MacOS使用Swift 4更改菜单栏图标

问题描述

使用MacOS Mojave中新的黑暗"模式，我想更改应用程序的菜单栏图标.默认情况下，它是一只白色的黑熊，而不仅仅是反转颜色，我想使用打bear熊的图标.

With the new Dark mode in MacOS Mojave I would like to change the menubar icon of my app. In default, it is a white black bear and rather than just inverting the colors I would like to use an icon of a snoozing bear.

我所有的代码都在applicationDidFinishLaunching的AppDelegate中设置了菜单栏图标.所以我的问题是:有没有办法检查暗模式是否已激活，然后使用swift 4更改图标?

I have all my code that sets up the menubar icon in AppDelegate in applicationDidFinishLaunching. So my question is: Is there a way to check if the dark mode was activated and then change the icon using swift 4?

我尝试过:

var inDarkMode: Bool {
  let mode = UserDefaults.standard.string(forKey: "AppleInterfaceStyle")
  return mode == "Dark"
}

，然后是一个if语句

button.image = NSImage(named: NSImage.Name(rawValue: "StatusBarButtonImage"))

但是由于代码在applicationDidFinishLaunching中，因此只会检查一次.

but because the code is in applicationDidFinishLaunching this will only check once.

非常感谢您的帮助.

推荐答案

正如Leo在评论中指出的， Apple的文档清楚地解释了该过程:

As pointed to by Leo in the comments, Apple's docs explain the process clearly:

1. 打开资产目录并添加新的图像资产.
2. 在右侧菜单中，单击外观上的下拉菜单:

1. open your asset catalog and add a new image asset.
2. in the right side menu, click on the dropdown at Appearances:

默认情况下应为 Any ，将其更改为 Any，Dark 或 Any，Light，Dark 以自定义所需的图标用于每种情况.

It should be Any by default, change it to Any, Dark, or Any, Light, Dark to customize the icons you want to use for each case.

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