24 hour clock not working in dateformat android

Question

i have made an application in which i need to perform date conversion in 24 hour format. Here is my code.

GregorianCalendar c = new GregorianCalendar(Locale.GERMANY);
            c.set(2011, 04, 29,0,0,0);
            String cdate = (String) DateFormat.format("yyyy-MM-dd HH:mm:ss", c.getTime());
            Log.i(tag,cdate);

now when i check my LOG here is the output:

04-22 12:44:15.956: INFO/GridCellAdapter(30248): 2011-04-29 HH:00:00

why is the hour field not getting set. i have explicitly passed 0 when i was making the calendar object, still it is display HH in the LOG. i have tried while passing hh, that is being set, but HH is not being set.

what could be the problem?

thank you in advance.

score 15 · Answer 1 · edited Feb 23 '12 at 18:08

15

String cdate = (String) DateFormat.format("yyyy-MM-dd kk:mm:ss", c.getTime());

edited Feb 23 '12 at 18:08

animuson

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answered Feb 15 '12 at 08:37

kp666

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HH should be 0-23 according to the documentation, but for me returns HH in the string, if you use kk it gives you 0-23 not 1-24 like it says. http://developer.android.com/reference/java/text/SimpleDateFormat.html – draksia Feb 27 '13 at 19:02
1

HOUR_OF_DAY for Androids DateFormat helper class should return 0 at midnight as stated in the documentation. http://developer.android.com/reference/android/text/format/DateFormat.html#HOUR_OF_DAY – Daniel H. Jul 17 '13 at 07:49

score 10 · Accepted Answer · edited Feb 14 '13 at 18:00

10

Try using SimpleDateFormat, a subclass of DateFormat. That might correct the problems you're having.

e.g. to print current datetime

SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd_H-mm-ss",Locale.US);
String formattedDateString = dateFormat.format(new java.util.Date());
// result is something like "2013-02-14_18-44-15"

edited Feb 14 '13 at 18:00

tmanthey

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answered Apr 22 '11 at 11:59

Rajath

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Suggest you give a link back from your other question (http://stackoverflow.com/questions/5753170/how-to-pass-hour-minute-and-second-in-calendar-object-in-android-java) to here – Rajath Apr 22 '11 at 12:13

score 2 · Answer 3 · answered Aug 17 '11 at 18:35

Try this

Long someLongDate = 240000L 
// I was working with a Long in my own code. 
// I'm sure you can use something like varDate.getLong()
TextView textView = (TextView) view;                 // your view of interest
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");     
textView.setText(sdf.format(new Date(someLongDate)));

If it helped - don't forget to check my post as the answer..

24 hour clock not working in dateformat android

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