TimeUtils.java

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

import android.text.format.DateUtils;

public class TimeUtils {

	public static final String DD_MM_YY_HH_MM = "dd-MMM-yy h:mm";
	public static final String HH_MM = "h:mm";
	
	public final static long ONE_SECOND = 1000;
	public final static long SECONDS = 60;
 
	public final static long ONE_MINUTE = ONE_SECOND * 60;
	public final static long MINUTES = 60;
 
	public final static long ONE_HOUR = ONE_MINUTE * 60;
	public final static long HOURS = 24;
 
	public final static long ONE_DAY = ONE_HOUR * 24;
 
	/**
	 * converts time (in milliseconds) to human-readable format
	 * "<w> days, <x> hours, <y> minutes and (z) seconds"
	 */
	public static String getElapsedTime(long duration) {
		
		Calendar cal = Calendar.getInstance();
		duration = cal.getTimeInMillis()-duration;
		
		StringBuffer res = new StringBuffer();
		long temp = 0;
		if (duration >= ONE_SECOND) {
			temp = duration / ONE_DAY;
			if (temp > 0) {
				duration -= temp * ONE_DAY;
				res.append(temp).append(" day").append(temp > 1 ? "s" : "")
						.append(duration >= ONE_MINUTE ? ", " : "");
			}
 
			temp = duration / ONE_HOUR;
			if (temp > 0) {
				duration -= temp * ONE_HOUR;
				res.append(temp).append(" hour").append(temp > 1 ? "s" : "")
						.append(duration >= ONE_MINUTE ? ", " : "");
			}
 
			temp = duration / ONE_MINUTE;
			if (temp > 0) {
				duration -= temp * ONE_MINUTE;
				res.append(temp).append(" minute").append(temp > 1 ? "s" : "");
			}
 
			if (!res.toString().equals("") && duration >= ONE_SECOND) {
				res.append(" and ");
			}
 
			temp = duration / ONE_SECOND;
			if (temp > 0) {
				res.append(temp).append(" second").append(temp > 1 ? "s" : "");
			}
			return res.toString();
		} else {
			return "0 second";
		}
	}
	
	public static String getFormatedDate(String dateTime, String formatType) {
		long millisec = Long.parseLong(dateTime);
		Date now = new Date(millisec);

		// String formatType = "MMM d, ''yy h:mm a";

		SimpleDateFormat format = new SimpleDateFormat(formatType,
				Locale.ENGLISH);
		return format.format(now);
	}
	
	public static String getElapsedDateTime(long time){
		Calendar cal = Calendar.getInstance();
		return DateUtils.getRelativeTimeSpanString(time, cal.getTimeInMillis(), DateUtils.FORMAT_ABBREV_RELATIVE).toString();
	}
}