有兩種方式解決這個(gè)問題

1、轉(zhuǎn)化為當(dāng)前自己想要的北京時(shí)間

//獲取本地時(shí)區(qū)

NSTimeZone *tZone = [NSTimeZone localTimeZone];

//? ? 獲取日歷

NSCalendar *calendar = [NSCalendar currentCalendar];

//獲取系統(tǒng)當(dāng)前時(shí)間

NSDate *currentDate = [NSDate date];

//設(shè)置日歷的時(shí)區(qū)

[calendar setTimeZone:tZone];

//取出當(dāng)前的時(shí)分秒

NSDateComponents *currentTime = [calendar components:NSCalendarUnitSecond|NSCalendarUnitMinute|NSCalendarUnitHour|NSCalendarUnitTimeZone fromDate:currentDate];

2、發(fā)現(xiàn)從日歷中取出的時(shí)間日期不對(duì)，實(shí)際上iOS默認(rèn)時(shí)間是????時(shí)間（誰讓蘋果是人家美國公司呢）。當(dāng)我們把日歷取出的時(shí)間轉(zhuǎn)化為String類型時(shí)，時(shí)間就默認(rèn)為當(dāng)前北京時(shí)間啦

[[Utility dateFormatter] stringFromDate:date]；

+ (NSDateFormatter *)dateFormatter

{

static NSDateFormatter *dateFormatter;

if(!dateFormatter){

dateFormatter = [NSDateFormatter new];

dateFormatter.dateFormat = @"yyyy-MM-dd";

}

return dateFormatter;

}