I m developing android application. I need to convert datetime into date. I want to convert '25-07-2013 11:44AM' (datetime) into '25-07-2013' (date).
I am trying this function to convert SELECT date('25-07-2013 11:44AM'), but it was not working.Please suggest some solution for this problem.
According to this page, it does not seem that am/pm times are supported in date SQLite function (this should be noted as h or K according to the date format specification of Java at least; also it is explicitly mentioned %H hour: 00-24). Maybe experiment if using 24 hour clock will not trigger the issue.
I am not sure if you are search for Java code or SQL code , but if it is Java code then solution could be this :
String date = "25-07-2014 11:44AM";
SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");
String newDate = dateFormat.format(dateFormat.parse(date));
System.out.println(newDate);
If in case your are looking for SQL code let me know I will share that as well.
Related
I have a date string like 2021-02-20 12:24:10 and I need to parse it to Date. I have the solution, which works on Nougat (API 24) and higher, but I need need the solution for Lollipop (API 21). The solution for Nougat is below
val parser = SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
val entryDate: Date = parser.parse(ticketResponse.entryDate)
I tried to use DateFormat, but I get ParseException when I try to parse my date
val entryDate: Date = DateFormat.getInstance().parse(ticketResponse.entryDate)
I understand it happens because my input string is not a standard representation of date, but I cannot easy change it, I get this date from server. I also didn't find way to set pattern for input date like for SimpleDateFormat.
I am surprised that where is no answer here in some old questions, all answers recommend to use SimpleDateFormat. Of course I can split date with dividers, but I would like to use not so bold approach.
if you haven't noticed there are two SimpleDateFormat classes with a different package: java.text.SimpleDateFormat; and android.icu.text.SimpleDateFormat;
please try to use the first one it is added in api level 1 chek this link :
https://www.datetimeformatter.com/how-to-format-date-time-in-kotlin/
I have an SQLite database in an Android project with a Date column that stores the date-time as String in dd-mm-yyyy HH-mm-ss format. I need to sort it based on the descending order of the date.
Or, convert it to the standard yyyy-MM-dd HH-mm-ss format and then sort it.
The general ORDER BY DATETIME(coulmn_name) doesnt work.
NOTE:
This is not a duplicate question, other answers advice to change the database schema (Which is not possible, because I have data stored already)
I would like to suggest an alternative approach to the one you are taking. I personally ran into the same issue and solved it by not using a string date at all.
Instead i converted the date to epoch milliseconds ie unix timestamp and saved that. Then a sort is a simple order by the timestamp.
You can use the following approach:
SimpleDateFormat sdf = new SimpleDateFormat ("dd-MM-yyyy HH:mm:ss");
Date currentDate = sdf.parse(yourdatestring);
//Get the calendar in the time zone you need, generally it works off the bat with the default time zone
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("yourtz"));
cal.setTime(currentDate);
//Get the milliseconds since epoch time
long millis = cal.getTimeInMillis();
You can save this timestamp and easily sort it. It'll be more accurate and easy to use than a string and potentially gives you the ability to handle different time zones.
You can retrieve the date by setting this timestamp directly in the calendar and getting a date from it
cal.setTimeInMillis(timestamp).getTime();
Hope this helps
I have a database in my Android app that has dates formatted like this: 201274 for July 4, 2012 and 20121016 for October 16, 2012. I display the date of the DB row using SimpleDateFormat so that for today, it grabs the date 20121016 and displays 2012-10-16. The code is like so:
private void convertDBdate() {
convertDateTextView.setText(gotDt);
String dateStr = convertDateTextView.getText().toString();
SimpleDateFormat inputFormatter = new SimpleDateFormat("yyyyMd");
SimpleDateFormat outputFormatter = new SimpleDateFormat("yyyy-MM-dd");
try {
DBdate = inputFormatter.parse(dateStr);
dashDateStr = outputFormatter.format(DBdate);
convertFinalDateTV.setText(dashDateStr);
} catch (ParseException e ) {
e.printStackTrace();
}
With this code, 201274 displays fine as 2012-07-04, but two digit months display incorrectly, 20121016 shows as 2012-01-16 (January 16). The problem is in the MM and dd. I've tried yyyy-M-dd as the output date format, but that shows 2012-1-16 (again, January 16).
Do I have to somehow isolate the M value and do that month + 1 thing? If so how would that be written, and where would it go?
I don't want to have to re-write the dates in the database to 20120704 for July 4, 2012, I'd like to be able to fix it in code.
Your problem isn't that the input formatter should always be yyyyMMdd but that sometimes it should be yyyyMMdd
in the case of 201274 then an input format of MM won't apply but in the case of 20121016 then it will.
You'll need to add some logic parsing the length of the input and choosing the appropriate formatter.
Before I could suggest some logic I'd need to ask two questions
How do you represent 2012-10-01 in the database? I guess that it's 2012101 in which case...
How do you distinguish between 2012111 and 2012111? i.e. 2012-11-01 and 2012-01-11
maybe to late for this project but for future projects I would always recommend to use
Date.getTime()
http://docs.oracle.com/javase/1.4.2/docs/api/java/util/Date.html#getTime()
for storing even dates as it will take less space in the database, will make sorting faster and you just avoid problems you have right now.
I need to communicate with one application that is not implementing the full ISO 8601 and only accept the format +HH:mm for time zone offset.
Android seems to only generate the format +HHmm (no ':' character in between hours and minutes) with the 'z' in SampleDateFormat.
Code example:
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
String str = String.format(Locale.US, "%s", sdf.format(new Date(0)));
generates: 1970-01-01T00:00+0000
and I would like to generate: 1970-01-01T00:00+00:00
Is there any simple way of producing the desirable output without writing the code to manipulate the string?
Thanks,
Luis
I think the easiest way is to manipulate a string.
a) SimpleDateFormat doesn't support what you need.
b) The method appendNumericTimeZone in SimpleDateFormat class is private. So, you can't override it.
2) You can create your own formater (implement java.text.DataFormat). However, it will be way more hassle than string manipulation.
BTW. Interesting thing which I found while looking into SimpleDateFormat source code. There is some code which generates almost what you need (it adds to the end "GMT+XX:XX"). However, this code will be only called, if you specified "Z" in the format and system can't find a timezone name for current timezone.
I am trying to get the present time in this format in an android app. time= "05:09pm 08/02/2011" Right now I am using Calendar c=Calendar.getInstance() and c.getTime() to get the time and its coming out as Tue Aug 23 02:34:25 PDT 2011.
Thanks
You need to use the DateFormat Class
Something like this will get you the current time in the format you desire.
DateFormat.format("hh:mmaa dd/MM/yyyy", System.currentTimeMillis());
Use a SimpleDateFormat.
Format should be like
SimpleDateFormat sdf = new SimpleDateFormat( "HH:mma dd/MM/yyyy" );
sdf.format( yourDate );
Regards,
Stéphane
There are many ways to do that in Android. You can use the SimpleDateFormat wich is a class for formatting and parsing dates. Formatting turns a Date into a String, and parsing turns a String into a Date. Or you can the class Formatter wich is low level but managing the localization is your responsibility.
You may find source code example on the Android javadoc on those classes