I having a problem when convert String to Date in Blackberry SDK. Please support for me.
This is my code:
String date = "Mon May 09 09:00:00 GMT 2011";
Date formatter = new Date();
formatter.setTime(HttpDateParser.parse(date));
SimpleDateFormat dateFormat = new SimpleDateFormat(formatStr);
string dateString = dateFormat.format(formatter);
purpsoe of the function is format date MMM dd, YYYY.
But after i run the function, it will return result that I unexpected.
Expected: May 09, 2011
UnExpected : Jan,01,1970.
I suspect the "Mon May 09 09:00:00 GMT 2011" is not a supported by HttpDateParser date format. Since the HttpDateParser.parse() does not throw an exception, I guess it simply return 0 in case of an unsupported format.
Related
I need to parse javascript dates in swift. Since dates are already stored in some database I cannot change the format of them. I just need to parse them into correct Dates in swift.
Below are examples results of javascript's toString() function. It depends on Locale/Language
// js
new Date().toString()
'Tue Jun 01 2021 14:11:27 GMT+0900 (JST)'
'Tue Jun 01 2021 14:03:45 GMT+0900 (Japan Standard Time)'
'Mon May 31 2021 17:38:31 GMT+0800 (中国標準時)'
'Mon May 31 2021 19:25:37 GMT+0930 (オーストラリア中部標準時)'
How can I parse this in Swift DateFormatter?
I have tried this:
// swift
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "EEE MMM dd yyyy HH:mm:ss 'GMT'Z (zzz)"
Date-> String conversion looks correct but String -> Date does not work
// swift
dateFormatter.string(from: Date())
> "Tue Jun 01 2021 14:11:27 GMT+0900 (JST)"
dateFormatter.date(from: "Tue Jun 01 2021 14:11:27 GMT+0900 (JST)")
> nil
Any help is highly appreciated.
As mentioned in the comments by #Sweeper - The timezone name part is implementation dependent - which can be confirmed from the docs
Optionally, a timezone name consisting of:
space
Left bracket, i.e. "("
An implementation dependent string representation of the timezone, which might be an abbreviation or full name (there is no standard for names or abbreviations of timezones), e.g. "Line Islands Time" or "LINT"
Right bracket, i.e. ")"
So we need to - remove the part within parentheses at the end and parse the rest - as mentioned by #Joakim Danielson
Taking this into account, we can do it like this -
extension String {
static private var jsDateFormatter: DateFormatter = {
let formatter = DateFormatter()
formatter.dateFormat = "EEE MMM dd yyyy HH:mm:ss 'GMT'Z"
return formatter
}()
func parsedDate() -> Date? {
let input = self.replacingOccurrences(of: #"\(.*\)$"#, with: "", options: .regularExpression)
return String.jsDateFormatter.date(from: input)
}
}
Tests
func testJSDateParsing() {
[
"Tue Jun 01 2021 14:11:27 GMT+0900 (JST)",
"Tue Jun 01 2021 14:03:45 GMT+0900 (Japan Standard Time)",
"Mon May 31 2021 17:38:31 GMT+0800 (中国標準時)",
"Mon May 31 2021 19:25:37 GMT+0930 (オーストラリア中部標準時)",
].forEach({
if let date = $0.parsedDate() {
print("Parsed Date : \(date) for input : \($0)")
}
else {
print("Failed to parse date for : \($0)")
}
})
}
Output
Parsed Date : 2021-06-01 05:11:27 +0000 for input : Tue Jun 01 2021 14:11:27 GMT+0900 (JST)
Parsed Date : 2021-06-01 05:03:45 +0000 for input : Tue Jun 01 2021 14:03:45 GMT+0900 (Japan Standard Time)
Parsed Date : 2021-05-31 09:38:31 +0000 for input : Mon May 31 2021 17:38:31 GMT+0800 (中国標準時)
Parsed Date : 2021-05-31 09:55:37 +0000 for input : Mon May 31 2021 19:25:37 GMT+0930 (オーストラリア中部標準時)
This question already has answers here:
NSDateFormatter doesn't show time zone abbreviation for "Asia/Kolkata" for the "z" or "zzz" specifier, just the GMT offset
(1 answer)
What is the best way to deal with the NSDateFormatter locale "feature"?
(4 answers)
Closed 5 years ago.
I need to convert the following date string in to a Date in Swift 3.
Fri Dec 09 16:18:43 AMST 2016
Here is the code that i have been using, but it's getting cash on this particular date string conversion. (This date was logged on Android using new Date().toString() method.)
static func formatDate(date: String) -> String {
let dateFormatter = DateFormatter()
dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
dateFormatter.dateFormat = "EEE MMM dd HH:mm:ss zzz yyyy"
//Works for "Fri Sep 16 10:55:48 GMT+05:30 2016"
var myDate = dateFormatter.date(from: date)
// My date returns nil on "Fri Dec 09 16:18:43 AMST 2016"
dateFormatter.dateFormat = "dd/MM/yyyy"
return "\(dateFormatter.string(from: myDate!))"
}
There are both type of strings in the database. I tried with various types of Timezone formats (z/zz/zzz/zzzz/zzzzz) but always myDate returns nil.
Any help would be appreciated.
Thanks In Advance.
Apple doc for TimeZone(abbreviation:):
In general, you are discouraged from using abbreviations except for unique instances such as “GMT”. Time Zone abbreviations are not standardized and so a given abbreviation may have multiple meanings.
Does AMST represents "Amazon Summer Time" (UTC-3) or "Armenia Summer Time" (UTC+5)? See: https://www.timeanddate.com/time/zones
That's probably why it can't detect the proper timezone to use.
Solutions I can propose:
If you know which timezone AMST is:
replace AMST by UTC-3 or UTC+5 in the date string
remove AMST from the date string and use dateFormatter.timeZone = TimeZone(secondsFromGMT: -3 or 5 * 3600)
Have your source output a more precise timezone.
Note the following code, where AMST is understood correctly:
let df = DateFormatter()
df.locale = Locale.init(identifier: "pt_BR") // assuming AMST is Amazon Summer Time (UTC -3)
df.dateFormat = "HH:mm:ss z"
print(df.date(from: "16:18:43 AMST")) // Optional(2000-01-01 19:18:43 +0000)
But as soon as you include English day or month names (e.g. Fri or Dec) it will produce nil (because they aren't in Portuguese).
In iOS, I am using a NSDateFormatter with the DateFormat EEE, dd MMM yyyy HH:mm:ss z.
The String Sat, 29 Aug 2015 12:34:36 EDT does not work and gives back nil when given to the function .dateFromString(). The exact same string with GMT (Sat, 29 Aug 2015 12:34:36 GMT) gives me the correct date, though.
What am I missing here?
So the problem was that the locale I was using wasn't a usual one. I live in Germany and use English as my system language, so the Locale was one with the identifier en_DE. Both de_DE and en_US work with the usual Time Zones (Like EDT), but the unusual en_DE doesn't work with all of them. So the fix was to use en_US as the locale.
Hopefully this should work, I'm in New Zealand but set locale to "EDT"
let string = "Sat, 29 Aug 2015 12:34:36 EDT"
let formatter = NSDateFormatter()
formatter.locale = NSLocale(localeIdentifier: "EDT")
formatter.dateFormat = "EEE, dd MMM yyyy hh:mm:ss z"
let localDate = formatter.dateFromString(string)
I'm trying to format a string from internet time to something more readable.
The input I have is something like: Mon, 27 Apr 2015 20:00:00 +0000
And I'd like to format it into just: Mon, 27 Apr
I'm fairly new to Swift so I don't know the best way to do this.
something like:
let unformattedDateString = "Mon, 27 Apr 2015 20:00:00 +0000"
let dateFormatter = NSDateFormatter()
// input format
dateFormatter.dateFormat = "E, dd MMM yyyy HH:mm:ss Z"
// create NSDate from String
let date = dateFormatter.dateFromString(unformattedDateString)!
// output format
dateFormatter.dateFormat = "E, dd MMM"
// create String from NSDate
let formattedDateString = dateFormatter.stringFromDate(date)
I am fairly new to Groovy (but already loving it). I am not new to coding but haven't had much experience so far.
What am I doing?
I am extracting certain information from an excel file to create a XML (SOAP) message from it to forward it to a web-service. Everything works fine so far except the Date conversion.
I am saving the string date to a var
odate = 'Wed Oct 31 00:00:00 CET 2012'
I need to reformat this Date into something like
"10/31/2012 10:09:00" (MM/dd/yyyy HH:mm:ss)
I have tried to parse the date as mentioned in another question but all I get is an exception.
String odate = 'Wed Oct 31 00:00:00 CET 2012'
def parsedodate = new Date().parse('E MMM dd H:m:s z yyyy', odate)
println parsedodate.format('MM/dd/yyyy h:m:s')
Exception thrown
31.10.2012 10:18:25 org.codehaus.groovy.runtime.StackTraceUtils sanitize
WARNUNG: Sanitizing stacktrace:
java.text.ParseException: Unparseable date: "Wed Oct 31 00:00:00 CET 2012"
Now after a little reading and some rounds of trial & error I found out that somehow the parse method seems to only interpret german dates. The following works after manually changing the string date to a german format (which is whre I am located).
String odate = 'Mi Okt 31 00:00:00 2012' //Mi = Wednesday, Okt = October, removed timezone
def parsedodate = new Date().parse('E MMM dd H:m:s yyyy', odate) // removed the z
println parsedodate .format('MM/dd/yyyy h:m:s')
However, I need the parser to accept the english date format.
What do I do (wrong)?
Whole groovy solution for your problem would be:
import java.text.SimpleDateFormat
odate="Wed Oct 31 00:00:00 CET 2012"
englishPattern="E MMM dd H:m:s z yyyy"
SimpleDateFormat englishDateFormat = new SimpleDateFormat( englishPattern , Locale.ENGLISH);
//SimpleDateFormat germanDateFormat = new SimpleDateFormat( germanPattern , Locale.GERMAN);
Date englishDate = englishDateFormat.parse( odate );
//Date germanDate = germanDateFormat.parse( odate );
String englishOutput = englishDate .format( englishPattern );
//String germanOutput = germanDate .format( germanPattern );
englishDate.format("MM/dd/yyyy hh:mm:ss")
You will need to use some Java to access Locale aware SimpleDateFormat instance.
SimpleDateFormat englishDateFormat = new SimpleDateFormat( englishPattern , Locale.ENGLISH);
SimpleDateFormat germanDateFormat = new SimpleDateFormat( germanPattern , Locale.GERMAN);
Date englishDate = englishDateFormat.parse( odate );
Date germanDate = germanDateFormat.parse( odate );
String englishOutput = englishDate .format( englishPattern );
String germanOutput = germanDate .format( germanPattern );