کلاس زیر، تبدیل تاریخ میلادی به شمسی هستش :
برای استفاده هم می تونید به این صورت عمل کنید :
PersianDate date = new PersianDate(); lblPersianDateTextView.setText(date.todayShamsi());
import java.text.SimpleDateFormat;
import java.util.Date;
public class PersianDate {
public String todayShamsi() {
SimpleDateFormat sdf = new SimpleDateFormat(“yyyyMMdd”);
String curentDateandTime = sdf.format(new Date());
String year = curentDateandTime.substring(0, 4);
String month = curentDateandTime.substring(4, 6);
String day = curentDateandTime.substring(6, 8);
int Y = Integer.valueOf(year);
int M = Integer.valueOf(month);
int D = Integer.valueOf(day);
return Shamsi(Y, M, D);
}
public String Shamsi(int Y, int M, int D)
{
if (Y == 0)
Y = 2000;
if (Y < 100)
Y = Y + 1900;
if (Y == 2000)
{
if (M > 2)
{
SimpleDateFormat temp = new SimpleDateFormat(“yyyyMMdd”);
String curentDateandTime = temp.format(new Date());
String year = curentDateandTime.substring(0, 4);
String month = curentDateandTime.substring(4, 6);
String day = curentDateandTime.substring(6, 8);
Y = Integer.valueOf(year);
M = Integer.valueOf(month);
D = Integer.valueOf(day);
}
}
if (M < 3 || (M == 3 && D < 21))
Y = Y – 622;
else Y = Y – 621;
switch (M)
{
case 1: if (D < 21)
{
M = 10;
D = D + 10;
}
else
{
M = 11;
D = D – 20;
}
break;
case 2: if (D < 20)
{
M = 11;
D = D + 11;
}
else
{
M = 12;
D = D – 19;
}
break;
case 3:
if (D < 21)
{
M = 12;
D = D + 9;
}
else
{
M = 1;
D = D – 20;
}
break;
case 4:
if (D < 21)
{
M = 1;
D = D + 11;
}
else
{
M = 2; D = D – 20;
}
break;
case 5:
if (D < 22)
{
M = M – 3;
D = D + 10;
}
else
{
M = M – 2;
D = D – 21;
}
break;
case 6:
if (D < 22)
{
M = M – 3;
D = D + 10;
}
else
{
M = M – 2;
D = D – 21;
}
break;
case 7:
if (D < 23)
{
M = M – 3;
D = D + 9;
}
else
{
M = M – 2;
D = D – 22;
}
break;
case 8:
if (D < 23)
{
M = M – 3;
D = D + 9;
}
else
{
M = M – 2;
D = D – 22;
}
break;
case 9:
if (D < 23)
{
M = M – 3;
D = D + 9;
}
else
{
M = M – 2;
D = D – 22;
}
break;
case 10:
if (D < 23)
{
M = 7;
D = D + 8;
}
else
{
M = 8;
D = D – 22;
}
break;
case 11:
if (D < 22)
{
M = M – 3;
D = D + 9;
}
else
{
M = M – 2;
D = D – 21;
}
break;
case 12:
if (D < 22)
{
M = M – 3;
D = D + 9;
}
else
{
M = M – 2;
D = D – 21;
}
break;
}
String month = “00″;
String day = “00″;
D = Integer.valueOf(D)+1;
if (M < 10)
{
month = “0″ + M;
}
else
{
month = String.valueOf(M);
}
if (D < 10)
{
day = “0″ + D;
}
else
{
day = String.valueOf(D);
}
return String.valueOf(Y) + “/” + month + “/” + day;
}
}