Android Question Question with remote notifications with Firebase

[Christian García S.]

Hello,

I have a question when receiving notifications sent through a script https://fcm.googleapis.com/fcm/send.

When the application is in the foreground the notification is received, I click on the notification and the fm_MessageArrived event is executed, but when the application is paused or off I receive notifications correctly but when I click on the notification the fm_MessageArrived event does not fire and I can´t handle any event in order to open an activity or display a message.

I've done some tests but I can not get it to work, I do not know if I'm missing something.

I am using B4 8.30, NB6, target sdk 26, I have a FirebaseMessaging service with this code:

Sub Service_Create
    fm.Initialize("fm")
    SubscribeToTopics
End Sub

Public Sub SubscribeToTopics
    Log("Suscrito a fireBase")
    fm.SubscribeToTopic("general") 'you can subscribe to more topics   
    Globals.Token = fm.Token
    Log("Token:" & Globals.Token)
End Sub

Sub Service_Start (StartingIntent As Intent)
    If StartingIntent.IsInitialized And fm.HandleIntent(StartingIntent) Then Return
    Sleep(0) 'allow the MessageReceived event to be raised.
    Service.StopAutomaticForeground
End Sub

Sub fm_MessageArrived (Message As RemoteMessage)   
    Log("Message arrived")
    Log($"Message data: ${Message.GetData}"$)   
End Sub

In the starter service I have this:

Sub Service_Create
    CallSubDelayed(FirebaseMessaging, "SubscribeToTopics")    
End Sub

Thank you.

 

[Christian García S.]

Now I receive the notifications, I had a mistake in that script, I changed in json "notification" to "data", now event is raised.

In previus versions I have to notify with this code when I receveid message on fm_MessageArrived with this code:

Sub Push2(Titulo As String, texto As String)
    Dim n As Notification
    IdNotification = IdNotification + 1
    n.Initialize
    n.Icon = "icon"
    n.Vibrate = True
    n.Sound = True
'    n.OnGoingEvent = True
    n.AutoCancel = True
    'n.SetInfo(Titulo, texto, act_notificaciones)
    n.SetInfo2(Titulo,texto, Titulo, act_notificaciones)
    n.Notify(IdNotification)
  
End Sub

Now with this version and target SDK, I received a two notifications, the first when I call sub Push2, and other notification I think is default, but the second notification has a title and Body with the name of the app, and I have two notifications and I need only one.
I dont know if I maked a mistake.

I tested in two devices in android 8 I have 2 notifications, in android 6 I have 1 notification as expected.

Thanks

 

[Anser]

Ensure the following is done

1. All the recommended updates are done via B4A SDK Manager
2. The FirebaseMessaging service has the following code
   

   Sub Service_Start (StartingIntent As Intent)
       If StartingIntent.IsInitialized Then fm.HandleIntent(StartingIntent)
       Sleep(0)
       Service.StopAutomaticForeground 'remove if not using B4A v8+.
   End Sub

3. Ensure that the latest FirebaseNotifications libraries are used v1.21
4. Manifest Entries required for firebase as follows
   

   'Always required when using Google Play Services or Firebase:
   '************ Google Play Services Base ************
   CreateResourceFromFile(Macro, FirebaseAnalytics.GooglePlayBase)
   
   'Always required when using Firebase:
   CreateResourceFromFile(Macro, FirebaseAnalytics.Firebase)
   
   'Always required when using Firebase Notifications / Push messages
   CreateResourceFromFile(Macro, FirebaseNotifications.FirebaseNotifications)

I had the same issue, resolved it by following the above steps.

https://www.b4x.com/android/forum/t...-2-notifications-simultaneously-solved.94233/

 

[Christian García S.]

@Anser, thanks.

I have to put Service.StopAutomaticForeground at the end of fm_MessageArrived, this code resolves issue.

@Erel could add this code in tutorial (https://www.b4x.com/android/forum/threads/automatic-foreground-mode.90546/#content)