package net.the4thdimension.android;
import android.net.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
/***
* Provides helper methods for date utilities.
* Yes, some times I write shit code.
*/
public class DateUtils {
/***
* Converts ISO date string to UTC timezone equivalent.
*
* @param dateAndTime ISO formatted time string.
*/
public static String getUtcTime(String dateAndTime) {
Date d = parseDate(dateAndTime);
String format = "yyyy-MM-dd'T'HH:mm:ss'Z'";
SimpleDateFormat sdf = new SimpleDateFormat(format, Locale.getDefault());
// Convert Local Time to UTC
sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
return sdf.format(d);
}
/****
* Parses date string and return a {@link java.util.Date} object
*
* @return The ISO formatted date object
*/
public static Date parseDate(String date) {
if (date == null) {
return null;
}
StringBuffer sbDate = new StringBuffer();
sbDate.append(date);
String newDate = null;
Date dateDT = null;
try {
newDate = sbDate.substring(0, 19).toString();
} catch (Exception e) {
e.printStackTrace();
}
String rDate = newDate.replace("T", " ");
String nDate = rDate.replaceAll("-", "/");
try {
dateDT = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.getDefault()).parse(nDate);
// Log.v( TAG, "#parseDate dateDT: " + dateDT );
} catch (ParseException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return dateDT;
}
/***
* Converts UTC time formatted as ISO to device local time.
* <p>
* <br/>
* <br/>
* Sample usage
* <p>
* <pre>
*
* {
* SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
* d = toLocalTime("2014-10-08T09:46:04.455Z", sdf);
* }
* </pre>
*
* @param utcDate
* @param format
* @return Date
* @throws Exception
*/
public static Date toLocalTime(String utcDate, SimpleDateFormat sdf) throws Exception {
// create a new Date object using
// the timezone of the specified city
sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
Date localDate = sdf.parse(utcDate);
sdf.setTimeZone(TimeZone.getDefault());
String dateFormateInUTC = sdf.format(localDate);
return sdf.parse(dateFormateInUTC);
}
/**
* Returns abbreviated (3 letters) day of the week.
*
* @param date ISO format date
* @return The name of the day of the week
*/
public static String getDayOfWeekAbbreviated(String date) {
Date dateDT = parseDate(date);
if (dateDT == null) {
return null;
}
// Get current date
Calendar c = Calendar.getInstance();
// it is very important to
// set the date of
// the calendar.
c.setTime(dateDT);
int day = c.get(Calendar.DAY_OF_WEEK);
String dayStr = null;
switch (day) {
case Calendar.SUNDAY:
dayStr = "Sun";
break;
case Calendar.MONDAY:
dayStr = "Mon";
break;
case Calendar.TUESDAY:
dayStr = "Tue";
break;
case Calendar.WEDNESDAY:
dayStr = "Wed";
break;
case Calendar.THURSDAY:
dayStr = "Thu";
break;
case Calendar.FRIDAY:
dayStr = "Fri";
break;
case Calendar.SATURDAY:
dayStr = "Sat";
break;
}
return dayStr;
}
/***
* Gets the name of the month from the given date.
*
* @param date ISO format date
* @return Returns the name of the month
*/
public static String getMonth(String date) {
Date dateDT = parseDate(date);
if (dateDT == null) {
return null;
}
// Get current date
Calendar c = Calendar.getInstance();
// it is very important to
// set the date of
// the calendar.
c.setTime(dateDT);
int day = c.get(Calendar.MONTH);
String dayStr = null;
switch (day) {
case Calendar.JANUARY:
dayStr = "January";
break;
case Calendar.FEBRUARY:
dayStr = "February";
break;
case Calendar.MARCH:
dayStr = "March";
break;
case Calendar.APRIL:
dayStr = "April";
break;
case Calendar.MAY:
dayStr = "May";
break;
case Calendar.JUNE:
dayStr = "June";
break;
case Calendar.JULY:
dayStr = "July";
break;
case Calendar.AUGUST:
dayStr = "August";
break;
case Calendar.SEPTEMBER:
dayStr = "September";
break;
case Calendar.OCTOBER:
dayStr = "October";
break;
case Calendar.NOVEMBER:
dayStr = "November";
break;
case Calendar.DECEMBER:
dayStr = "December";
break;
}
return dayStr;
}
/**
* Gets abbreviated name of the month from the given date.
*
* @param date ISO format date
* @return Returns the name of the month
*/
public static String getMonthAbbreviated(String date) {
Date dateDT = parseDate(date);
if (dateDT == null) {
return null;
}
// Get current date
Calendar c = Calendar.getInstance();
// it is very important to
// set the date of
// the calendar.
c.setTime(dateDT);
int day = c.get(Calendar.MONTH);
String dayStr = null;
switch (day) {
case Calendar.JANUARY:
dayStr = "Jan";
break;
case Calendar.FEBRUARY:
dayStr = "Feb";
break;
case Calendar.MARCH:
dayStr = "Mar";
break;
case Calendar.APRIL:
dayStr = "Apr";
break;
case Calendar.MAY:
dayStr = "May";
break;
case Calendar.JUNE:
dayStr = "Jun";
break;
case Calendar.JULY:
dayStr = "Jul";
break;
case Calendar.AUGUST:
dayStr = "Aug";
break;
case Calendar.SEPTEMBER:
dayStr = "Sep";
break;
case Calendar.OCTOBER:
dayStr = "Oct";
break;
case Calendar.NOVEMBER:
dayStr = "Nov";
break;
case Calendar.DECEMBER:
dayStr = "Dec";
break;
}
return dayStr;
}
/**
* Gets a string TimeStamp phrase like 5 mins ago
* yesterday, 3 days ago.
*
* <br/>
* <br/>
*
* sample usage
*
* * <pre>
*
* {
* String timeStamp = getTimeStamp(originalDate);
*
* }
* </pre>
*
* @param originalDate
* @return convertedDate String
*
*/
public static String getTimeStamp(Date originalDate){
String convertedDate = DateUtils.getRelativeTimeSpanString(originalDate.getTime(),
new Date().getTime(),
DateUtils.SECOND_IN_MILLIS).toString();
return convertedDate;
}
/**
* Gets a string TimeStamp phrase like 5 mins ago
* yesterday, 3 days ago.
*
* <br/>
* <br/>
*
* sample usage
*
* * <pre>
*
* {
* String timeStamp = getTimeStamp(originalDate);
*
* }
* </pre>
*
* @param originalDateTime time in miliseconds since epoch
* @return convertedDate String
*
*/
public static String getTimeStamp(Long originalDateTime) {
String convertedDate = DateUtils.getRelativeTimeSpanString(originalDateTime,
new Date().getTime(),
DateUtils.SECOND_IN_MILLIS).toString();
return convertedDate;
}
}
