DateHelper.java

DateHelper.java

import android.text.format.DateFormat;

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

/**
 * DateHelper
 *
 * Created by TheFinestArtist
 */
public class DateHelper {

    public static String SERVER_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.'000Z'";
    public static String POST_FORMAT = "yy/MM/dd HH:mm";
    public static String CLICKER_FORMAT = "yyyy/MM/dd kk:mm";
    public static String DATE_FORMAT = "yyyy/MM/dd";
    public static String TIME_FORMAT = "HH:mm";
    private static SimpleDateFormat server_format = new SimpleDateFormat(SERVER_FORMAT);
    private static SimpleDateFormat post_format = new SimpleDateFormat(POST_FORMAT);
    private static SimpleDateFormat date_format = new SimpleDateFormat(DATE_FORMAT);
    private static SimpleDateFormat time_format = new SimpleDateFormat(TIME_FORMAT);

    private DateHelper() {
    }

    public static synchronized long getCurrentGMTTimeMillis() {
        final Date currentTime = new Date();
        final SimpleDateFormat sdf = new SimpleDateFormat(SERVER_FORMAT);
        sdf.setTimeZone(TimeZone.getTimeZone("GMT"));
        String time = sdf.format(currentTime);
        return getTime(time);
    }

    public static String getCurrentTimeString() {
        return (String) DateFormat.format(CLICKER_FORMAT, System.currentTimeMillis());
    }

    public static long getTime(String timeStr) {
        Date date;
        try {
            server_format.setTimeZone(TimeZone.getTimeZone("GMT"));
            date = server_format.parse(timeStr);
            return date.getTime();
        } catch (ParseException e) {
            return 0;
        }
    }

    public static Date getDate(String timeStr) {
        Date date;
        try {
            server_format.setTimeZone(TimeZone.getTimeZone("GMT"));
            date = server_format.parse(timeStr);
            return date;
        } catch (ParseException e) {
            return null;
        }
    }

    public static String getPostFormatString(String timeStr) {
        Date date;
        try {
            server_format.setTimeZone(TimeZone.getTimeZone("GMT"));
            post_format.setTimeZone(TimeZone.getDefault());
            date = server_format.parse(timeStr);
            return post_format.format(date);
        } catch (ParseException e) {
            return null;
        }
    }

    public static String getDateFormatString(String timeStr) {
        Date date;
        try {
            server_format.setTimeZone(TimeZone.getTimeZone("GMT"));
            date_format.setTimeZone(TimeZone.getDefault());
            date = server_format.parse(timeStr);
            return date_format.format(date);
        } catch (ParseException e) {
            return null;
        }
    }

    public static String getTimeFormatString(String timeStr) {
        Date date;
        try {
            server_format.setTimeZone(TimeZone.getTimeZone("GMT"));
            time_format.setTimeZone(TimeZone.getDefault());
            date = server_format.parse(timeStr);
            return time_format.format(date);
        } catch (ParseException e) {
            return null;
        }
    }

}