它与电源管理无关。实际上，您需要在应用程序中运行脚本。
要做到这一点，最简单的方法是首先禁用应用程序沙箱功能。
接下来转到您的应用程序info.plist并添加NSAppleEventsUsageDescription密钥和描述，类似于"This app needs your permission to put the display to sleep."。
现在，您只需要执行一个Apple脚本，告诉应用程序系统事件休眠。"tell application \"System Events\" to sleep"：
创建一个方法来执行该脚本：

func startScreenSleep() {
    let script = "tell application \"System Events\" to sleep"
    guard let appleScript = NSAppleScript(source: script) else { return }
    var error: NSDictionary?
    appleScript.executeAndReturnError(&error)
    if let error = error {
        print(error[NSAppleScript.errorAppName] as! String)
        print(error[NSAppleScript.errorBriefMessage] as! String)
        print(error[NSAppleScript.errorMessage] as! String)
        print(error[NSAppleScript.errorNumber] as! NSNumber)
        print(error[NSAppleScript.errorRange] as! NSRange)
    }
}

然后从ViewController的viewDidLoad方法调用它：

override func viewDidLoad() {
    super.viewDidLoad()
    startScreenSleep()
}

只需运行bash脚本“pmset sleepnow”

@IBAction func sleepAction(_ sender: Any) {
        do {
            try safeShell("pmset sleepnow")
        } catch {
            print("\(error)")
        }
    }
    
    @discardableResult 
    func safeShell(_ command: String) throws -> String {
        let task = Process()
        let pipe = Pipe()
        
        task.standardOutput = pipe
        task.standardError = pipe
        task.arguments = ["-c", command]
        task.executableURL = URL(fileURLWithPath: "/bin/bash")
        task.standardInput = nil

        try task.run()
        
        let data = pipe.fileHandleForReading.readDataToEndOfFile()
        let output = String(data: data, encoding: .utf8)!
        
        return output
    }