import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date; public class DateUtils { /**
* 返回unix时间戳 (1970年至今的秒数)
* @return
*/
public static long getUnixStamp(){
return System.currentTimeMillis()/1000;
} /**
* 得到昨天的日期
* @return
*/
public static String getYestoryDate() {
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.DATE,-1);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String yestoday = sdf.format(calendar.getTime());
return yestoday;
} /**
* 得到今天的日期
* @return
*/
public static String getTodayDate(){
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String date = sdf.format(new Date());
return date;
} /**
* 时间戳转化为时间格式
* @param timeStamp
* @return
*/
public static String timeStampToStr(long timeStamp) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String date = sdf.format(timeStamp * 1000);
return date;
} /**
* 得到日期 yyyy-MM-dd
* @param timeStamp 时间戳
* @return
*/
public static String formatDate(long timeStamp) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String date = sdf.format(timeStamp*1000);
return date;
} /**
* 得到时间 HH:mm:ss
* @param timeStamp 时间戳
* @return
*/
public static String getTime(long timeStamp) {
String time = null;
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String date = sdf.format(timeStamp * 1000);
String[] split = date.split("\\s");
if ( split.length > 1 ){
time = split[1];
}
return time;
} /**
* 将一个时间戳转换成提示性时间字符串，如刚刚，1秒前
*
* @param timeStamp
* @return
*/
public static String convertTimeToFormat(long timeStamp) {
long curTime =System.currentTimeMillis() / (long) 1000 ;
long time = curTime - timeStamp; if (time < 60 && time >= 0) {
return "刚刚";
} else if (time >= 60 && time < 3600) {
return time / 60 + "分钟前";
} else if (time >= 3600 && time < 3600 * 24) {
return time / 3600 + "小时前";
} else if (time >= 3600 * 24 && time < 3600 * 24 * 30) {
return time / 3600 / 24 + "天前";
} else if (time >= 3600 * 24 * 30 && time < 3600 * 24 * 30 * 12) {
return time / 3600 / 24 / 30 + "个月前";
} else if (time >= 3600 * 24 * 30 * 12) {
return time / 3600 / 24 / 30 / 12 + "年前";
} else {
return "刚刚";
}
} /**
* 将一个时间戳转换成提示性时间字符串，(多少分钟)
*
* @param timeStamp
* @return
*/
public static String timeStampToFormat(long timeStamp) {
long curTime =System.currentTimeMillis() / (long) 1000 ;
long time = curTime - timeStamp;
return time/60 + "";
} }