安卓时间工具类，计算时间差，比较当前时间

自己的工具类贴上来。。。有什么不足的地方请大家指出。

<span style="font-size:18px;">package com.example.property.util;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Locale;import android.text.format.Time;/** *  * @author cj 2016-5-26 *  */public class TimeUtil {private SimpleDateFormat sf = null;/** * 获取当前时间 *  * @return */public String getNowTime() {String timeString = null;Time time = new Time();time.setToNow();String year = thanTen(time.year);String month = thanTen(time.month + 1);String monthDay = thanTen(time.monthDay);String hour = thanTen(time.hour);String minute = thanTen(time.minute);timeString = year + "-" + month + "-" + monthDay + " " + hour + ":"+ minute;// System.out.println("-------timeString----------" + timeString);return timeString;}public int calculate(int year, int month) {boolean yearleap = judge(year);int day;if (yearleap && month == 2) {day = 29;} else if (!yearleap && month == 2) {day = 28;} else if (month == 4 || month == 6 || month == 9 || month == 11) {day = 30;} else {day = 31;}return day;}public boolean judge(int year) {boolean yearleap = (year % 400 == 0) || (year % 4 == 0)&& (year % 100 != 0);// 采用布尔数据计算判断是否能整除return yearleap;}/** * 十一下加零 *  * @param str * @return */public String thanTen(int str) {String string = null;if (str < 10) {string = "0" + str;} else {string = "" + str;}return string;}/** * 计算时间差 *  * @param starTime *            开始时间 * @param endTime *            结束时间 * @param type *            返回类型 ==1----天，时，分。 ==2----时 * @return 返回时间差 */public String getTimeDifference(String starTime, String endTime) {String timeString = "";SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");try {Date parse = dateFormat.parse(starTime);Date parse1 = dateFormat.parse(endTime);long diff = parse1.getTime() - parse.getTime();long day = diff / (24 * 60 * 60 * 1000);long hour = (diff / (60 * 60 * 1000) - day * 24);long min = ((diff / (60 * 1000)) - day * 24 * 60 - hour * 60);long s = (diff / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);long ms = (diff - day * 24 * 60 * 60 * 1000 - hour * 60 * 60 * 1000- min * 60 * 1000 - s * 1000);// System.out.println(day + "天" + hour + "小时" + min + "分" + s +// "秒");long hour1 = diff / (60 * 60 * 1000);String hourString = hour1 + "";long min1 = ((diff / (60 * 1000)) - hour1 * 60);timeString = hour1 + "小时" + min1 + "分";// System.out.println(day + "天" + hour + "小时" + min + "分" + s +// "秒");} catch (ParseException e) {// TODO Auto-generated catch blocke.printStackTrace();}return timeString;}/** * 计算相差的小时 *  * @param starTime * @param endTime * @return */public String getTimeDifferenceHour(String starTime, String endTime) {String timeString = "";SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");try {Date parse = dateFormat.parse(starTime);Date parse1 = dateFormat.parse(endTime);long diff = parse1.getTime() - parse.getTime();String string = Long.toString(diff);float parseFloat = Float.parseFloat(string);float hour1 = parseFloat / (60 * 60 * 1000);timeString = Float.toString(hour1);} catch (ParseException e) {// TODO Auto-generated catch blocke.printStackTrace();}return timeString;}/** * 获取时间中的某一个时间点 *  * @param str * @param type * @return */public String getJsonParseShiJian(String str, int type) {String shijanString = null;String nian = str.substring(0, str.indexOf("-"));String yue = str.substring(str.indexOf("-") + 1, str.lastIndexOf("-"));String tian = str.substring(str.lastIndexOf("-") + 1, str.indexOf(" "));String shi = str.substring(str.indexOf(" ") + 1, str.lastIndexOf(":"));String fen = str.substring(str.lastIndexOf(":") + 1, str.length());switch (type) {case 1:shijanString = nian;break;case 2:shijanString = yue;break;case 3:shijanString = tian;break;case 4:shijanString = shi;break;case 5:shijanString = fen;break;}return shijanString;}/** * Sring变int *  * @param str * @return */public int strToInt(String str) {int value = 0;value = Integer.parseInt(str);return value;}/** * 与当前时间比较早晚 *  * @param time *            需要比较的时间 * @return 输入的时间比现在时间晚则返回true */public boolean compareNowTime(String time) {boolean isDayu = false;SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");try {Date parse = dateFormat.parse(time);Date parse1 = dateFormat.parse(getNowTime());long diff = parse1.getTime() - parse.getTime();if (diff <= 0) {isDayu = true;} else {isDayu = false;}} catch (ParseException e) {// TODO Auto-generated catch blocke.printStackTrace();}return isDayu;}/** * 把时间戳变yyyy-MM-dd HH:mm格式时间 *  * @param time * @return */public String getDateToString(long time) {Date d = new Date(time);sf = new SimpleDateFormat("yyyy-MM-dd HH:mm");return sf.format(d);}/** * 返回时间戳 *  * @param time * @return */public long dataOne(String time) {SimpleDateFormat sdr = new SimpleDateFormat("yyyy-MM-dd HH:mm",Locale.CHINA);Date date;long l = 0;try {date = sdr.parse(time);l = date.getTime();} catch (ParseException e) {e.printStackTrace();}return l;}/** * 比较两个时间 *  * @param starTime *            开始时间 * @param endString *            结束时间 * @return 结束时间大于开始时间返回true，否则反之֮ */public boolean compareTwoTime(String starTime, String endString) {boolean isDayu = false;SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");try {Date parse = dateFormat.parse(starTime);Date parse1 = dateFormat.parse(endString);long diff = parse1.getTime() - parse.getTime();if (diff >= 0) {isDayu = true;} else {isDayu = false;}} catch (ParseException e) {// TODO Auto-generated catch blocke.printStackTrace();}return isDayu;}public boolean compareTwoTime2(String starTime, String endString) {boolean isDayu = false;SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");try {Date parse = dateFormat.parse(starTime);Date parse1 = dateFormat.parse(endString);long diff = parse1.getTime() - parse.getTime();if (diff >= 0) {isDayu = true;} else {isDayu = false;}} catch (ParseException e) {// TODO Auto-generated catch blocke.printStackTrace();}return isDayu;}/** * 获取年 *  * @param time * @return */public String getTimeYear(String time) {String substring = time.substring(0, time.lastIndexOf(" "));return substring;}/** * 换算小时，0.5小时-->0小时30分 *  * @param hour * @return */private String convertTime(String hour) {String substring = hour.substring(0, hour.lastIndexOf("."));String substring2 = hour.substring(hour.lastIndexOf(".") + 1,hour.length());substring2 = "0." + substring2;float f2 = Float.parseFloat(substring2);f2 = f2 * 60;String string = Float.toString(f2);String min = string.substring(0, string.lastIndexOf("."));return substring + "小时" + min + "分";}}</span>