public class TimeUtil { //获取当天的开始时间 public static Date getDayBegin() { Calendar cal = new GregorianCalendar(); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return cal.getTime(); } //获取当天的结束时间 public static Date getDayEnd() { Calendar cal = new GregorianCalendar(); cal.set(Calendar.HOUR_OF_DAY, 23); cal.set(Calendar.MINUTE, 59); cal.set(Calendar.SECOND, 59); return cal.getTime(); } //获取昨天的开始时间 public static Date getBeginDayOfYesterday() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayBegin()); cal.add(Calendar.DAY_OF_MONTH, -1); return cal.getTime(); } //获取昨天的结束时间 public static Date getEndDayOfYesterDay() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayEnd()); cal.add(Calendar.DAY_OF_MONTH, -1); return cal.getTime(); } //获取明天的开始时间 public static Date getBeginDayOfTomorrow() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayBegin()); cal.add(Calendar.DAY_OF_MONTH, 1); return cal.getTime(); } //获取明天的结束时间 public static Date getEndDayOfTomorrow() { Calendar cal = new GregorianCalendar(); cal.setTime(getDayEnd()); cal.add(Calendar.DAY_OF_MONTH, 1); return cal.getTime(); } //获取本周的开始时间 public static Date getBeginDayOfWeek() { Calendar cal = Calendar.getInstance(); cal.setFirstDayOfWeek(Calendar.MONDAY); cal.setTimeInMillis(System.currentTimeMillis()); cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); return getDayStartTime(cal.getTime()); } //获取本周的结束时间 public static Date getEndDayOfWeek() { Calendar cal = Calendar.getInstance(); cal.setFirstDayOfWeek(Calendar.MONDAY); cal.setTimeInMillis(System.currentTimeMillis()); cal.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY); return getDayEndTime(cal.getTime()); } //获取本月的开始时间 public static Date getBeginDayOfMonth() { Calendar calendar = Calendar.getInstance(); calendar.set(getNowYear(), getNowMonth() - 1, 1); return getDayStartTime(calendar.getTime()); } /** * 获取本月的结束时间 * * @return */ public static Date getEndDayOfMonth() { Calendar calendar = Calendar.getInstance(); calendar.set(getNowYear(), getNowMonth() - 1, 1); int day = calendar.getActualMaximum(5); calendar.set(getNowYear(), getNowMonth() - 1, day); return getDayEndTime(calendar.getTime()); } /** * 获取本月的前三个月 * * @return */ public static Date getBeginDayOfMonth3() { Calendar calendar = Calendar.getInstance(); calendar.add(calendar.MONTH, -3); Date dateTemp = calendar.getTime(); calendar.set(getYear(dateTemp), getMonth(dateTemp), 1); return getDayStartTime(calendar.getTime()); } /** * 获取本月的当前日期 * * @return */ public static Date getEndDayOfMonth3() { // Calendar calendar = Calendar.getInstance(); // int day = calendar.get(Calendar.DAY_OF_MONTH); // calendar.set(getNowYear(), getNowMonth() - 1, day); // return getDayEndTime(calendar.getTime()); return getEndDayOfMonth(); } //获取本年的开始时间 public static java.util.Date getBeginDayOfYear() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, getNowYear()); // cal.set cal.set(Calendar.MONTH, Calendar.JANUARY); cal.set(Calendar.DATE, 1); return getDayStartTime(cal.getTime()); } //获取本年的结束时间 public static java.util.Date getEndDayOfYear() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, getNowYear()); cal.set(Calendar.MONTH, Calendar.DECEMBER); cal.set(Calendar.DATE, 31); return getDayEndTime(cal.getTime()); } //获取某个日期的开始时间 public static Timestamp getDayStartTime(Date d) { Calendar calendar = Calendar.getInstance(); if (null != d) calendar.setTime(d); calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0); calendar.set(Calendar.MILLISECOND, 0); return new Timestamp(calendar.getTimeInMillis()); } //获取某个日期的结束时间 public static Timestamp getDayEndTime(Date d) { Calendar calendar = Calendar.getInstance(); if (null != d) calendar.setTime(d); calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 59); calendar.set(Calendar.MILLISECOND, 999); return new Timestamp(calendar.getTimeInMillis()); } /** * 获取今年是哪一年 * * @return */ public static Integer getNowYear() { Date date = new Date(); GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance(); gc.setTime(date); return Integer.valueOf(gc.get(1)); } /** * 获取本月是哪一月 * * @return */ public static int getNowMonth() { Date date = new Date(); GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance(); gc.setTime(date); return gc.get(2) + 1; } /** * 两个日期相减得到的天数 * * @return */ public static int getDiffDays(Date beginDate, Date endDate) { if (beginDate == null || endDate == null) { throw new IllegalArgumentException("getDiffDays param is null!"); } long diff = (endDate.getTime() - beginDate.getTime()) / (1000 * 60 * 60 * 24); int days = new Long(diff).intValue(); return days; } /** * 两个日期相减得到的毫秒数 * * @param beginDate * @param endDate * @return */ public static long dateDiff(Date beginDate, Date endDate) { long date1ms = beginDate.getTime(); long date2ms = endDate.getTime(); return date2ms - date1ms; } /** * 获取两个日期中的最大日期 * * @param beginDate * @param endDate * @return */ public static Date max(Date beginDate, Date endDate) { if (beginDate == null) { return endDate; } if (endDate == null) { return beginDate; } if (beginDate.after(endDate)) { return beginDate; } return endDate; } //获取两个日期中的最小日期 public static Date min(Date beginDate, Date endDate) { if (beginDate == null) { return endDate; } if (endDate == null) { return beginDate; } if (beginDate.after(endDate)) { return endDate; } return beginDate; } //返回某月该季度的第一个月 public static Date getFirstSeasonDate(Date date) { final int[] SEASON = {1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4}; Calendar cal = Calendar.getInstance(); cal.setTime(date); int sean = SEASON[cal.get(Calendar.MONTH)]; cal.set(Calendar.MONTH, sean * 3 - 3); return cal.getTime(); } //返回某个日期下几天的日期 public static Date getNextDay(Date date, int i) { Calendar cal = new GregorianCalendar(); cal.setTime(date); cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i); return cal.getTime(); } //返回某个日期前几天的日期 public static Date getFrontDay(Date date, int i) { Calendar cal = new GregorianCalendar(); cal.setTime(date); cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i); return cal.getTime(); } //获取某年某月到某年某月按天的切片日期集合(间隔天数的集合) public static List getTimeList(int beginYear, int beginMonth, int endYear, int endMonth, int k) { List list = new ArrayList(); if (beginYear == endYear) { for (int j = beginMonth; j <= endMonth; j++) { list.add(getTimeList(beginYear, j, k)); } } else { { for (int j = beginMonth; j < 12; j++) { list.add(getTimeList(beginYear, j, k)); } for (int i = beginYear + 1; i < endYear; i++) { for (int j = 0; j < 12; j++) { list.add(getTimeList(i, j, k)); } } for (int j = 0; j <= endMonth; j++) { list.add(getTimeList(endYear, j, k)); } } } return list; } //获取某年某月按天切片日期集合(某个月间隔多少天的日期集合) public static List getTimeList(int beginYear, int beginMonth, int k) { List list = new ArrayList(); Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1); int max = begincal.getActualMaximum(Calendar.DATE); for (int i = 1; i < max; i = i + k) { list.add(begincal.getTime()); begincal.add(Calendar.DATE, k); } begincal = new GregorianCalendar(beginYear, beginMonth, max); list.add(begincal.getTime()); return list; } public static int[] formatDate(Date date) { String dateStr = formatDate(date, "yyyy-MM-dd"); String[] dates = dateStr.split("-"); int[] result = new int[3]; if (dates != null && dates.length == 3) { result[0] = MNumberUtil.convertToint(dates[0]); result[1] = MNumberUtil.convertToint(dates[1]); result[2] = MNumberUtil.convertToint(dates[2]); } return result; } /** * 将Date类型转换为日期字符串 * * @param date Date对象 * @param type 需要的日期格式(yyyy-MM-dd HH:mm:ss) * @return 按照需求格式的日期字符串 */ public static String formatDate(Date date, String type) { try { SimpleDateFormat df = new SimpleDateFormat(type); return df.format(date); } catch (Exception e) { e.printStackTrace(); } return ""; } /** * 某月最后一天 * * @param year * @param month * @return */ public static int getLastDayOfMonth(int year, int month) { Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, year); cal.set(Calendar.MONTH, month - 1); int lastDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH); cal.set(Calendar.DAY_OF_MONTH, lastDay); return lastDay; } /** * 获得指定日期前几个月相差多少天(包含当天的) * * @param startDate * @param month * @return */ public static int getDiffDays(Date startDate, int month) { Date date = new Date(); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(calendar.MONTH, -month); Date afterTime = calendar.getTime(); calendar.setTime(afterTime); calendar.add(calendar.DAY_OF_MONTH, +1); Date realTime = calendar.getTime(); int diffDays = getDiffDays(realTime, startDate); return diffDays; } /** * 获得指定日期前几年相差多少天(包含当天的) * * @param startDate * @param year * @return */ public static int getDiffDaysWithYear(Date startDate, int year) { Date date = new Date(); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(calendar.YEAR, -year); Date afterTime = calendar.getTime(); calendar.setTime(afterTime); calendar.add(calendar.DAY_OF_YEAR, +1); Date realTime = calendar.getTime(); int diffDays = getDiffDays(realTime, startDate); return diffDays; } /** * 得到年 * * @param date Date对象 * @return 年 */ public static int getYear(Date date) { Calendar c = Calendar.getInstance(); c.setTime(date); return c.get(Calendar.YEAR); } /** * 得到月 * * @param date Date对象 * @return 月 */ public static int getMonth(Date date) { Calendar c = Calendar.getInstance(); c.setTime(date); return c.get(Calendar.MONTH) + 1; } }
Android 获取时间的工具类
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