AppDelegate.swift crashes macOS App

Question

当我尝试启动应用程序时，它只是崩溃。它给出的错误是unrecognized selector sent to instance 0x608000000ac0，并且在第4行上显示了错误的错误。

import Cocoa
@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate { //This is where I get the error
    @IBOutlet weak var window: NSWindow!
    func applicationDidFinishLaunching(_ aNotification: Notification) {
        // Insert code here to initialize your application
    }
    func applicationWillTerminate(_ aNotification: Notification) {
        // Insert code here to tear down your application
    }
    func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
        return true
    }
}

如何解决此错误？提前致谢，aaronjam

Answer 1

尝试解决问题一个多小时后，我删除了目标（当然，在备份代码之后）并制作了一个新的目标。感谢您的帮助，@overd！