I can get current date of iphone via this code as
NSDate *currentDate = [NSDate date];
NSDateFormatter *dateFormatter1 = [[NSDateFormatter alloc] init];
[dateFormatter1 setDateFormat:#"yyyy-MM-dd HH:mm"];
NSString *dateString = [dateFormatter1 stringFromDate:currentDate];
Now I just want to increase one mint then save NSString format,
how can I?
You can use dateByAddingTimeInterval.
NSDate *currentDate = [NSDate date];
NSDate *datePlusOneMinute = [currentDate dateByAddingTimeInterval:60];
//60 seconds
Or even shorter:
Objective-C
//60 seconds
[NSDate dateWithTimeIntervalSinceNow:60];
Swift
//60 seconds
NSDate(timeIntervalSinceNow: 60)
Related
I have string "2013-12-23T12:02:01+05:30"
i want to convert into date but i am getting NSDate nil
here is my code
// Convert string to date object
NSString *dateStr = #"2013-12-23T12:02:01+05:30";
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy, MM DD 'T' HH:mm:ss Z"];
NSDate *date = [dateFormat dateFromString:dateStr];
Your string format does not match you date string:
NSString *dateStr = #"2013-12-23T12:02:01+05:30";
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZ"];
NSDate *date = [dateFormat dateFromString:dateStr];
In you example date sting there are - used in the date, in the format you are using uses . Also DD will give you the day in the year not in the month. and there is no space after the seconds and time zone offset.
You need to set the correct date format to match with the date string
NSString *dateStr = #"2013-12-23T12:02:01+05:30";
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZ"];
NSDate *date = [dateFormat dateFromString:dateStr];
I have a string which represents a date stored in military time. I want to display this string in a label in 12 hr time. Here is my code snippet:
NSTimeZone *timeZone = [NSTimeZone localTimeZone];
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setTimeZone:timeZone];
[dateFormat setDateFormat:#"MM/dd/yyyy hh:mm:ss"];
NSLog(#"Current Date: %#", [dateFormat stringFromDate:[NSDate date]]);
NSLog(#"Sent date: %#",[myPlanData valueForKey:#"planDate"]);
NSDate *aDate =[dateFormat dateFromString:[myPlanData valueForKey:#"planDate"]];
NSLog(#"Converted date is: %#",aDate);
NSString *planDateString = [dateFormat stringFromDate:aDate];
NSLog(#"The converted date string is: %#",planDateString);
planDateLabel.text=planDateString;
The output is:
Current Date: 06/28/2012 10:08:48 - (so my date formatter appears correct?)
Sent date: 06/30/2012 20:47:34 - (this is the value being sent)
Converted date is: (null) - (Here is where it breaks!)
The converted date string is: (null)
If i change my dateformat to
[dateFormat setDateFormat:#"MM/dd/yyyy HH:mm:ss"];
Everything goes smooth but I end up with Military time being displayed. I simply want to convet that to 12 hr time and display in a label
Well here is how i ended up fixing it
NSTimeZone *timeZone = [NSTimeZone localTimeZone];
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setTimeZone:timeZone];
[dateFormat setDateFormat:#"MM/dd/yyyy HH:mm:ss"];
NSDateFormatter *dateFormatback = [[NSDateFormatter alloc] init];
[dateFormatback setTimeZone:timeZone];
[dateFormatback setDateFormat:#"MM/dd/yyyy hh:mm:ss a"];
NSLog(#"Current Date: %#", [dateFormat stringFromDate:[NSDate date]]);
NSLog(#"Sent date: %#",[myPlanData valueForKey:#"planDate"]);
NSDate *aDate =[dateFormat dateFromString:[myPlanData valueForKey:#"planDate"]];
NSLog(#"Converted date is: %#",aDate);
NSString *planDateString = [dateFormatback stringFromDate:aDate];
NSLog(#"The converted date string is: %#",planDateString);
planDateLabel.text=planDateString;
Not sure if this is the best or right way to do it but it works!
I'm trying to produce a string using a NSDate category in this way:
NSString* dateString = nil;
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setLocale:[NSLocal currentLocale]];
[dateFormat setDateFormat:#"dd LLL YYYY"];
dateString = [dateFormat stringFromDate:self];
return dateString;
The conversion works fine except in ONE case (I report the debug session):
if I try to convert an NSDate object like this:
(gdb) po self
2012-01-01 00:00:00 +0000
I obtain:
(gdb) po dateString
01 Jan 2011
Why the year is set back to 2011????
PS. I have already checked NSDate returns wrong year and I'm NOT using the Japanese calendar.
thanks a lot
Try this:
NSDate *pickerDate = [NSDate date];
NSCalendar* calendar = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
NSDateComponents* components = [[[NSDateComponents alloc] init] autorelease];
components.day = 0; //This value to take from today to next 1 or 2 or 3 days
NSDate* newDate = [calendar dateByAddingComponents: components toDate: pickerDate options: 0];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"dd-MMMM"];
NSString *textDate = [NSString stringWithFormat:#"%#",[dateFormatter stringFromDate:newDate]];
[dateFormatter release];
This extremely simple task was apparantly very hard...
NSDate *date;
date = [someMethod here];
//I've checked with debugger that the method returns an object of type NSDate.
//The description of date at this point is: "2012-02-02 19:42:00 +0000"
NSDateFormatter *dateFormat;
[dateFormat setDateFormat:#"dd-MM-yy hh:mm"];
NSString *dateString = [dateFormat stringFromDate:date];
dateString is just NIL
Does anyone know what's wrong?
Edit: What i really want to achieve is simply:
NSString *receivedDate = #"2012-02-02T20:42:00+01:00";
NSString *fixedDate = [do some magic]
//value of fixedDate is now: "02-02-12 20:42"
As Anna said you need to allocate an instance of NSDateFormatter because all you get is a NULL ptr, which just ignores the messages setDateFormat and stringFromDate, leaving you with NULL.
But also your format is for hours is incorrect. Refer to Date Formatter reference
This works for me:
NSDateFormatter *df = [[[NSDateFormatter alloc] init] autorelease];
[df setDateFormat:##"dd-MM-yy HH:mm"];
NSString *dateString = [df stringFromDate:date];
I have tried setting the timezone and locale of the NSDateFormatter but I can't seem to get anything to work. Here is the code
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"MM/dd/yyyy hh:mm:ss"];
NSString *myFireDateString=[#"9/17/11" stringByAppendingString:#" 09:00:00"];
NSDate *myFireDate = [dateFormat dateFromString:myFireDateString];
NSLog(#"The datestring is is %#",myFireDateString);
NSLog(#"The formatted date is %#",myFireDate);
Here is the output:
The datestring is is 9/17/11 09:00:00
The formatted date is 2011-09-17 13:00:00
You need to set a timezone to your dateFormatter:
[dateFormatter setTimeZone:[NSTimeZone defaultTimeZone];
See NSDate from NSString , shows the previous day