GCM使用JSON发送到多个RegistrationIDs：没有通知到达 [英] GCM Using JSON to send to multiple RegistrationIDs : No notification arrives

问题描述

我使用的是谷歌Android云信息将通知发送到设备，用C＃.NET。我得到的API密钥，RegistrationID和senderID（那么首先方法没有工作没有什么错GCM的配置）。

I'm using Android Google Cloud Messaging to send notifications to a device, with c#.net. I got the API Key, RegistrationID and senderID ( Well first method worked no there's nothing wrong with the configuration of GCM).

下面就是我想要将消息发送到仅有1 registrationID第一种方法（检查POSTDATA，我没有使用JSON）：

Here's the first method where I want to send the message to just 1 registrationID(check postData, i'm not using Json):

    public void SendPushNotification(string regID, string message)
 {


     {
         string GoogleAppID = "APIKey";
         var SENDER_ID = "SenderID";
         var value = message;
         WebRequest tRequest;
         tRequest = WebRequest.Create("https://android.googleapis.com/gcm/send");
         tRequest.Method = "post";
         tRequest.ContentType = " application/x-www-form-urlencoded;charset=UTF-8";
         tRequest.Headers.Add(string.Format("Authorization: key={0}", GoogleAppID));

         tRequest.Headers.Add(string.Format("Sender: id={0}", SENDER_ID));

         string postData = "collapse_key=score_update&time_to_live=108&delay_while_idle=1&data.message=" + value + "&data.time=" + System.DateTime.Now.ToString() + "&registration_id=" + regID + "";
         Byte[] byteArray = Encoding.UTF8.GetBytes(postData);
         tRequest.ContentLength = byteArray.Length;

         Stream dataStream = tRequest.GetRequestStream();
         dataStream.Write(byteArray, 0, byteArray.Length);
         dataStream.Close();

         WebResponse tResponse = tRequest.GetResponse();

         dataStream = tResponse.GetResponseStream();

         StreamReader tReader = new StreamReader(dataStream);

         String sResponseFromServer = tReader.ReadToEnd();

         HttpWebResponse httpResponse = (HttpWebResponse)tResponse;
         string statusCode = httpResponse.StatusCode.ToString();

         tReader.Close();
         dataStream.Close();
         tResponse.Close();
     }
        catch {
            throw new WebFaultException<string>("Error", HttpStatusCode.ServiceUnavailable);
        }

所以调用它时，设备成功接收消息。

So when calling it, the device successfully receives the message.

下面是我的第二个方法，在这里我使用JSON格式发送到多个ID：
（注意该过程不采取registrationID作为一个参数，因为我把它添加到我的code申报名单）

Here's my second method, where I use Json format to send to multiple IDs: (Note that the procedure doesn't take registrationID as a parameter because I added it to the list i declared in the code)

    public void SendPushNotification(string message)
 {

     string stringregIds = null;
     List<string> regIDs = new List<string>();
     //Here I add the registrationID that I used in Method #1 to regIDs
     //Then I use 
     stringregIds = string.Join("\",\"", regIDs);
     //To Join the values (if ever there are more than 1) with quotes and commas for the Json format below



     try
     {
         string GoogleAppID = "APIKey";
         var SENDER_ID = "SenderID";
         var value = message;
         WebRequest tRequest;
         tRequest = WebRequest.Create("https://android.googleapis.com/gcm/send");
         tRequest.Method = "post";
         tRequest.ContentType = " application/x-www-form-urlencoded;charset=UTF-8";
         tRequest.Headers.Add(string.Format("Authorization: key={0}", GoogleAppID));

         tRequest.Headers.Add(string.Format("Sender: id={0}", SENDER_ID));

         string postData = "{\"collapse_key\":\"score_update\",\"time_to_live\":108,\"delay_while_idle\":true,\"data\": { \"message\" : "+"\""+value+"\",\"time\": "+"\""+System.DateTime.Now.ToString()+"\"},\"registration_ids\":[\""+stringregIds+"\"]}";

         Byte[] byteArray = Encoding.UTF8.GetBytes(postData);
         tRequest.ContentLength = byteArray.Length;

         Stream dataStream = tRequest.GetRequestStream();
         dataStream.Write(byteArray, 0, byteArray.Length);
         dataStream.Close();

         WebResponse tResponse = tRequest.GetResponse();

         dataStream = tResponse.GetResponseStream();

         StreamReader tReader = new StreamReader(dataStream);

         String sResponseFromServer = tReader.ReadToEnd();

         HttpWebResponse httpResponse = (HttpWebResponse)tResponse;
         string statusCode = httpResponse.StatusCode.ToString();

         tReader.Close();
         dataStream.Close();
         tResponse.Close();
     }
        catch {
            throw new WebFaultException<string>("Error", HttpStatusCode.ServiceUnavailable);
        }

的方法没有给予任何错误或任何东西，但通知不在设备到达。 （我console.writelined POSTDATA和它的 http://developer.android.com /google/gcm/http.html
所以，我真的不知道该怎么解决，这将是非常容易在同一时间向用户发送通知不仅仅是发送1到每个用户每X秒。

The Method doesn't give any errors or anything but the notification doesn't arrive in the device. (I console.writelined postData and it's the same format of http://developer.android.com/google/gcm/http.html So I don't really know what to fix, it would be really easier to send notifications to users at the same time not just send 1 to each User every X seconds.

感谢。

推荐答案

修改

Request.ContentType = " application/x-www-form-urlencoded;charset=UTF-8";

到

Request.ContentType = "application/json";

请问回答这个问题。

Does answer the question.

他提供，他已经明确地暗示恰恰相反JSON数据。

He is providing JSON data where he has explicitly implied quite the opposite.

HTTP头必须包含以下标题：

The HTTP header must contain the following headers:

的Content-Type：对JSON应用程序/ JSON的;
  应用程序/ x-WWW的形式urlen codeD;字符集= UTF-8的纯文本

Content-Type: application/json for JSON; application/x-www-form-urlencoded;charset=UTF-8 for plain text.

请参阅： https://developer.android.com/google/gcm/http。 HTML

这篇关于GCM使用JSON发送到多个RegistrationIDs：没有通知到达的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！