안드로이드 DateTime Format

안드로이드나 자바 개발시 DateTime Format이 필요할때가 있는데

참고하세요.

 

DATE_FORMAT_1 = hh:mm a
The output will be -: 10:37 am
  
DATE_FORMAT_2 = h:mm a
Output will be -: 10:37 am
  
DATE_FORMAT_3 = yyyy-MM-dd
The output will be -: 2018-12-05
  
DATE_FORMAT_4 = dd-MMMM-yyyy
The output will be -: 05-December-2018
  
DATE_FORMAT_5 = dd MMMM yyyy
The output will be -: 05 December 2018
  
DATE_FORMAT_6 = dd MMMM yyyy zzzz
The output will be -: 05 December 2018 UTC
  
DATE_FORMAT_7 = EEE, MMM d, ''yy
The output will be -: Wed, Dec 5, '18
  
DATE_FORMAT_8 = yyyy-MM-dd HH:mm:ss
The Output will be -: 2018-12-05 10:37:43
  
DATE_FORMAT_9 = h:mm a dd MMMM yyyy
The output will be -: 10:37 am 05 December 2018
  
DATE_FORMAT_10 = K:mm a, z
The output will be -: 10:37 am, UTC
  
DATE_FORMAT_11 = hh 'o''clock' a, zzzz
The output will be -: 10 o'clock am, UTC
  
DATE_FORMAT_12 = yyyy-MM-dd'T'HH:mm:ss.SSS'Z'
The output will be -: 2018-12-05T10:37:43.937Z
  
DATE_FORMAT_13 = E, dd MMM yyyy HH:mm:ss z
The output will be -: Wed, 05 Dec 2018 10:37:43 UTC
  
DATE_FORMAT_14 = yyyy.MM.dd G 'at' HH:mm:ss z
The output will be -: 2018.12.05 AD at 10:37:43 UTC
  
DATE_FORMAT_15 = yyyyy.MMMMM.dd GGG hh:mm aaa
The output will be -: 02018.D.05 AD 10:37 am
  
DATE_FORMAT_16 = EEE, d MMM yyyy HH:mm:ss Z
The output will be -: Wed, 5 Dec 2018 10:37:43 +0000
  
DATE_FORMAT_17 = yyyy-MM-dd'T'HH:mm:ss.SSSZ
The output will be -: 2018-12-05T10:37:43.946+0000
  
DATE_FORMAT_18 = yyyy-MM-dd'T'HH:mm:ss.SSSXXX
The output will be -: 2018-12-05T10:37:43.949Z
  
DATE_FORMAT_19 = dd-MMM-yyyy
The output will be -: 05-Dec-2018

1. Current Date

public static final String DATE_FORMAT_1 = "yyyy-MM-dd";

public static String getCurrentDate() {
    SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT);
    Date today = Calendar.getInstance().getTime();
    return dateFormat.format(today);
}

2. Current Time

public static final String DATE_FORMAT_2 = "HH:mm:ss";
  
public static String getCurrentTime() {
    SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT_2);
    Date today = Calendar.getInstance().getTime();
    return dateFormat.format(today);
}

3. DateUtils

package com.mycom.myapp.utils;
  
  
import android.text.format.DateFormat;
  
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
  
public class DateUtils {
  
    private static final String TAG = "DateUtils";
  
    public static final String DATE_FORMAT_1 = "HH:mm:ss";
    public static final String DATE_FORMAT_2 = "h:mm a";
    public static final String DATE_FORMAT_3 = "yyyy-MM-dd";
    public static final String DATE_FORMAT_4 = "dd-MMMM-yyyy";
    public static final String DATE_FORMAT_5 = "dd MMMM yyyy";
    public static final String DATE_FORMAT_6 = "dd MMMM yyyy zzzz";
    public static final String DATE_FORMAT_7 = "EEE, MMM d, ''yy";
    public static final String DATE_FORMAT_8 = "yyyy-MM-dd HH:mm:ss";
    public static final String DATE_FORMAT_9 = "h:mm a dd MMMM yyyy";
    public static final String DATE_FORMAT_10 = "K:mm a, z";
    public static final String DATE_FORMAT_11 = "hh 'o''clock' a, zzzz";
    public static final String DATE_FORMAT_12 = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'";
    public static final String DATE_FORMAT_13 = "E, dd MMM yyyy HH:mm:ss z";
    public static final String DATE_FORMAT_14 = "yyyy.MM.dd G 'at' HH:mm:ss z";
    public static final String DATE_FORMAT_15 = "yyyyy.MMMMM.dd GGG hh:mm aaa";
    public static final String DATE_FORMAT_16 = "EEE, d MMM yyyy HH:mm:ss Z";
    public static final String DATE_FORMAT_17 = "yyyy-MM-dd'T'HH:mm:ss.SSSZ";
    public static final String DATE_FORMAT_18 = "yyyy-MM-dd'T'HH:mm:ss.SSSXXX";
    public static final String DATE_FORMAT_19 = "dd-MMM-yyyy";
  
    public static String getCurrentDate() {
        SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT_3);
        Date today = Calendar.getInstance().getTime();
        return dateFormat.format(today);
    }
  
    public static String getCurrentTime() {
        SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT_1);
        Date today = Calendar.getInstance().getTime();
        return dateFormat.format(today);
    }
  
    /**
     * @param time        in milliseconds (Timestamp)
     * @param mDateFormat SimpleDateFormat
     * @return
     */
    public static String getDateTimeFromTimeStamp(Long time, String mDateFormat) {
        SimpleDateFormat dateFormat = new SimpleDateFormat(mDateFormat);
        Date dateTime = new Date(time);
        return dateFormat.format(dateTime);
    }
  
    /**
     * Get Timestamp from date and time
     *
     * @param mDateTime   datetime String
     * @param mDateFormat Date Format
     * @return
     * @throws ParseException
     */
    public static long getTimeStampFromDateTime(String mDateTime, String mDateFormat) throws ParseException {
        SimpleDateFormat dateFormat = new SimpleDateFormat(mDateFormat);
        Date date = dateFormat.parse(mDateTime);
        return date.getTime();
    }
  
    /**
     * Return  datetime String from date object
     *
     * @param mDateFormat format of date
     * @param date        date object that you want to parse
     * @return
     */
    public static String formatDateTimeFromDate(String mDateFormat, Date date) {
        if (date == null) {
            return null;
        }
        return DateFormat.format(mDateFormat, date).toString();
    }
  
    /**
     *  Convert one date format string  to another date format string in android
     * @param inputDateFormat Input SimpleDateFormat
     * @param outputDateFormat Output SimpleDateFormat
     * @param inputDate  input Date String
     * @return
     * @throws ParseException
     */
    public static String formatDateFromDateString(String inputDateFormat, String outputDateFormat, String inputDate) throws ParseException {
        Date mParsedDate;
        String mOutputDateString;
        SimpleDateFormat mInputDateFormat = new SimpleDateFormat(inputDateFormat, java.util.Locale.getDefault());
        SimpleDateFormat mOutputDateFormat = new SimpleDateFormat(outputDateFormat, java.util.Locale.getDefault());
        mParsedDate = mInputDateFormat.parse(inputDate);
        mOutputDateString = mOutputDateFormat.format(mParsedDate);
        return mOutputDateString;
  
    }
}

감사합니다.