Develop Reference

Android Receive FCM when app closed like Gmail

I use FCM API push notification for my Android app. When my app is running on foreground and background, it's fine, but when my app is closed, I don't receive any notification from FCM.
I need a solution for this problem, like Gmail app. It can receive notifications when app is closed or killed.

You need to override onMessageReceived() of FCM.
you can read more details : https://firebase.google.com/docs/cloud-messaging/android/receive

OneSignal: How to send push notification only if app is active?

I am using push api from OneSignal.com to send notifications. It's working perfectly but I want to receive notifications only if app is Active. If app is closed or not active then Onsignal notifications should be stopped.
Is this possible with this service?
I'll really appreciate for any contribution.
Thanks

You does not send push notification on active user however you have send notification using creating segment with adding filter last session time.

Firebase Messaging Android Notification not received when app is open

I configured my Android app as the Firebase docs and I am receiving notifications normally, however when the app is in the foreground I do not get any notifications. Is there a way to get the notifications even if the app is in the foreground.

if you have done all the steps as given in the docs then when your app is in foreground your "sendNotification()" is not called, which is responsible for showing the notification. If you want notification when app is in foreground then just sendNotification() inside the onMessageReceived()
for more check this link
https://github.com/firebase/quickstart-android/blob/master/messaging/app/src/main/java/com/google/firebase/quickstart/fcm/MyFirebaseMessagingService.java

Using GCM for Push Notifications

I am trying to follow a tutorial on using GCM to push notifications for my application. I have the server up and running, and the android app running. From the server, I can push a notification message, but the notification only pops up when the activity is actually running. How can I register, in my manifest I assume, to answer notifications when the app isn't up and running.

I figured it out, I was missing an adjustment to my manifest and broadcast receiver.

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.