";
          break;
        case 4:
          strMonth = "تير";
          break;
        case 5:
          strMonth = "مرداد";
          break;
        case 6:
          strMonth = "شهريور";
          break;
        case 7:
          strMonth = "مهر";
          break;
        case 8:
          strMonth = "آبان";
          break;
        case 9:
          strMonth = "آذر";
          break;
        case 10:
          strMonth = "دي";
          break;
        case 11:
          strMonth = "بهمن";
          break;
        case 12:
          strMonth = "اسفند";
          break;
      }

      switch (WeekDay) {

        case 0:
          strWeekDay = "يکشنبه";
          break;
        case 1:
          strWeekDay = "دوشنبه";
          break;
        case 2:
          strWeekDay = "سه شنبه";
          break;
        case 3:
          strWeekDay = "چهارشنبه";
          break;
        case 4:
          strWeekDay = "پنج شنبه";
          break;
        case 5:
          strWeekDay = "جمعه";
          break;
        case 6:
          strWeekDay = "شنبه";
          break;
      }

    }

  }

  public static String getCurrentShamsidate() {
    Locale loc = new Locale("en_US");
    Utilities util = new Utilities();
    SolarCalendar sc = util.new SolarCalendar();
    return String.valueOf(sc.year) + "/" + String.format(loc, "%02d",
      sc.month) + "/" + String.format(loc, "%02d", sc.date);
  }
  public static String getMonth(){
    Utilities util = new Utilities();
    SolarCalendar sc = util.new SolarCalendar();
    return sc.date+" "+sc.strMonth;
  }
  public static String getWeek(){
    Utilities util = new Utilities();
    SolarCalendar sc = util.new SolarCalendar();
    return sc.strWeekDay+"";
  }

}