I have a webservice that returns the date in this format:
2013-04-14
How do i figure out what day this corresponds to?
This code will take your string, convert it to an NSDate object and extract both the number of the day (14) and the name of the day (Sunday)
NSString *myDateString = #"2013-04-14";
// Convert the string to NSDate
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = #"yyyy-MM-dd";
NSDate *date = [dateFormatter dateFromString:myDateString];
// Extract the day number (14)
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSDayCalendarUnit fromDate:date];
NSInteger day = [components day];
// Extract the day name (Sunday)
dateFormatter.dateFormat = #"EEEE";
NSString *dayName = [dateFormatter stringFromDate:date];
// Print
NSLog(#"Day: %d: Name: %#", day, dayName);
Note: This code is for ARC. If MRC, add [dateFormatter release] at the end.
An alternate method for getting the weekday can be:
NSString *myDateString = #"2013-04-14";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd"];
NSDate *date = [dateFormatter dateFromString:myDateString];
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSWeekdayCalendarUnit fromDate:date];
NSInteger weekday = [components weekday];
NSString *weekdayName = [dateFormatter weekdaySymbols][weekday - 1];
NSLog(#"%# is a %#", myDateString, weekdayName);
You can use this code it working for me.
NSString *dateString = #"2013-04-14";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd"];
NSDate *dateFromString = [[NSDate alloc] init];
dateFromString = [dateFormatter dateFromString:dateString];
[dateFormatter setDateFormat:#"EEEE"];
NSLog(#"%#", [dateFormatter stringFromDate:dateFromString]);
If you have 2013-04-14 stored in a NSString called date, then you can do this...
NSArray *dateComponents = [date componentsSeperatedByString:#"-"];
NSString *day = [dateComponents lastObject];
Swift 3:
let datFromat = DateFormatter()
datFormat.dateFormat = "EEEE"
let name = datFormat.string(from: Date())
Bonus: If you want to set your own date template instead of using Date() above:
let datFormat = DateFormatter()
datFormat.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZZZZZ"
let thisDate = datFormat.date(from: "2016-10-13T18:00:00-0400")
Then call the 1st code after this.
Related
time is string format like 10:27:43. but when i convert in to date format. it is going to change Sat Jan 1 10:27:43 2000.but i need only time like 10:27:43
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"EEE MMM dd HH:mm:ss ZZZ yyyy"];
NSLog(#"Date is %#", dateTime);
// Convert to new Date Format
[dateFormatter setDateFormat:#"HH:mm:ss"];
newDate = [dateFormatter stringFromDate:dateTime];
NSLog(#" string Date is %#", newDate);
NSDateFormatter *dateFormatter1 = [[NSDateFormatter alloc] init] ;
[dateFormatter1 setDateFormat:#"HH:mm:ss"];
//[dateFormatter1 setDateFormat:#"dd/mm/yyyy"];
NSDate *dateFromString = [dateFormatter1 dateFromString:newDate];
NSLog(#"date format date %#",dateFromString);
you need to convert dateFormat as per date is coming and after convert it as you want.
Try this below code..
NSString *dateTime = #"Thu Jan 25 10:38:11 2018";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"EEE MMM dd HH:mm:ss yyyy"];
NSDate *dateFromString = [dateFormatter dateFromString:dateTime];
NSLog(#"Date is %#", dateTime);
// Convert to new Date Format
[dateFormatter setDateFormat:#"HH:mm:ss"];
NSString *result = [dateFormatter stringFromDate:dateFromString];
NSLog(#"result %#",result);
Split the time in date components and use that components as a time.
Check below code.
NSString *aStrTime = #"10:27:43";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"HH:mm:ss"];
NSDate *date = [dateFormatter dateFromString:aStrTime];
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [calendar components:(NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond) fromDate:date];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSInteger sec = [components second];
NSLog(#"%d:%d:%d", hour, minute, sec);
Note: change aStrTime and dateFormatPattern according to your need.
You can try the following code:-
For e.g:- if you are getting the date in 10-02-2017 12:30:50 format
NSString *strDate = #"10-02-2017 12:30:50";
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"dd-mm-yyyy HH:mm:ss"];
NSDate *date = [dateFormatter dateFromString:strDate];
NSLog(#"The Date is: %#", date);
// By this code you will get the date in NSDate form. Now you can change the format to get the time
[dateFormat setDateFormat:#"HH:mm:ss"];
NSString *strFinalTime = [dateFormatter stringFromDate:strDate];
NSLog(#"strFinalTime: %#",strFinalTime);
I have string 2015-08-10T12:00 how can I convert it to Date?
My code did not works
[self.dataFormatter setDateFormat:#"yyyy-MM-ddTHH:mm"];
NSDate *date = [self.dataFormatter dateFromString:dateStg];
Use this date format:
yyyy-MM-dd'T'HH:mm
converted current Date into String
//Get Current Date
NSLocale *en_US_POSIX = [[NSLocale alloc] initWithLocaleIdentifier:#"en_US_POSIX"];
assert(en_US_POSIX != nil);
NSDate *currentTime = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setLocale:en_US_POSIX];
[dateFormatter setDateFormat:#"dd-MM-yyyy"];
NSString *resultString = [dateFormatter stringFromDate: currentTime];
Converted Current Time inTo NSString
//Get Current Date
NSDate* now = [NSDate date];
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDateComponents *dateComponents = [gregorian components:(NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond) fromDate:now];
NSInteger hour = [dateComponents hour];
NSString *am_OR_pm=#"AM";
if (hour>12){
hour=hour%12;
am_OR_pm = #"PM";
}
NSInteger minute = [dateComponents minute];
NSString *strTime=[NSString stringWithFormat:#"%02d:%02d %#", hour, minute ,am_OR_pm];
Converted NSString to NSDate
NSString *dateString = #"01-02-2010";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
// this is imporant - we set our input date format to match our input string
// if format doesn't match you'll get nil from your string, so be careful
[dateFormatter setDateFormat:#"dd-MM-yyyy"];
NSDate *dateFromString = [[NSDate alloc] init];
// voila!
dateFromString = [dateFormatter dateFromString:dateString];
I have a webservice that returns the date in this format:
2013-04-14
How do i figure out what day this corresponds to?
This code will take your string, convert it to an NSDate object and extract both the number of the day (14) and the name of the day (Sunday)
NSString *myDateString = #"2013-04-14";
// Convert the string to NSDate
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = #"yyyy-MM-dd";
NSDate *date = [dateFormatter dateFromString:myDateString];
// Extract the day number (14)
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSDayCalendarUnit fromDate:date];
NSInteger day = [components day];
// Extract the day name (Sunday)
dateFormatter.dateFormat = #"EEEE";
NSString *dayName = [dateFormatter stringFromDate:date];
// Print
NSLog(#"Day: %d: Name: %#", day, dayName);
Note: This code is for ARC. If MRC, add [dateFormatter release] at the end.
An alternate method for getting the weekday can be:
NSString *myDateString = #"2013-04-14";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd"];
NSDate *date = [dateFormatter dateFromString:myDateString];
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSWeekdayCalendarUnit fromDate:date];
NSInteger weekday = [components weekday];
NSString *weekdayName = [dateFormatter weekdaySymbols][weekday - 1];
NSLog(#"%# is a %#", myDateString, weekdayName);
You can use this code it working for me.
NSString *dateString = #"2013-04-14";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd"];
NSDate *dateFromString = [[NSDate alloc] init];
dateFromString = [dateFormatter dateFromString:dateString];
[dateFormatter setDateFormat:#"EEEE"];
NSLog(#"%#", [dateFormatter stringFromDate:dateFromString]);
If you have 2013-04-14 stored in a NSString called date, then you can do this...
NSArray *dateComponents = [date componentsSeperatedByString:#"-"];
NSString *day = [dateComponents lastObject];
Swift 3:
let datFromat = DateFormatter()
datFormat.dateFormat = "EEEE"
let name = datFormat.string(from: Date())
Bonus: If you want to set your own date template instead of using Date() above:
let datFormat = DateFormatter()
datFormat.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZZZZZ"
let thisDate = datFormat.date(from: "2016-10-13T18:00:00-0400")
Then call the 1st code after this.
I have my data in JSON format which contains some date:
"NOME_PUBBL_LINEA" = "FOLLONICA - PIOMBINO";
"ORA_ARRIVA" = "1899-12-30T06:45:00";
"ORA_PARTE" = "1899-12-30T05:50:00";
I want to convert it like :
ora_arriva = 6.45,
ora_parte = 5.50
I have tried following :
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"YYYY-MM-dd'T'HH:mm:ss'+02:00'"];
[dateFormat setTimeZone:[NSTimeZone timeZoneWithName:#"Italy/Rome"]];
NSDate *dte = [dateFormat dateFromString:dataDic[#"ORA_ARRIVA"]];
But it is giving me like
1899-12-30 00:51:40 +0000
for ora_arriva.
[dateFormat setDateFormat:#"yyyy-MM-dd'T'HH:mm:ss'+02:00'"];
Just yyyy :)
dateFromString returns an NSDate. You need take that NSDate object and construct your time:
NSDate *myDate = [NSDate date];
NSCalendar *gregorianCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *comp = [gregorianCalendar components:NSHourCalendarUnit|NSMinuteCalendarUnit|NSSecondCalendarUnit fromDate:myDate];
NSLog(#"current time = %ld:%ld", [comp hour], [comp minute]);
Replace the myDate with your actual NSDate you got back from your dateFormatter
You need something like this
[dateformatter setDateFormat:#"MM-dd-yyyy hh:mm:ss"];
NSString *dateString = [dateformatter stringFromDate:adate];
I'm struggling to find a way to use NSDate for time only purposes.
I was trying to do the following code:
- (void)awakeFromInsert
{
NSDateComponents *comps = [[NSDateComponents alloc] init];
comps.minute = 45;
comps.second = 0;
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
self.periodDuration = [calendar dateFromComponents:comps];
NSLog(#"periodDuration: %#",self.periodDuration);
comps = [[NSDateComponents alloc] init];
comps.hour = 8;
comps.minute = 0;
self.firstPeriodStartTime = [calendar dateFromComponents:comps];
NSLog(#"firstPeriodTime: %#",self.periodDuration);
}
But the result I get is:
periodDuration: 0001-12-31 22:24:04 +0000
firstPeriodTime: 0001-12-31 22:24:04 +0000
The result I was expecting:
periodDuration: 45:00
firstPeriodTime: 08:00
What am I doing wrong? How can I fix this?
Thank you.
The log of date is misleading you, if you are forming a date with only a few components you will not get a proper date instance which uniquely identifies a date and time.
If you try with this code snipped you can find that if you are just converting the dates back to string it is just as you expect
NSDateComponents *comps = [[NSDateComponents alloc] init];
comps.minute = 45;
comps.second = 0;
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDate *periodDate = [calendar dateFromComponents:comps];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"mm:ss"];
NSLog(#"periodDuration: %#",[dateFormatter stringFromDate:periodDate]);
comps = [[NSDateComponents alloc] init];
comps.hour = 8;
comps.minute = 0;
NSDate *firstPeriodDate = [calendar dateFromComponents:comps];
[dateFormatter setDateFormat:#"HH:mm"];
NSLog(#"firstPeriodTime: %#",[dateFormatter stringFromDate:firstPeriodDate]);
periodDuration: 45:00
firstPeriodTime: 08:00
You can use NSDateFormatter
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"HH:mm"];
NSLog(#"%#",[dateFormatter stringFromDate:[NSDate date]]);
Use a NSTimeInterval (which is, basically, a double containing the number of seconds). To store it in CoreData:
[NSNumber numberWithDouble:myTimeInterval];
As for formatting: If you want more than 24h displayed, use this:
NSUInteger seconds = (NSUInteger)round(myTimeInterval);
NSString *formattedDate = [NSString stringWithFormat:#"%02u:%02u:%02u",
seconds / 3600, (seconds / 60) % 60, seconds % 60];
NSLog(#"%#", formattedDate);
If you don't want more than 24h, you can use NSDate and NSDateFormatter again:
NSDate *date = [NSDate dateWithTimeIntervalSinceReferenceDate:myTimeInterval];
NSDateFormatter *dateFormatter = [NSDateFormatter new];
[dateFormatter setDateFormat:#"HH:mm:ss"];
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:#"UTC"]];
NSString *formattedDate = [dateFormatter stringFromDate:date];
NSLog(#"%#", formattedDate);
NSString *timeString;
timeString = [NSDateFormatter localizedStringFromDate:[NSDate date]
dateStyle:NSDateFormatterNoStyle
timeStyle:NSDateFormatterMediumStyle];
12:03:54 PM