只需使用我创建的以下实用工具类并在其构造函数中传递两个date对象，然后使用 getDifferenceString（） 方法即可获取相同的对象。

 public class TimeDifference {
        int years;
        int months;
        int days;
        int hours;
        int minutes;
        int seconds;
        String differenceString;



        public TimeDifference(Date curdate, Date olddate) {

            float diff=curdate.getTime() - olddate.getTime();
            if (diff >= 0) {
                int yearDiff = Math.round( ( diff/ (365l*2592000000f))>=1?( diff/ (365l*2592000000f)):0);
                if (yearDiff > 0) {
                    years = yearDiff;
                    setDifferenceString(years + (years == 1 ? " year" : " years") + " ago");
                } else {
                    int monthDiff = Math.round((diff / 2592000000f)>=1?(diff / 2592000000f):0);
                    if (monthDiff > 0) {
                        if (monthDiff > 11)
                            monthDiff = 11;

                        months = monthDiff;
                        setDifferenceString(months + (months == 1 ? " month" : " months") + " ago");
                    } else {
                        int dayDiff = Math.round((diff / (86400000f))>=1?(diff / (86400000f)):0);
                        if (dayDiff > 0) {
                            days = dayDiff;
                            if(days==30)
                                days=29;
                            setDifferenceString(days + (days == 1 ? " day" : " days") + " ago");
                        } else {
                            int hourDiff = Math.round((diff / (3600000f))>=1?(diff / (3600000f)):0);
                            if (hourDiff > 0) {
                                hours = hourDiff;
                                setDifferenceString( hours + (hours == 1 ? " hour" : " hours") + " ago");
                            } else {
                                int minuteDiff = Math.round((diff / (60000f))>=1?(diff / (60000f)):0);
                                if (minuteDiff > 0) {
                                    minutes = minuteDiff;
                                    setDifferenceString(minutes + (minutes == 1 ? " minute" : " minutes") + " ago");
                                } else {
                                    int secondDiff =Math.round((diff / (1000f))>=1?(diff / (1000f)):0);
                                    if (secondDiff > 0)
                                        seconds = secondDiff;
                                    else
                                        seconds = 1;
                                    setDifferenceString(seconds + (seconds == 1 ? " second" : " seconds") + " ago");
                                }
                            }
                        }

                    }
                }

            }

        }
        public String getDifferenceString() {
            return differenceString;
        }

        public void setDifferenceString(String differenceString) {
            this.differenceString = differenceString;
        }
        public int getYears() {
            return years;
        }

        public void setYears(int years) {
            this.years = years;
        }

        public int getMonths() {
            return months;
        }

        public void setMonths(int months) {
            this.months = months;
        }

        public int getDays() {
            return days;
        }

        public void setDays(int days) {
            this.days = days;
        }

        public int getHours() {
            return hours;
        }

        public void setHours(int hours) {
            this.hours = hours;
        }

        public int getMinutes() {
            return minutes;
        }

        public void setMinutes(int minutes) {
            this.minutes = minutes;
        }

        public int getSeconds() {
            return seconds;
        }

        public void setSeconds(int seconds) {
            this.seconds = seconds;
        }

    }