获取时间相差8小时的处理办法：
现将需要转换的时间转换为nsdata：timeUtc
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"YYYY/MM/dd hh:mm:ss"];
NSDate *te = [self getNowDateFromatAnDate:timeUtc];
NSString *str = [NSString stringWithFormat:@"%@",te];
dateString = [str substringToIndex:19];
- (NSDate *)getNowDateFromatAnDate:(NSDate *)anyDate
{
//设置源日期时区
NSTimeZone* sourceTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"UTC"];//或GMT
//设置转换后的目标日期时区
NSTimeZone* destinationTimeZone = [NSTimeZone localTimeZone];
//得到源日期与世界标准时间的偏移量
NSInteger sourceGMTOffset = [sourceTimeZone secondsFromGMTForDate:anyDate];
//目标日期与本地时区的偏移量
NSInteger destinationGMTOffset = [destinationTimeZone secondsFromGMTForDate:anyDate];
//得到时间偏移量的差值
NSTimeInterval interval = destinationGMTOffset - sourceGMTOffset;
//转为现在时间
NSDate* destinationDateNow = [[NSDate alloc] initWithTimeInterval:interval sinceDate:anyDate];
return destinationDateNow;
}
