“AnyObject”类型的值没有成员''

For school, I am making an app about the Holocaust. I need to display info about the camps on a detailViewController, but it isn't working. I am able to access the variable's "name" value (sorry if my terminology is wrong), but nothing else. Other posts aren't in Swift or don't relate to my specific issue, so I can't find a solution.

对于学校,我正在制作关于大*的应用程序。我需要在detailViewController上显示有关阵营的信息,但它无法正常工作。我能够访问变量的“名称”值(对不起,如果我的术语错误),但没有别的。其他帖子不在Swift中或与我的具体问题无关,所以我找不到解决方案。

Here is the code from the class that creates the variable type:

以下是创建变量类型的类中的代码:

class DeathCamp: NSObject {

var name:String = ""
var locationCountry:String = ""
var jewishDeathCount:Int = 0
init(name:String, locationCountry:String, jewishDeathCount:Int){
    self.name = name
    self.locationCountry = locationCountry
    self.jewishDeathCount = jewishDeathCount
}



}

Here is the code where the detail items are set to the arrays:

以下是将详细信息项设置为数组的代码:

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)     {
    if segue.identifier == "showDetail" {
        if let indexPath = self.tableView.indexPathForSelectedRow {
            let deathCampNewObject = deathCampArray[indexPath.row]
            let countryDeathNewObject = countryArray[indexPath.row]
            let controller = (segue.destinationViewController as! UINavigationController).topViewController as! DetailViewController
            controller.detailItemDeath = deathCampNewObject
            controller.detailItemCountry = countryDeathNewObject
            controller.navigationItem.leftBarButtonItem = self.splitViewController?.displayModeButtonItem()
            controller.navigationItem.leftItemsSupplementBackButton = true
        }
    }
}

In response to a suggestion from a comment, here is my entire code for the DetailViewController:

回应评论的建议,这是我的DetailViewController的完整代码:

import UIKit

class DetailViewController: UIViewController {

    @IBOutlet weak var detailDescriptionLabel: UILabel!

@IBOutlet var percentageJewsKilled: UILabel!
@IBOutlet var jewsKilled: UILabel!
let masterViewController = MasterViewController()

var detailItemDeath: AnyObject? {
    didSet {
        // Update the view.
        self.configureView()
    }
}
var detailItemCountry: AnyObject? {
    didSet {
        // Update the view.
        self.configureView()

    }
}

func configureView() {
    // Update the user interface for the detail item.
    if let detail = self.detailItemDeath {
        if let label = self.detailDescriptionLabel {
            label.text = detailItemDeath?.name
        }
        if let label = self.jewsKilled {
            label.text = "\(detailItemDeath?.jewishDeathCount)"
        }
    }
}
override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    self.configureView()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

1 个解决方案

#1

Change

if let detail = self.detailItemDeath

如果让detail = self.detailItemDeath

to:

if let detail = self.detailItemDeath as? DeathCamp

如果让detail = self.detailItemDeath为? DeathCamp

The code above attempts a cast of detailItemDeath to an object of type DeathCamp.

上面的代码尝试将detailItemDeath转换为DeathCamp类型的对象。

Also change

detailItemDeath?.name

to:

detailItemDeath.name

You've already attempted an unwrap of detailItemDeath with the if let syntax, optional chaining is redundant and therefore erroneous.

您已尝试使用if let语法展开detailItemDeath,可选链接是多余的,因此是错误的。

And, I can't believe I missed this, rename detailItemDeath in detailItemDeath.name to detail!

而且,我无法相信我错过了这一点,将detailItemDeath中的detailItemDeath重命名为detail!

#1