后端使用ASP.NET時如何在android中設置推送通知（或GCM）機制

Question

后端使用ASP.NET時如何在android中設置推送通知（或GCM）機制

我想設置一個應用程序GCM，但后端在ASP.net中，請盡可能參考完整指南。

服務器端和android端

Answer 1

為了部分回答這個問題，服務器端可以用C＃實現。 消息格式和一般方法記錄在以下鏈接中。

http://developer.android.com/google/gcm/server.html

https://developer.android.com/google/gcm/http.html

https://developers.google.com/cloud-messaging/server-ref#table1

話雖如此，實際的推送消息可以如下發送。

var iReq = WebRequest.Create("https://android.googleapis.com/gcm/send");
iReq.Method = "post";
iReq.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";
iReq.Headers.Add(String.Format("Authorization: key={0}", Key));

string iMsg;

// iMsg must be filled with the actual data to be sent
// and understood by the client

var PostData = Uri.EscapeUriString(PostData);

var byteArr = Encoding.UTF8.GetBytes(PostData);
iReq.ContentLength = byteArray.Length;

var DataStream = iReq.GetRequestStream();
DataStream.Write(byteArray, 0, byteArray.Length);
DataStream.Close();

string ServerResponse;  // will contain the response to examine
HttpStatusCode StatusCode;

using (var iRes = iReq.GetResponse())
{
    using (var iReader = new StreamReader(iRes.GetResponseStream()))
    {
        ServerResponse = iReader.ReadToEnd();
    }
    StatusCode = (iResponse as HttpWebResponse).StatusCode;
}