Xamarin - GCM OnMessageReceived method not called - xamarin

Question

I'm able to get the registration token id from gcm but my problem is that when i send the message to the client app i don't receive it on Xamarin Android Player. I followed the example on this site : https://developer.xamarin.com/guides/cross-platform/application_fundamentals/notifications/android/remote_notifications_in_android/
Here is my code :
MainActivity.cs
[Activity(Label = "ResApp", MainLauncher = true, Icon = "#drawable/icon")]
public class MainActivity : Activity
{
TextView msgText;
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
msgText = FindViewById<TextView>(Resource.Id.msgText);
if (IsPlayServicesAvailable()) //this check if google play is installed
{
var intent = new Intent(this, typeof(RegistrationIntentService));
StartService(intent);
}
}
public bool IsPlayServicesAvailable()
{
int resultCode = GoogleApiAvailability.Instance.IsGooglePlayServicesAvailable(this);
if (resultCode != ConnectionResult.Success)
{
if (GoogleApiAvailability.Instance.IsUserResolvableError(resultCode))
msgText.Text = GoogleApiAvailability.Instance.GetErrorString(resultCode);
else
{
msgText.Text = "Sorry, this device is not supported";
Finish();
}
return false;
}
else
{
msgText.Text = "Google Play Services is available.";
return true;
}
}
}
RegistrationIntentService.cs
[Service(Exported = false)]
class RegistrationIntentService : IntentService
{
static object locker = new object();
public RegistrationIntentService() : base("RegistrationIntentService") { }
protected override void OnHandleIntent(Intent intent)
{
try
{
Log.Info("RegistrationIntentService", "Calling InstanceID.GetToken");
lock (locker)
{
var SenderID = "xxxxx";
var instanceID = InstanceID.GetInstance(this);
var token = instanceID.GetToken(SenderID, GoogleCloudMessaging.InstanceIdScope, null);
Log.Info("RegistrationIntentService", "GCM Registration Token: " + token);
SendRegistrationToAppServer(token);
Subscribe(token);
}
}
catch (Exception e)
{
Log.Debug("RegistrationIntentService", "Failed to get a registration token");
return;
}
}
void SendRegistrationToAppServer(string token)
{
// Add custom implementation here as needed.
}
void Subscribe(string token)
{
var pubSub = GcmPubSub.GetInstance(this);
pubSub.Subscribe(token, "/topics/global", null);
}
}
InstanceIdListenerService.cs
[Service(Exported = false), IntentFilter(new[] { "com.google.android.gms.iid.InstanceID" })]
class MyInstanceIDListenerService : InstanceIDListenerService
{
public override void OnTokenRefresh()
{
var intent = new Intent(this, typeof(RegistrationIntentService));
StartService(intent);
}
}
GcmListenerService.cs
[Service(Exported = false), IntentFilter(new[] { "com.google.android.c2dm.intent.RECEIVE" })]
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);
SendNotification(message);
}
void SendNotification(string message)
{
var intent = new Intent(this, typeof(MainActivity));
intent.AddFlags(ActivityFlags.ClearTop);
var pendingIntent = PendingIntent.GetActivity(this, 0, intent, PendingIntentFlags.OneShot);
var notificationBuilder = new Notification.Builder(this)
//.SetSmallIcon(Resource.Drawable.ic_stat_ic_notification)
.SetContentTitle("GCM Message")
.SetContentText(message)
.SetAutoCancel(true)
.SetContentIntent(pendingIntent);
var notificationManager = (NotificationManager)GetSystemService(Context.NotificationService);
notificationManager.Notify(0, notificationBuilder.Build());
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="co.za.resapp" android:versionCode="1" android:versionName="1.0" android:installLocation="auto">
<uses-sdk android:minSdkVersion="11" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application android:label="ResApp"></application>
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="co.za.resapp.permission.C2D_MESSAGE" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.GET_ACCOUNTS_PRIVILEGED" />
<permission android:name="co.za.resapp.permission.C2D_MESSAGE" android:protectionLevel="signature" />
<application android:label="CodeLog">
<receiver android:name="com.google.android.gms.gcm.GcmReceiver" android:exported="true" android:permission="com.google.android.c2dm.permission.SEND">
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<category android:name="co.za.resapp" />
</intent-filter>
</receiver>
</application>
</manifest>
Send Message from Server
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("https://gcm-http.googleapis.com/gcm/send");
try
{
using (var client = new HttpClient())
{
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.TryAddWithoutValidation("Authorization", "key=" + API_KEY);
Task.WaitAll(client.PostAsync(url,
new StringContent(jGcmData.ToString(), Encoding.Default, "application/json"))
.ContinueWith(response =>
{
Console.WriteLine(response);
Console.WriteLine("Message sent: check the client device notification tray.");
}));
}
}
catch (Exception ex)
{
Console.WriteLine("Unable to send GCM message:");
Console.Error.WriteLine(ex.StackTrace);
}

Answer 1

It seems like there was a problem in the manifest file. I pasted this new code in the manifest code and the program worked :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="co.za.resapp" android:versionCode="1" android:versionName="1.0" android:installLocation="auto">
<uses-sdk android:minSdkVersion="11" />
<application android:label="GCM_ANDROID">
<receiver android:name="com.google.android.gms.gcm.GcmReceiver" android:exported="true" android:permission="com.google.android.c2dm.permission.SEND">
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<category android:name="co.za.resapp" />
</intent-filter>
</receiver>
</application>
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="co.za.resapp.permission.C2D_MESSAGE" />
</manifest>