转换PST格式的字符串日期NSDate

Question

我想在目标C中将@"2016-04-15T15:00:00-07:00"转换为NSDate。我正在使用NSdateFormatter @"yyyy-MM-dd'T'HH:mm:ssZZZZZ"，但没有获得NSDate

我必须使字符串日期从服务器到PST时间NSDate

代码：

NSString *strDate = @"2016-04-15T22:00:00Z";
NSDate* ts_utc;
NSDateFormatter* df_utc = [[NSDateFormatter alloc] init];
[df_utc setTimeZone:[NSTimeZone timeZoneWithName:@"UTC"]];
[df_utc setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZZZZZ"];
ts_utc = [df_utc dateFromString:strDate];

NSDateFormatter* df_local = [[NSDateFormatter alloc] init];
[df_local setTimeZone:[NSTimeZone timeZoneWithName:@"PST"]];
[df_local setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZZZZZ"];
NSString* ts_local_string = [df_local stringFromDate:ts_utc];

NSDate *date = [df_local dateFromString:ts_local_string];

请提出建议。

Answer 1

编辑

我和你有同样的问题，我用这种方式解决了

NSString *strDate = @"2016-04-15T22:00:00Z";
NSDate* ts_utc;
NSDateFormatter* df_utc = [[NSDateFormatter alloc] init];
[df_utc setTimeZone:[NSTimeZone timeZoneWithName:@"UTC"]];
[df_utc setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZZZZZ"];
ts_utc = [df_utc dateFromString:strDate];
NSTimeZone *destinationTimeZone = [NSTimeZone timeZoneWithName:@"PST"];
NSInteger timeZoneHourOffset = (NSInteger) ([destinationTimeZone secondsFromGMTForDate:ts_utc] / 3600.0); //geting the time offset between UTC and PST
NSDate *pstDate = [ts_utc dateByAddingTimeInterval:timeZoneHourOffset * 60 * 60]; //applying that offset into ts_utc NSDate

希望，这会帮你的！