在Swift中收到通知时获取时间

UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { (_, _) in
    // 处理授权结果
}
UIApplication.shared.registerForRemoteNotifications()

NotificationCenter.default.addObserver(self, selector: #selector(receiveNotification(_:)), name: NSNotification.Name(rawValue: "YourNotificationIdentifier"), object: nil)

@objc func receiveNotification(_ notification: NSNotification) {
    if let userInfo = notification.userInfo {
        if let message = userInfo["message"] as? String,
           let timestamp = userInfo["timestamp"] as? TimeInterval {
            let date = Date(timeIntervalSince1970: timestamp)
            let dateFormatter = DateFormatter()
            dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
            let formattedDate = dateFormatter.string(from: date)
            print("Received notification: \(message) at \(formattedDate)")
        }
    }
}