在.xib中的UICollectionViewCell中使用IBOutlet时，NSUnknownKeyException

Question

我一直在尝试使用IBOutlet从标签中添加标签到自定义UICollectionViewCell类，该类打算用作我拥有的UICollectionView的单元格在另一个xib中，但是当我添加插座时，我在创建的标签参考上看到一个NSUnknownKeyException，没有插座参考，单元的内容将正确加载，但是我希望能够操纵单元中的标签

这是我的父母xib课堂上的内容：

class Calendar : UIView, UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout
{
   let nibName: String = "Calendar"
   let calendarDayNibName: String = "CalendarDay"
   let calendarReusableCellName: String = "CalendarCell"
   let calendarDaysLimit: Int = 35
   var contentView: UIView?

   @IBOutlet var sundayLabel: UILabel!
   @IBOutlet var mondayLabel: UILabel!
   @IBOutlet var tuesdayLabel: UILabel!
   @IBOutlet var wednesdayLabel: UILabel!
   @IBOutlet var thursdayLabel: UILabel!
   @IBOutlet var fridayLabel: UILabel!
   @IBOutlet var saturdayLabel: UILabel!
   @IBOutlet var calendarDays: UICollectionView!

   required init?(coder aDecoder: NSCoder) {
       super.init(coder: aDecoder)

       guard let view = self.loadViewFromNib() else { return }
       view.frame = self.bounds
       self.addSubview(view)
       contentView = view
       contentView?.isUserInteractionEnabled = true
   }

   override func awakeFromNib()
   {
       super.awakeFromNib()

       calendarDays.register(UINib(nibName: calendarDayNibName, bundle: nil), forCellWithReuseIdentifier:calendarReusableCellName)
       calendarDays.dataSource = self
   }

   func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int
   {
       return calendarDaysLimit;
   }

   func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell
   {
       let cell = collectionView.dequeueReusableCell(withReuseIdentifier: calendarReusableCellName, for: indexPath)
       configureCell(cell: cell)
       return cell
   }

   private func configureCell(cell: UICollectionViewCell)
   {
       //does nothing right now, placeholder for if configuring cell on
       //collection view load
   }

   private func loadViewFromNib() -> UIView? {
       let bundle = Bundle(for: type(of: self))
       let nib = UINib(nibName: nibName, bundle: bundle)
       self.isUserInteractionEnabled = true
       return nib.instantiate(withOwner: self, options: nil).first as? UIView
   }

   public func loadCalendarDays(month: Int)
   {
       //todo: write day loading logic here
   }
}

这是子xib类（UICollectionViewCell）：

class CalendarDay: UICollectionViewCell
{
   @IBOutlet weak var dayLabel: UILabel!  
}

如果可以帮助查看以下内容，这是我的总体项目：https://github.com/CharlemagneVI/practice-calendar

Answer 1

您将类和IBOutlet连接设置为错误...好吧，不是很正确...

在CalendarDay.xib中，File's Owner的类应为默认的NSObject：

，它应该不具有任何连接：

单元格对象本身的类应为CalendarDay：

和那是您建立联系的地方：

应该这样做：）