解密通知数据并在iOS -Flutter应用中使用数据

Question

我正在Flutter应用程序中实施通知并检查iOS。方案是当用户在iOS中收到通知时，我想加密该数据以用于进一步的功能实现。这是我在appdelegate文件中

override func application(_ application: UIApplication,
                 didReceiveRemoteNotification userInfo: [AnyHashable : Any],
                 fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
    

    self.flutterMethodChannelLocalNotification.invokeMethod("localnotification", arguments: userInfo["data"] ?? "")// output: "some-value"
    let data = userInfo["data"] as? [String:Any]
    let param : [String:Any] = [KeyCenter.kUserId: data?[KeyCenter.kNotificationForUserId] ?? "" ,
                                KeyCenter.kGroupId: data?[KeyCenter.kGroupId] ?? "",
                                KeyCenter.kChatType: data?[KeyCenter.kChatType] ?? ""]
    print("Param data = \(param)")
    viewModel = ViewModel()
    viewModel.doubleTickCallApi(params: param, completion:{ (sucsses, message) in
        if sucsses{

        }else{
            print(message ?? "Unexpected")
        }
        completionHandler(.newData)
    })
    // Inform the system after the background operation is completed.
}

写入param时写的功能，它将是param data = [“ userId”：“”，“”，“ chattype”：“ “，” groupId“：”]。如何处理可选的userInfo [“ data”]在这里值？

Answer 1

解决方案是我必须在JSON中解析通知数据，然后使用它

let data = userInfo[AnyHashable("data")] as? String
let jsonData = data?.data(using: .utf8)!
let json = try! JSONSerialization.jsonObject(with: jsonData!, options: .allowFragments) as! NSDictionary

 let param : [String:Any] = [KeyCenter.kUserId: json[KeyCenter.kNotificationForUserId] ?? "" ,
                                    KeyCenter.kGroupId: json[KeyCenter.kGroupId] ?? "",
                                    KeyCenter.kChatType: json[KeyCenter.kChatType] ?? ""]