DateUtils.java

package com.cellasoft.univrapp.utils;

import android.content.Context;
import android.util.Log;
import com.cellasoft.univrapp.BuildConfig;

import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

/**
 * Internal helper class for date conversions.
 */
public final class DateUtils {
    /**
     * @see <a href="http://www.ietf.org/rfc/rfc0822.txt">RFC 822</a>
     */
    public static final String RFC822 = "EEE, dd MMM yyyy HH:mm:ss Z";
    private static final ThreadLocal<DateFormat> formatRFC822 = new ThreadLocal<DateFormat>() {
        protected synchronized DateFormat initialValue() {
            return new SimpleDateFormat(RFC822, Locale.ENGLISH);
        }
    };
    public static final String NEWS_DATE_FORMAT = "d MMM',' yyyy 'at' HH:mm a";
    private static final ThreadLocal<DateFormat> dateFormat = new ThreadLocal<DateFormat>() {
        protected synchronized DateFormat initialValue() {
            return new SimpleDateFormat(NEWS_DATE_FORMAT, Locale.getDefault());
        }
    };
    private static final String TAG = DateUtils.class.getSimpleName();

    /* Hide constructor */
    private DateUtils() {
    }

    /**
     * Parses string as an RFC 822 date/time.
     *
     * @throws Exception
     * @throws RSSFault  if the string is not a valid RFC 822 date/time
     */
    public static Date parseRfc822(String date) {

        try {
            return formatRFC822.get().parse(date.trim());
        } catch (ParseException e) {
            if (BuildConfig.DEBUG)
                Log.e(TAG, "No parser date " + date);
            return new Date();
        }

    }

    public static String formatTimeMillis(Context context, long timeMillis) {

        StringBuilder sb = new StringBuilder();
        if (timeMillis > 0) {
            try {
                sb.append(android.text.format.DateUtils
                        .getRelativeDateTimeString(context, timeMillis,
                                android.text.format.DateUtils.MINUTE_IN_MILLIS,
                                android.text.format.DateUtils.WEEK_IN_MILLIS,
                                android.text.format.DateUtils.FORMAT_ABBREV_ALL));
            } catch (Throwable e) {
                sb.append(dateFormat.get().format(new Date(timeMillis)));
            }
        }
        return sb.toString();

    }

    public static String formatDate(Date date) {

        StringBuilder sb = new StringBuilder();
        if (date != null) {
            try {
                sb.append(android.text.format.DateUtils.formatSameDayTime(
                        date.getTime(),
                        new Timestamp(System.currentTimeMillis()).getTime(),
                        DateFormat.MEDIUM, DateFormat.SHORT));
            } catch (Throwable e) {
                sb.append(dateFormat.get().format(date));
            }
        }
        return sb.toString();

    }
}