摘要：
今天有个新手在群里问这问题，我也是新手，记得以前看过时间类就写的这2种方法给他。方法一：NSDate *date = [NSDate date];NSCalendar *cal = [NSCalendar currentCalendar];NSDateComponents *components = [cal components:NSHourCalendarUnit fromDate:date];NSString *strHour = [NSString stringWithFormat:@"hour is %d", [components hour]];方法二：NSDa 阅读全文