Android Calendar的工具类
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* 2、获取Date偏移之后的Date getDateByOffset(date,Calendar.DATE,1); * 3、获取字符串日期时间的字符串(可偏移) getStringByOffset("2016-04-15 12:20:11","yyyy-MM-dd HH:mm:ss",Calendar.DATE,1); * 4、Date类型转化为String类型(可偏移) getStringByOffset(date,"yyyy-MM-dd HH:mm:ss",Calendar.DATE,1); * 5、Date类型转化为String类型 getStringByFormat((date,"yyyy-MM-dd HH:mm:ss"); * 6、获取指定日期时间的字符串,用于导出想要的格式 getStringByFormat("2016-04-15 12:20:11","yyyy-MM-dd HH:mm:ss"); * 7、获取milliseconds表示的日期时间的字符串 getStringByFormat(1470816365,"yyyy-MM-dd HH:mm:ss"); * 8、获取表示当前日期时间的字符串 getCurrentDate("yyyy-MM-dd HH:mm:ss"); * 9、计算两个日期所差的天数 getOffectDay(1470816365,1470816415); or getOffectDay(startDate,endDate) * 10、计算两个日期所差的小时数 getOffectHour(1470816365,1470816415); * 11、计算两个日期所差的分钟数 getOffectMinutes(1470816365,1470816415); * 12、获取本周一 getFirstDayOfWeek("2016-04-15 12:20:11"); * 13、获取本周日 getLastDayOfWeek("2016-04-15 12:20:11"); * 14、获取本周的某一天 getDayOfWeek("2016-04-15 12:20:11",Calendar.DATE); * 15、获取本月第一天 getFirstDayOfMonth("2016-04-15 12:20:11"); * 16、获取本月最后一天 getLastDayOfMonth("2016-04-15 12:20:11"); * 17、获取表示当前日期的0点时间毫秒数 getFirstTimeOfDay(); * 18、获取表示当前日期24点时间毫秒数 getLastTimeOfDay(); * 19、判断是否是闰年 isLeapYear(2014); * 20、根据时间返回格式化后的时间的描述 formatDateStr2Desc2("2016-04-15 12:20:11","yyyy-MM-dd HH:mm:ss"); * 21、以友好的方式显示时间 formatDateStr2Desc("2016-04-15 12:20:11","yyyy-MM-dd HH:mm:ss"); * 22、取指定日期为星期几 getWeekNumber("2016-04-15 12:20:11","yyyy-MM-dd HH:mm:ss"); * 23、根据给定的日期判断是否为上下午 getTimeQuantum("2016-04-15 12:20:11","yyyy-MM-dd HH:mm:ss"); * 24、根据给定的毫秒数算得时间的描述 getTimeDescription(1470816365); * 25、将Calendar转成字符串 calendarConvertString(calendar,"yyyy-MM-dd HH:mm:ss"); * 26、将字符串转成Calendar stringConvertCalendar("2016-04-15 12:20:11","yyyy-MM-dd HH:mm:ss"); * 27、比较2个时间的大小 calendarCompare(calendar1,calendar2); * 28、得到当前时间的随机数 getCurRandomDate(); * 29、某年某月有多少天 getDaysInMonth(2016,5); * 30、某年某月的第一天是周几 getFirstWeekDayInMonth(2016,5); * 31、得到2个时间戳之间相差的 天 时 分 秒 getDate(1470816365,1470816415); * 32、阳历节日 calendarFestival(calendar); * 33、阴历节日 lunarHoliday(calendar); * Created by slantech on 2018/04/28 13:40 */ public class CalendarTool { /** * 时间日期格式化到年月日时分秒. */ public static final String dateFormatYMDHMS = "yyyy-MM-dd HH:mm:ss" ; public static final String dateFormatYMDHMSSSS = "yyyy-MM-dd HH:mm:ss:SSS" ; /** * 时间日期格式化到年月日. */ public static final String dateFormatYMD = "yyyy-MM-dd" ; /** * 时间日期格式化到年月. */ public static final String dateFormatYM = "yyyy-MM" ; /** * 时间日期格式化到年. */ public static final String dateFormatY = "yyyy" ; /** * 时间日期格式化到年月日时分. */ public static final String dateFormatYMDHM = "yyyy-MM-dd HH:mm" ; /** * 时间日期格式化到月日. */ public static final String dateFormatMD = "MM/dd" ; /** * 时分秒. */ public static final String dateFormatHMS = "HH:mm:ss" ; /** * 时分. */ public static final String dateFormatHM = "HH:mm" ; /** * 上午. */ public static final String AM = "AM" ; /** * 下午. */ public static final String PM = "PM" ; static final String[] solarTerms = { "立春" , "雨水" , "惊蛰" , "春分" , "清明" , "谷雨" , "立夏" , "小满" , "芒种" , "夏至" , "小暑" , "大暑" , "立秋" , "处暑" , "白露" , "秋分" , "寒露" , "霜降" , "立冬" , "小雪" , "大雪" , "冬至" , "小寒" , "大寒" }; static final int [][] solarTermsDays = {{ 2 , 4 }, { 2 , 19 }, { 3 , 6 }, { 3 , 21 }, { 4 , 5 }, { 4 , 20 }, { 5 , 6 }, { 5 , 21 }, { 6 , 6 }, { 6 , 21 }, { 7 , 7 }, { 7 , 23 }, { 8 , 8 }, { 8 , 23 }, { 9 , 8 }, { 9 , 23 }, { 10 , 8 }, { 10 , 23 }, { 11 , 7 }, { 11 , 22 }, { 12 , 7 }, { 12 , 22 }, { 1 , 6 }, { 1 , 20 }}; static final String[] festivals = { "元旦" , "情人" , "女生" , "妇女" , "植树" , "愚人" , "劳动" , "青年" , "儿童" , "建军" , "教师" , "国庆" , "万圣" , "光棍" , "平安" , "圣诞" }; static final int [][] festivalsDays = {{ 1 , 1 }, { 2 , 14 }, { 3 , 7 }, { 3 , 8 }, { 3 , 12 }, { 4 , 1 }, { 5 , 1 }, { 5 , 4 }, { 6 , 1 }, { 8 , 1 }, { 9 , 10 }, { 10 , 1 }, { 10 , 31 }, { 11 , 11 }, { 12 , 24 }, { 12 , 25 }}; static final String[] chineseFestivals = { "春节" , "元宵" , "花朝" , "上巳节" , "端午" , "七夕" , "中元" , "中秋" , "重阳" , "祭祖" , "下元" , "腊八" }; static final int [][] chineseFestivalsDays = {{ 1 , 1 }, { 1 , 15 }, { 2 , 12 }, { 3 , 3 }, { 5 , 5 }, { 7 , 7 }, { 7 , 15 }, { 8 , 15 }, { 9 , 9 }, { 10 , 1 }, { 10 , 15 }, { 12 , 8 }}; /** * 是否是大于当前日期 以天判断 * * @param day * @return */ public static boolean isFutureOfDay(String day) { Calendar calendar = Calendar.getInstance(); calendar.setTime(getDateByFormat(day, "yyyy-MM-dd" )); Calendar current = Calendar.getInstance(); current.setTime(getDateByFormat(getCurrentDate( "yyyy-MM-dd" ), "yyyy-MM-dd" )); return calendar.getTimeInMillis() - current.getTimeInMillis() >= 0 ; } /** * 是否是大于当前日期的天数 以天判断 * * @param day * @return */ public static boolean isFutureOfDay(String day, int fday) { Calendar calendar = Calendar.getInstance(); calendar.setTime(getDateByFormat(day, "yyyy-MM-dd" )); Calendar current = Calendar.getInstance(); current.setTime(getDateByFormat(getCurrentDate( "yyyy-MM-dd" ), "yyyy-MM-dd" )); long size = calendar.getTimeInMillis() - current.getTimeInMillis(); return size >= fday * 24 * 60 * 60 * 1000 ; } /** * 判断时间是否超过当前时间 * * @return */ public static boolean DateIsCurrent(String time) { boolean is = false ; SimpleDateFormat sdf = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss" ); Date date = null ; try { date = sdf.parse(time); } catch (ParseException e) { ULogger.e(e); } Calendar calendar = Calendar.getInstance(); calendar.setTime(date); is = calendar.getTimeInMillis() > System.currentTimeMillis(); return is; } /** * String 类型转化为long类型 * * @param date * @return */ public static long getStringToLongDate(String date) { Calendar c = Calendar.getInstance(); c.setTime(getDateByFormat(date, "yyyy-MM-dd" )); return c.getTimeInMillis(); } /** * String 类型转化为long类型 * * @param date * @param format * @return */ public static long getStringToLongDate(String date, String format) { Calendar c = Calendar.getInstance(); c.setTime(getDateByFormat(date, format)); return c.getTimeInMillis(); } /** * String类型的日期时间转化为Date类型. * * @param strDate String形式的日期时间 * @param format 格式化字符串,如:"yyyy-MM-dd HH:mm:ss" * @return Date Date类型日期时间 */ public static Date getDateByFormat(String strDate, String format) { SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); Date date = null ; try { date = mSimpleDateFormat.parse(strDate); } catch (ParseException e) { e.printStackTrace(); } return date; } /** * 获取Date偏移之后的Date. * * @param date 日期时间 * @param calendarField Calendar属性,对应offset的值, 如(Calendar.DATE,表示+offset天,Calendar.HOUR_OF_DAY,表示+offset小时) * @param offset 偏移(值大于0,表示+,值小于0,表示-) * @return Date 偏移之后的日期时间 */ public Date getDateByOffset(Date date, int calendarField, int offset) { Calendar c = new GregorianCalendar(); try { c.setTime(date); c.add(calendarField, offset); } catch (Exception e) { e.printStackTrace(); } return c.getTime(); } /** * 获取字符串日期时间的字符串(可偏移). * * @param strDate String形式的日期时间 * @param format 格式化字符串,如:"yyyy-MM-dd HH:mm:ss" * @param calendarField Calendar属性,对应offset的值, * 如(Calendar.DATE,表示+offset天,Calendar.HOUR_OF_DAY,表示+offset小时) * @param offset 偏移(值大于0,表示+,值小于0,表示-) * @return String String类型的日期时间 */ public static String getStringByOffset(String strDate, String format, int calendarField, int offset) { String mDateTime = null ; try { Calendar c = new GregorianCalendar(); SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); c.setTime(mSimpleDateFormat.parse(strDate)); c.add(calendarField, offset); mDateTime = mSimpleDateFormat.format(c.getTime()); } catch (ParseException e) { e.printStackTrace(); } return mDateTime; } /** * Date类型转化为String类型(可偏移). * * @param date the date * @param format the format * @param calendarField the calendar field * @param offset the offset * @return String String类型日期时间 */ public static String getStringByOffset(Date date, String format, int calendarField, int offset) { String strDate = null ; try { Calendar c = new GregorianCalendar(); SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); c.setTime(date); c.add(calendarField, offset); strDate = mSimpleDateFormat.format(c.getTime()); } catch (Exception e) { e.printStackTrace(); } return strDate; } /** * @param str * @param format * @return */ public static Date getStringToDate(String str, String format) { SimpleDateFormat sdf = new SimpleDateFormat(format); try { return sdf.parse(str); } catch (ParseException e) { e.printStackTrace(); } return new Date(); } /** * Date类型转化为String类型. * * @param date the date * @param format the format * @return String String类型日期时间 */ public static String getStringByFormat(Date date, String format) { SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); String strDate = "" ; try { strDate = mSimpleDateFormat.format(date); } catch (Exception e) { e.printStackTrace(); } return strDate; } /** * 获取指定日期时间的字符串,用于导出想要的格式. * * @param strDate String形式的日期时间,必须为yyyy-MM-dd HH:mm:ss格式 * @param format 输出格式化字符串,如:"yyyy-MM-dd HH:mm:ss" * @return String 转换后的String类型的日期时间 */ public static String getStringByFormat(String strDate, String format) { if (TextUtils.isEmpty(strDate)) return "" ; String mDateTime = "" ; try { Calendar c = new GregorianCalendar(); SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); c.setTime(mSimpleDateFormat.parse(strDate)); SimpleDateFormat mSimpleDateFormat2 = new SimpleDateFormat(format); mDateTime = mSimpleDateFormat2.format(c.getTime()); } catch (Exception e) { try { SimpleDateFormat sdf = new SimpleDateFormat( "MMM d, yyyy K:m:s a" , Locale.ENGLISH); Date d2 = sdf.parse(strDate); return getStringByFormat(d2, format); } catch (Exception e1) { Long l = Long.parseLong(strDate); return getStringByFormat(l, format); } } return mDateTime; } /** * 获取milliseconds表示的日期时间的字符串. * * @param milliseconds the milliseconds * @param format 格式化字符串,如:"yyyy-MM-dd HH:mm:ss" * @return String 日期时间字符串 */ public static String getStringByFormat( long milliseconds, String format) { String thisDateTime = "" ; try { SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); thisDateTime = mSimpleDateFormat.format(milliseconds); } catch (Exception e) { e.printStackTrace(); } return thisDateTime; } /** * 获取表示当前日期时间的字符串. * * @param format 格式化字符串,如:"yyyy-MM-dd HH:mm:ss" * @return String String类型的当前日期时间 */ public static String getCurrentDate(String format) { String curDateTime = null ; try { SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); Calendar c = new GregorianCalendar(); curDateTime = mSimpleDateFormat.format(c.getTime()); } catch (Exception e) { e.printStackTrace(); } return curDateTime; } /** * 获取表示当前日期时间的字符串(可偏移). * * @param format 格式化字符串,如:"yyyy-MM-dd HH:mm:ss" * @param calendarField Calendar属性,对应offset的值, 如(Calendar.DATE,表示+offset天,Calendar.HOUR_OF_DAY,表示+offset小时) * @param offset 偏移(值大于0,表示+,值小于0,表示-) * @return String String类型的日期时间 */ public static String getCurrentDateByOffset(String format, int calendarField, int offset) { String mDateTime = null ; try { SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); Calendar c = new GregorianCalendar(); c.add(calendarField, offset); mDateTime = mSimpleDateFormat.format(c.getTime()); } catch (Exception e) { e.printStackTrace(); } return mDateTime; } /** * 计算两个日期所差的天数. * * @param milliseconds1 the milliseconds1 big * @param milliseconds2 the milliseconds2 s * @return int 所差的天数 */ public static int getOffectDay( long milliseconds1, long milliseconds2) { Calendar calendar1 = Calendar.getInstance(); calendar1.setTimeInMillis(milliseconds1); Calendar calendar2 = Calendar.getInstance(); calendar2.setTimeInMillis(milliseconds2); //先判断是否同年 /*int y1 = calendar1.get(Calendar.YEAR); int y2 = calendar2.get(Calendar.YEAR); int d1 = calendar1.get(Calendar.DAY_OF_YEAR); int d2 = calendar2.get(Calendar.DAY_OF_YEAR); int maxDays = 0; int day = 0; if (y1 - y2 > 0) { maxDays = calendar2.getActualMaximum(Calendar.DAY_OF_YEAR); day = d1 - d2 + maxDays; } else if (y1 - y2 < 0) { maxDays = calendar1.getActualMaximum(Calendar.DAY_OF_YEAR); day = d1 - d2 - maxDays; } else { day = d1 - d2; }*/ return getOffectDay(calendar2.getTime(), calendar1.getTime()); } /** * 计算两个日期所差的天数. * * @param startDate startDate s * @param endDate endDate big * @return int 无正负情况 */ public static int getOffectDay(Date startDate, Date endDate) { Calendar fromCalendar = Calendar.getInstance(); fromCalendar.setTime(startDate); fromCalendar.set(Calendar.HOUR_OF_DAY, 0 ); fromCalendar.set(Calendar.MINUTE, 0 ); fromCalendar.set(Calendar.SECOND, 0 ); fromCalendar.set(Calendar.MILLISECOND, 0 ); Calendar toCalendar = Calendar.getInstance(); toCalendar.setTime(endDate); toCalendar.set(Calendar.HOUR_OF_DAY, 0 ); toCalendar.set(Calendar.MINUTE, 0 ); toCalendar.set(Calendar.SECOND, 0 ); toCalendar.set(Calendar.MILLISECOND, 0 ); long timec = toCalendar.getTime().getTime() - fromCalendar.getTime().getTime(); return ( int ) (timec / ( 1000 * 60 * 60 * 24 )); } /** * 计算两个日期所差的小时数. * * @param date1 第一个时间的毫秒表示 * @param date2 第二个时间的毫秒表示 * @return int 所差的小时数 */ public static int getOffectHour( long date1, long date2) { Calendar calendar1 = Calendar.getInstance(); calendar1.setTimeInMillis(date1); Calendar calendar2 = Calendar.getInstance(); calendar2.setTimeInMillis(date2); int h1 = calendar1.get(Calendar.HOUR_OF_DAY); int h2 = calendar2.get(Calendar.HOUR_OF_DAY); int h = 0 ; int day = getOffectDay(date1, date2); h = h1 - h2 + day * 24 ; return h; } /** * 计算两个日期所差的分钟数. * * @param date1 第一个时间的毫秒表示 * @param date2 第二个时间的毫秒表示 * @return int 所差的分钟数 */ public static int getOffectMinutes( long date1, long date2) { Calendar calendar1 = Calendar.getInstance(); calendar1.setTimeInMillis(date1); Calendar calendar2 = Calendar.getInstance(); calendar2.setTimeInMillis(date2); int m1 = calendar1.get(Calendar.MINUTE); int m2 = calendar2.get(Calendar.MINUTE); int h = getOffectHour(date1, date2); int m = 0 ; m = m1 - m2 + h * 60 ; return m; } /** * 获取本周一. * * @param format format * @return String String类型日期时间 */ public static String getFirstDayOfWeek(String format) { return getDayOfWeek(format, Calendar.MONDAY); } /** * 获取本周日. * * @param format the format * @return String String类型日期时间 */ public static String getLastDayOfWeek(String format) { return getDayOfWeek(format, Calendar.SUNDAY); } /** * 获取本周的某一天. * * @param format format * @param calendarField calendarField * @return String String类型日期时间 */ private static String getDayOfWeek(String format, int calendarField) { String strDate = null ; try { Calendar c = new GregorianCalendar(); SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); int week = c.get(Calendar.DAY_OF_WEEK); if (week == calendarField) { strDate = mSimpleDateFormat.format(c.getTime()); } else { int offectDay = calendarField - week; if (calendarField == Calendar.SUNDAY) { offectDay = 7 - Math.abs(offectDay); } c.add(Calendar.DATE, offectDay); strDate = mSimpleDateFormat.format(c.getTime()); } } catch (Exception e) { e.printStackTrace(); } return strDate; } /** * 获取当前时间和当前时间前30天时间 * * @return */ public static String[] getDateOfTodayTofirst() { String[] dates = new String[ 2 ]; Calendar calendar = Calendar.getInstance(); dates[ 1 ] = UtilsString.longToStringDate(calendar.getTimeInMillis(), dateFormatYMD); //今天 calendar.add(Calendar.MONTH, - 1 ); dates[ 0 ] = UtilsString.longToStringDate(calendar.getTimeInMillis(), dateFormatYMD); return dates; } /** * 获取本月第一天. * * @param format format * @return String String类型日期时间 */ public static String getFirstDayOfMonth(String format) { String strDate = null ; try { Calendar c = new GregorianCalendar(); SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); //当前月的第一天 c.set(GregorianCalendar.DAY_OF_MONTH, 1 ); strDate = mSimpleDateFormat.format(c.getTime()); } catch (Exception e) { e.printStackTrace(); } return strDate; } /** * 获取本月最后一天. * * @param format format * @return String String类型日期时间 */ public static String getLastDayOfMonth(String format) { String strDate = null ; try { Calendar c = new GregorianCalendar(); SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); // 当前月的最后一天 c.set(Calendar.DATE, 1 ); c.roll(Calendar.DATE, - 1 ); strDate = mSimpleDateFormat.format(c.getTime()); } catch (Exception e) { e.printStackTrace(); } return strDate; } /** * 获取表示当前日期的0点时间毫秒数. * * @return long the first time of day */ public static long getFirstTimeOfDay() { Date date = null ; try { String currentDate = getCurrentDate(dateFormatYMD); date = getDateByFormat(currentDate + " 00:00:00" , dateFormatYMDHMS); return date.getTime(); } catch (Exception e) { } return - 1 ; } /** * 获取传入日期的0点的时间毫秒 * * @param str * @return */ public static long getFirstTimeOfDay(String str) { Date date = null ; try { String currentDate = getStringByFormat(str, dateFormatYMD); date = getDateByFormat(currentDate + " 00:00:00" , dateFormatYMDHMS); return date.getTime(); } catch (Exception e) { } return - 1 ; } /** * 获取表示当前日期24点时间毫秒数. * * @return long the last time of day */ public static long getLastTimeOfDay() { Date date = null ; try { String currentDate = getCurrentDate(dateFormatYMD); date = getDateByFormat(currentDate + " 24:00:00" , dateFormatYMDHMS); return date.getTime(); } catch (Exception e) { } return - 1 ; } /** * 判断是否是闰年()(year能被4整除 并且 不能被100整除) 或者 year能被400整除,则该年为闰年. * * @param year 年代(如2012) * @return boolean 是否为闰年 */ public static boolean isLeapYear( int year) { if ((year % 4 == 0 && year % 400 != 0 ) || year % 400 == 0 ) { return true ; } else { return false ; } } /** * 以友好的方式显示时间 * * @param sdate sdate * @param outFormat outFormat * @return String */ public static String formatDateStr2Desc(String sdate, String outFormat) { try { if (!TextUtils.isEmpty(sdate) && (sdate.length() == 10 || sdate.length() == 9 || sdate.length() == 8 )) { sdate = sdate + " 00:00" ; } Date time = getDateByFormat(sdate, dateFormatYMDHM); String ftime = "" ; Calendar cal = Calendar.getInstance(); // 判断是否是同一天 String curDate = getCurrentDate(dateFormatYMDHM); String paramDate = getStringByFormat(time, dateFormatYMDHM); if (curDate.equals(paramDate)) { int hour = ( int ) ((cal.getTimeInMillis() - time.getTime()) / 3600000 ); if (hour == 0 ) ftime = Math.max( (cal.getTimeInMillis() - time.getTime()) / 60000 , 1 ) + "分钟前" ; else ftime = hour + "小时前" ; return ftime; } long lt = time.getTime() / 86400000 ; long ct = cal.getTimeInMillis() / 86400000 ; int days = ( int ) (ct - lt); if (days == 0 ) { int hour = ( int ) ((cal.getTimeInMillis() - time.getTime()) / 3600000 ); if (hour == 0 ) ftime = Math.max( (cal.getTimeInMillis() - time.getTime()) / 60000 , 1 ) + "分钟前" ; else ftime = hour + "小时前" ; } else if (days == 1 ) { ftime = "昨天" ; } else if (days == 2 ) { ftime = "前天 " ; } else if (days > 2 && days < 31 ) { ftime = days + "天前" ; } else if (days >= 31 && days <= 2 * 31 ) { ftime = "一个月前" ; } else if (days > 2 * 31 && days <= 3 * 31 ) { ftime = "2个月前" ; } else if (days > 3 * 31 && days <= 4 * 31 ) { ftime = "3个月前" ; } else { ftime = getStringByFormat(time, outFormat); } return ftime; } catch (Exception e) { return "" ; } } /** * 取指定日期为星期几. * * @param strDate 指定日期 * @param inFormat 指定日期格式 * @return String 星期几 */ public static String getWeekNumber(String strDate, String inFormat) { String week = "星期日" ; Calendar calendar = new GregorianCalendar(); DateFormat df = new SimpleDateFormat(inFormat); try { calendar.setTime(df.parse(strDate)); } catch (Exception e) { return "错误" ; } int intTemp = calendar.get(Calendar.DAY_OF_WEEK) - 1 ; switch (intTemp) { case 0 : week = "星期日" ; break ; case 1 : week = "星期一" ; break ; case 2 : week = "星期二" ; break ; case 3 : week = "星期三" ; break ; case 4 : week = "星期四" ; break ; case 5 : week = "星期五" ; break ; case 6 : week = "星期六" ; break ; default : break ; } return week; } /** * 根据给定的日期判断是否为上下午. * * @param strDate strDate * @param format format * @return the time quantum */ public static String getTimeQuantum(String strDate, String format) { Date mDate = getDateByFormat(strDate, format); int hour = mDate.getHours(); if (hour >= 12 ) return "PM" ; else return "AM" ; } /** * 根据给定的毫秒数算得时间的描述. * * @param milliseconds the milliseconds * @return the time description */ public static String getTimeDescription( long milliseconds) { if (milliseconds > 1000 ) { //大于一分 if (milliseconds / 1000 / 60 > 1 ) { long minute = milliseconds / 1000 / 60 ; long second = milliseconds / 1000 % 60 ; return minute + "分" + second + "秒" ; } else { //显示秒 return milliseconds / 1000 + "秒" ; } } else { return milliseconds + "毫秒" ; } } /** * 将Calendar转成字符串 * * @param calendar calendar * @param format 指定格式 * @return String */ public static String calendarConvertString(Calendar calendar, String format) { try { SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format); return simpleDateFormat.format(calendar.getTime()); } catch (Exception ex) { ex.printStackTrace(); } return null ; } /** * 将字符串转成Calendar * * @param times times * @param format 指定格式 * @return Calendar */ public static Calendar stringConvertCalendar(String times, String format) { try { SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format); Date date = simpleDateFormat.parse(times); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); return calendar; } catch (Exception ex) { ex.printStackTrace(); } return null ; } /*** * 比较2个时间的大小 * * @param one one * @param two two * @return int ==0相等 >0one大于two <0one小于two */ public static int calendarCompare(Calendar one, Calendar two) { int num = - 1 ; try { num = one.compareTo(two); } catch (Exception ex) { ex.printStackTrace(); } return num; } /** * 得到当前时间的随机数 * * @return String */ public static String getCurRandomDate() { Calendar calendar = Calendar.getInstance(); String curTimes = calendar.get(Calendar.YEAR) + "" + (calendar.get(Calendar.MONTH) + 1 ) + "" + calendar.get(Calendar.DAY_OF_MONTH) + "" + calendar.get(Calendar.HOUR_OF_DAY) + "" + calendar.get(Calendar.MINUTE) + "" + calendar.get(Calendar.SECOND) + "" + calendar.get(Calendar.MILLISECOND); return curTimes; } /** * 某年某月有多少天 * * @param year year * @param month month * @return int */ public static int getDaysInMonth( int year, int month) { Calendar c = Calendar.getInstance(); c.set(Calendar.YEAR, year); c.set(Calendar.MONTH, month - 1 ); return c.getActualMaximum(Calendar.DAY_OF_MONTH); } /** * 某年某月的第一天是周几 * * @param year year * @param month month * @return int */ public static int getFirstWeekDayInMonth( int year, int month) { Calendar c = Calendar.getInstance(); c.set(Calendar.YEAR, year); c.set(Calendar.MONTH, month - 1 ); c.set(Calendar.DAY_OF_MONTH, 1 ); return c.get(Calendar.DAY_OF_WEEK) - 1 ; } /** * 得到2个时间戳之间相差的 天 时 分 秒 * * @param date1 date1 * @param date2 date2 * @return long[] */ public static long [] getDate( long date1, long date2) { long [] times = new long []{ 0 , 0 , 0 , 0 }; try { SimpleDateFormat dfs = new SimpleDateFormat(dateFormatYMDHMS); Date begin = dfs.parse(getStringByFormat(date1, dateFormatYMDHMS)); Date end = dfs.parse(getStringByFormat(date2, dateFormatYMDHMS)); long between = (end.getTime() - begin.getTime()) / 1000 ; //除以1000是为了转换成秒 long day1 = between / ( 24 * 3600 ); long hour1 = between % ( 24 * 3600 ) / 3600 ; long minute1 = between % 3600 / 60 ; long second1 = between % 60 / 60 ; times[ 0 ] = day1; times[ 1 ] = hour1; times[ 2 ] = minute1; times[ 3 ] = second1; } catch (Exception ex) { } return times; } } |
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