NSDate-dateFromString返回nil

Question

I have an NSString that has a date. I'm trying to convert that date to an NSDate . When I do that I get nil fro the NSDate . Here is my code:

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"dd/MM/yyyy"];
NSDate *date = [dateFormatter dateFromString:dateString];

NSLog(@"dateString = %@ date = %@", dateString, date);

Here is the output of the NSLog :

dateString = 2015-06-16 date = (null)

What am I doing wrong, and how can I fix it?

Answer 1

The date format does not match the date string. It needs to be: :@"yyyy-MM-dd"

The order and other characters need to match.
yyyy for a four digit year
MM for a two digit month
dd for a two digit day

See: ICU Formatting Dates and Times

Note: NSLog() uses the NSDate description method which presents date/time referenced to GMT (UTC) and NSDateFormatter defaults to your timezone so the date displayed may be different.