Android Open Source - PhoneGap-Calendar-Plugin Date Utils

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License

The source code is released under:

Apache License

Java Source Code

/*
 *  Copyright 2011 Vodafone Group Services Ltd.
 *//  w ww.  j a v a2s .  c  o m
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *    
 */

package com.phonegap.calendar.android.utils;

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

import android.util.Log;


/**
 * This class give some useful operations in order to work with
 * dates
 * @author Sergio Martinez Rodriguez
 *
 */
public class DateUtils {

  private static final String TAG = "DateUtils";
  
   /**
   * Parse any string date with given format or default "yyyy-MM-dd'T'HH:mm:ss" into a Date element
   * if there is any error in the parser process this method launch an exception,
   * the returned element has GTM time 
   * and returns null.
   * @param dateString date as string
   * @param format String format of given String date 
   * @return GTM Date corresponding to the given String date
   */
  public static Date stringCalendarDateToDateGTM(String dateString, String format) {
    Date date = null;
    SimpleDateFormat dformat;
    if (format==null)
      dformat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
    else
      dformat = new SimpleDateFormat(format);
    try {
        date = dformat.parse(dateString);
    } catch (ParseException parseException) {
      parseException.printStackTrace();
      return null;      
    }
    return date;
  }
  
  /**
   * Parse any string date with given or default "yyyy-MM-dd'T'HH:mm:ss" format into a Date element
   * if there is any error in the parser process this method launch an exception,
   * the returned element has device Locale time 
   * and returns null.
   * @param dateString date as string
   * @param format String format of given String date 
   * @return Locale Date corresponding to the given String date
   */
  public static Date stringCalendarDateToDateLocale(String dateString, String format) {
    Date date = null;
    SimpleDateFormat dformat;
    if (format==null)
      dformat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
    else
      dformat = new SimpleDateFormat(format);
    try {
        date = dformat.parse(dateString);
      
    } catch (ParseException parseException) {
      parseException.printStackTrace();
      return null;      
    }

    TimeZone tm = TimeZone.getDefault();
    
    tm.setID(Locale.getDefault().getISO3Country());
    date = new Date(date.getTime()+tm.getOffset(date.getTime()));

    return date;
  }
  
  /**
   * Parse any date into given string or default "yyyy-MM-dd'T'HH:mm:ss" format 
   * @param date Date object we want to transform into String
   * @param format String format of desired String date
   * @return String date corresponding with given String Date object
   */
  public static String dateToStringCalendarDate(Date date, String format){
    SimpleDateFormat dformat;
    if (format==null)
      dformat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
    else
      dformat = new SimpleDateFormat(format);
    if (date != null) {
      return dformat.format(date);
    } else {
      return "NOT VALID STRING FORMAT";
    }
  }
  
}

Java Source Code List

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