Android 时间戳转换工具

上代码

import android.annotation.SuppressLint;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class DateUtil {
    /**
     *将字符串转为时间戳
     *  * @param dateString
     *  * @param pattern
     *  * @return
     *  */
    public static long getStringToDate(String dateString, String pattern) {
        SimpleDateFormat dateFormat = new SimpleDateFormat(pattern);
        Date date = new Date();
        try{
            date = dateFormat.parse(dateString);
        } catch(ParseException e) {
            e.printStackTrace();
        }
        return date.getTime();
    }

    /**
     * 时间戳转换成字符窜
     * @param milSecond
     * @param pattern
     * @return
     */
    public static String getDateToString(long milSecond, String pattern) {
        Date date = new Date(milSecond);
        SimpleDateFormat format = new SimpleDateFormat(pattern);
        return format.format(date);
    }

    /**
     * 获取当前时间
     * @param pattern
     * @return
     */
    public static String getCurDate(String pattern){
        SimpleDateFormat sDateFormat = new SimpleDateFormat(pattern);
        return sDateFormat.format(new java.util.Date());
    }

    /**
     * 获取系统时间戳
     * @return
     */
    public long getCurTimeLong(){
        long time=System.currentTimeMillis();
        return time;
    }

    /**
     * 时间戳转换成字符窜
     * @param time
     * @param pattern
     * @return
     */
    public static String timetodate(String time,String pattern) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(Long.parseLong(time)*1000);
        @SuppressLint("SimpleDateFormat")
        SimpleDateFormat sf = new SimpleDateFormat(pattern);//这里的格式可换"yyyy年-MM月dd日-HH时mm分ss秒"等等格式

        String date = sf.format(calendar.getTime());
        return date;
    }

    /**
     * 输入时间戳变星期
     *
     * @param time
     * @return
     */
    public static String changeweek(String time) {
        @SuppressLint("SimpleDateFormat")
        SimpleDateFormat sdr = new SimpleDateFormat("yyyy年MM月dd日HH时mm分ss");
        long lcc = Long.valueOf(time);
        int i = Integer.parseInt(time);
        String times = sdr.format(new Date(i * 1000L));
        Date date = null;
        int mydate = 0;
        String week = null;
        try {
            date = sdr.parse(times);
            Calendar cd = Calendar.getInstance();
            cd.setTime(date);
            mydate = cd.get(Calendar.DAY_OF_WEEK);
            // 获取指定日期转换成星期几
        } catch (Exception e) {
            e.printStackTrace();
        }
        if (mydate == 1) {
            week = "星期日";
        } else if (mydate == 2) {
            week = "星期一";
        } else if (mydate == 3) {
            week = "星期二";
        } else if (mydate == 4) {
            week = "星期三";
        } else if (mydate == 5) {
            week = "星期四";
        } else if (mydate == 6) {
            week = "星期五";
        } else if (mydate == 7) {
            week = "星期六";
        }
        return week;
    }

}