Swift，此类不符合键 "array"的键值编码

Question

我正在开发弹出窗口 Controller ，在打开弹出窗口时，我将数组(属性)传输到popoverController(SortingPopoverController)。对于 View ，我创建了popView.xib，并在firstOwner中附加了“SortingPopovercontroller”。

我的代码如下

    func sortingPressed(sender: AnyObject){
            var sortingPopView = SortingPopoverController(nibName: "PopView",bundle: nil )

     var sortingPopoverController = UIPopoverController(contentViewController: sortingPopView)

      sortingPopoverController.popoverContentSize = CGSize(width: 250, height: 100)


      sortingPopoverController.presentPopoverFromBarButtonItem(sortingBtn, permittedArrowDirections: UIPopoverArrowDirection.Up
       , animated: true)

      sortingPopoverController.setValue(properties, forKey: "properties") //i am passing this array to the "sorting controller"

  }

///排序 Controller 代码

    class SortingPopoverController: UIViewController
        {
            var properties:[Property] = [Property]()
            var propertyNameSrt = false
            var addressSrt = false
            var ascSorting = false
            var utility = Utility()

             override func viewDidLoad()
                {
                     super.viewDidLoad()

                     let propertyNameSorting = UITapGestureRecognizer(target: self, action: "propertyNameSorting:")
                      self.propertyNameView.addGestureRecognizer(propertyNameSorting)

                     let addressSorting = UITapGestureRecognizer(target: self, action: "addressSorting:")
                     self.addressNameView.addGestureRecognizer(addressSorting)
                     imgTickPropertyName.hidden = true
                     imgTickAddress.hidden = true

                     properties = self.valueForKey("properties") as! [Property]
                     println(properties.count)

                }
        }

在 View 确实加载时，我收到错误，因为“此类的关键属性不符合键值编码”

Answer 1

sortingPopoverController 是一个 UIPopoverController。您打算使用 sortingPopView，其中包含 SortingPopoverController。

sortingPopView.setValue(properties, forKey: "properties") //i am passing this array to the "sorting controller"

<小时/>

不需要 Key-Value Coding语法在这里。

sortingPopView.properties = properties

会做同样的事情。注意:上面的内容也是类型安全的，因此如果 sortingPopView.properties 和 properties 的类型不同，您将收到警告或错误。