前些天在网上找阳历转农历的源码找了好久都找不到，但是幸运的是找到了李宁老师《Android/OPhone开发完全讲义》日历的源码

，但是可惜的是源码中农历的部分没有了。。

于是在网上找了个Java类的阳历转农历的类Lunar.java。

下面开始实现这功能。

Lunar.java类：

public class Lunar {

private int year;

private int month;

private int day;

private boolean leap;

final static String chineseNumber[] = {"一", "二", "三", "四", "五","六", "七", "八", "九", "十", "十一", "十二"};

static SimpleDateFormat chineseDateFormat = newSimpleDateFormat("yyyy年MM月dd日");

final static long[] lunarInfo = new long[]

{0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554,0x056a0, 0x09ad0, 0x055d2,

0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0,0x0ada2, 0x095b0, 0x14977,

0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60,0x09570, 0x052f2, 0x04970,

0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3,0x092e0, 0x1c8d7, 0x0c950,

0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0,0x0d2b2, 0x0a950, 0x0b557,

0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5d0, 0x14573, 0x052d0,0x0a9a8, 0x0e950, 0x06aa0,

0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263,0x0d950, 0x05b57, 0x056a0,

0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558,0x0b540, 0x0b5a0, 0x195a6,

0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40,0x0af46, 0x0ab60, 0x09570,

0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0,0x0ab60, 0x096d5, 0x092e0,

0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7,0x025d0, 0x092d0, 0x0cab5,

0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0,0x15176, 0x052b0, 0x0a930,

0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0,0x0d260, 0x0ea65, 0x0d530,

0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0, 0x1d0b6,0x0d250, 0x0d520, 0x0dd45,

0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50,0x1b255, 0x06d20, 0x0ada0};

//====== 传回农历 y年的总天数

final private static int yearDays(int y) {

int i, sum = 348;

for (i = 0x8000; i > 0x8; i>>= 1) {

if ((lunarInfo[y - 1900] & i) != 0) sum += 1;

}

return (sum + leapDays(y));

}

//====== 传回农历 y年闰月的天数

final private static int leapDays(int y) {

if (leapMonth(y) != 0) {

if ((lunarInfo[y - 1900] & 0x10000) != 0)

return 30;

else

return 29;

} else

return 0;

}

//====== 传回农历 y年闰哪个月 1-12 , 没闰传回 0

final private static int leapMonth(int y) {

return (int) (lunarInfo[y - 1900] & 0xf);

}

//====== 传回农历 y年m月的总天数

final private static int monthDays(int y, int m) {

if ((lunarInfo[y - 1900] & (0x10000>> m)) == 0)

return 29;

else

return 30;

}

//====== 传回农历 y年的生肖

final public String animalsYear() {

final String[] Animals = new String[]{"鼠", "牛", "虎", "兔", "龙", "蛇","马", "羊", "猴", "鸡", "狗", "猪"};

return Animals[(year - 4) % 12];

}

//====== 传入 月日的offset 传回干支, 0=甲子

final private static String cyclicalm(int num) {

final String[] Gan = new String[]{"甲", "乙", "丙", "丁", "戊", "己","庚", "辛", "壬", "癸"};

final String[] Zhi = new String[]{"子", "丑", "寅", "卯", "辰", "巳","午", "未", "申", "酉", "戌", "亥"};

return (Gan[num % 10] + Zhi[num % 12]);

}

//====== 传入 offset 传回干支, 0=甲子

final public String cyclical() {

int num = year - 1900 + 36;

return (cyclicalm(num));

}

public String getLunarMonthString() {

// TODO Auto-generated method stub

return null;

}

public Lunar(Calendar cal) {

@SuppressWarnings("unused") int yearCyl, monCyl, dayCyl;

int leapMonth = 0;

Date baseDate = null;

try {

baseDate = chineseDateFormat.parse("1900年1月31日");

} catch (ParseException e) {

e.printStackTrace(); //To change body of catch statement useOptions | File Templates.

}

//求出和1900年1月31日相差的天数

int offset = (int) ((cal.getTime().getTime() - baseDate.getTime())/ 86400000L);

dayCyl = offset + 40;

monCyl = 14;

//用offset减去每农历年的天数

// 计算当天是农历第几天

//i最终结果是农历的年份

//offset是当年的第几天

int iYear, daysOfYear = 0;

for (iYear = 1900; iYear < 2050&& offset > 0;iYear++) {

daysOfYear = yearDays(iYear);

offset -= daysOfYear;

monCyl += 12;

}

if (offset < 0) {

offset += daysOfYear;

iYear--;

monCyl -= 12;

}

//农历年份

year = iYear;

yearCyl = iYear - 1864;

leapMonth = leapMonth(iYear); //闰哪个月,1-12

leap = false;

//用当年的天数offset,逐个减去每月(农历)的天数，求出当天是本月的第几天

int iMonth, daysOfMonth = 0;

for (iMonth = 1; iMonth < 13&& offset > 0;iMonth++) {

//闰月

if (leapMonth > 0 &&iMonth == (leapMonth + 1) && !leap){

--iMonth;

leap = true;

daysOfMonth = leapDays(year);

} else

daysOfMonth = monthDays(year, iMonth);

offset -= daysOfMonth;

//解除闰月

if (leap && iMonth == (leapMonth +1)) leap = false;

if (!leap) monCyl++;

}

//offset为0时，并且刚才计算的月份是闰月，要校正

if (offset == 0 && leapMonth> 0 && iMonth ==leapMonth + 1) {

if (leap) {

leap = false;

} else {

leap = true;

--iMonth;

--monCyl;

}

}

//offset小于0时，也要校正

if (offset < 0) {

offset += daysOfMonth;

--iMonth;

--monCyl;

}

month = iMonth;

day = offset + 1;

}

public static String getChinaDayString(int day) {

String chineseTen[] = {"初", "十", "廿", "三"};

int n = day % 10 == 0 ? 9 : day % 10 - 1;

if (day > 30)

return "";

if (day == 10)

return "初十";

else

return chineseTen[day / 10] + chineseNumber[n];

}

public String toString() {

return year + "年" + (leap ? "闰" : "") + chineseNumber[month - 1] +"月" + getChinaDayString(day);

}

}

(1)打印一个农历信息在TextView上

在Grid类的updateMsg方法添加以下代码：

Lunar lunar = new Lunar(calendar);

String lunarStr = "";

lunarStr=lunar.animalsYear()+"年(";

lunarStr +=lunar.cyclical()+"年)";

lunarStr +=lunar.toString();

tvMsg3.setText(lunarStr);这样就能实现了，很简单吧！

(2)全部日期都显示农历信息，效果图如下：

同样在Grid类里的draw(Cavas cavas)方法中

在for (int i = 0; i < days.length;i++)循环前面添加以下代码：

calendar.set(currentYear, currentMonth, currentDay);

SimpleDateFormat abc = new SimpleDateFormat("yyyy年MM月dd日");在for (int i = 0; i < days.length;i++)循环里添加以下代码：

if (days[i].startsWith("*"))

{

// 下月

if (i > 20)

{

String nowday = currentYear + "年" + (currentMonth+2) + "月" + myText+ "日";

java.util.Calendar currentDay =java.util.Calendar.getInstance();

try {

//定义传入ChineseCalendar参数的格式

currentDay.setTime(abc.parse(nowday));

// System.out.println("currentDay:"+currentDay);

} catch (ParseException e) {

e.printStackTrace();

}

Lunar lunar = new Lunar(currentDay);

String currentDate = lunar.toString();

int startIndex = currentDate.length()-2;

//获取农历月份

String showMonth = currentDate.substring(startIndex-2,startIndex);

//获取农历的日

String showDay = currentDate.substring(startIndex);

//当农历的日为“初一时”，画出该天的月份

//否则画出该天农历的日

if (showDay.equals("初一")) {

canvas.drawText(showMonth, textLeft1, textTop1, paint);

} else {

canvas.drawText(showDay, textLeft1, textTop1, paint);

}

}

// 上月

else

{

String nowday = currentYear + "年" + (currentMonth) + "月" + myText +"日";

java.util.Calendar currentDay =java.util.Calendar.getInstance();

try {

//定义传入ChineseCalendar参数的格式

currentDay.setTime(abc.parse(nowday));

// System.out.println("currentDay:"+currentDay);

} catch (ParseException e) {

e.printStackTrace();

}

Lunar lunar = new Lunar(currentDay);

String currentDate = lunar.toString();

int startIndex = currentDate.length()-2;

//获取农历月份

String showMonth = currentDate.substring(startIndex-2,startIndex);

//获取农历的日

String showDay = currentDate.substring(startIndex);

//当农历的日为“初一时”，画出该天的月份

//否则画出该天农历的日

if (showDay.equals("初一")) {

canvas.drawText(showMonth, textLeft1, textTop1, paint);

} else {

canvas.drawText(showDay, textLeft1, textTop1, paint);

}

}

}else{

String nowday = currentYear + "年" + (currentMonth+1) + "月" + myText+ "日";

java.util.Calendar currentDay =java.util.Calendar.getInstance();

try {

//定义传入ChineseCalendar参数的格式

currentDay.setTime(abc.parse(nowday));

// System.out.println("currentDay:"+currentDay);

} catch (ParseException e) {

e.printStackTrace();

}

Lunar lunar = new Lunar(currentDay);

String currentDate = lunar.toString();

int startIndex = currentDate.length()-2;

//获取农历月份

String showMonth = currentDate.substring(startIndex-2,startIndex);

//获取农历的日

String showDay = currentDate.substring(startIndex);

//当农历的日为“初一时”，画出该天的月份

//否则画出该天农历的日

if (showDay.equals("初一")) {

canvas.drawText(showMonth, textLeft1, textTop1, paint);

} else {

canvas.drawText(showDay, textLeft1, textTop1, paint);

}

}

canvas.drawText(myText, textLeft, textTop, paint);