获取对应日期是周几

//获取对应日期是周几

+ (NSInteger)getWeekDayFromDate:(NSDate *)date{

    NSArray *tempWeek = @[@"7",@"1",@"2",@"3",@"4",@"5",@"6"];

    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];

    NSDateComponents *comps = [[NSDateComponents alloc] init];

  NSInteger unitFlags = NSCalendarUnitYear |NSCalendarUnitMonth |

NSCalendarUnitDay |NSCalendarUnitWeekday | NSCalendarUnitHour

|NSCalendarUnitMinute |NSCalendarUnitSecond;

    comps = [calendar components:unitFlags fromDate:date];

    //  1、2、3、4、5、6、7 分别对应 周日、周一、周二、周三、周四、周五、周六

    NSInteger week = [comps weekday];

    NSLog(@"---%ld",week);

    //  调整后 1 代表 周一

    return  [tempWeek[week-1] integerValue] ;

}