java utils for android

Posted 2021-05-08

package com.aai.dawei.aai2;

import java.util.Date;
import java.util.UUID;

/**
 * Created by dawei on 15/7/16.
 */
public class StringUtils {

    public static String formatKey(String key){
        //通过加上两段参数保证同一时空下生成的key是唯一的，重复概率极低，几乎可以忽略，如使用频率到达某一量级，可加大UUI的截取长度
        //UUID格式类似String s = UUID.randomUUID().toString().substring(0,8)+s.substring(9,13)+s.substring(14,18)+s.substring(19,23)+s.substring(24);
        //最长可达32位
//        String timeStamp = TimeUtils.getStringToday().replace(" ","");
        String timeStamp = (new Date().getTime())+"";
        String uuid = UUID.randomUUID().toString().substring(0,8);
        return key+"_"+uuid+"_"+timeStamp;
    }

    public static String formatValue(String value){
        String timeStamp = (new Date().getTime())+"";
        return value+"-"+timeStamp;
    }
}


/*
 *
 *   Copyright © 2014 Chengdu WeShare Technology
 *   All rights reserved.
 *
 *   Filename:
 *   -----------------------------------------------------------------
 *   YYYY-mm-dd  ticket#XXX
 *
 *
 */

package com.aai.dawei.aai2;

import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;
import java.util.Random;

/**
 * Created by dawei on 15/6/17.
 */
public class TimeUtils {
    /**
     * 获取现在时间
     *
     * @return 返回时间类型 yyyy-MM-dd HH:mm:ss
     */
    public static Date getNowDate() {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateString = formatter.format(currentTime);
        ParsePosition pos = new ParsePosition(8);
        Date currentTime_2 = formatter.parse(dateString, pos);
        return currentTime_2;
    }

    /**
     * 指定str毫秒数转化为对应时间
     *
     * @return 返回时间类型 yyyy-MM-dd HH:mm:ss
     */
    public static String timeMillis2Date(String millis) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
        long time = Long.parseLong(millis);
        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(time);
        return formatter.format(calendar.getTime());
    }

    /**
     * 获取现在时间
     *
     * @return返回短时间格式 yyyy-MM-dd
     */
    public static Date getNowDateShort() {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        String dateString = formatter.format(currentTime);
        ParsePosition pos = new ParsePosition(8);
        Date currentTime_2 = formatter.parse(dateString, pos);
        return currentTime_2;
    }

    /**
     * 获取现在时间
     *
     * @return返回字符串格式 yyyy-MM-dd HH:mm:ss
     */
    public static String getStringDate() {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateString = formatter.format(currentTime);
        return dateString;
    }

    /**
     * 获取现在时间
     *
     * @return 返回短时间字符串格式yyyy-MM-dd
     */
    public static String getStringDateShort() {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        String dateString = formatter.format(currentTime);
        return dateString;
    }

    /**
     * 获取时间 小时:分;秒 HH:mm:ss
     *
     * @return
     */
    public static String getTimeShort() {
        SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
        Date currentTime = new Date();
        String dateString = formatter.format(currentTime);
        return dateString;
    }

    /**
     * 将长时间格式字符串转换为时间 yyyy-MM-dd HH:mm:ss
     *
     * @param strDate
     * @return
     */
    public static Date strToDateLong(String strDate) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatter.parse(strDate, pos);
        return strtodate;
    }

    /**  * 将长时间格式时间转换为字符串 yyyy-MM-dd HH:mm:ss  *   * @param dateDate  * @return  */
    public static String dateToStrLong(Date dateDate) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateString = formatter.format(dateDate);
        return dateString;
    }

    /**
     * 将短时间格式时间转换为字符串 yyyy-MM-dd
     *
     * @param dateDate
     * @param
     * @return
     */
    public static String dateToStr(Date dateDate) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        String dateString = formatter.format(dateDate);
        return dateString;
    }

    /**
     * 将短时间格式字符串转换为时间 yyyy-MM-dd
     *
     * @param strDate
     * @return
     */
    public static Date strToDate(String strDate) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatter.parse(strDate, pos);
        return strtodate;
    }

    /**
     * 得到现在时间
     *
     * @return
     */
    public static Date getNow() {
        Date currentTime = new Date();
        return currentTime;
    }

    /**
     * 提取一个月中的最后一天
     *
     * @param day
     * @return
     */
    public static Date getLastDate(long day) {
        Date date = new Date();
        long date_3_hm = date.getTime() - 3600000 * 34 * day;
        Date date_3_hm_date = new Date(date_3_hm);
        return date_3_hm_date;
    }

    /**
     * 得到现在时间
     *
     * @return 字符串 yyyyMMdd HHmmss
     */
    public static String getStringToday() {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd HHmmss");
        String dateString = formatter.format(currentTime);
        return dateString;
    }

    /**
     * 得到现在小时
     */
    public static String getHour() {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateString = formatter.format(currentTime);
        String hour;
        hour = dateString.substring(11, 13);
        return hour;
    }

    /**
     * 得到现在分钟
     *
     * @return
     */
    public static String getTime() {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateString = formatter.format(currentTime);
        String min;
        min = dateString.substring(14, 16);
        return min;
    }

    /**
     * 根据用户传入的时间表示格式，返回当前时间的格式 如果是yyyyMMdd，注意字母y不能大写。
     *
     * @param sformat
     *            yyyyMMddhhmmss
     * @return
     */
    public static String getUserDate(String sformat) {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat(sformat);
        String dateString = formatter.format(currentTime);
        return dateString;
    }

    /**
     * 二个小时时间间的差值,必须保证二个时间都是"HH:MM"的格式，返回字符型的分钟
     */
    public static String getTwoHour(String st1, String st2) {
        String[] kk = null;
        String[] jj = null;
        kk = st1.split(":");
        jj = st2.split(":");
        if (Integer.parseInt(kk[0]) < Integer.parseInt(jj[0]))
            return "0";
        else {
            double y = Double.parseDouble(kk[0]) + Double.parseDouble(kk[1]) / 60;
            double u = Double.parseDouble(jj[0]) + Double.parseDouble(jj[1]) / 60;
            if ((y - u) > 0)
                return y - u + "";
            else
                return "0";
        }
    }

    /**
     * 得到二个日期间的间隔天数
     */
    public static String getTwoDay(String sj1, String sj2) {
        SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
        long day = 0;
        try {
            Date date = myFormatter.parse(sj1);
            Date mydate = myFormatter.parse(sj2);
            day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);
        } catch (Exception e) {
            return "";
        }
        return day + "";
    }

    /**
     * 时间前推或后推分钟,其中JJ表示分钟.
     */
    public static String getPreTime(String sj1, String jj) {
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String mydate1 = "";
        try {
            Date date1 = format.parse(sj1);
            long Time = (date1.getTime() / 1000) + Integer.parseInt(jj) * 60;
            date1.setTime(Time * 1000);
            mydate1 = format.format(date1);
        } catch (Exception e) {
        }
        return mydate1;
    }

    /**
     * 得到一个时间延后或前移几天的时间,nowdate为时间,delay为前移或后延的天数
     */
    public static String getNextDay(String nowdate, String delay) {
        try{
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            String mdate = "";
            Date d = strToDate(nowdate);
            long myTime = (d.getTime() / 1000) + Integer.parseInt(delay) * 24 * 60 * 60;
            d.setTime(myTime * 1000);
            mdate = format.format(d);
            return mdate;
        }catch(Exception e){
            return "";
        }
    }

    /**
     * 判断是否润年
     *
     * @param ddate
     * @return
     */
    public static boolean isLeapYear(String ddate) {

        /**
         * 详细设计： 1.被400整除是闰年，否则： 2.不能被4整除则不是闰年 3.能被4整除同时不能被100整除则是闰年
         * 3.能被4整除同时能被100整除则不是闰年
         */
        Date d = strToDate(ddate);
        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
        gc.setTime(d);
        int year = gc.get(Calendar.YEAR);
        if ((year % 400) == 0)
            return true;
        else if ((year % 4) == 0) {
            if ((year % 100) == 0)
                return false;
            else
                return true;
        } else
            return false;
    }

    /**
     * 返回美国时间格式 26 Apr 2006
     *
     * @param str
     * @return
     */
    public static String getEDate(String str) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatter.parse(str, pos);
        String j = strtodate.toString();
        String[] k = j.split(" ");
        return k[2] + k[1].toUpperCase() + k[5].substring(2, 4);
    }

    /**
     * 获取一个月的最后一天
     *
     * @param dat
     * @return
     */
    public static String getEndDateOfMonth(String dat) {// yyyy-MM-dd
        String str = dat.substring(0, 8);
        String month = dat.substring(5, 7);
        int mon = Integer.parseInt(month);
        if (mon == 1 || mon == 3 || mon == 5 || mon == 7 || mon == 8 || mon == 10 || mon == 12) {
            str += "31";
        } else if (mon == 4 || mon == 6 || mon == 9 || mon == 11) {
            str += "30";
        } else {
            if (isLeapYear(dat)) {
                str += "29";
            } else {
                str += "28";
            }
        }
        return str;
    }

    /**
     * 判断二个时间是否在同一个周
     *
     * @param date1
     * @param date2
     * @return
     */
    public static boolean isSameWeekDates(Date date1, Date date2) {
        Calendar cal1 = Calendar.getInstance();
        Calendar cal2 = Calendar.getInstance();
        cal1.setTime(date1);
        cal2.setTime(date2);
        int subYear = cal1.get(Calendar.YEAR) - cal2.get(Calendar.YEAR);
        if (0 == subYear) {
            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
                return true;
        } else if (1 == subYear && 11 == cal2.get(Calendar.MONTH)) {
            // 如果12月的最后一周横跨来年第一周的话则最后一周即算做来年的第一周
            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
                return true;
        } else if (-1 == subYear && 11 == cal1.get(Calendar.MONTH)) {
            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
                return true;
        }
        return false;
    }

    /**
     * 产生周序列,即得到当前时间所在的年度是第几周
     *
     * @return
     */
    public static String getSeqWeek() {
        Calendar c = Calendar.getInstance(Locale.CHINA);
        String week = Integer.toString(c.get(Calendar.WEEK_OF_YEAR));
        if (week.length() == 1)
            week = "0" + week;
        String year = Integer.toString(c.get(Calendar.YEAR));
        return year + week;
    }


    /**
     * 两个时间之间的天数
     *
     * @param date1
     * @param date2
     * @return
     */
    public static long getDays(String date1, String date2) {
        if (date1 == null || date1.equals(""))
            return 0;
        if (date2 == null || date2.equals(""))
            return 0;
        // 转换为标准时间
        SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
        Date date = null;
        Date mydate = null;
        try {
            date = myFormatter.parse(date1);
            mydate = myFormatter.parse(date2);
        } catch (Exception e) {
        }
        long day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);
        return day;
    }


    /**
     * 取得数据库主键 生成格式为yyyymmddhhmmss+k位随机数
     *
     * @param k
     *            表示是取几位随机数，可以自己定
     */

    public static String getNo(int k) {

        return getUserDate("yyyyMMddhhmmss") + getRandom(k);
    }

    /**
     * 返回一个随机数
     *
     * @param i
     * @return
     */
    public static String getRandom(int i) {
        Random jjj = new Random();
        // int suiJiShu = jjj.nextInt(9);
        if (i == 0)
            return "";
        String jj = "";
        for (int k = 0; k < i; k++) {
            jj = jj + jjj.nextInt(9);
        }
        return jj;
    }


}