如何通过GCM派C＃.NET Android的推送通知 [英] How to send Android push notifications via GCM on C# .Net

查看：294 发布时间：2016/8/30 15:47:09 c# android google-cloud-messaging

本文介绍了如何通过GCM派C＃.NET Android的推送通知的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我是新来的所有Android GCM推送通知和本人已阅读栈职位，但无法获得直answer.I也看过的创建的Android 推送通知，以获得更好的理解GCM如何工作的。我也用了SDK提供的GCM-演示服务器和GCM-演示客户端。但是，这里有我的怀疑和我所到目前为止已经试过：

关于我已经把该链接，里面有应用注册的手机获得注册码。这是所有手机的唯一密钥，它使用相同的应用程序？

这是否注册密钥在任何情况下到期？（例如应用程序在后台运行）

假设我有注册码，我曾尝试下面的代码片段通过GCM推通知我的应用程序。这是写在C＃.NET。请让我知道是否我所提到的东西可以用下面的代码段来实现：

 私人字符串SendGCMNotification（字符串apiKey，串POSTDATA，串postDataContentType =应用/ JSON）
 {
 ServicePointManager.ServerCertificateValidationCallback + =新RemoteCertificateValidationCallback（ValidateServerCertificate）; 
 
 //邮件内容
字节[]的字节数组= Encoding.UTF8.GetBytes（POSTDATA）; 
 
 //创建请求
 HttpWebRequest的要求=（HttpWebRequest的）WebRequest.Create（https://android.googleapis.com/gcm/send）; 
 Request.Method =POST; 
 Request.KeepAlive = FALSE; 
 Request.ContentType = postDataContentType; 
 Request.Headers.Add（的String.Format（授权：键= {0}，apiKey））; 
 Request.ContentLength = byteArray.Length; 
 
流数据流= Request.GetRequestStream（）; 
 dataStream.Write（字节数组，0，byteArray.Length）; 
 dataStream.Close（）; 
 
 //发送消息
试
 {
 WebResponse的响应= Request.GetResponse（）; 
 HttpStatusCode ResponseCode =（（HttpWebResponse）响应）.StatusCode; 
如果（ResponseCode.Equals（HttpStatusCode.Unauthorized）|| ResponseCode.Equals（HttpStatusCode.Forbidden））
 {
变种文字=未经授权 - 需要新的令牌; （！ResponseCode.Equals（HttpStatusCode.OK））
} 
，否则如果
 {
变种文字=从Web服务响应不OK; 
} 
 
 StreamReader的读者=新的StreamReader（Response.GetResponseStream（））; 
串responseLine = Reader.ReadToEnd（）; 
 Reader.Close（）; 
 
返回responseLine; 
} 
赶上（例外五）
 {
} 
返回错误; 
}

有没有第一次发送推送通知，没有手机的直接方式？在我们的自定义服务器正在注册

解决方案

请参阅代码：

 公共类AndroidGCMPushNotification 
 {
公共AndroidGCMPushNotification（）
 {
 // 
 // TODO：在此处添加构造函数逻辑
 // 
} 
公共字符串sendNotification时（字符串的DeviceID，字符串消息）
 {
字符串SERVER_API_KEY =服务器API密钥 
 VAR SENDER_ID =申请号; 
 VAR值=消息; 
的WebRequest tRequest; 
 tRequest = WebRequest.Create（https://android.googleapis.com/gcm/send）; 
 tRequest.Method =邮报; 
 tRequest.ContentType =应用/的X WWW的形式了urlencoded;字符集= UTF-8; 
 tRequest.Headers.Add（的String.Format（授权：键= {0}，SERVER_API_KEY））; 
 
 tRequest.Headers.Add（的String.Format（发件人：ID = {0}，SENDER_ID））; 
 
串POSTDATA =collapse_key的= score_update&安培; time_to_live = 108&安培; delay_while_idle = 1&安培; data.message =+价值+&放大器; data.time =+ System.DateTime.Now.ToString（） +与& registration_id =+ DEVICEID +; 
 Console.WriteLine（POSTDATA）; 
字节[]的字节数组= Encoding.UTF8.GetBytes（POSTDATA）; 
 tRequest.ContentLength = byteArray.Length; 
 
流数据流= tRequest.GetRequestStream（）; 
 dataStream.Write（字节数组，0，byteArray.Length）; 
 dataStream.Close（）; 
 
 WebResponse的tResponse = tRequest.GetResponse（）; 
 
数据流= tResponse.GetResponseStream（）; 
 
 StreamReader的踏浪号=新的StreamReader（数据流）; 
 
字符串sResponseFromServer = tReader.ReadToEnd（）; 
 
 
 tReader.Close（）; 
 dataStream.Close（）; 
 tResponse.Close（）; 
返回sResponseFromServer; 
} 
}

全球化志愿服务青年链接：

HTTP：//www.codeproject。 COM /提示/ 434338 / Android的GCM-推送通知

I'm new to all Android GCM push notifications and I have read stack posts but couldn't get a straight answer.I have also read Create push notification in android to get a better understanding of how GCM works. I have also used the gcm-demo-server and gcm-demo-client provided by the SDK. However, here are my doubts and what I have tried so far:

Regarding the link I have put, the phone which has the app registers to get the registration key. Is this a unique key for all phones which uses the same app?
Does this registration key expires in any case? (E.g. App running on background)

Assuming that I have the registration key, I have tried the following code snippet to push notification via GCM to my app. This is written on c# .net. Please let me know whether what I have mentioned above can be achieved using the following code snippet:

     private string SendGCMNotification(string apiKey, string postData, string postDataContentType = "application/json")
    {
        ServicePointManager.ServerCertificateValidationCallback += new RemoteCertificateValidationCallback(ValidateServerCertificate);

        // MESSAGE CONTENT
        byte[] byteArray = Encoding.UTF8.GetBytes(postData);

        // CREATE REQUEST
        HttpWebRequest Request = (HttpWebRequest)WebRequest.Create("https://android.googleapis.com/gcm/send");
        Request.Method = "POST";
        Request.KeepAlive = false;
        Request.ContentType = postDataContentType;
        Request.Headers.Add(string.Format("Authorization: key={0}", apiKey));
        Request.ContentLength = byteArray.Length;

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

        // SEND MESSAGE
        try
        {
            WebResponse Response = Request.GetResponse();
            HttpStatusCode ResponseCode = ((HttpWebResponse)Response).StatusCode;
            if (ResponseCode.Equals(HttpStatusCode.Unauthorized) || ResponseCode.Equals(HttpStatusCode.Forbidden))
            {
                var text = "Unauthorized - need new token";
            }
            else if (!ResponseCode.Equals(HttpStatusCode.OK))
            {
                var text = "Response from web service isn't OK";
            }

            StreamReader Reader = new StreamReader(Response.GetResponseStream());
            string responseLine = Reader.ReadToEnd();
            Reader.Close();

            return responseLine;
        }
        catch (Exception e)
        {
        }
        return "error";
    }

Is there a direct way of sending push notifications without the phone first being registered in our custom server?

解决方案

Refer Code:

public class AndroidGCMPushNotification
{
    public AndroidGCMPushNotification()
    {
        //
        // TODO: Add constructor logic here
        //
    }
    public string SendNotification(string deviceId, string message)
    {
        string SERVER_API_KEY = "server api key";        
        var SENDER_ID = "application number";
        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}", SERVER_API_KEY));

        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=" + deviceId + "";
        Console.WriteLine(postData);
        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();


        tReader.Close();
        dataStream.Close();
        tResponse.Close();
        return sResponseFromServer;
    }
}

Referance Link:

http://www.codeproject.com/Tips/434338/Android-GCM-Push-Notification

这篇关于如何通过GCM派C＃.NET Android的推送通知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！

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