Develop Reference

Android timezone issue, confused

I have a date like this Tue Jun 21 14:47:37 GMT+05:30 2016 , which I create myself. I create it using calendar. Where user selects a date and I save it as milliseconds from calendar.
When I send it , send it, I again create a calendar instance put the saved milliseconds into it and get the date like this :
Calendar calendar = Calendar.getInstance();
calendar.setTimeZone(TimeZone.getDefault());
calendar.setTimeInMillis(SSPreferences.getDate());
Now while getting date from calendar i do this :
calendar.getTime()//This is what I send to server.
I send it to server, but when server sends me the date, it is always 5.5 hours before my time.
I know my time is GMT+5:50. So what server is doing on its side ?
How do I send the date , such that I get back the same date which I sent to the server.
Any help is appreciated.
Thanks

check this
static final String DATEFORMAT = "yyyy-MM-dd HH:mm:ss"
public static Date GetUTCdatetimeAsDate()
{
//note: doesn't check for null
return StringDateToDate(GetUTCdatetimeAsString());
}
public static String GetUTCdatetimeAsString()
{
final SimpleDateFormat sdf = new SimpleDateFormat(DATEFORMAT);
sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
final String utcTime = sdf.format(new Date());
return utcTime;
}
public static Date StringDateToDate(String StrDate)
{
Date dateToReturn = null;
SimpleDateFormat dateFormat = new SimpleDateFormat(DATEFORMAT);
try
{
dateToReturn = (Date)dateFormat.parse(StrDate);
}
catch (ParseException e)
{
e.printStackTrace();
}
return dateToReturn;
}

Finally I solved the issue by adding/subtracting the rawOffSet from the local time zone.
TimeZone timeZone = TimeZone.getDefault();
int offset = timeZone.getOffset(SSPreferences.getDate());
WriteLog.Print("offset is "+offset);
long newtime = SSPreferences.getDate() + offset;
calendar.setTimeInMillis(newtime);

To get Date and time from Timestamp Android

I want to get time and date separately from timestamp.Please help me in these. My example of timestamp is 1378798459.
Thanks

//Try the following
SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
String dateString = formatter.format(new Date(Long.parseLong(YOUR TIMESTAMP VALUE)));
txtDate.setText(dateString);
//You can put your needed format here:
SimpleDateFormat formatter = new SimpleDateFormat("YOUR REQUIRED FORMAT");

Try this is working with me
public String getDateCurrentTimeZone(long timestamp) {
try{
Calendar calendar = Calendar.getInstance();
TimeZone tz = TimeZone.getDefault();
calendar.setTimeInMillis(timestamp * 1000);
calendar.add(Calendar.MILLISECOND, tz.getOffset(calendar.getTimeInMillis()));
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date currenTimeZone = (Date) calendar.getTime();
return sdf.format(currenTimeZone);
}catch (Exception e) {
}
return "";
}

Improving upon the answer given by Pratik Dasa
SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
Here you can get various formats using the following syntax. You can play around with it by deleting or adding terms given below in the syntax.
Date and Time Pattern Result
----------------------------- ---------------------------------
"yyyy.MM.dd G 'at' HH:mm:ss z" 2001.07.04 AD at 12:08:56 PDT
"EEE, MMM d, ''yy" Wed, Jul 4, '01
"h:mm a" 12:08 PM
"hh 'o''clock' a, zzzz" 12 o'clock PM, Pacific Daylight Time
"K:mm a, z" 0:08 PM, PDT
"yyyyy.MMMMM.dd GGG hh:mm aaa" 02001.July.04 AD 12:08 PM
"EEE, d MMM yyyy HH:mm:ss Z" Wed, 4 Jul 2001 12:08:56 -0700
"yyMMddHHmmssZ" 010704120856-0700
"yyyy-MM-dd'T'HH:mm:ss.SSSZ" 2001-07-04T12:08:56.235-0700
"yyyy-MM-dd'T'HH:mm:ss.SSSXXX" 2001-07-04T12:08:56.235-07:00
"YYYY-'W'ww-u" 2001-W27-3

String time = DateUtils.formatDateTime(this, 1378798459, DateUtils.FORMAT_SHOW_TIME);
String date = DateUtils.formatDateTime(this, 1378798459, DateUtils.FORMAT_SHOW_DATE);

Try this,
final Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(System.currentTimeMillis());
Date date = cal.getTime();
mHour = date.getHours();
mMinute = date.getMinutes();

Only that:
long timestampString = Long.parseLong("yourString");
String value = new java.text.SimpleDateFormat("dd/MM/yyyy HH:mm:ss").
format(new java.util.Date(timestampString * 1000));

long dv = Long.valueOf(timestamp_in_string)*1000;// its need to be in milisecond
Date df = new java.util.Date(dv);
String vv = new SimpleDateFormat("MM dd, yyyy hh:mma").format(df);
From here.

you can use this
Long tsLong = System.currentTimeMillis();
String ts = tsLong.toString();
long millisecond = Long.parseLong(ts);
datetimeString = DateFormat.format("MM-dd-yyyy hh:mm:ss a", new Date(millisecond)).toString();
timeString = datetimeString.substring(11);
dateString = datetimeString.substring(0,10);
String t2 = datetimeString.substring(20,21);
The datetimeString contains the Date Time AM/PM data
timeString will give you the substring which contains the time only and the dateString is substring for date
The String t2 will give you whether it is AM or PM in the clock

int day, month, year;
int second, minute, hour;
GregorianCalendar date = new GregorianCalendar();
day = date.get(Calendar.DAY_OF_MONTH);
month = date.get(Calendar.MONTH);
year = date.get(Calendar.YEAR);
second = date.get(Calendar.SECOND);
minute = date.get(Calendar.MINUTE);
hour = date.get(Calendar.HOUR);
String data =(hour+ ':'+ ""+minute+ ':'+"" +second+"" +""+"" +day+"" +"/" +(month+1)+"" +"/"+ +year);
Toast.makeText(getActivity(), "Time stamp:"+data,Toast.LENGTH_LONG).show();

DateFormat dateFormat = DateFormat.getDateTimeInstance();
when.setText(dateFormat.format(new Date(timestamp * 1000)));
The timestamp is multiplied by 1000 for converting the seconds into milliseconds.

All the answers are great and they mainly focus on converting the unix timestamp to milliseconds first, which is correct.
I struggled to apply that because I must use 1000L in the conversion (instead of 1000 only). Here's my working code with time zone conversion
// Set TimeZone
SimpleDateFormat dateFormat = new SimpleDateFormat("MM-dd-yy h:mm a", Locale.US);
dateFormat.setTimeZone(getDeviceTimeZone());
// Set time
Date date = new Date(timestamp * 1000L);
return dateFormat.format(date);
For Android API 26 and above, you can just do
return Instant.ofEpochSecond( timestamp )
.atZone(ZoneId.of( timezone ))
.toLocalDateTime()
.toString();

The very best way to get day and date from the timestamp is that:
java.util.Date dayAndDate = new java.util.Date( (long) yourTimeStamp * 1000);
// object coming as like: Tue Feb 09
String day = dayAndDate.toString().split(" ")[0];
String month = dayAndDate.toString().split(" ")[1];
String date = dayAndDate.toString().split(" ")[2];
I hope you will like my approach, if you have liked it, don't forget to give it an upvote, so that others will consider it.

If you want to use time like in a WhatsApp message, You can use this method,
public static String millisToDateChat(long time) {
long currentTime = System.currentTimeMillis();
long defe = currentTime - time;
long time_in;
if(time!=0){
time_in = time;
}else{
time_in = currentTime;
defe = 0;
}
int s = (int)defe/1000;
int m = (int)defe/(1000*60);
int h = (int)defe/(1000*60*60);
int d = (int)defe/(1000*60*60*24);
int w = (int)defe/(1000*60*60*24*7);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(time_in);
Date date = calendar.getTime();
#SuppressLint("SimpleDateFormat") String formattedDate=(new SimpleDateFormat("HH:mm")).format(date);
#SuppressLint("SimpleDateFormat") String formattedYear=(new SimpleDateFormat("MMM d, ''yy")).format(date);
#SuppressLint("SimpleDateFormat") String formattedm=(new SimpleDateFormat("MMM d")).format(date);
if(d>365) {
return formattedYear;
}else if(s>172000){
return formattedm;
}else if(s>86400) {
return "Yest.";
}else{
return formattedDate;
}
}

Convert Date to Year and Month

I am writing an application in which I have to display a date . Now I want to convert that date into Year and Month from the Current Date.
My Date is Like - 29/03/2017.
I want to convert this date into Year and Months.
Sorry I think you are not able to understand my question. I want the Difference of current date and above date in year and months.
Sorry for my explanation.

You can use Joda Time and compute a Period between two LocalDate values (which is what you've got here) using months and years as the units.
example
LocalDate dob = new LocalDate(1992, 12, 30);
LocalDate date = new LocalDate(2010, 12, 29);
Period period = new Period(dob, date, PeriodType.yearMonthDay());
System.out.println(period.getYears() + " years and " +
period.getMonths() + " months");

I found my answer using Calender class .
First i find the difference between two days and using that days i found the years and months.
Here i post my code, which i think help to others.
int days = Integer.parseInt(Utility.getDateDiffString("29/03/2017"));
int years = days/365;
int remainingDays = days - (365*years);
int months = remainingDays/30;
getDateDiffString() Method. In this method we need to pass end date
public static String getDateDiffString(String endDate)
{
try
{
Calendar cal = Calendar.getInstance();
SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
Date dateTwo = dateFormat.parse(endDate);
long timeOne = cal.getTimeInMillis();
long timeTwo = dateTwo.getTime();
long oneDay = 1000 * 60 * 60 * 24;
long delta = (timeTwo - timeOne) / oneDay;
if (delta > 0) {
return "" + delta + "";
}
else {
delta *= -1;
return "" + delta + "";
}
}
catch (Exception e)
{
e.printStackTrace();
}
return "";
}

if your date's format is fixed, you can do it like this :
String myDate = "29/03/2017";
String newDate = myDate.subString(6, 10) + "-" + myDate.subString(3, 5)

this method to convert the normal string to date format
String currentDateString = "02/27/2012 17:00:00";
SimpleDateFormat sd = new SimpleDateFormat("mm/dd/yyyy HH:mm:ss");
Date currentDate = sd.parse(currentDateString);
after that you get the formal method

You Should use SimpleDateFormate !
For Example:--- You can get time & Date as you want:-
Date email_date = m.getSentDate();// this is date which you are getting
DateFormat date = new SimpleDateFormat("EEE MMM yyyy");
DateFormat time = new SimpleDateFormat("hh:mm aa");
String date_str=date.format(email_date);
String time_str=time.format(email_date);

Use Java Calendar class to get year from date
Calendar c=Calendar.getInstance();
SimpleDateFormat simpleDateformat=new SimpleDateFormat("yyyy MMM");
System.out.println(simpleDateformat.format(c.getTime()));
To get difference between two date
int diffInDays = (int)( (newerDate.getTime() - olderDate.getTime())
/ (1000 * 60 * 60 * 24) )

long timeDiff = (d1.getTime() - d2.getTime());
String diff=String.format("%d year(s) %d day(s) %d hour(s) %d min(s) %d sec(s)",(TimeUnit.MILLISECONDS.toDays(timeDiff)/365),TimeUnit.MILLISECONDS.toDays(timeDiff)%365,
TimeUnit.MILLISECONDS.toHours(timeDiff)
- TimeUnit.DAYS.toHours(TimeUnit.MILLISECONDS
.toDays(timeDiff)),
TimeUnit.MILLISECONDS.toMinutes(timeDiff)
- TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS
.toHours(timeDiff)),
TimeUnit.MILLISECONDS.toSeconds(timeDiff)
- TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS
.toMinutes(timeDiff)));
System.out.println(diff);
Specify correct date here in d1 & d2.Then you will get right answer of difference

First put your Date into a String variable as:
String dateToConvert = "29/03/2017";
Instantiate Calendar as:
Calendar convertedDate = Calendar.getInstance();
Set that date to calendar
convertedDate.set(dateToConvert);<br/>
Then use this line:
String datePicked = DateFormat.getDateInstance().format(convertedDate.getTime());
Output: Mar 29, 2017

Incorrect Result: Formatting ISO-8601 Time And Extract 12 Hour Time

I am fetching Newsfeeds from the Facebook API using FQL which returns a "created_time" field as a UNIX Timestamp. I am converting that into, what I believe is a ISO-8601 timestamp using this piece of code:
String getInitialCreatedTime = JOFeeds.getString("created_time");
long finalTimeStamp = Long.valueOf(getInitialCreatedTime);
SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ssZ");
String finalCreatedTime = dateFormatter.format(new Date(finalTimeStamp * 1000L));
Now, from the String, finalCreatedTime I want to extract just the time in 12 Hour (AM/PM) format.
To that effect, I am using this code:
final String old_format = "yyyy-MM-dd'T'HH:mm:ssZ";
final String new_format = "EEE MMM d hh:mm aa yyyy";
String oldDateSring = finalCreatedTime;
SimpleDateFormat sdf = new SimpleDateFormat(old_format);
Date d = sdf.parse(oldDateSring);
sdf.applyPattern(new_format);
Calendar cal = Calendar.getInstance();
cal.setTime(d);
And:
// GET THE TIME
SimpleDateFormat sdfTimeFormatter = new SimpleDateFormat("hh:mm aa");
String getTime = sdfTimeFormatter.format(cal.getTime());
feeds.setTime(getTime);
Log.e("TIME", getTime);
The result of the first code block is: 2012-12-14T04:30:03+0530
And the result from the // GET THE TIME block is 04:30AM when it should be 04:30PM.
I would appreciate any pointers on this. Perhaps, I am implementing it wrong?
EDIT: I might add, that timestamps that fall between 12.00 PM and 1.00 PM are handled properly and show PM as they should.

You have :
String getInitialCreatedTime = JOFeeds.getString("created_time");
long finalTimeStamp = Long.valueOf(getInitialCreatedTime);
// Note 8601 is written with 'HH'
SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
So far, so good. But then you need to create a date from this.
Date date = new Date(finalTimeStamp * 1000L)
Then, you need to format what you need (and never EVER parse a date you just formatted. That makes no sense at all).
String finalCreatedTime = dateFormatter.format(date); // Not sure if you need this one
And
SimpleDateFormat sdfTimeFormatter = new SimpleDateFormat("hh:mm aa");
String getTime = sdfTimeFormatter.format(date);
feeds.setTime(getTime);

Android: Date (year,month,day) [duplicate]

This question already has answers here:
How to compare dates in Java? [duplicate]
(11 answers)
Closed 2 years ago.
I want to get the date as a year, month ,day without hours or minutes or any thing else, and I don't want to get the year alone and the month and the day each by its self. Because as a full date I need it to comparison with another date
such as today 28.11.2012 and to compare it to 11.12.2011
as if today minus 11.12.2011 more than 280 day I want to execute some code

you can use SimpleDateFormat.
The basics for getting the current date
DateFormat df = new SimpleDateFormat("MMM d, yyyy");
String now = df.format(new Date());
or
DateFormat df = new SimpleDateFormat("MM/dd/yy");
String now = df.format(new Date());
EDITED :
First of All you have the date in String Formate. you have to Convert into date Formate. try below code to do that. you have apply same for both the String strThatDay & strTodaDay you will get Calender Object for both.
String strThatDay = "2012/11/27";
SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd");
Date d = null;
try {
d = formatter.parse(strThatDay);//catch exception
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Calendar thatDay = Calendar.getInstance();
thatDay.setTime(d);
after that try below code to get Day from two Date :
long diff = today.getTimeInMillis() - thatDay.getTimeInMillis(); //result in millis
long days = diff / (24 * 60 * 60 * 1000);
try it out. Hope it will help you.

Always use Simpledateformat(yyyy/mm/dd) for comparision..
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
String currentDateandTime = sdf.format(new Date());
Use this currentDateandTime to compare with other date.
I think this may be a solution.U have to get instance of 2 calendar (1 for current date and another for compare date.
Calendar cal1=Calendar.getInstance();
Date dt=null;
try{
dt = sdf.parse(currentDateandTime);
cal1.setTime(dt);
}catch (ParseException e){
e.printStackTrace();
}
int currentDaycmp= cal1.get(Calendar.DAY_OF_MONTH);
int currentMonthcmp=cal1.get(Calendar.MONTH);
int currentYearcmp=cal1.get(Calendar.YEAR);
Calendar cal2=Calendar.getInstance();
Date dtend=null;
try{
dtend = sdf.parse(comparedate);
cal2.setTime(dtend);
} catch (ParseException e) {
e.printStackTrace();
}
int currentDayend= cal2.get(Calendar.DAY_OF_MONTH);
int currentMonend=cal2.get(Calendar.MONTH);
int currentyearend=cal2.get(Calendar.YEAR);
now find the difference
currentDaycmp-currentDayend(your condition)..then execute your block..
U try this..May be meet ur requirement..

You may want to use Joda-Time for this:
final DateTimeFormatter formatter = DateTimeFormat.forPattern("dd.MM.yyyy");
LocalDate first = LocalDate.parse("28.11.2012", formatter);
// LocalDate first = new LocalDate(2012, 11, 28);
// LocalDate first = LocalDate.now();
LocalDate second = LocalDate.parse("11.12.2011", formatter);
int daysBetween = Days.daysBetween(first, second).getDays();
You should be aware of that daysBetween is a negative value if the second date is before the first like in this example.
For the given example daysBetween is -353.

You can use the compareTo method.
Firstly, make sure that the two dates you are using have the same format. That is, if one is YYYY,DD,MM then the other would be the same.
SimpleDateFormat sdf = new SimpleDateFormat("YYYY-MM-dd");
Date firstDate = sdf.parse("2012-11-27");
System.out.println(sdf.format(firstDate));
And then you would do a firsDate.compareTo(SecondDate);
if firstDate.compareTo(SecondDate) < 280 {
...
}

Calendar todayCalendar = new GregorianCalendar();
Calendar pickedDateCalendar = new GregorianCalendar();
todayCalendar.set(currentYear,currentMonth,currentDay);
pickedDateCalendar.set(birthDayDatePicker.getYear(),birthDayDatePicker.getMonth(),birthDayDatePicker.getDayOfMonth());
System.out.println("Days= "+daysBetween(todayCalendar.getTime(),pickedDateCalendar.getTime()));
int Days = daysBetween(todayCalendar.getTime(),pickedDateCalendar.getTime());
public int daysBetween(Date d1, Date d2){
return (int)( (d2.getTime() - d1.getTime()) / (1000 * 60 * 60 * 24));
}