时间戳转时间晚了8个小时为什么呀？

Question

NSDate* date = [NSDate dateWithTimeIntervalSince1970: message.receivedTime/1000.0];
NSString* dateString = [NSString stringWithFormat:@"%@",date];
NSArray *a = [dateString componentsSeparatedByString:@" "];
groupCell.time.text = [a[1] substringToIndex:[a[1] length] -3];

Answer 1

NSDate* date = [NSDate dateWithTimeIntervalSince1970: message.receivedTime/1000.0];
NSTimeZone zone = [NSTimeZone systemTimeZone];
NSInteger interval = [zone secondsFromGMTForDate: date];
NSDate *localeDate = [date dateByAddingTimeInterval: interval];
NSString dateString = [NSString stringWithFormat:@"%@",localeDate];
NSArray *a = [dateString componentsSeparatedByString:@" "];
groupCell.time.text = [a[1] substringToIndex:[a[1] length] -3];