Ios UICollectionView未正确返回单元格

我正在使用collectionView创建日历。。。到目前为止，我把所有的工作日都安排得很好，但我对编号的日子有问题。collectionView总是返回31天，而不检查该月是包含30天还是31天。。我错在哪里？一些疏忽的错误？你能帮助我吗？这是我用来获取日历的代码

+(NSInteger)dayOfMonthFromDate:(NSDate *)date {
    NSCalendar *calendar = [NSCalendar currentCalendar];
    NSRange range = [calendar rangeOfUnit:NSCalendarUnitDay inUnit:NSCalendarUnitMonth forDate:date];
    NSInteger numberOfDayInMonth = range.length;
    return numberOfDayInMonth;
}

+(void)buildSmartCalendarDayWithWeekArray:(NSMutableArray *)week andDay:(NSMutableArray *)day {

    NSCalendar *calendar = [NSCalendar currentCalendar];
    NSDate *now = [NSDate date];

    /***** YEAR ****/
    NSInteger year = [calendar component:NSCalendarUnitYear fromDate:now];

    /**** MONTH ****/
    NSInteger month = [calendar component:NSCalendarUnitMonth fromDate:now];


    NSDateComponents *components = [[NSDateComponents alloc] init];
    components.day = 1;
    components.month = month+4;
    components.year = year;

    NSDate *date = [calendar dateFromComponents:components];
    NSDateComponents *compWeek = [calendar components:NSCalendarUnitWeekday fromDate:date];

    NSInteger weekDay = [compWeek weekday];

    /******* Numero di giorni del mese in corso *******/
    /*************************************************/
    NSInteger numberOfDay = [KPSmallCalendarDayData dayOfMonthFromDate:[NSDate date]];

    //------------------------------------------------------------------//
    /******* Recupera in quale giorno siamo *******/
    /*************************************************/
    NSUInteger todayWeekDay = weekDay-1;

    /******* Crea un ciclo for per la suddivisione di ogni giorno del mese in forma testuale *******/
    /*****************************************************************************/

    for (NSInteger initialDay = 1;  initialDay <= numberOfDay; initialDay ++) {

        // Crea l'array contenente tutti giorni del mese dal LUN alla DOM
        NSDateFormatter *dayFormat = [[NSDateFormatter alloc] init];

        NSString *dayString = [NSString stringWithFormat:@"%@", [[dayFormat shortWeekdaySymbols] objectAtIndex:todayWeekDay]];
        NSString *uppercase = [dayString uppercaseString];
        [week addObject:uppercase];

        todayWeekDay ++;

        // Crea l'array contenente la numerazione delle celle
        NSNumber *totalDay = [NSNumber numberWithInteger:initialDay];
        [day addObject:totalDay];

        if (todayWeekDay >6) todayWeekDay = 0;
    }
}

+（NSInteger）dayOfMonthFromDate:（NSDate*）日期{
NSCalendar*日历=[NSCalendar currentCalendar]；
NSRange range=[日历范围单位：NSCalendarUnitDay单位：NSCalendarUnitMonth日期：日期]；
NSInteger numberOfDayInMonth=范围.length；
返回每月的天数；
}
+（void）buildSmartCalendarDayWithWeekArray:（NSMutableArray*）周和日：（NSMutableArray*）日{
NSCalendar*日历=[NSCalendar currentCalendar]；
NSDate*现在=[NSDate日期]；
/*****年****/
NSInteger year=[日历组件：NSCalendarUnitYear from日期：现在]；
/****月****/
NSInteger month=[日历组件：NSCalendarUnitMonth fromDate:now]；
NSDateComponents*components=[[NSDateComponents alloc]init]；
组分：日=1；
组件。月份=月份+4；
组件。年=年；
NSDate*date=[calendar dateFromComponents:components]；
NSDateComponents*compWeek=[日历组件：NSCalendarUnitWeekday fromDate:date]；
NSInteger weekDay=[compWeek weekDay]；
/*******科尔索省的梅斯省第二大城市*******/
/*************************************************/
NSInteger numberOfDay=[KPSmallCalendarDayData dayOfMonthFromDate:[NSDate date]]；
//------------------------------------------------------------------//
/*******在奎尔吉奥尔诺西亚莫复发*******/
/*************************************************/
NSUInteger todayWeekDay=weekDay-1；
/*******为ogni giorno del mese的Suddivisine提供形式测试的Crea un ciclo*******/
/*****************************************************************************/
对于（NSInteger initialDay=1；initialDay 6）todayWeekDay=0；
}
}

也许

1. NSDate *date = [calendar dateFromComponents:components];
2. NSDateComponents *compWeek = [calendar components:NSCalendarUnitWeekday fromDate:date];
3.
4. NSInteger weekDay = [compWeek weekday];
5. 
6. /******* Numero di giorni del mese in corso *******/
7. /*************************************************/
8. NSInteger numberOfDay = [KPSmallCalendarDayData dayOfMonthFromDate:[NSDate date]];

看起来您想从第1行开始使用

date

，但您正在第8行传递一个新的

date

对象（

[NSDate date]

它==今天）。第8行应该是：

NSInteger numberOfDay = [KPSmallCalendarDayData dayOfMonthFromDate:date];