【Android】DateUtil(时间工具类)

怼烎@ 2022-09-17 05:29 200阅读 0赞

### DateUtil,时间工具类 ###

> Crazy Coding

package com.sq.net.utils;
    
    import android.annotation.SuppressLint;
    
    import java.text.DateFormat;
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.Date;
    
    /**
     * @author Mozhimen / Kolin Zhao
     * @date 2020/4/5
     */
    public class DateUtil {
    
        public final static String format_yyyyMMddhhmmss = "yyyy-MM-dd HH:mm:ss";
    
        public final static String format_yyyyMMddhhmm = "yyyy-MM-dd HH:mm";
    
        public final static String format_yyyyMMddhh = "yyyy-MM-dd HH";
    
        public final static String format_yyyyMMdd = "yyyy-MM-dd";
    
        public final static String format_hhmmss = "HH:mm:ss";
    
        public final static String format_hhmm = "HH:mm";
    
        public final static String format_ss = "ss";
    
        public final static String format_mm = "mm";
    
        public final static String format_hh = "HH";
    
        //日期转字符串
        public static String formatDateToString(Date date, String formatDate) {
            if (date == null) {
                return null;
            }
            @SuppressLint("SimpleDateFormat") DateFormat format = new SimpleDateFormat(formatDate);
            String resStr = format.format(date);
            return resStr;
        }
    
        //字符串转日期
        public static Date formatStringToDate(String dateStr, String formatDate) {
            if (dateStr == null) {
                return null;
            }
            @SuppressLint("SimpleDateFormat") DateFormat format = new SimpleDateFormat(formatDate);
            Date date = null;
            try {
                date = format.parse(dateStr);
            } catch (ParseException e) {
                e.printStackTrace();
            }
            return date;
        }
    
        //时间格式转换
        public static String convertDateFormatOfString(String dateStr, String oldFormatDate, String newFormatDate) {
            if (dateStr == null) {
                return null;
            }
            @SuppressLint("SimpleDateFormat") DateFormat format = new SimpleDateFormat(oldFormatDate);
            Date date = null;
            try {
                date = format.parse(dateStr);
            } catch (ParseException e) {
                e.printStackTrace();
            }
    
            String resStr = null
            @SuppressLint("SimpleDateFormat") DateFormat format1 = new SimpleDateFormat(newFormatDate);
            if (date != null) {
                resStr = format1.format(date);
            }
            return resStr;
        }
    
        //获得分裂的时间
        public static String getFormat_hhmmssSplit(String dateStr, String formatDate) {
            if (dateStr == null) {
                return null;
            }
    
            String[] timeArray = dateStr.split(":");
            if (timeArray.length < 3) {
                return null;
            }
    
            String temp;
            switch (formatDate) {
                case format_hh:
                    temp = timeArray[0];
                    break;
                case format_mm:
                    temp = timeArray[1];
                    break;
                default:
                    temp = timeArray[3];
            }
            return temp;
        }
        
        //时间比较
        public static int dateCompare(Date date1, Date date2) {
            if (date1 == null || date2 == null) {
                return -1;
            }
            return date1.compareTo(date2);
        }
    
        public static int dateCompare(String date1, String date2, String formatDate) {
            if (date1 == null || date2 == null || formatDate == null) {
                return -1;
            }
            Date d1 = formatStringToDate(date1, formatDate);
            Date d2 = formatStringToDate(date2, formatDate);
            return dateCompare(d1, d2);
        }
    }

> How To Use

`Example1:判断时间是否为整点数,包括30`

//是否为整点数
    fun isTimeIntegerPoint(): Boolean {
    	val date = DateUtil.formatDateToString(Date(), DateUtil.format_hhmm)//12:00
        return date?.let {
        	val strMinute = date.split(":")[1]
            strMinute == "00" || strMinute == "30"
    	} ?: false
    }

`Example2:Date减15分钟`

@SuppressLint("SimpleDateFormat")
    fun dateMinuteMinus15Seconds(date: Date): Date {
    	val newDateLong: Long = date.time - 1000L * 60L * 15L //减15分钟
        return Date(newDateLong)
    }