swift - 为什么该操作无法连接到目标类 NSViewController？

Question

我正在尝试学习 Swift，但我似乎陷入了这个(不可否认，可能非常简单)问题 - 错误如下:

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

这是我的代码。我正在 Storyboard 中设计我的界面，并通过 @IB(Outlet/Action) 将它连接到代码。

// 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
    }

}

出于某种原因，在绘制场景和 NSButton 时，会生成如上所示的错误消息。是什么导致了错误，我该如何解决？

Answer 1

我知道了!对于遇到此问题的任何其他人，以下是解决方法:

事实证明，“自定义类”下有一个名为“模块”的小下拉菜单，默认情况下设置为无。将其设置为 tarcrypt(或适合您的任何可用选项)，这应该可以修复错误。

感谢大家的帮助!