swift - 如何将 NSWorkspace 通知迁移到 Swift 4？

Question

在 Swift 3 中，我使用以下代码注册了睡眠和唤醒通知：

let notificationCenter = NSWorkspace.shared.notificationCenter
notificationCenter.addObserver(self, selector: #selector(AppDelegate.sleepListener), name: NSNotification.Name.NSWorkspaceWillSleep, object: nil)
notificationCenter.addObserver(self, selector: #selector(AppDelegate.wakeUpListener), name: NSNotification.Name.NSWorkspaceDidWake, object: nil)

但是在迁移到 Swift 4 后，我在应用建议的修复程序后收到此错误：

Type 'NSNotification.Name' has no member 'NSWorkspace'

我如何在 Swift 4 中做到这一点？

Answer 1

要解决此问题，您需要将引用通知名称的代码从 调整NSNotification.Name.NSWorkspaceWillSleep为NSWorkspace.willSleepNotification。Swift 4 版本是：

let notificationCenter = NSWorkspace.shared.notificationCenter
notificationCenter.addObserver(self, selector: #selector(AppDelegate.sleepListener), name: NSWorkspace.willSleepNotification, object: nil)
notificationCenter.addObserver(self, selector: #selector(AppDelegate.wakeUpListener), name: NSWorkspace.didWakeNotification, object: nil)

您可以在此处查看 Apple 针对此更改的 API 差异。