解析来自苹果推送通知的数据

Question

我有推送通知通过Firebase发送，当用户执行操作时，有一个php脚本向关联的FCM令牌发送推送。正在接收推送通知，但我正在尝试从"gcm.notification.payload"键获取信息。我尝试将userInfo转换为字典，NSDictionary，[String：Any]，JSON，但没有任何效果。当我尝试得到有效负载["类型"].string时，值为零。这是我最接近能够从有效负载字典中获取某些内容的方法，其中通知是收到的 UNNotization：

let userInfo = notification.request.content.userInfo

let json = JSON(notification.request.content.userInfo)
guard let gcmNotificationPayload = json["gcm.notification.payload"].string else { return }
let payload = JSON(gcmNotificationPayload)
print("json (json)")
print("payload (payload)")
print("(notification.request.content.userInfo)")

控制台输出：

  json {
      "gcm.message_id" : "0:1523811750249807%3990eb5d3990eb5d",
      "aps" : {
        "sound" : "default",
        "badge" : 1,
        "alert" : {
          "body" : "Tap to Open Herds List",
          "title" : "test4 test has added you to a herd!"
        }
      },
      "gcm.notification.payload" : "{"image":"https:\/\/www.test.com\/images\/users\/417\/5acd085c97c3a.jpg","type":"6","title":"test4 test has added you to a herd!","message":"Tap to Open Herds List"}"
    }
    payload {"image":"https://www.test.com/images/users/417/5acd085c97c3a.jpg","type":"6","title":"test4 test has added you to a herd!","message":"Tap to Open Herds List"}
    [AnyHashable("gcm.message_id"): 0:1523811750249807%3990eb5d3990eb5d, AnyHashable("aps"): {
        alert =     {
            body = "Tap to Open Herds List";
            title = "test4 test has added you to a herd!";
        };
        badge = 1;
        sound = default;
    }, AnyHashable("gcm.notification.payload"): {"image":"https://www.test.com/images/users/417/5acd085c97c3a.jpg","type":"6","title":"test4 test has added you to a herd!","message":"Tap to Open Herds List"}]

Answer 1

将 let payload 行更改为 this 解决了这个问题，这是使用 SwiftyJSON 作为记录：

let payload = JSON.init(parseJSON: gcmNotificationPayload)