我正在使用 Android Google Cloud Messaging 通过 c#.net 向设备发送通知。我得到了 API 密钥、RegistrationID 和 senderID（第一种方法行得通，GCM 的配置没有问题）。
这是我只想将消息发送到 1 个注册 ID 的第一种方法（检查 postData，我没有使用 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() + "®istration_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);
}
所以在调用它的时候，设备成功接收到了消息。
这是我的第二种方法，我使用Json格式发送到多个ID：（请注意，该过程不将registrationID作为参数，因为我将其添加到我在代码中声明的列表中）
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);
}
该方法没有给出任何错误或任何东西，但通知没有到达设备。（我 console.writelined postData 和http://developer.android.com/google/gcm/http.html格式相同 所以我真的不知道要修复什么，向用户发送通知会更容易同时不只是每 X 秒向每个用户发送 1 个。
谢谢。