---

// 獲取當月的天數
- (NSInteger)getNumberOfDaysInMonth
{
NSCalendar * calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian]; // 指定日歷的算法 NSGregorianCalendar - IOS 8
NSDate * currentDate = [NSDate date];
NSRange range = [calendar rangeOfUnit:NSCalendarUnitDay //NSDayCalendarUnit - IOS 8
inUnit: NSCalendarUnitMonth //NSMonthCalendarUnit - IOS 8
forDate:currentDate];
return range.length;

}

/**
 *  獲取當月中一切天數是周幾
 */
- (void) getAllDaysWithCalender
{
    NSUInteger dayCount = [self getNumberOfDaysInMonth]; //一個月的總天數
    NSDateFormatter * formatter = [[NSDateFormatter alloc] init];
    NSDate * currentDate = [NSDate date];
    [formatter setDateFormat:@"yyyy-MM"];
    NSString * str = [formatter stringFromDate:currentDate];
    [formatter setDateFormat:@"yyyy-MM-dd"];
    NSMutableArray * allDaysArray = [[NSMutableArray alloc] init];
    for (NSInteger i = 1; i <= dayCount; i++) {
        NSString * sr = [NSString stringWithFormat:@"%@-%ld",str,i];
        NSDate *suDate = [formatter dateFromString:sr];
        [allDaysArray addObject:[self getweekDayWithDate:suDate]];
    }
    NSLog(@"allDaysArray %@",allDaysArray);
}

/**
 *  取得某天的數據
 *
 *  獲取指定的日期是星期幾
 */
- (id) getweekDayWithDate:(NSDate *) date
{
    NSCalendar * calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; // 指定日歷的算法
    NSDateComponents *comps = [calendar components:NSWeekdayCalendarUnit fromDate:date];

    // 1 是周日，2是周一 3.以此類推
    return @([comps weekday]);

}

／/獲取的時間是國際規范時間，中國用的是東八區的時間，所以你要把時間本地化，然後就行了

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