1 NSDate *date = [NSDate date];//获取当前时间 2         NSTimeZone *zone = [NSTimeZone systemTimeZone];//修改时区 3         NSInteger interval1 = [zone secondsFromGMTForDate: date];//修改时区 4         _localDate1 = [date  dateByAddingTimeInterval: interval1];//修改时区 5         NSLog(@"~~~~~~~~~~~~~今天%@\n", _localDate1); 6          7          8         NSCalendar *calendar = [NSCalendar currentCalendar]; 9         NSDateComponents *comp = [calendar components:NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSWeekdayCalendarUnit |    NSDayCalendarUnit fromDate:_localDate1];10 11         //获取当前年月日12         NSInteger year = [comp year];13         NSInteger month = [comp month];14         NSInteger day = [comp day];15         16         NSDateComponents * components = [[NSDateComponents alloc]init];17 18         //设定19         [components setYear:year];20         [components setMonth:month];21         [components setDay:day];22         [components setHour:16];23         [components setMinute:32];24         25         NSCalendar *current = [NSCalendar currentCalendar];26         27         NSDate *setDate1 = [current dateFromComponents:components];28         //默认的时区都是格林尼治0时区，我们在东8区29         NSTimeZone *zone2 = [NSTimeZone systemTimeZone];//修改时区30         NSInteger interval2 = [zone2 secondsFromGMTForDate: setDate1];//修改时区31         _localDate2 = [setDate1  dateByAddingTimeInterval: interval2];//修改时区32         33         NSLog(@"-----------%@\n",_localDate2);34 //_localDate1-_localDate2，得到的结果默认为秒，可以自己换算35 NSInteger lastTime = [_localDate2 timeIntervalSinceDate:_localDate1]/60;36     NSLog(@"!!!!!!!!!!!!%ld\n",lastTime);

获取day的时候会多加一天，不知道是什么情况