sangram parmar sangram parmar - 1 year ago 88
C# Question

Not calling method OnMessageReceived in xamarin

I am implementing remote notification on android using xamarin.

I am doing POC using Walkthrough - Using Remote Notifications in Xamarin.Android

I am not getting notification on mobile, after registering mobile and send notification through sender using GCM.

Is there any mistake in code? or Can I track my notification to get detail why it is not come in mobile?


[Service(Exported = false), IntentFilter(new[] { "" })]
public class MyGcmListenerService : GcmListenerService
public override void OnMessageReceived(string from, Bundle data)
var message = data.GetString("message");
Log.Debug("MyGcmListenerService", "From: " + from);
Log.Debug("MyGcmListenerService", "Message: " + message);


<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="" package="com.yourcompany.LeaveApplication" android:installLocation="auto" android:versionCode="1" android:versionName="1.0">
<uses-sdk android:minSdkVersion="15" />

<uses-permission android:name="" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.yourcompany.LeaveApplication.permission.C2D_MESSAGE" />
<permission android:name="com.yourcompany.LeaveApplication.permission.C2D_MESSAGE" android:protectionLevel="signature" />
<application android:label="XamarinLeaveApp" >
<receiver android:name="" android:exported="true" android:permission="">
<action android:name="" />
<action android:name="" />
<category android:name="com.yourcompany.LeaveApplication" />


Message Sender's code

var jGcmData = new JObject();
var jData = new JObject();

jData.Add("message", MESSAGE);
jGcmData.Add("to", "/topics/global");
jGcmData.Add("data", jData);

var url = new Uri("");
using (var client = new HttpClient())
new MediaTypeWithQualityHeaderValue("application/json"));

"Authorization", "key=" + API_KEY);

new StringContent(jGcmData.ToString(), Encoding.Default, "application/json"))
.ContinueWith(response =>
var response1 = response;
// Console.WriteLine(response);
//Console.WriteLine("Message sent: check the client device notification tray.");


[Service(Exported = false)]
class RegistrationIntentService : IntentService
static object locker = new object();

public RegistrationIntentService() : base("RegistrationIntentService") { }

protected override void OnHandleIntent(Intent intent)
Log.Info("RegistrationIntentService", "Calling InstanceID.GetToken");
lock (locker)
var instanceID = InstanceID.GetInstance(Application.Context);

var token = instanceID.GetToken(
"<project number", GoogleCloudMessaging.InstanceIdScope, null);

Log.Info("RegistrationIntentService", "GCM Registration Token: " + token);
catch (Exception e)
Log.Debug("RegistrationIntentService", "Failed to get a registration token");

void SendRegistrationToAppServer(string token)
// Add custom implementation here as needed.

void Subscribe(string token)
var pubSub = GcmPubSub.GetInstance(Application.Context);
pubSub.Subscribe(token, "/topics/global", null);

Answer Source

in the RegistrationIntentService.cs file, you use Application.Context instead of this. It should be equivalent, but can you try?

Also, I do not see in your code the protected override void OnCreate method that registers the RegistrationIntentService intent. Didn't you paste it here or did you forget to implement it?


Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. Free Download