从命令行构建的Swift 4 MacOS应用未调用AppDelegate#applicationDidFinishLaunching [英] AppDelegate#applicationDidFinishLaunching not called for Swift 4 MacOS app built from command line

问题描述

这是完整的代码:

main.swift

import Cocoa

let delegate = AppDelegate()
NSApplication.shared.delegate = delegate
NSApplicationMain(CommandLine.argc, CommandLine.unsafeArgv)

AppDelegate.swift

import Cocoa

class AppDelegate: NSObject, NSApplicationDelegate {
  override init() {
    Swift.print("AppDelegate.init")
    super.init()
    Swift.print("AppDelegate.init2")
  }

  func applicationDidFinishLaunching(aNotification: NSNotification) {
    Swift.print("AppDelegate.applicationDidFinishLaunching")
  }

  func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
    Swift.print("AppDelegate.applicationShouldTerminateAfterLastWindowClosed")
  }
}

然后我用以下代码进行编译:

Then I compile it with:

swiftc Sources/*
./main

它记录:

AppDelegate.init
AppDelegate.init2

但是随后它不记录其他任何内容，因此我使用CTRL + C将其关闭.不知道为什么它没有达到applicationDidFinishLaunching方法.想知道是否有人知道此问题的解决方法，似乎只有一种方法需要在某处调用，但我不确定.

But then it doesn't log anything else, so I close it with CTRL+C. Not sure why it's not reaching the applicationDidFinishLaunching method ever. Wondering if one knows of a fix for this, it seems like there is just one method that needs to be called somewhere, but I'm not sure.

我认为这可能导致其他问题，例如NSMenu无法正常工作.

I think this may be causing other issues such as NSMenu not working.

推荐答案

万岁，这仅仅是因为方法的格式，我想这是默默地失败了.

Hooray, it was just because of the format of the methods, which were silently failing I guess.

func applicationWillFinishLaunching(_ notification: Notification) {
  Swift.print("AppDelegate.applicationWillFinishLaunching")
}

func applicationDidFinishLaunching(_ notification: Notification) {
  Swift.print("AppDelegate.applicationDidFinishLaunching")
}

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