When I open the app and send notification from the Firebase console , the onMessageReceived works fine. The app has its small icon , Notification sound ,etc.. But when the app is killed or is closed , no notification sound or a small icon appears.
After GCM the google changed the GCM as FCM, And FCM are containing two type of payload one is Notification and another One is Data payload when you are posting notification with Notification Payload then app will be in background then onMessageReceived not called but when in foreground onMessageReceived called, But if you put Data payload then all-time onMessageReceived is called.
Using Notification Payload
onMessageReceived called in the only foreground not in background
Using Data Payload
onMessageReceived called every time
Related
While sending the notification and when my application is in the foreground, i am getting the notification with the action buttons in the notification, while when my application is killed or in background the notification is coming but without the action button, i am getting just the title and content body.
I have tried many solution but it does work. Is android have new permission issues are introduced?
Any help and suggestion will be appreciated.Here is the Image
As there's no any code provided I can't say what's the specific issue here, butt keep in mind. In FCM there are 2 types of notifications:
Notification payload
Data payload
When you send a notification from FCM, it is a notification payload. In this case if your app is killed, the notification will go directly to the system tray and will be handled by the OS. The onMessageReceived() won't execute.
If you send the notification from the backend side, it's a data payload. In that case the onMessageReceived() will be executed.
Check more here FCM Message Types
I am using FCM for push notifications and I have one issue. When the application is in the foreground that onMessageReceived call and I show notification but when the app in background or kill then onMessageReceived not called and my own notification method not called but notification show when content.
Mean if I send a notification from the console with the title "Hello" and onMessageReceived I show a notification with the dummy title "My Notification".
When app in the foreground that notification show "My Notification" title but when in the background and kills then shows "Hello".
If I remove notification generate code from onMessageReceived then notification also popup.
This is working as intended, notification messages are delivered to your onMessageReceived callback only when your app is in the foreground. If your app is in the background or closed then the system tray will receive the message and read body and title from the notification block and shows the default message and title in the notification bar, and any data from that message is passed to the intent that is launched as a result of the user tapping on the notification.
Reference Link:
https://firebase.google.com/docs/cloud-messaging/android/receive
I have a scenario when i don't want android system to display push notification if app is in foreground.
Instead i want to display some view or launch activity in the app.
This is my code.
#Override
public void onMessageReceived(RemoteMessage remoteMessage) {
super.onMessageReceived(remoteMessage);
//...
//...
sendNotification(remoteMessage.getNotification(), subtitle);
}
If i comment out sendNotification()method, it does not display notification on both background & foreground cases.
There are two types of messages data messages and notification
messages. Data messages are handled here in onMessageReceived whether
the app is in the foreground or background. Data messages are the type
traditionally used with GCM. Notification messages are only received
here in onMessageReceived when the app is in the foreground. When the
app is in the background an automatically generated notification is
displayed. When the user taps on the notification they are returned to
the app. Messages containing both notification and data payloads are
treated as notification messages. The Firebase console always sends
notification messages.
Thought you can only handle notification when app is in foreground.
Solution:-
Tell your server that app is in foreground and background and they will send notification when app is in foreground only
My app has push notification (FCM). When app runs in foreground,I can get data payload in onMessageReceived() function. When app runs in background or app was fully closed, onMessageReceived() function was not invoked.
My question is, is possible to get data payload when app in background or closed?
Thanks in advance!
If you want to receive data payload in your onMessageReceived() then you need to do change where you generating the notification(like at your server side),
You need to remove notification payload just need to send data payload If you send only data payload then its work like bellow one.
From
{"to":"[add your token]","notification":{"title":"[add title]","body":"[add your message]"},"priority":"high"}
TO
{"to":"[add your token]","data":{"title":"[add title]","body":"[add your message]"},"priority":"high"}
After doing this you will get notification perfectly
I have an android app connected to FCM(firebase cloud messaging) for sending notifications . However , when the app is in background , it doesn't apply
custom notifications. I think this is because it does not enter OnMessageReceived method . Whats the solution for this ? As i read somewhere it can be done using HTTP Api but i am not sure of how to go about it ? Please help.Thank you.
Whether the method onMessageReceived is called is dependent on the notification payload.
See 'Handling Messages' section in FCM docs here.
Handling messages
onMessageReceived is provided for most message types, with the following exceptions:
Notification messages delivered when your app is in the background. In this case, the notification is delivered to the device’s system tray. A user tap on a notification opens the app launcher by default.
Messages with both notification and data payload, both background and foreground. In this case, the notification is delivered to the device’s system tray, and the data payload is delivered in the extras of the intent of your launcher Activity.
In summary, if the app is in foreground, then onMessageReceived will always be called. If the app is in background, then onMessageReceived will only be called if the notification payload is data only.
So to answer your question, if you must have onMessageReceived every time regardless if the app is in foreground or background state, then set your notification payload to contain data only.