Android Question Problem with duplicate fcm message!

Lucas Siqueira · Sep 25, 2019

Hello everyone!

Problem with duplicate fcm message!

I'm having problems with firebase cloud message, when I send message, I get two on mobile, one I sent and another as if it was automatic ...

My version of b4a is the latest (9.50), FirebaseNotifications version is (1.21) ...

On the firebase website I found that there are two types of messages: Notification message and Data message ... (https://firebase.google.com/docs/cloud-messaging/concept-options#notifications_and_data_messages)

I have tried in every way to make the data message work, but none of the times I was unsuccessful

asales · Sep 25, 2019

Try this in the sub Service_Start:

B4X:

Sub Service_Start (StartingIntent As Intent)
    If StartingIntent.IsInitialized And fm.HandleIntent(StartingIntent) Then Return
    
    '*** INSERT THIS LINES:
    Sleep(0)
    Service.StopAutomaticForeground 'Call this when the background task completes (if there is one)
End Sub

Lucas Siqueira · Sep 25, 2019

still continue with same problem

Brandsum · Sep 25, 2019

If you want to handle fcm message from app then do not send title body but only data variable. If you send title and body then fcm message will be handled by os then it will be forwarded to your app. Thats why you are seeing two notification.
Check this https://www.b4x.com/android/forum/t...tions-php-stopped-working.109651/#post-684889

Erel · Sep 25, 2019

Don't use the Firebase console to send messages. Use the B4J code.

Lucas Siqueira · Sep 25, 2019

Erel said:
Don't use the Firebase console to send messages. Use the B4J code.

I'm using b4j to send notifications, the source is attached ...

DonManfred · Sep 25, 2019

Lucas Siqueira said:
I'm using b4j to send notifications, the source is attached ...

but the call to firebase is different from the b4j project fronm the tutorial!?
Means this: "restricted_package_name"ACKAGE_APP

https://www.b4x.com/android/forum/t...-messages-firebase-cloud-messaging-fcm.67716/
you b4a app does not match the code from the tutorial. Update your b4a code. Especially firebaseMessaging Service.

This is the code from the B4J App from the tutorial:

B4X:

rivate Sub SendMessage(Topic As String, Title As String, Body As String)
    Dim Job As HttpJob
    Job.Initialize("fcm", Me)
    Dim m As Map = CreateMap("to": $"/topics/${Topic}"$)
    Dim data As Map = CreateMap("title": Title, "body": Body)
    If Topic.StartsWith("ios_") Then
        Dim iosalert As Map =  CreateMap("title": Title, "body": Body, "sound": "default")
        m.Put("notification", iosalert)
        m.Put("priority", 10)
    End If
    m.Put("data", data)
    Dim jg As JSONGenerator
    jg.Initialize(m)
    Job.PostString("https://fcm.googleapis.com/fcm/send", jg.ToString)
    Job.GetRequest.SetContentType("application/json;charset=UTF-8")
    Job.GetRequest.SetHeader("Authorization", "key=" & API_KEY)
End Sub

Brandsum · Sep 25, 2019

Lucas Siqueira said:
I'm using b4j to send notifications, the source is attached ...

Try to change firebase service start sub code to this

B4X:

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

Lucas Siqueira · Sep 25, 2019

Brandsum said:
Try to change firebase service start sub code to this

B4X:

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

thank you all! That was the solution to my duplicate messaging problem! Many thanks to everyone who helped me!

Lucas Siqueira · Sep 25, 2019

Brandsum said:
Try to change firebase service start sub code to this

B4X:

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

Thanks, it worked!
Can you explain what this code does?
I didn't get it right, but it works

Brandsum · Sep 25, 2019

As per your previous code when the firebase service was receiving the payload it was starting to handle the intent in foreground mode. But after handling, you were not stopping foreground mode.

B4X:

If StartingIntent.IsInitialized And fm.HandleIntent(StartingIntent) Then Return

But it should be like

if the service starting intent is initialized then handle the intent
B4X:
```
If StartingIntent.IsInitialized Then fm.HandleIntent(StartingIntent)
```
after that close the service foreground mode
B4X:
```
Service.StopAutomaticForeground
```

Lucas Siqueira · Sep 25, 2019

Brandsum said:
As per your previous code when the firebase service was receiving the payload it was starting to handle the intent in foreground mode. But after handling, you were not stopping foreground mode.

B4X:

If StartingIntent.IsInitialized And fm.HandleIntent(StartingIntent) Then Return

But it should be like

if the service starting intent is initialized then handle the intent

B4X:

If StartingIntent.IsInitialized Then fm.HandleIntent(StartingIntent)

after that close the service foreground mode

B4X:

Service.StopAutomaticForeground

Thanks!

Android Question Problem with duplicate fcm message!

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