Develop Reference

Sending Android Notifications between app users

I am currently aiming to make an app in Android Studio that allows one user to push a button and another user to receive a push notification as a result. How might I do this?

You're going to need a server to act as an intermediary. Set up an API endpoint that your app can call to request a notification, and have your server dispatch a message to the receiving device using something like FCM.

Get push notification payload when opening app, Android Titanium Appcelerator

I have activated push notifications in my application and I have done all the settings with Google and Apple to be able to send from the Appcelerator Dashboard.
I can receive notifications on both Android and iOS without any problems.
In iOS, when i click the notification from the notification center, the application opens and the callback function of Ti.Network.registerForPushNotifications is executed automatically.
The problem is that in Android, the function assigned to the callback event of the cloudPush module is not executed, I understand that it will be because when opening the application the listener is not yet created.
If I receive the notification when the application is open the callback function runs smoothly.
Reading in documentation of Android seems to me to understand that the notification is included in the extras of the intent when opening the application, but I am not clear what extra is, since in Appcelerator I do not find any function to obtain all the extras.
Someone could give me an idea of ​​how to get the payload, whether or not when I click the notification the app is in the background, as if it is totally closed?
Thanks in advance.

Async Notifications in react-native

ok so I have an app in react native which retrieves the information from an api. Now the api whenever it has data to send will send the data to the device and I want my app to be always running in background so as to receive the response from the api. API can send data anytime so I want to show the user data received as soon as a message arrives.

You need to look into Push Notifications. You can't guarantee that your app will always be running in the background, but Push Notifications allow you to send data to a user's phone even when the app isn't running. Once the user opens the notification you can perform some action, based on the data sent with the notification.
A good React Native component for push notifications is React Native Push Notification, which offers cross-platform notifications. Once you have this implemented you can create a handler which calls your API when the app is opened from a notification.

How are Android GCM push notifications processed?

I am working on a Cordova Android app that handles push notifications using the PushPlugin. The app will correctly receive push notifications when the app is open. However no push notifications are received (or at least handled) if the app is not open.
This makes some sense given that the plugin has code that specifically handles receiving push notifications. What does not make much sense to me is why this code even exists at all. Before building this app, I assumed that the OS had some sort of queuing system that received any/all notifications.
Does a notification queue exists in Android that handles push notifications for all apps or does each app need to handle the notifications on their own.
Can Android apps process push notifications while closed?
Can Cordova Android apps process push notifications while closed?

In Google Cloud Messaging (which is the push notifications mechanism used by the PushPlugin) each application decides how to handle the notification. When a push notification arrives to the device, GCM triggers a BroadcastReceiver in the recipient application, and the application is responsible for handling the notification data.
Android apps can process push notifications when closed unless they are explicitly stopped by the user (in which case no notifications will reach the app until it is restarted again by the user). If they leave the foreground by the user switching to another app or going to the home screen, the can still receive and process notifications.
Yes. According to the PushPlugin you posted a link to, it seems that they can. When the app is not in the foreground, the notification is handled differently - a notification is added to the notification bar, and when it is tapped, it should open the app.

With PushPlugin, when sending push notifications to GCM (for GCM to send them to the device) one has to include a msgcnt key value pair after the message key value pair in the payload value in the JSON message, like this:
{
"GCM":"{\"data\":{\"message\":\"hello\",\"msgcnt\":\"1\"}}"
}
or else PushPlugin will not handle the notification when the app is in the background. It has to do with the way the GCMIntentService.java file is written in the plugin.

push notification in android application

Hi i wish to implement push notification in my own android application. how can i do? please give me some ideas....
This kind of broadcast receivers should receive messages even if my app is closed(like Gmail.here i receive one new message in my inbox means that time the notification message is displayed on top of my android device,clicked that notification message means directly go to inbox and view that message).
here i wish to insert one data on my database means the notification message is display on my android app even my app is closed.

Please see http://developer.android.com/guide/google/gcm/index.html. You need to implement GCM.
EDIT:
To get notification even if app is in background, see Android GCM (push notification): device doesn't receive notification if application is stopped.
See Android GCM basic implementation, http://developer.android.com/guide/google/gcm/demo.html & How to setup Google Cloud Messaging for Android?

see http://developer.android.com/guide/google/gcm/index.html for detaily. There you find a tutorial and all the basic stuff