如何检测macOS应用是否由AppleScript激活？

可以通过检查Apple事件来区分应用是被AppleScript激活还是用户手动启动的——AppleScript的activate命令会触发特定的Apple事件，以下是具体实现方案：

方案1：启动时检查启动选项 #

在应用首次启动时，通过launchOptions中的NSApplicationLaunchAppleEventKey判断是否由Apple事件触发启动：

import Cocoa

@main
class AppDelegate: NSObject, NSApplicationDelegate {
    func application(_ application: NSApplication, didFinishLaunchingWithOptions launchOptions: [NSApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
        if let appleEvent = launchOptions?[.appleEvent] as? NSAppleEventDescriptor {
            let eventClass = appleEvent.eventClass
            let eventID = appleEvent.eventID
            // 匹配AppleScript activate命令对应的事件
            if eventClass == AEEventClass(kAEMiscStandards), eventID == AEEventID(kAEActivate) {
                print("activated from AppleScript")
            } else {
                print("launched via other Apple event")
            }
        } else {
            print("user clicked or other non-Apple event method")
        }
        return true
    }
}

方案2：激活时检查当前Apple事件 #

如果应用已经在后台运行，被AppleScript激活时会触发applicationDidBecomeActive，此时可以通过NSAppleEventManager获取当前Apple事件判断来源：

import Cocoa

@main
class AppDelegate: NSObject, NSApplicationDelegate {
    func applicationDidBecomeActive(_ notification: Notification) {
        guard let event = NSAppleEventManager.shared().currentAppleEvent else {
            print("user activated or non-Apple event trigger")
            return
        }
        
        let eventClass = event.eventClass
        let eventID = event.eventID
        if eventClass == AEEventClass(kAEMiscStandards), eventID == AEEventID(kAEActivate) {
            print("activated from AppleScript")
        }
    }
}

关键说明 #

• AppleScript的activate命令对应的Apple事件类为kAEMiscStandards，事件ID为kAEActivate，匹配这两个值即可确定激活来源。
• 手动点击图标启动/激活应用时，不会生成对应的Apple事件，因此currentAppleEvent会为空，或launchOptions中不存在appleEvent键。

内容的提问来源于stack exchange，提问作者Chris