阅读Xamarin.iOS中的Parse.com推送负载

我想阅读iOS推送的"警报"消息

parse.com在他们的网站上有这个例子

ParsePush.ParsePushNotificationReceived += (sender, args) => {
  var payload = args.Payload;
  object objectId;
  if (payload.TryGetValue("objectId", out objectId)) {
    DisplayRichMessageWithObjectId(objectId as string);
  }
};

但是我如何从有效载荷中读取警报信息呢？

解决方案

string message = "";
try
{
    var payload = args.Payload;
        object aps;
        if (payload.TryGetValue("aps", out aps))
        {
            string payloadStr = "";
                try
                {
                    payloadStr = aps.ToString();
                }
                catch (Exception e)
                {
                }
                try
                {
                    var match = Regex.Match(payloadStr, @"alert = (.*);'n");
                        if (match.Success)
                        {
                            string alertText = match.Groups[1].Value;
                                message = alertText;
                        }
                }
                catch (Exception)
                {
                }
    }
}

ParsePush.ParsePushNotificationReceived += (sender, args) => {
  var payload = args.Payload;
  object aps;
  if (payload.TryGetValue("aps", out aps)) {
    string payloadStr = aps as string;
  }
};