CODEWITHSUNDEEP
iphoneiosnsdateformatterdatetime-format
Noor
Noor

Reputation: 2067

Converting NSString to NSDate

I am converting two strings of date and time to NSDate but i always get wrong time, but getting correct date, I don't know why xcode is giving wrong log message,I have seem many NSDate code but all are not working, this one is working when I changed date format, tell me what to do for time format 

     NSDate * date;
    //Assume dateString is populated and of format NSString * dateString =@"2011-11-21 11:20";
    NSDateFormatter * dateFormatter = [[NSDateFormatter alloc] init];
    NSString *dateString =[NSString stringWithFormat:@"%@ %@", socialEvent.SocialEventsDC_EventDate,socialEvent.SocialEventsDC_EventStartTime];
    NSLog(@"%@ %@",socialEvent.SocialEventsDC_EventDate,socialEvent.SocialEventsDC_EventStartTime);

    [dateFormatter setDateFormat:@"MM/dd/yyyy HH:mm a"];
    if (dateString != nil)  {
        date = [dateFormatter dateFromString:dateString];
//        [date release];
    }

    NSLog(@"%@",date);

my log message is 

2013-04-25 10:45:04.417 BNI UK & Ire[450:5203] 01/20/2015 11:00 PM
2013-04-25 10:45:09.679 BNI UK & Ire[450:5203] 2015-01-20 07:00:00 +0000

my time is always 7:00:00 although my time is 11:00, please help me

Upvotes: 0

Views: 286

Answers (4)

JAK
JAK

Reputation: 6491

Please try this code...

    NSDateFormatter *dateFormatter1 = [[NSDateFormatter alloc] init];

    [dateFormatter1 setDateFormat:@"MM/dd/yyyy hh:mm a"];
    [dateFormatter1 setTimeZone:[NSTimeZone timeZoneWithName:@"GMT"]];
    NSDate *myDate = [dateFormatter1 dateFromString:@"01/20/2015 11:00 pm"];
    NSLog(@"mydate is :%@",myDate);
    NSLog(@"DATE IS : %@",[dateFormatter1 stringFromDate:myDate]);

Note:timeZone depend upon your local timeZone.

Upvotes: 1

Paras Joshi
Paras Joshi

Reputation: 20551

try this code...

    NSString * dateString =@"2011-11-21 11:20";
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@"yyyy-MM-dd hh:mm"];
    // [formatter setTimeZone:[NSTimeZone localTimeZone]];

    NSDate *datTemp = [formatter dateFromString:dateString];
    NSTimeZone* sourceTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
    NSTimeZone* destinationTimeZone = [NSTimeZone systemTimeZone];

    NSInteger sourceGMTOffset = [sourceTimeZone secondsFromGMTForDate:datTemp];
    NSInteger destinationGMTOffset = [destinationTimeZone secondsFromGMTForDate:datTemp];
    NSTimeInterval interval = destinationGMTOffset - sourceGMTOffset;
    NSDate* destinationDate = [[[NSDate alloc] initWithTimeInterval:interval sinceDate:datTemp] autorelease];
    NSLog(@"\n\n\n Destination date is:- %@",destinationDate);

Upvotes: 1

Anupdas
Anupdas

Reputation: 10201

If the dateString is as given below this should work, timezone is assumed be your local timeZone. And log of date will be in UTC

NSString *dateString = @"2011-11-21 11:20";

NSDateFormatter * dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm"];

NSDate * date = [dateFormatter dateFromString:dateString];
NSLog(@"%@",date);

Upvotes: 1

Balu
Balu

Reputation: 8460

try like this ,

NSDate *mydate = [NSDate date];
NSTimeInterval secondsInEightHours = 4 * 60 * 60;
NSDate *dateEightHoursAhead = [mydate dateByAddingTimeInterval:secondsInEightHours];

Upvotes: 1

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