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 block
return 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 block
e.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;
else
return 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 "";
}
}