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有人能解释为什么NSDateFormatter从不同的日期返回相同的字符串:NSDateFormatter相同字符串不同的日期
NSDateFormatter *f = [NSDateFormatter new];
f.dateFormat = @"MM/dd/yyyy";
NSDate *dateYear0 = [[NSCalendar currentCalendar] dateWithEra:0 year:0 month:3 day:31 hour:0 minute:0 second:0 nanosecond:0];
NSDate *dateYear1 = [[NSCalendar currentCalendar] dateWithEra:0 year:1 month:3 day:31 hour:0 minute:0 second:0 nanosecond:0];
NSString *dateStrYear0 = [f stringFromDate:dateYear0];
NSString *dateStrYear1 = [f stringFromDate:dateYear1];
NSLog(@"dateYear0=%@ \t\t dateStrYear0=%@",dateYear0,dateStrYear0);
NSLog(@"dateYear1=%@ \t\t dateStrYear1=%@",dateYear1,dateStrYear1);
两个dateStr1和dateStr2具有相同的价值观:
的NSLog结果:
dateYear0=0001-03-30 21:57:56 +0000 dateStrYear0=03/31/0001
dateYear1=0000-03-30 21:57:56 +0000 dateStrYear1=03/31/0001
它看起来像0年影响这个不知何故?
感谢
查看DateHelper类,你在这里实现的,必须有一些棘手的变化 – bhanu
DateHelper工作正常。只使用NSDateFormatter的代码会产生相同的结果。 – Pavel
当你传递“[DateHelper dateWithYear:0 month:3 day:31]”时,请NSLog检查它返回的是什么。不要执行“dateStr1” – bhanu