没有Storyboard，NSApplicationDelegate无法正常工作 [英] NSApplicationDelegate not working without Storyboard

问题描述

我正在尝试在macOS Sierra上的Xcode 8(稳定版)中创建没有情节提要的macOS应用程序.但是，我的AppDelegate甚至没有被启动.这是我的代码:

I'm attempting to create a macOS application without a storyboard in Xcode 8 (stable) on macOS Sierra. However, my AppDelegate is not even being initiated. Here's the code I have:

import Cocoa

@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {
    var window: NSWindow!

    override init() {
        super.init()
        print("Init")
    }

    func applicationDidFinishLaunching(_ aNotification: Notification) {
        print("Finished launching")

        // Create a window
        window = NSWindow()

        // Add the view controller
        let viewController = ViewController()
        window.contentView?.addSubview(viewController.view)

        // Show the window
        window.makeKeyAndOrderFront(nil)
    }
}

init或applicationDidFinishLaunching(_ aNotification: Notification)都没有被调用.任何帮助将不胜感激.

Neither init or applicationDidFinishLaunching(_ aNotification: Notification) is being called. Any help would be much appreciated.

推荐答案

您需要在此处做一些事情

You need to do a few things here

1. 从plist删除NSMainStoryboardFile键/值
2. 创建一个NSApplication子类并将其分配给Principal Class (NSPrincipalClass)键.

1. Delete NSMainStoryboardFile key/value from the plist
2. Create a NSApplication subclass and assign it to the Principal Class (NSPrincipalClass) key.

该名称必须与您的模块名称完全匹配.

The name must be fully qualified with your module name.

1. 在NSApplication子类中手动实例化您的委托，并将其分配给delegate属性.

1. Manually instantiate your delegate in your NSApplication subclass and assign it to the delegate property.

确保对您的委托对象保持强烈的引用.香港专业教育学院只是在这里使用let.

Make sure you keep a strong reference to your delegate object. Ive just used a let here.

class GrookApplication: NSApplication {

    let strongDelegate = AppDelegate()

    override init() {
        super.init()
        self.delegate = strongDelegate
    }

    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

}

例如一个简单的委托人.

e.g a simple delegate.

@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {

    override init() {
        super.init()
        print("wassup")
        //conceptual proof of life init override
        //wait until applicationDidFinishLaunching , specially for UI
    }

    var window: NSWindow!
    func applicationDidFinishLaunching(_ aNotification: Notification) {
        print("yo! I'm alive")
        window = NSWindow(contentRect: NSRect(x: 0, y: 0, width: 200, height: 200), styleMask: .titled, backing: .buffered, defer: false)
        window.makeKeyAndOrderFront(nil)
    }

}

EDIT 2018 (已验证高塞拉山脉)

EDIT 2018 Verified High Sierra

不要不要尝试在init内执行窗口或视图控制器初始化，这将导致双重应用初始化问题并崩溃.该应用程序在此阶段尚未完成启动.等到applicationDidFinishLaunching触发所有重要操作.

Do NOT try and do window or view controller initialisation inside init this leads to double app initialisation issues and crashing. The app has not finished launching at this stage. Wait until applicationDidFinishLaunching to fire any significant operations.

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