好吧,我正在尝试登录控制台输出按下的键。我只是无法理解可可的结构,无论是 Obj-c 还是 swift。我不是这两种语言的大师,但是......这是我的代码:
import Cocoa
import Foundation
import AppKit
var loop = true
var idRegisterdEvent: AnyObject? = nil
func handlerEvent(myEvent: (NSEvent!)) -> Void {
print(myEvent.keyCode)
}
while loop {
idRegisterdEvent = NSEvent.addGlobalMonitorForEventsMatchingMask(NSEventMask.KeyDownMask, handler: handlerEvent)
}
我知道一切都错了,是的……但是,伙计,这些事件,我无法理解它们是如何运作的。
在 google 上花了几个小时后,我最终阅读了一些 github 资源。事实证明有人已经弄清楚了 https://github.com/AntiHaus/SwiftLog/blob/8d5f6a10ff71920daf33522ec6547ecd2d5bcbc7/SwiftLog/main.swift.
基本上你需要创建一个NSApplicationDelegate
,这使您的应用程序能够侦听系统事件。
下图显示了最低限度的代码 needed(swift2
):
func acquirePrivileges() -> Bool {
let accessEnabled = AXIsProcessTrustedWithOptions(
[kAXTrustedCheckOptionPrompt.takeUnretainedValue() as String: true])
if accessEnabled != true {
print("You need to enable the keylogger in the System Preferences")
}
return accessEnabled == true
}
class ApplicationDelegate: NSObject, NSApplicationDelegate {
func applicationDidFinishLaunching(notification: NSNotification?) {
acquirePrivileges()
// keyboard listeners
NSEvent.addGlobalMonitorForEventsMatchingMask(
NSEventMask.KeyDownMask, handler: {(event: NSEvent) in
print(event)
})
}
}
// preparing main loop
let application = NSApplication.sharedApplication()
let applicationDelegate = MyObserver()
application.delegate = applicationDelegate
application.activateIgnoringOtherApps(true)
application.run()
如果您只是对捕捉感兴趣不可访问性事件(例如:NSWorkspaceDidActivateApplicationNotification
)您可以使用更少的代码行,因为您只需要NSRunLoop.mainRunLoop().run()
。自从我看到你的之后我才添加了这个例子while true
事件循环,它永远不会让你监听任何系统事件,因为它阻塞了主线程。
class MyObserver: NSObject
{
override init() {
super.init()
// app listeners
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "SwitchedApp:", name: NSWorkspaceDidActivateApplicationNotification, object: nil)
}
func SwitchedApp(notification: NSNotification!)
{
print(notification)
}
}
let observer = MyObserver()
// simply to keep the command line tool alive - as a daemon process
NSRunLoop.mainRunLoop().run()
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