TimeUtil.java

package net.udrunk.infra;

import java.util.Date;

import net.udrunk.R;
import android.content.Context;
import android.content.res.Resources;
import android.text.format.DateFormat;

public class TimeUtil {

	public static long SECOND = 1000;
	public static long MINUTE = 60 * SECOND;
	public static long HOUR = 60 * MINUTE;
	public static long DAY = 24 * HOUR;
	public static long MONTH = 30 * DAY;

	@SuppressWarnings("deprecation")
	public static String formatAgoDate(Date date, Context context) {
		String result = null;
		Date now = new Date();

		long diff = now.getTime() - date.getTime();
		int value;

		Resources res = context.getResources();

		// Less than a minute
		if (diff < MINUTE) {

			value = (int) (diff / SECOND);
			result = res.getQuantityString(R.plurals.seconds_ago, value, value);

		}
		// Less than an hour
		else if (diff < HOUR) {

			value = (int) (diff / MINUTE);
			result = res.getQuantityString(R.plurals.minutes_ago, value, value);

		}
		// Less than 12 hours
		else if (diff < DAY / 2) {

			value = (int) (diff / HOUR);
			result = res.getQuantityString(R.plurals.hours_ago, value, value);

		}
		// Today
		else if (diff < DAY && date.getDate() == now.getDate()) {
			result = res.getString(R.string.todayat,
					DateFormat.format("h:mmaa", date));

		}
		// Yesterday
		else if (diff < 2 * DAY && date.getDate() == (now.getDate() - 1)) {
			result = res.getString(R.string.yesterdayat,
					DateFormat.format("h:mmaa", date));

		}
		// Less than a month
		else if (diff < MONTH) {

			value = (int) (diff / DAY);
			result = res.getQuantityString(R.plurals.days_ago, value, value);

		}
		// More than a month
		else {

			value = (int) (diff / MONTH);
			result = res.getQuantityString(R.plurals.months_ago, value, value);

		}

		return result;
	}
	
	public static long getCurrentTime()
	{
		Date now = new Date();
		return now.getTime();
	}
}