Question

I have some code that works perfectly fine in iOS 5, but breaks in iOS 6.

It is the TimeIntervalSinceDate method…

I’ve found others with this problem, but no solutions:

Here is my code:

  NSString *origDate = @"2012-11-29 19:43:30";

   NSDateFormatter *df = [[NSDateFormatter alloc] init];
    [df setFormatterBehavior:NSDateFormatterBehavior10_4];
    [df setDateFormat:@"YYYY-MM-dd HH:mm:ss"];
    NSDate *convertedDate = [df dateFromString:origDate];
    [df release];


    NSDate* sourceDate = [NSDate date];

    NSLog(@"sourceDate: %@", sourceDate);
    NSLog(@"convertedDate: %@", convertedDate);

    NSTimeInterval ti = [ sourceDate timeIntervalSinceDate:convertedDate];

    NSLog(@"interval double: %f", ti);

In iOS 5, I get this as a value:

interval double: 711.113610

in iOS 6 I get:

interval double: 31623151.242078

Any suggestions?

Thank you

Answer 1

See what Apple say about Date Formatters:

A common mistake is to use
YYYY. yyyy specifies the calendar year whereas YYYY specifies the year
(of “Week of Year”), used in the ISO year-week calendar. In most
cases, yyyy and YYYY yield the same number, however they may be
different. Typically you should use the calendar year.