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Android GCM Push Notification

, 6 Aug 2012 CPOL
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Android GCM Push Notification

Introduction

In this tip, I will try to explain how we can integrate a push notification service for Android using ASP.NET and C#. We all know that mobile applications are booming the market trend. Some custom mobile applications use the push notification service to give updates to application users. Here I will explain how we can use Google’s GCM push notification service.

Using the Code 

Class file "AndroidGCMPushNotification.cs":

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Net;
using System.Text;
using System.IO;
using System.Security.Cryptography.X509Certificates;
using System.Net.Security;
using System.Collections.Specialized;

public class AndroidGCMPushNotification
{
	public AndroidGCMPushNotification()
	{
		//
		// TODO: Add constructor logic here
		//
	}
    public string SendNotification(string deviceId, string message)
    {
        string GoogleAppID = "google application id";        
        var SENDER_ID = "9999999999";
        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=" + 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;
    }
}

You can call SendNotification function by passing device Id and Message.

AndroidGCMPushNotification apnGCM = new AndroidGCMPushNotification();

string strResponse =
apnGCM.SendNotification("17BA0791499DB908433B80F37C5FBC89B870084B",
"Test Push Notification message ");

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Mukund Thakker
Technical Lead
India India
Project Lead
MCTS - .NET Framework 4.0, Web Applications

Blog : http://thakkermukund.wordpress.com
Twitter@thakkermukund

Don't code today, what you can't debug tomorrow!
Everything makes sense in someone's mind

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Comments and Discussions

 
QuestionHow to send Images in notification Pin
Member 1158380322-Jul-16 3:16
memberMember 1158380322-Jul-16 3:16 
QuestionLine of Code and googleappID Pin
Member 121249087-Jun-16 23:20
memberMember 121249087-Jun-16 23:20 
QuestionWhere do I find the values that I need to insert? Pin
LorenzKaiser29-Mar-16 22:47
memberLorenzKaiser29-Mar-16 22:47 
AnswerRe: Where do I find the values that I need to insert? Pin
Gayan Buddhika31-May-16 15:56
memberGayan Buddhika31-May-16 15:56 
QuestionWant to send push notification to bulk devices Pin
pdsweetpd22815-Mar-16 1:53
memberpdsweetpd22815-Mar-16 1:53 
QuestionStill Getting 401 Unauthorized Pin
Azurath3-Jan-16 20:09
memberAzurath3-Jan-16 20:09 
Generalworking fine for me Pin
prashantbathani11-Dec-15 2:38
memberprashantbathani11-Dec-15 2:38 
QuestionGetting error SenderId MisMatched Pin
Member 1035665225-May-15 18:59
memberMember 1035665225-May-15 18:59 
GeneralPlagiarism alert Pin
Sriram Sakthivel26-Mar-15 2:53
memberSriram Sakthivel26-Mar-15 2:53 
GeneralRe: Plagiarism alert Pin
Mukund Thakker26-Mar-15 19:14
professionalMukund Thakker26-Mar-15 19:14 
Questionsending a message to multiple registration_id at a time Pin
mannmadhan26-Feb-15 2:18
membermannmadhan26-Feb-15 2:18 
QuestionGetting also MissingRegistration Pin
Member 953115620-Jan-15 21:54
memberMember 953115620-Jan-15 21:54 
AnswerRe: Getting also MissingRegistration Pin
Mukund Thakker22-Jan-15 1:02
professionalMukund Thakker22-Jan-15 1:02 
SuggestionNo need to "SENDER_ID" Pin
Bebosh9-Dec-14 3:00
memberBebosh9-Dec-14 3:00 
GeneralRe: No need to "SENDER_ID" Pin
Member 1080461018-Apr-16 3:13
memberMember 1080461018-Apr-16 3:13 
QuestionCan we send push notification to bulk mobiles device tokens and get status of each mobile device token? Pin
Member 101345284-Dec-14 18:26
memberMember 101345284-Dec-14 18:26 
GeneralExcellent Work Pin
Rungta Atul2-Dec-14 9:13
memberRungta Atul2-Dec-14 9:13 
Question401 Error Pin
tundrov26-Sep-14 4:38
membertundrov26-Sep-14 4:38 
QuestionERROR Pin
Prashant77220-Aug-14 20:12
memberPrashant77220-Aug-14 20:12 
QuestionID's mess Pin
leos7930-Jun-14 20:20
memberleos7930-Jun-14 20:20 
AnswerRe: ID's mess Pin
leos7930-Jun-14 21:13
memberleos7930-Jun-14 21:13 
QuestionWebException Pin
nugayem19-Jun-14 5:11
membernugayem19-Jun-14 5:11 
AnswerRe: WebException Pin
nugayem19-Jun-14 21:47
membernugayem19-Jun-14 21:47 
QuestionError=MissingRegistration Pin
Durul CAMLI18-Jun-14 21:31
memberDurul CAMLI18-Jun-14 21:31 
QuestionException Pin
Member 107187335-Jun-14 3:13
memberMember 107187335-Jun-14 3:13 
AnswerRe: Exception Pin
Mukund Thakker5-Jun-14 19:44
professionalMukund Thakker5-Jun-14 19:44 
Question"&registration_id" missing in code example Pin
Loupias24-Apr-14 3:40
memberLoupias24-Apr-14 3:40 
QuestionSchedule Push Notifications Pin
nano2k25-Sep-13 11:05
membernano2k25-Sep-13 11:05 
Questionhow to get deviceId Pin
ashish.shedge26-Aug-13 19:54
memberashish.shedge26-Aug-13 19:54 
QuestionError=MissingRegistration Pin
Member 780420812-Aug-13 23:01
memberMember 780420812-Aug-13 23:01 
AnswerRe: Error=MissingRegistration Pin
Mukund Thakker19-Aug-13 0:18
memberMukund Thakker19-Aug-13 0:18 
GeneralRe: Error=MissingRegistration Pin
Gunjan Dave10-Feb-14 1:47
memberGunjan Dave10-Feb-14 1:47 
GeneralRe: Error=MissingRegistration Pin
Mukund Thakker10-Feb-14 18:18
professionalMukund Thakker10-Feb-14 18:18 
GeneralRe: Error=MissingRegistration Pin
Member 1096283021-Jul-14 23:31
memberMember 1096283021-Jul-14 23:31 
Questionthanks Pin
Almostafa Said Elsisy23-May-13 1:27
memberAlmostafa Said Elsisy23-May-13 1:27 
QuestionMissingRegistrattion Pin
Member 940212010-May-13 2:55
memberMember 940212010-May-13 2:55 
QuestionNull Messages are sending Pin
RAMESHVELAYUDHAN1-Apr-13 19:18
memberRAMESHVELAYUDHAN1-Apr-13 19:18 
AnswerRe: Null Messages are sending Pin
Member 102519494-Sep-13 21:18
memberMember 102519494-Sep-13 21:18 
GeneralRe: Null Messages are sending Pin
RAMESHVELAYUDHAN8-Oct-13 18:37
memberRAMESHVELAYUDHAN8-Oct-13 18:37 
GeneralRe: Null Messages are sending Pin
Mukund Thakker8-Oct-13 18:51
memberMukund Thakker8-Oct-13 18:51 
Bugerror occurred while processing the request to user device Pin
kareemgamal10-Sep-12 3:26
memberkareemgamal10-Sep-12 3:26 
GeneralRe: error occurred while processing the request to user device Pin
Hugo Saraiva28-Feb-13 8:20
memberHugo Saraiva28-Feb-13 8:20 
QuestionAn error occurred while processing your request. Pin
kareemgamal10-Sep-12 3:25
memberkareemgamal10-Sep-12 3:25 
AnswerRe: An error occurred while processing your request. Pin
Hugo Saraiva28-Feb-13 8:20
memberHugo Saraiva28-Feb-13 8:20 
GeneralRe: An error occurred while processing your request. Pin
RAMESHVELAYUDHAN1-Apr-13 19:14
memberRAMESHVELAYUDHAN1-Apr-13 19:14 
GeneralRe: An error occurred while processing your request. Pin
Almostafa Said Elsisy22-May-13 9:22
memberAlmostafa Said Elsisy22-May-13 9:22 

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