时间单位换算 与不同格式显示

调用这个方法 传入一个时间 让该时间与当前系统时间作对比

/*** 设置时间** @return*/
private String getTime(long mTime) {oldTime = System.currentTimeMillis();//DateUtils  时间换算工具类String format = DateUtils.format(mTime, "MM月dd日 HH:mm");String format1 = DateUtils.format(mTime, "mm 分钟前");String format2 = "刚刚";if (oldTime - mTime >= 30 * 60 * 1000) {// 如果超过30分钟，显示时间mTime = oldTime;return format;}if (oldTime - mTime >= 5 * 60 * 1000) {// 如果超过5分钟，显示几分钟前mTime = oldTime;return format1;}if (oldTime - mTime >= 3 * 60 * 1000) {// 如果超过3分钟，显示刚刚mTime = oldTime;return format2;} else {return "";}
}

** 下面附上 DateUtils 时间换算工具类**

@SuppressLint("SimpleDateFormat")
public final class DateUtils {public static String format(Date date, String format) {if (date == null || TextUtils.isEmpty(format)) {return null;}SimpleDateFormat sdf = new SimpleDateFormat(format);return sdf.format(date);
}public static String format(long timeMillion, String format){if(timeMillion < 31507200000L){timeMillion *= 1000;}return format(new Date(timeMillion), format);
}/*** * @param date*            long 20140507* @param format* @return*/
public static String format(long date, long time, String format) {try {Date d = getDateFromNumber(date,time);return format(d, format);} catch (Exception e) {}return null;
}/*** 处理符合时间格式字符串* @param dateStr* @param format* @return*/
public static Date parser(String dateStr, String format) {if (TextUtils.isEmpty(dateStr) || TextUtils.isEmpty(format)) {return null;}SimpleDateFormat sdf = new SimpleDateFormat(format);try {return sdf.parse(dateStr);} catch (ParseException e) {// TODO Auto-generated catch blockreturn null;}
}public static String getAmonthAgo(String format) {Calendar calendar = Calendar.getInstance();calendar.setTimeInMillis(System.currentTimeMillis());calendar.add(Calendar.MONTH, -1);return format(calendar.getTime(), format);
}public static String getAmonthAgo(Date endDate, String format) {Calendar calendar = Calendar.getInstance();calendar.setTime(endDate);calendar.add(Calendar.MONTH, -1);return format(calendar.getTime(), format);
}/*** 处理非时间格式字符串如：date=20141010 time=163022* @param date* @param time* @return*/
public static Date getDateFromNumber(long date, long time) {long year = date / 10000;long month = (date % 10000) / 100;long day = date % 100;long hour = time / 10000;long minute = (time % 10000) / 100;long second = time % 100;Calendar calendar = Calendar.getInstance();calendar.set(Calendar.YEAR, (int) year);calendar.set(Calendar.MONTH, (int) month - 1);calendar.set(Calendar.DAY_OF_MONTH, (int) day);calendar.set(Calendar.HOUR_OF_DAY, (int) hour);calendar.set(Calendar.MINUTE, (int) minute);calendar.set(Calendar.SECOND, (int) second);return calendar.getTime();
}public static String getDateFromNumber(long date, long time, String format) {return DateUtils.format(getDateFromNumber(date, time), format);}public static boolean isInOneMonth(String startDateStr, String endDateStr) {Date start = parser(startDateStr, "yyyyMMdd");if (start == null) {return false;}Date end = parser(endDateStr, "yyyyMMdd");if (end == null) {return false;}Calendar calendar = Calendar.getInstance();calendar.setTime(end);calendar.add(Calendar.MONTH, -1);Date monthAgo = calendar.getTime();if (start.compareTo(monthAgo) >= 0) {return true;}return false;
}public static boolean isInOneMonth(Date startDate, Date endDate) {if (startDate == null || endDate == null) {return false;}Calendar calendar = Calendar.getInstance();calendar.setTime(endDate);calendar.add(Calendar.MONTH, -1);Date monthAgo = calendar.getTime();if (startDate.compareTo(monthAgo) >= 0) {return true;}return false;
}
/*** * @return null 时间格式错误*/
public static String getTimeAgoString(String dateStr,String paramFormat){Date date = parser(dateStr, paramFormat);if(date == null){return dateStr;}long timeMillion = date.getTime();String result = getTimeAgoString(timeMillion,paramFormat);if(TextUtils.isEmpty(result)){return dateStr;}return result;
}/*** * @return null 时间格式错误*/
public static String getTimeAgoString(long timeMillion,String resultFormat){if(timeMillion < 31507200000L){timeMillion *= 1000;}long currTime = System.currentTimeMillis();long timeSub = currTime - timeMillion;if(timeSub < 0){return "刚刚";}if(timeSub < (1 * 60 * 1000)){return "刚刚";}if(timeSub < (60 * 60 * 1000)){long t = timeSub / (60 * 1000);return t+"分钟前";}//		if(timeSub < (60 * 60 * 1000)){
//			return "半小时前";
//		}if(timeSub < (24 * 60 * 60 * 1000)){long t = timeSub / (60 * 60 * 1000);return t+"小时前";}Calendar yesterday = Calendar.getInstance();yesterday.setTimeInMillis(System.currentTimeMillis());yesterday.add(Calendar.DAY_OF_MONTH, -1);yesterday.set(Calendar.HOUR, 0);yesterday.set(Calendar.MINUTE, 0);yesterday.set(Calendar.SECOND, 0);yesterday.set(Calendar.MILLISECOND, 0);if(timeMillion > yesterday.getTimeInMillis()){return "昨天"+format(timeMillion,"HH:mm");}Calendar calendar = Calendar.getInstance();calendar.setTimeInMillis(timeMillion);int defYear = calendar.get(Calendar.YEAR);Calendar currCalendar = Calendar.getInstance();currCalendar.setTimeInMillis(System.currentTimeMillis());int currYear = currCalendar.get(Calendar.YEAR);if(defYear == currYear){return format(timeMillion,"MM-dd HH:mm");}else{return format(timeMillion,"yyyy-MM-dd");}}public static Date getDateByMillis(long time){if(time<=0){return null;}Date dat=new Date(time); return dat;
}
public static String getStringDate(Date date){if(date==null){return "";}SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm");return format.format(date);  }
public static String getStringDateByMillis(long time ){return getStringDate(getDateByMillis(time));}public static boolean isToday(long time){Calendar calendar = Calendar.getInstance();return true;}/*** 知我*/private static final SimpleDateFormat FORMATTER_INPUT = new SimpleDateFormat("EEE MMM dd HH:mm:ss Z yyyy", Locale.US);
private static final SimpleDateFormat FORMATTER_OUTPUT = new SimpleDateFormat("yyyy年MM月dd日 HH:mm");
private static final SimpleDateFormat FORMATTER_INPUT2 = new SimpleDateFormat("yyyyMMddHHmmss");
/*** 格式化日期* @param date* @return*/
public static String paserDate(String date) {try {Date myDate = FORMATTER_INPUT2.parse(date);Date curDate = new Date();long dif = curDate.getTime() - myDate.getTime();long temp = 0l;if (isToday(myDate)) {if (dif < 0) {return "1秒前";}temp = dif / (60L * 60L * 1000L);if (temp > 0) {return temp + "小时前";}temp = dif / (60 * 1000L);if (temp > 0) {return temp + "分钟前";}temp = dif / (1000L);if (temp > 0) {return temp + "秒前";}}return FORMATTER_OUTPUT.format(myDate);} catch (ParseException e) {// TODO Auto-generated catch blocke.printStackTrace();}return null;
}/*** 判断传入的日期是否是今天* @param mDate* @return*/
public static boolean isToday(Date mDate) {Date date = new Date();SimpleDateFormat format = new SimpleDateFormat("dd");String todayStr = format.format(date);String mStr = format.format(mDate);SimpleDateFormat mm = new SimpleDateFormat("MM");SimpleDateFormat yy = new SimpleDateFormat("yyyy");if (!(yy.format(date).equals(yy.format(mDate)))) {return false;} else {if (!(mm.format(date).equals(mm.format(mDate)))) {return false;} else {if (todayStr.equals(mStr)) {return true;} else {return false;}}}
}/*** 获取当前时间* @return*/
public static String getCurrentTime() {Date date = new Date();return paserDate(FORMATTER_INPUT2.format(date));
}/*** 由手机时间判断是否是周末* */
public static boolean isWeekEnd() {int week = Calendar.getInstance().get(Calendar.DAY_OF_WEEK);// Log.d("Time", "week="+week);if (week == Calendar.SATURDAY || week == Calendar.SUNDAY)return true;elsereturn false;}
/*** 判断当前日期是星期几** @param** @return dayForWeek 判断结果* @Exception 发生异常*/
public static String dayForWeek(Calendar c) {int dayForWeek = 0;if (c.get(Calendar.DAY_OF_WEEK) == 1) {dayForWeek = 7;} else {dayForWeek = c.get(Calendar.DAY_OF_WEEK) - 1;}switch (dayForWeek) {case 1:return "周一";case 2:return "周二";case 3:return "周三";case 4:return "周四";case 5:return "周五";case 6:return "周六";case 7:return "周日";default:return "";}
}

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