AppDelegate.swift使macOS App崩溃

Question

When I try to launch my app, it simply crashes. The error it gives is unrecognized selector sent to instance 0x608000000ac0 and the error shows up at my AppDelegate.swift file on line 4. Here is the full AppDelegate.swift file:

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
    }
}

How do I fix this error? Thanks in advance, Aaronjam

Answer 1

After trying to fix the problem for over an hour, I deleted my target (after backing up my code, of course) and made a new one. Thanks for your help, @OverD!