Why is NSDateFormatter returning nil?

Question

To be more precise this is not working for me:

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"YYYY-MM-ddTHH:mm:ssZ"];
NSDate *prevday = [formatter dateFromString:@"2011-04-07T22:00:48Z"];    

prevday is returning NIL.

Answer 1

You need to inserts ticks in the string:

@"YYYY'-'MM'-'dd'T'HH':'mm':'ss'Z'"