Swift 为什么操作无法连接到目标类NSViewController？

我正在尝试学习Swift，但我似乎被这个（诚然，可能很简单）问题所困扰——错误如下：

Could not connect action, target class NSViewController does not respond to -(encbutton/decbutton)

这是我的密码。我正在故事板中设计接口，并通过

@IB（Outlet/Action）

将其连接到代码

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出于某种原因，在绘制场景和NSB按钮时，会生成如上所示的错误消息。导致错误的原因是什么？如何修复它？

听起来好像您将UI元素连接到了文件的所有者对象，该对象是NSApplication的一个实例

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如果您还没有这样做，您需要将NSObject从Xcode 4中的对象库调色板拖到布局左侧的空白处。完成此操作并选择它后，选择identity inspector，然后在类字段中输入“WindowController”

我已经找到了它！对于遇到此问题的其他人，以下是解决方法：

结果是在“定制类”下有一个小下拉列表，标题为“模块”，默认情况下设置为“无”。将其设置为

tarcrypt

（或任何适合您的可用选项），这将修复错误

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谢谢你的帮助

这可能是我遇到的最可笑的令人沮丧的错误。有人知道为什么会这样吗？我在其他我建造的项目中看不到这一点。

// ViewController.swift
import Cocoa
import Foundation

class TabViewController: NSTabViewController {
// This has been changed from NSViewController to NSTabViewController as I have replaced the initial single-view with a two-tab-view.

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

    override var representedObject: AnyObject? {
        didSet {
        // Update the view, if already loaded.
        }
    }

}

public class EncViewController: NSViewController {
    // This is for the first tab, encrypt

    @IBOutlet var encdirfield: NSTextField!
    @IBOutlet var encpassfield: NSSecureTextField!
    @IBOutlet var enclogfield: NSTextField!

    @IBOutlet var encbutton: NSButton!

    @IBAction func startenc(sender: NSButton) { // here's the problem. the function isn't triggered when the button is pressed
        // get values
        encdir = encdirfield.stringValue
        encpass = encpassfield.stringValue

        tarcrypt.enc();
        // this is an function that leads to an NSTask that runs a binary I wrote (not related).
        // definitely not the cause of the problem because running it independently works fine
    }


}

public class DecViewController: NSViewController {
    // and this is for the second tab, decrypt      

    @IBOutlet var decdirfield: NSTextField!
    @IBOutlet var decpassfield: NSSecureTextField!
    @IBOutlet var declogfield: NSTextField!

    @IBOutlet var decbutton: NSButton!
    @IBAction func startdec(sender: NSButton) { // here's the same problem, again. the function isn't triggered when the button is pressed
        // get values
        encdir = encdirfield.stringValue
        encpass = encpassfield.stringValue

        tarcrypt.dec();
        // this is an function that leads to an NSTask that runs a binary I wrote (not related).
        // definitely not the cause of the problem because running it independently works fine
    }

}