Open Radar

 
12-Sep-2010 03:03 AM Vlad Alexa:
Summary:

"24-hour time" setting applies to NSDateFormatter

Steps to Reproduce:


NSString *theTime;  
  NSDateFormatter *formatter;

  formatter = [[NSDateFormatter alloc] init];
  [formatter setDateFormat:@"hh:mm aa"];  
  theTime = [formatter stringFromDate:[NSDate date]];
  NSLog(@"%@",theTime);  
  [formatter release];

  formatter = [[NSDateFormatter alloc] init];
  [formatter setDateFormat:@"hh:mm aa"];  
  [formatter setAMSymbol:@"AM"];
  [formatter setPMSymbol:@"PM"];  
  theTime = [formatter stringFromDate:[NSDate date]];
  NSLog(@"%@",theTime);  
  [formatter release];    

//iOS 4+ only
  //theTime = [NSDateFormatter localizedStringFromDate:[NSDate date] dateStyle:NSDateFormatterNoStyle timeStyle:NSDateFormatterShortStyle];  
  //NSLog(@"%@",theTime);  

  time_t currentTime = time(NULL);
  struct tm timeStruct;
  localtime_r(¤tTime, &timeStruct);
  char buffer[20];
  strftime(buffer, 20, "%I:%m %p", &timeStruct);
  NSString *cTime = [NSString stringWithCString:buffer encoding:NSASCIIStringEncoding];
  NSLog(@"%@",cTime);


Expected Results:

AM from NSDateFormatter too not only strftime

Actual Results:

iOS 3.2

"24-hour time" setting ON
2010-09-12 02:31:18.005 FooBar[13855:207] 02:31
2010-09-12 02:31:18.011 FooBar[13855:207] 02:31
2010-09-12 02:31:18.013 FooBar[13855:207] 02:09 AM 

"24-hour time" setting OFF
2010-09-12 02:30:38.861 FooBar[13848:207] 02:30 AM
2010-09-12 02:30:38.866 FooBar[13848:207] 02:30 AM
2010-09-12 02:30:38.871 FooBar[13848:207] 02:09 AM


iOS 4.1

"24-hour time" setting ON
2010-09-12 02:28:00.981 FooBar[1453:307] 02:28
2010-09-12 02:28:01.049 FooBar[1453:307] 02:28
2010-09-12 02:28:01.098 FooBar[1453:307] 2:28
2010-09-12 02:28:01.112 FooBar[1453:307] 02:09 AM

"24-hour time" setting OFF
2010-09-12 02:29:11.590 FooBar[1460:307] 02:29 AM
2010-09-12 02:29:11.610 FooBar[1460:307] 02:29 AM
2010-09-12 02:29:11.662 FooBar[1460:307] 2:29 AM
2010-09-12 02:29:11.674 FooBar[1460:307] 02:09 AM


OSX emulator
2010-09-12 02:27:03.983 FooBar[17181:207] 02:27 AM
2010-09-12 02:27:03.985 FooBar[17181:207] 02:27 AM
2010-09-12 02:27:03.987 FooBar[17181:207] 2:27 AM
2010-09-12 02:27:03.996 FooBar[17181:207] 02:09 AM

Regression:

NO

Notes:

http://multinc.com/2009/09/27/iphone-sdk-time-bug-for-international-users/

14-Sep-2010 02:05 AM Vlad Alexa:
here you go 

28-Apr-2012 04:17 PM Vlad Alexa:
If it worked correctly why was it fixed/changed in iOS 4.0 ?
I can see it working properly since iOS 4.0 e.g.: the code above now returns 

with "24-hour time" setting ON
2012-04-28 16:10:43.326 FooBar[13177:707] 04:10 PM
2012-04-28 16:10:43.331 FooBar[13177:707] 04:10 PM
2012-04-28 16:10:43.335 FooBar[13177:707] 04:04 PM

with "24-hour time" setting OFF
2012-04-28 16:16:09.321 FooBar[13201:707] 04:16 PM
2012-04-28 16:16:09.325 FooBar[13201:707] 04:16 PM
2012-04-28 16:16:09.327 FooBar[13201:707] 04:04 PM

28-Apr-2012 06:15 PM Vlad Alexa:
However this seems to be restricted to the RELEASE_ARM_S5L8940X kernel of iOS 5.1, another machine with RELEASE_ARM_S5L8930X shows the old behavior