tutorial - notifications android




Push Notifications in Android Platform (14)

I am looking to write an app that receives pushed alerts from a server. I found a couple of methods to do this.

  1. SMS - Intercept the incoming SMS and initiate a pull from the server
  2. Poll the server periodically

Each has its own limitations. SMS- no guarantee on arrival time. Poll may drain the battery.

Do you have a better suggestion please? Thanks very much.


(cross-posting from an answer I gave to a similar question - Does Android support near real time push notification? )

I recently started playing with MQTT http://mqtt.org for Android as a way of doing this sort of thing (i.e. push notification that is not SMS but data driven, almost immediate message delivery, not polling, etc.)

I have a blog post with background information on this in case it's helpful

http://dalelane.co.uk/blog/?p=938

(Note: MQTT is an IBM technology, and I should point out that I work for IBM.)


Firebase Cloud Messaging (FCM) is the new version of GCM. FCM is a cross-platform messaging solution that allows you to send messages securely and for free. Inherits GCM's central infrastructure to deliver messages reliably on Android, iOS, Web (javascript), Unity and C ++.

As of April 10, 2018, Google has disapproved of GCM. The GCM server and client APIs are deprecated and will be removed on April 11, 2019. Google recommends migrating GCM applications to Firebase Cloud Messaging (FCM), which inherits the reliable and scalable GCM infrastructure.

Resource


Android Cloud to Device Messaging Framework

Important: C2DM has been officially deprecated as of June 26, 2012. This means that C2DM has stopped accepting new users and quota requests. No new features will be added to C2DM. However, apps using C2DM will continue to work. Existing C2DM developers are encouraged to migrate to the new version of C2DM, called Google Cloud Messaging for Android (GCM). See the C2DM-to-GCM Migration document for more information. Developers must use GCM for new development.

Kindly check the following link:

http://developer.android.com/guide/google/gcm/index.html


Free and easy method:

If your target user base is not large(less than a 1000) and you want a free service to start with, then Airbop is the best and most convenient.

Airbop Website It uses Google Cloud Messaging service through its API and is provides a good performance. i have used it for two of my projects and it was easy implementing it.

Services like and Urbanship are excellent but provide an entire deployment stack and not just the push notifications thing.

If only push service is your target, Airbop will work fine.

I haven't used Pushwoosh, but is also a great choice. It allows push to 1,000,000 devices for free


C2DM: your app-users must have the gmail account.

MQTT: when your connection reached to 1024, it will stop work because of it used "select model " of linux.

There is a free push service and api for android, you can try it: http://push-notification.org



I dont know if this is still useful. I achieved something like this with a java library at http://www.pushlets.com/

Althoug doing it in a service won't prevent android from shutting it down an killing the listener thread.


I recommend using GCM - Google Cloud Messaging for Android It's free, and for simple uses it's should be very easy.

However it requires to maintain a 3rd side server to send the notifications on your behalf. If you want to avoid that there are some very good industrial solutions for Android push notifications service:

  • Urban Airship - free up to 1M notifications per month, afterwards you are charged per 1000 notifications
  • PushApps - free for 1M notifications per month, and unlimited notifications for 19.99 per month
  • PushWoosh - free for 1M devices, premium plans are from 39 EURO

Diclaimer - I work in PushApps and also use their product in my applications for over a year now.


I'm afraid you've found both possible methods. Google was, at least initially, going to implement a GChat api you could use for a push/pull implementation. Sadly, that library was cut by Android 1.0.


My understanding/experience with Android push notification are:

  1. C2DM GCM - If your target android platform is 2.2+, then go for it. Just one catch, device users have to be always logged with a Google Account to get the messages.

  2. MQTT - Pub/Sub based approach, needs an active connection from device, may drain battery if not implemented sensibly.

  3. Deacon - May not be good in a long run due to limited community support.

Edit: Added on November 25, 2013

GCM - Google says...

For pre-3.0 devices, this requires users to set up their Google account on their mobile devices. A Google account is not a requirement on devices running Android 4.0.4 or higher.*


There's a lot a third party servers like Urban Airship, Xtify, Mainline, ... whiches allow send not only on Android, but also on iOs, Windows Phone ...


You can use Pusher

It's a hosted service that makes it super-easy to add real-time data and functionality to web and mobile applications.
Pusher offers libraries to integrate into all the main runtimes and frameworks.

PHP, Ruby, Python, Java, .NET, Go and Node on the server
JavaScript, Objective-C (iOS) and Java (Android) on the client.


You can use Xtify (http://developer.xtify.com) - they have a push notifications webservice that works with their SDK. it's free and so far, it's worked really well for me.


or....

3) Keep a connection to the server, send keep-alives every few minutes, and the server can push messages instantly. This is how Gmail, Google Talk, etc. works.







alerts