I want to be able to get the local date and time for wherever my app is run, based on the iPhone configuration. Specifically I need the date to be of format mm/dd or dd/mm (or dd.mm, mm.dd, dd-mm, mm-dd, etc) depending on the locale, and time is hh:mm. Is this possible with some combination of SDK methods?
Thanks!
I have modified the code so that it just takes the date and time out of the NSDate object with no changes:
NSDate* date = [NSDate date];
NSString* datePart = [NSDateFormatter localizedStringFromDate: date
dateStyle: NSDateFormatterShortStyle
timeStyle: NSDateFormatterNoStyle];
NSString* timePart = [NSDateFormatter localizedStringFromDate: date
dateStyle: NSDateFormatterNoStyle
timeStyle: NSDateFormatterShortStyle];
NSLog(#"Month Day: %#", datePart);
NSLog(#"Hours Min: %#", timePart);
Well, I believe the following code works for what I need:
NSString *dateComponents = #"yMMd";
NSString *dateFormat = [NSDateFormatter dateFormatFromTemplate:dateComponents options:0 locale:[NSLocale currentLocale]];
NSArray *tmpSubstrings = [dateFormat componentsSeparatedByString:#"y"];
NSString *tmpStr;
NSRange r;
if ([[tmpSubstrings objectAtIndex:0] length] == 0) {
r.location = 1;
r.length = [[tmpSubstrings objectAtIndex:1] length] - 1;
tmpStr = [[tmpSubstrings objectAtIndex:1] substringWithRange:r];
} else {
r.location = 0;
r.length = [[tmpSubstrings objectAtIndex:0] length] - 1;
tmpStr = [[tmpSubstrings objectAtIndex:0] substringWithRange:r];
}
NSString *newStr = [[NSString alloc] initWithFormat:#"%# H:mm", tmpStr];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:newStr];
NSString *formattedDateString = [formatter stringFromDate:[NSDate date]];
Related
I can't parse this date string: #"2002 0 20", where 0 is January (First month in year is 0, not 1).
Can I use NSDateFormatter to parse this string?
Here http://www.unicode.org/reports/tr35/tr35-31/tr35-dates.html#Parsing_Dates_Times I've read that month should starts on 1.
UPDATE
I need this formatter because I have much data in this format (it is not my data).
I've not found any solution with NSDateFormatter without creating a subclass and overriding format methods.
I don't use NSScan, because it is a too complicated solution, but I think #Andy is right.
I use this code to parse the string:
- (BOOL)getObjectValue:(out __autoreleasing id *)obj forString:(NSString *)string range:
(inout NSRange *)rangep error:(out NSError *__autoreleasing *)error
{
int year = 0;
int month = -1;
int day = -1;
int coutRead = sscanf([string cStringUsingEncoding:NSUTF8StringEncoding], "Date.UTC(%i, %i, %i)", &year, &month, &day);
BOOL result = NO;
if (coutRead == 3)
{
NSDateComponents* components = [[NSDateComponents alloc] init];
components.year = year;
components.month = month + 1;
components.day = day;
*obj = [self.calendar dateFromComponents:components];
result = YES;
}
else
{
obj = 0;
*rangep = NSMakeRange(NSNotFound, 0);
result = NO;
}
return result;
}
Try this:
NSDateFormatter* formatter = [NSDateFormatter new];
formatter.timeZone = [NSTimeZone timeZoneWithName:#"UTC"];
formatter.shortMonthSymbols = #[#"0", #"1", #"2", #"3", #"4", #"5", #"6", #"7", #"8", #"9", #"10", #"11"];
formatter.dateFormat = #"yyyy MMM dd"; // Note 3 Ms for "short month" format
NSDate* theDate = [formatter dateFromString:#"2002 0 20"];
Result:
2002-01-20 00:00:00 +0000
No you can't. Parse manually.
At your disposal:
You have NSString that can split string on substrings array using custom delimiter, white space in your case. For example:
-(NSArray*)componentsSeparatedByString:(NSString *)separator
NSScanner that you can use to read integers directly from string.
Documentation is straightforward and comprehensive.
I have an array of dates in this format:
date: 2012-01-02,2012-03-17,2012-04-09,2012-05-07,2012-06-04,2012-08-06,2012-10-29,2012-12-25,2012-12-26.
I want to compare the dates with today's date, but I need some help. This is my code.
NSArray *date =[dict12 objectForKey:#"ie_date_closed"];
NSLog(#"date:%#",date);
int i=date;
for (i=0; i<6; i++)
{
NSComparisonResult result = [todaydate compare:date[i]];
NSLog(#"result:%d",result);
}
Try below code:-
NSDateFormatter *formatter=[[NSDateFormatter alloc]init];
[formatter setDateFormat:#"yyyy-MM-dd"];
for (NSString *arrDt in date){
if ([arrDt isEqualToString:[formatter stringFromDate:[NSDate date]]]){
NSLog(#"Equal Date");}}
Note:- You need to set the dateFormat according to array object dates.
Here is the code have a look at & try to implement your self using it :
for (i=0; i<[date count]; i++)
{
NSDateformatter *format = Define Your date Format Here
NSDate yourDate = [format dateFromString:[date objectAtIndex:i]];
If ([YourDate compare:[NSDate date]] == NSOrderedSame)
{
NSLog(#"Both Dates are same");
}
}
Note : I am not giving you whole readymade code but just for a hint so using it you can be able to implement what you want.
Hope this will help.
try it
NSDate *firstTime;
NSDate *nowTime;
NSDate *localDate = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setTimeZone:[NSTimeZone systemTimeZone]];
dateFormatter.dateFormat = #"YYYY-MM-dd";
NSString *str = [dateFormatter stringFromDate:localDate];
NSArray *date =[dict12 objectForKey:#"ie_date_closed"];
NSLog(#"date:%#",date);
for (i=0; i<[date count]; i++)
{
NSString *openTime =[NSString stringWithFormate:"%#"[date objectAtindex:i]];
NSDateFormatter *dateComperFormatter1 = [[NSDateFormatter alloc] init];
[dateComperFormatter1 setTimeZone:[NSTimeZone systemTimeZone]];
[dateComperFormatter1 setDateFormat:#"YYYY-MM-dd"];
firstTime = [dateComperFormatter1 dateFromString:openTime];
nowTime = [dateComperFormatter1 dateFromString:str];
// NSComparisonResult result;
// // has three possible values: NSOrderedSame,NSOrderedDescending, NSOrderedAscending
//
// result = [nowTime compare:firstTime]; // comparing two dates
NSComparisonResult result = [nowTime compare:firstTime];
}
I'm trying to convert this string #"August 8, 2013" to a NSDate but I keep getting NULL as my result:
strToConvert = #"August 8, 2013";
dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"MM/dd/YYYY zzz"];
NSDate* myDate = [dateFormatter dateFromString:strToConvert];
Am I formatting it incorrectly?
Edit:
I changed the method to this:
- (NSDate*) convertStringToDate : (NSString*) strToConvert {
NSError* error = nil;
NSDataDetector* detector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingTypeDate error:&error];
NSArray* arrDateMatches = [detector matchesInString:strToConvert options:0 range:NSMakeRange(0, [strToConvert length])];
for (NSTextCheckingResult* match in arrDateMatches) {
strToConvert = [self convertDateToString:match.date];
}
NSDate* myDate = [dateFormatter dateFromString:strToConvert];
return myDate;
}
and it works fine. The only issue is I am getting a implicit conversion from enumeration type 'enum NSTextCheckingType'... any idea of how to fix that warning?
The NSDateFormatter has the incorrect format. You need to match the format of the expected input:
[dateFormatter setDateFormat:#"MMMM d, yyyy"];
I want to parse a date string that I receive from a web service. However, I sometimes receive the date with decimal component and sometimes without decimal component. Also, sometimes the date comes with a different number of decimal digits.
Assume you got the following date:
NSString *dateString = #"2013-07-22T220713.9911317-0400";
How can remove the decimal values? I want to end up with:
#"2013-07-22T220713-0400";
So I can process it with the DateFormatter that uses no decimal.
You could use a regular expression to match the first occurrence of a decimal followed by numbers, and remove them:
NSString *dateString = #"2013-07-22T220713.9911317-0400";
NSRegularExpression * regExp = [NSRegularExpression regularExpressionWithPattern:#"\\.[0-9]*" options:kNilOptions error:nil];
dateString = [dateString stringByReplacingCharactersInRange:[regExp rangeOfFirstMatchInString:dateString options:kNilOptions range:(NSRange){0, dateString.length}] withString:#""];
Based on #JeffCompton 's suggestion I ended up doing this:
+ (NSDate *)dateFromISO8601:(NSString *)dateString {
if (!dateString) return nil;
if ([dateString hasSuffix:#"Z"]) {
dateString = [[dateString substringToIndex:(dateString.length - 1)] stringByAppendingString:#"-0000"];
}
NSString *cleanDateString = dateString;
NSArray *dateComponents = [dateString componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:#"."]];
if ([dateComponents count] > 1){
NSArray *timezoneComponents = [[dateComponents objectAtIndex:1] componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:#"-"]];
if ([timezoneComponents count] > 1){
cleanDateString = [NSString stringWithFormat:#"%#-%#", [dateComponents objectAtIndex:0], [timezoneComponents objectAtIndex:1]];
}
}
dateString = [cleanDateString stringByReplacingOccurrencesOfString:#":" withString:#""];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = #"yyyy-MM-d'T'HHmmssZZZ";
NSDate *resultDate = [dateFormatter dateFromString:dateString];
return resultDate;
}
This is a modification of some open-source code but I lost the reference to the original code.
The reason for all the modifications is that I am connecting to API's that can give me the date with decimals or without, and sometimes without the : separating HH, mm, and ss.
HI,
I need to display date as "15th November 2010" in iPhone SDK.
How do I do that?
Thanks!
You can use a Date Formatter as explained in this post:
// Given some NSDate* date
NSDateFormatter* formatter = [[[NSDateFormatter alloc] init] autorelease];
[formatter setDateFormat:#"dd MMM yyyy"];
NSString* formattedDate = [formatter stringFromDate:date];
I believe you can simply just put "th" at the end of the dd in the format string. like this:
#"ddth MMM yyy
but I don't have my Mac in front of me to test it out. If that doesn't work you can try something like this:
[formatter setDateFormat:#"dd"];
NSString* day = [formatter stringFromDate:date];
[formatter setDateFormat:#"MMM yyyy"];
NSString* monthAndYear = [formatter stringFromDate:date];
NSString* date = [NSString stringWithFormat:#"%#th %#", day, monthAndYear];
I know I'm answering something old; but I did the following.
#implementation myClass
+ (NSString *) dayOfTheMonthToday
{
NSDateFormatter *DayFormatter=[[NSDateFormatter alloc] init];
[DayFormatter setDateFormat:#"dd"];
NSString *dayString = [DayFormatter stringFromDate:[NSDate date]];
//yes, I know I could combined these two lines - I just don't like all that nesting
NSString *dayStringwithsuffix = [myClass buildRankString:[NSNumber numberWithInt:[dayString integerValue]]];
NSLog (#"Today is the %# day of the month", dayStringwithsuffix);
}
+ (NSString *)buildRankString:(NSNumber *)rank
{
NSString *suffix = nil;
int rankInt = [rank intValue];
int ones = rankInt % 10;
int tens = floor(rankInt / 10);
tens = tens % 10;
if (tens == 1) {
suffix = #"th";
} else {
switch (ones) {
case 1 : suffix = #"st"; break;
case 2 : suffix = #"nd"; break;
case 3 : suffix = #"rd"; break;
default : suffix = #"th";
}
}
NSString *rankString = [NSString stringWithFormat:#"%#%#", rank, suffix];
return rankString;
}
#end
I grabbed the previous class method from this answer: NSNumberFormatter and 'th' 'st' 'nd' 'rd' (ordinal) number endings