iOS计算两个时间点之间的工作日

由于具体内容是参照了别人的代码，所以如果大家看到有跟哪个哥们相似的地方，请大家谅解，不算纯原创，但是计算工作日是够用的，网上借鉴的有些改动

//计算工作日

- (NSInteger)workingDaysWithBeginDateString:(NSString *)beginString andEndDateString:(NSString *)endString {

    

    NSDate *beginDate = [self dateFromString:beginString];

    NSDate *endDate = [self dateFromString:endString];

    

    NSDateComponents *beginComponets = [[NSCalendar autoupdatingCurrentCalendar] components:NSCalendarUnitWeekday fromDate:beginDate];

    NSInteger beginWeekDay = [beginComponets weekday];

    NSDateComponents *endComponets = [[NSCalendar autoupdatingCurrentCalendar] components:NSCalendarUnitWeekday fromDate:endDate];

    NSInteger endWeekDay = [endComponets weekday];

    NSTimeInterval time = [endDate timeIntervalSinceDate:beginDate];

    

    float oneWeekDay = 7 - beginWeekDay;

    float allDay = time / (24 * 60 * 60);

    float day = 0.0;

    

    if (allDay >= oneWeekDay + 2) {

        float otherDay = allDay - (oneWeekDay + 2);

        float ResidualDay = otherDay - ((int)otherDay / 7) * 2;

        day = ResidualDay + oneWeekDay;

    }else{

        day = endWeekDay - beginWeekDay;

    }

    return day;

}

//日期转字符串

- (NSString *)stringDateToDateString:(NSDate *)mydate {

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

    [dateFormatter setDateFormat:@"yyyy-MM-dd"];

    NSString *stringDate = [dateFormatter stringFromDate:mydate];

    return stringDate; 

}