如何在aNotification.userInfo上访问macOS字典

Question

当用户单击其MAC上的通知警报消息时，当我的应用程序被打开时，我正在尝试获取警报信息的详细信息。

当应用程序被打开时，我没有问题得到警报。当应用程序已经打开时，下面的委托可以正常工作。

func application(_ application: NSApplication,
                          didReceiveRemoteNotification userInfo: [String : Any])

但是，当应用程序通过单击od the Alert通知打开时，我必须从

func applicationDidFinishLaunching(_ aNotification: Notification)

无法检索此函数中的警报userInfo。

let mydictionary = aNotification.userInfo
let mydesc = mydictionary!.description
os_log("aNotification.userInfon= %{public}@", log: osLog, mydesc)

来自os_log的输出，我可以在描述中看到警告消息。

aNotification.userInfon= [AnyHashable("NSApplicationLaunchIsDefaultLaunchKey"): 0, AnyHashable("NSApplicationLaunchUserNotificationKey"): <UNNotificationResponse: 0x600003ac1480; actionIdentifier: com.apple.UNNotificationDefaultActionIdentifier, notification: <UNNotification: 0x600003ac1580; date: 2019-05-08 18:26:59 +0000, request: <UNNotificationRequest: 0x6000034cd560; identifier: E6D76BF3-6643-4627-BF38-3B11B5C3F0B3, content: <UNNotificationContent: 0x600000fe0780; title: (null), subtitle: (null), body: (14) - iPhone - Tom Owen, summaryArgument: , summaryArgumentCount: 0, categoryIdentifier: , launchImageName: , threadIdentifier: , attachments: ( ), badge: 0, sound: <UNNotificationSound: 0x600001ee92c0>,, trigger: <UNPushNotificationTrigger: 0x6000038fa780; contentAvailable: NO, mutableContent: NO>>>>]

我尝试过许多方法来访问“字典”，以下是一种方法。

if let aps = aNotification.userInfo!["aps"] as? NSDictionary {
        os_log(" aNotification.userInfo ok", log: osLog)
        if let alert = aps["alert"] as? NSDictionary {
            os_log("alert ok", log: osLog)
            if let alertMessage = alert["body"] as? String {
                os_log("body ok", log: osLog)
                message = alertMessage
            }
        }
    } else {
        os_log("no aNotification.userInfo!", log: osLog)
    }

然而，我总是听到“没有aNotification.userInfo!”

我应该如何访问"body：(14) - iPhone -Tom欧文“( userInfo )

Answer 1

请仔细看看日志。您必须使用键launchUserNotificationUserInfoKey获取用户通知。该键的值是一个UNNotificationResponse实例。

你得到的body与

func applicationDidFinishLaunching(_ notification: Notification)
    if let response = notification.userInfo?[NSApplication.launchUserNotificationUserInfoKey] as? UNNotificationResponse {
       let content = response.notification.request.content
       let body = content.body
       message = body
    }
}

然而，didReceiveRemoteNotification传递传统的userInfo字典。

func application(_ application: NSApplication, didReceiveRemoteNotification userInfo: [String : Any]) {
    if let aps = userInfo?["aps"] as? [String:Any] { // please use Swift native types
        os_log(" aNotification.userInfo ok", log: osLog)
        if let alert = aps["alert"] as? [String:Any] {
            os_log("alert ok", log: osLog)
            if let alertMessage = alert["body"] as? String {
                os_log("body ok", log: osLog)
                message = alertMessage
            }
        }
    } else {
        os_log("no aNotification.userInfo!", log: osLog)
    }
}