swift中检测NSViewController中键盘输入的最佳策略

我想检测NSViewController中的键盘输入。 其想法是，如果用户按下某些键，然后按ENTER/RETURN，则执行多个操作

我已经检查了键控是否是一种合适的方式。但每当用户按下某个键时，我都会收到一个事件

我还考虑过使用NSTextField，将其设置为hidden并使其具有焦点。 但也许还有其他更好的解决办法

有什么想法吗

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谢谢

我终于找到了我喜欢的解决方案。 首先，它与任何隐藏的UI元素无关，而是让viewcontroller检测键盘输入

var monitor: Any?
var text = ""
override func viewDidLoad() {
    super.viewDidLoad()
    self.monitor = NSEvent.addLocalMonitorForEvents(matching: .keyDown, handler: myKeyDownEvent)
}

override func viewWillDisappear() {
    //Clean up in case your ViewController can be closed an reopened
    if let monitor = self.monitor {
        NSEvent.removeMonitor(monitor)
    }
}

// Detect each keyboard event
func myKeyDownEvent(event: NSEvent) -> NSEvent {
    // keyCode 36 is for detect RETURN/ENTER
    if event.keyCode == 36 {
       print(text)
       text = ""
    } else {
       text.append( event.characters! )
    }
    return event
}

---

我终于找到了一个我喜欢的解决方案。 首先，它与任何隐藏的UI元素无关，而是让viewcontroller检测键盘输入

var monitor: Any?
var text = ""
override func viewDidLoad() {
    super.viewDidLoad()
    self.monitor = NSEvent.addLocalMonitorForEvents(matching: .keyDown, handler: myKeyDownEvent)
}

override func viewWillDisappear() {
    //Clean up in case your ViewController can be closed an reopened
    if let monitor = self.monitor {
        NSEvent.removeMonitor(monitor)
    }
}

// Detect each keyboard event
func myKeyDownEvent(event: NSEvent) -> NSEvent {
    // keyCode 36 is for detect RETURN/ENTER
    if event.keyCode == 36 {
       print(text)
       text = ""
    } else {
       text.append( event.characters! )
    }
    return event
}