Open Radar

 
20-Oct-2011 09:05 PM Mathijs Kadijk:
Summary:
The iOS 5 SDK is returning the wrong weeknumber. The weeknumber is compared to iOS 4 always 1 higher. 

Steps to Reproduce:
1. Run the following code, build against the iOS 5 SDK
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *dateComponents = [calendar components:NSWeekOfYearCalendarUnit fromDate:[NSDate date]];
NSLog(@"%@", [dateComponents description]); // As of Oct 20, 2011 this prints: 43

Expected Results:
Result should be 42. (Similar iOS 4 code will return 42)

Actual Results:
Result is 43.

Regression:
This problem occurs always when the application is build against the iOS 5 SDK and when you run it on a device with iOS 5.

Notes:
There is a workaround; This code will return the correct weeknumber:
dateComponents = [[NSCalendar currentCalendar] components:NSWeekOfYearCalendarUnit fromDate:[NSDate date]];
NSLog(@"%@", [dateComponents description]); // Result: 42

See also: https://devforums.apple.com/message/562827