B4A Library FirebaseNotifications - Push messages / Firebase Cloud Messaging (FCM)

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tznikos

Member
Licensed User
Hi,

I face the same problem with uniplan,

When the application is in the foreground, i receive the notification push, but the title and body are null.
If the application is in the Background or is closed then receive the message correct,

can anyone know why happen that ?
 
Last edited:

rad

Member
Licensed User
Hi all...

I have implement this library with successful, although sending notification from firebase console sometimes getting null value...
But when I try sending notification from B4A :

B4X:
#Region  Project Attributes
    #ApplicationLabel: Simpush
    #VersionCode: 1
    #VersionName: Simple
    'SupportedOrientations possible values: unspecified, landscape or portrait.
    #SupportedOrientations: portrait
    #CanInstallToExternalStorage: False
#End Region

#Region  Activity Attributes
    #FullScreen: False
    #IncludeTitle: True
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
    Private const API_KEY As String = "AIzaSyAQ7XJnHBD1lz2z2rJpGvmKtF4O4Hy9J0Q"
End Sub

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.

    Private btnPush As Button
End Sub

Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    Activity.LoadLayout("frmMain")
End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub

Private 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}"$, "priority": "high")
   Dim data As Map = CreateMap("title": Title, "body": Body)
   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


Sub JobDone(job As HttpJob)
   Log(job)
   If job.Success Then
     Log(job.GetString)
   End If
   job.Release
End Sub

Sub btnPush_Click
    SendMessage("general", "Test", "This is only notification test")
End Sub
It's nothing happen... no notification arise..
Can anyone help me to solve this issue?

I can not use B4J sample because:
1. I don't have B4J (I only have B4A, and I always develop my application using B4A)
2. My Current/Existing application which will be add FCM Service are developed from B4A.
 

Alpandino

Member
Licensed User
Hi all...

I have implement this library with successful, although sending notification from firebase console sometimes getting null value...
But when I try sending notification from B4A :

B4X:
#Region  Project Attributes
    #ApplicationLabel: Simpush
    #VersionCode: 1
    #VersionName: Simple
    'SupportedOrientations possible values: unspecified, landscape or portrait.
    #SupportedOrientations: portrait
    #CanInstallToExternalStorage: False
#End Region

#Region  Activity Attributes
    #FullScreen: False
    #IncludeTitle: True
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
    Private const API_KEY As String = "AIzaSyAQ7XJnHBD1lz2z2rJpGvmKtF4O4Hy9J0Q"
End Sub

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.

    Private btnPush As Button
End Sub

Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    Activity.LoadLayout("frmMain")
End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub

Private 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}"$, "priority": "high")
   Dim data As Map = CreateMap("title": Title, "body": Body)
   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


Sub JobDone(job As HttpJob)
   Log(job)
   If job.Success Then
     Log(job.GetString)
   End If
   job.Release
End Sub

Sub btnPush_Click
    SendMessage("general", "Test", "This is only notification test")
End Sub
It's nothing happen... no notification arise..
Can anyone help me to solve this issue?

I can not use B4J sample because:
1. I don't have B4J (I only have B4A, and I always develop my application using B4A)
2. My Current/Existing application which will be add FCM Service are developed from B4A.
Hi rad,
when you send a message from an app you're not sending a notification, but a message that you'll receive inside a specific service called FirebaseMessaging (the name must be this) and in a specific sub called "fm_MessageArrived". In this case it's up to you decide what to do whit this message (do an action, show a notification, modify a db table, etc).
In your code you're sending a message to the topic called "general", so this message will be received by any device using your app registered to this topic.
When you send a message from the firebase console, instead, you're sending a notification that will appear on the notification bar only if your app is in background.

Bye
 

rad

Member
Licensed User
Hi rad,
when you send a message from an app you're not sending a notification, but a message that you'll receive inside a specific service called FirebaseMessaging (the name must be this) and in a specific sub called "fm_MessageArrived". In this case it's up to you decide what to do whit this message (do an action, show a notification, modify a db table, etc).
In your code you're sending a message to the topic called "general", so this message will be received by any device using your app registered to this topic.
When you send a message from the firebase console, instead, you're sending a notification that will appear on the notification bar only if your app is in background.

Bye
Hi Alpandino,
Thanks for the enlightenment...
 

rad

Member
Licensed User
b4j.jpg


Hi Erel...

please explain me, what is wrong with the image above conditions...
coz I have no idea about java programming... :(
 
Last edited:

Smee

Well-Known Member
Licensed User
I will soon be renewing my B4A licence but in the meantime I have been the topics on FBM with a view to implementaion into an app I am writing. The java snippet looks exactly like B4A. Why would that code not work within B4A
 
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