Android 当前时间的获取

朱雀 2022-08-26 03:56 248阅读 0赞

package com.lyh.face.tools;
    
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.Calendar;
    import java.util.Date;
    import java.util.Locale;
    
    public class TimeUtil {
    
    	private static final String FORMAT_Y_M_D_H_M_S = "yyyy-MM-dd HH:mm:ss";
    	private static SimpleDateFormat sdf = null;
    	private static Calendar calendar = null;
    
    	/**
    	 * 将字符串转化为Date
    	 * 
    	 * @param str
    	 *            传入字符串时间
    	 * @return
    	 */
    	public static Date getStringToDate(String str) {
    
    		sdf = new SimpleDateFormat(FORMAT_Y_M_D_H_M_S, Locale.getDefault());
    		try {
    			return sdf.parse(str);
    		} catch (ParseException e) {
    			e.printStackTrace();
    		}
    		return null;
    	}
    	
    	/**
    	 * 获取年
    	 * */
    	public static int getYear(Date date) {
    
    		calendar = Calendar.getInstance();
    		calendar.setTime(date);
    		return calendar.get(Calendar.YEAR);
    	}
    	/**
    	 * 获取月
    	 * */
    	public static int getMon(Date date){
    		calendar = Calendar.getInstance();
    		calendar.setTime(date);
    		return (calendar.get(Calendar.MONTH)+1);
    	}
    	/**
    	 * 获取日期天
    	 * */
    	public static int getDay(Date date){
    		calendar = Calendar.getInstance();
    		calendar.setTime(date);
    		return calendar.get(Calendar.DATE);
    	}
    	/**
    	 * 获取时间字符串
    	 * */
    	public static String getTime(String date){
    		 return date.substring(11, (date.length()-3));
    	}
    	/**
    	 * 获取年月字符串
    	 * */
    	public static String getYear_Mon(String date){
    		return date.substring(0, 7);
    	}
    
    	/**
    	 * 获取当前时间
    	 * */
    	public static String getNowDateStr() {
    		SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置日期格式
    		String nowdate = df.format(new Date());// new Date()为获取当前系统时间
    		return nowdate;
    	}
    	/**
    	 * 获取当前时间标识码精确到毫秒
    	 * */
    	public static String getNowtimeKeyStr(){
    		SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmssSSS");// 设置日期格式
    		String nowdate = df.format(new Date());// new Date()为获取当前系统时间
    		return nowdate;
    	}
    	
    	/**
    	 * 获取当前时间标识码精确到秒
    	 * */
    	public static String getNowDateKeyStr(){
    		SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");// 设置日期格式
    		String nowdate = df.format(new Date());// new Date()为获取当前系统时间
    		return nowdate;
    	}
    }