在swift OSX

Question

我正在制作一个mac应用程序，当计算机唤醒时，需要做某事才能入睡并醒来，但我无法让听众工作。我觉得我已经尝试了一切。在AppDelegate.swift中，在函数applicationDidFinishLaunching中，我得到了：

NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "sleepListener", name: NSWorkspaceWillSleepNotification, object: nil)
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "wakeUpListener", name: NSWorkspaceDidWakeNotification, object: nil)

并且在AppDelegate.swift内部，但在函数applicationDidFinishLaunching之外，我有：

func sleepListener(aNotification : NSNotification) {
    print("Sleep Listening");
}

func wakeUpListener(aNotification : NSNotification) {
    print("Wake Up Listening");
}

我尝试了很多不同的东西来解决这个问题。我试着在NSNotificationCenter.defaultCenter（）上试听，我已经尝试将选择器更改为“sleepListener：”和“wakeUpListener：”，我尝试从两个函数中删除参数，到目前为止还没有任何工作。真正有趣的是，我有两个其他听众完美地工作，“NSWorkspaceScreensDidSleepNotification”和“NSWorkspaceScreensDidWakeNotification”，通过调用它们

    NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "screenSleepListener", name: NSWorkspaceScreensDidSleepNotification, object: nil)

和

    NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "screenWakeUpListener", name: NSWorkspaceScreensDidWakeNotification, object: nil)

引用函数

func screenSleepListener() {
    print("Screen Sleep Listening");
}

func screenWakeUpListener() {
    print("Screen Wake Up Listening");
}

那么，这是我做错了吗？我应该提交错误报告吗？如果其他人可以在文件中运行此代码，让他们的显示器和他们的计算机进入睡眠状态，看看他们是否得到相同的错误，这将非常有帮助。如果有人知道世界上我做错了什么，那就更好了。

提前谢谢！

Answer 1

我看到这篇帖子是很久以前的。

从您的帖子中，我得到的印象是您以错误的顺序进行了两次排列。

    NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "sleepListener", name: NSWorkspaceWillSleepNotification, object: nil)
    NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "wakeUpListener", name: NSWorkspaceDidWakeNotification, object: nil)
func sleepListener() {
    print("Sleep Listening");
}

func wakeUpListener() {
    print("Wake Up Listening");
}

或

NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "sleepListener:", name: NSWorkspaceWillSleepNotification, object: nil)
        NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "wakeUpListener:", name: NSWorkspaceDidWakeNotification, object: nil)

func sleepListener(aNotification : NSNotification) {
    print("Sleep Listening");
}

func wakeUpListener(aNotification : NSNotification) {
    print("Wake Up Listening");
}

OR甚至更好

NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "sleepListener:", name: NSWorkspaceWillSleepNotification, object: nil)

NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "sleepListener:", name: NSWorkspaceDidWakeNotification, object: nil)

 func sleepListener(aNotification : NSNotification) {
            if aNotification.name == NSWorkspaceWillSleepNotification{
                print("Going to sleep")
            }else if aNotification.name == NSWorkspaceDidWakeNotification{
                print("Woke up")
            }else{
                print("Some other event other than the first two")
            }
        }

您添加这些观察者的位置也很重要。对我来说，他们都是应用代表，他们都工作。

希望有所帮助

Answer 2

快捷键5：

func applicationDidFinishLaunching(_ aNotification: Notification) {  
    NSWorkspace.shared.notificationCenter.addObserver(self, selector: #selector(sleepListener(_:)),  
                                                      name: NSWorkspace.willSleepNotification, object: nil)  
    NSWorkspace.shared.notificationCenter.addObserver(self, selector: #selector(sleepListener(_:)),  
                                                      name: NSWorkspace.didWakeNotification, object: nil)  
}  


@objc private func sleepListener(_ aNotification: Notification) {  
    print("listening to sleep")  
    if aNotification.name == NSWorkspace.willSleepNotification {  
        print("Going to sleep")  
    } else if aNotification.name == NSWorkspace.didWakeNotification {  
        print("Woke up")  
    } else {  
        print("Some other event other than the first two")  
    }  
}