Android关于时间日期相关常用方法-白红宇

Android关于时间日期相关常用方法

阅读量：792 次

发布时间：2019-03-24

本文共 3635 字，大约阅读时间需要 12 分钟。


   
 
   
 
   
public class DateUtils {
   
 /**
   
 * 获取当前时间的毫秒数
   
 * 参数格式：yyyy-MM-dd HH:mm:ss
   
 * @param time
   
 * @return
   
 * @throws ParseException
   
 */
   
 public static long getTimeInMillis(String time) throws ParseException {  
   
 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
   
 Calendar cal = Calendar.getInstance();  
   
 cal.setTime(sdf.parse(time));  
   
 long timeInMillis = cal.getTimeInMillis();  
   
 return timeInMillis;}
   
 /**
   
 * 获取当前日期格式： yyyy-mm-dd HH:mm:ss
   
 */
   
 public static String getDate() {  
   
 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
   
 return sdf.format(new Date());}
   
 /**
   
 * 获取当前日期格式： yyyy-mm-dd
   
 */
   
 public static String getDate1() {  
   
 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");  
   
 return sdf.format(new Date());}
   
 /**
   
 * 获取当前时间格式： HH:mm:ss
   
 */
   
 public static String getTime() {  
   
 SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");  
   
 return sdf.format(new Date());}
   
 /**
   
 * 获取当前时间格式： yyyyMMddHHmmss
   
 */
   
 public static String getTime2() {  
   
 SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");  
   
 return sdf.format(new Date());}
   
 /**
   
 * 获取当前星期几
   
 */
   
 public static String getWeek() {  
   
 Calendar c = Calendar.getInstance();  
   
 int mWay = c.get(Calendar.DAY_OF_WEEK);  
   
 if (mWay == 1) return "星期天";  
   
 else if (mWay == 2) return "星期一";  
   
 else if (mWay == 3) return "星期二";  
   
 else if (mWay == 4) return "星期三";  
   
 else if (mWay == 5) return "星期四";  
   
 else if (mWay == 6) return "星期五";  
   
 else return "星期六";}
   
 /**
   
 * 计算两个日期之间的相差天数
   
 * 
   
 * @param smdate 较小的时间
   
 * @param bdate 较大的时间
   
 * @return 天数差
   
 * @throws ParseException
   
 */
   
 public static int daysBetween(Date smdate, Date bdate) throws ParseException {  
   
 SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");  
   
 smdate = sdf.parse(sdf.format(smdate));  
   
 bdate = sdf.parse(sdf.format(bdate));  
   
 Calendar cal = Calendar.getInstance();  
   
 cal.setTime(smdate);  
   
 long time1 = cal.getTimeInMillis();  
   
 cal.setTime(bdate);  
   
 long time2 = cal.getTimeInMillis();  
   
 long between_days = (time2 - time1) / (1000 * 3600 * 24);  
   
 return (int) between_days;}
   
 /**
   
 * 计算两个时间之间的天数
   
 *@param smdate 较小的时间字符串
   
 * @param bdate 较大的时间字符串
   
 * @return 天数差
   
 * @throws ParseException
   
 */
   
 public static int daysBetweenString(String smdate, String bdate) throws ParseException {  
   
 SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");  
   
 Calendar cal = Calendar.getInstance();  
   
 cal.setTime(sdf.parse(smdate));  
   
 long time1 = cal.getTimeInMillis();  
   
 cal.setTime(sdf.parse(bdate));  
   
 long time2 = cal.getTimeInMillis();  
   
 long between_days = (time2 - time1) / (1000 * 3600 * 24);  
   
 return (int) between_days;}
   
 /**
   
 * 判断当前时间是否在给定时间段内
   
 * @param currentTime 当前时间字符串
   
 * @param beginTime 开始时间字符串
   
 * @param endTime 结束时间字符串
   
 * @return boolean
   
 */
   
 public static boolean isCurrentTimeBetween(String currentTime, String beginTime, String endTime) throws ParseException {  
   
 SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");  
   
 Calendar cal = Calendar.getInstance();  
   
 cal.setTime(sdf.parse(currentTime));  
   
 long currentTimeMillis = cal.getTimeInMillis();  
   
 cal.setTime(sdf.parse(beginTime));  
   
 long beginTimeMillis = cal.getTimeInMillis();  
   
 cal.setTime(sdf.parse(endTime));  
   
 long endTimeMillis = cal.getTimeInMillis();  
   
 return currentTimeMillis > beginTimeMillis && currentTimeMillis < endTimeMillis;}