How to send Android push notifications via GCM on C# .Net

Question

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

Answer 1

There is package PushSharp. Allows to communicate with almost every popular notification api.

Example code:

// Configuration
var config = new GcmConfiguration ("GCM-SENDER-ID", "AUTH-TOKEN", null);

// Create a new broker
var gcmBroker = new GcmServiceBroker (config);

// Wire up events
gcmBroker.OnNotificationFailed += (notification, aggregateEx) => {

    aggregateEx.Handle (ex => {

        // See what kind of exception it was to further diagnose
        if (ex is GcmNotificationException) {
            var notificationException = (GcmNotificationException)ex;

            // Deal with the failed notification
            var gcmNotification = notificationException.Notification;
            var description = notificationException.Description;

            Console.WriteLine ($"GCM Notification Failed: ID={gcmNotification.MessageId}, Desc={description}");
        } else if (ex is GcmMulticastResultException) {
            var multicastException = (GcmMulticastResultException)ex;

            foreach (var succeededNotification in multicastException.Succeeded) {
                Console.WriteLine ($"GCM Notification Failed: ID={succeededNotification.MessageId}");
            }

            foreach (var failedKvp in multicastException.Failed) {
                var n = failedKvp.Key;
                var e = failedKvp.Value;

                Console.WriteLine ($"GCM Notification Failed: ID={n.MessageId}, Desc={e.Description}");
            }

        } else if (ex is DeviceSubscriptionExpiredException) {
            var expiredException = (DeviceSubscriptionExpiredException)ex;

            var oldId = expiredException.OldSubscriptionId;
            var newId = expiredException.NewSubscriptionId;

            Console.WriteLine ($"Device RegistrationId Expired: {oldId}");

            if (!string.IsNullOrWhitespace (newId)) {
                // If this value isn't null, our subscription changed and we should update our database
                Console.WriteLine ($"Device RegistrationId Changed To: {newId}");
            }
        } else if (ex is RetryAfterException) {
            var retryException = (RetryAfterException)ex;
            // If you get rate limited, you should stop sending messages until after the RetryAfterUtc date
            Console.WriteLine ($"GCM Rate Limited, don't send more until after {retryException.RetryAfterUtc}");
        } else {
            Console.WriteLine ("GCM Notification Failed for some unknown reason");
        }

        // Mark it as handled
        return true;
    });
};

gcmBroker.OnNotificationSucceeded += (notification) => {
    Console.WriteLine ("GCM Notification Sent!");
};

// Start the broker
gcmBroker.Start ();

foreach (var regId in MY_REGISTRATION_IDS) {
    // Queue a notification to send
    gcmBroker.QueueNotification (new GcmNotification {
        RegistrationIds = new List { 
            regId
        },
        Data = JObject.Parse ("{ \"somekey\" : \"somevalue\" }")
    });
}

// Stop the broker, wait for it to finish   
// This isn't done after every message, but after you're
// done with the broker
gcmBroker.Stop ();