问题
i have a string like 2013-03-05T07:37:26.853
and i want to get the Output : 2013-03-05 07:37:26
. I want the final output in NSDate
object. i am using below function to convert desire output. and it returning wrong time.
- (NSDate *) getDateFromCustomString:(NSString *) dateStr
{ NSArray *dateStrParts = [dateStr componentsSeparatedByString:@"T"];
NSString *datePart = [dateStrParts objectAtIndex:0];
NSString *timePart = [dateStrParts objectAtIndex:1];
NSArray *dateParts = [datePart componentsSeparatedByString:@"-"];
NSArray *timeParts = [timePart componentsSeparatedByString:@":"];
NSDateComponents *components = [[NSDateComponents alloc] init];
[components setHour:[[timeParts objectAtIndex:0] intValue]];
[components setMinute:[[timeParts objectAtIndex:1] intValue]];
[components setSecond:[[timeParts objectAtIndex:2] intValue]];
[components setYear:[[dateParts objectAtIndex:0] intValue]];
[components setMonth:[[dateParts objectAtIndex:1] intValue]];
[components setDay:[[dateParts objectAtIndex:2] intValue]];
NSCalendar *currentCalendar = [NSCalendar currentCalendar];
NSDate *date = [currentCalendar dateFromComponents:components];
NSLog(@"Date 1:%@",date); // Returns wrong time (2013-03-05 02:07:26)
/* i had tried the below.
NSDateFormatter * format = [[NSDateFormatter alloc] init];
[format setTimeZone:NSTimeZoneNameStyleStandard];
[format setDateFormat:@"yyyy-MM-dd hh:mm:ss"];
NSLog(@"Date 2:%@",[format stringFromDate:date]); // Returns correct date (2013-03-05 07:37:26)
NSDate *fDate = [format dateFromString:[format stringFromDate:date]];
DLog(@"Date 3:%@",fDate); // Returns wrong time (2013-03-05 02:07:26)
*/
[components release];
return date;
}
Plz suggest me if any idea.
回答1:
What you're seeing here is a time zone issue. If you want to NSLog a correct looking date, we'll need to give the input string a GMT time zone:
Add this in your code and see what happens:
[components setTimeZone: [NSTimeZone timeZoneForSecondsFromGMT: 0]];
回答2:
Try this,
NSString *departTimeDate = @"2013-03-05T07:37:26.853";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'SSS"];
NSDate *date = [dateFormatter dateFromString:departTimeDate];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSLog(@"Expected Result___ %@",[dateFormatter stringFromDate:date]); //2013-03-05 07:37:26
回答3:
Try this : issue is Time zone.
+ (NSDate *) getDate:(NSString *) dateStr
{
NSArray *dateStrParts = [dateStr componentsSeparatedByString:@"T"];
NSString *datePart = [dateStrParts objectAtIndex:0];
NSString *timePart = [dateStrParts objectAtIndex:1];
NSString *t = [[timePart componentsSeparatedByString:@"."] objectAtIndex:0];
NSString *newDateStr = [NSString stringWithFormat:@"%@ %@",datePart,t];
//2013-03-05 07:37:26
NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
[df setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate *date = [df dateFromString:newDateStr];
DLog(@"%@",date);
return date;
}
来源:https://stackoverflow.com/questions/15307892/issue-with-nsdate-from-nsdatecomponents