Android Question NB6 How to pass multiple information using Tag

Anser

Well-Known Member
Licensed User
Hi,

This is how we build the NB6 Notification. The 3rd parameter is the Tag
B4X:
nb.Build(cSubject,cMsg,"Offers",HomePage).Notify(nNotificationCount)

Checking the NB6 class, I understand that the 3rd parameter of nb.Build() is a String. I would like to pass few more information via Tag, may be a Map. For eg. in my app I receive few types of FCM Notifications. After receiving the FCM message on the device, the required activity will be called. For eg I will be sending a notification to the app user regarding an OFFER, While receiving the notification, an OFFER ID is also received. I would like to pass both information ie

The Notification type ie "OFFER"
OFFER ID for eg "123"

At present this is how the HomePage's Activity_Resume sub handles the Notification when it is received via the call
B4X:
nb.Build(cSubject,cMsg,"Offers",HomePage).Notify(nNotificationCount)

B4X:
Sub Activity_Resume
    Dim in As Intent = Activity.GetStartingIntent
 
    If in.IsInitialized And in <> OldIntent Then
        OldIntent = in
        Dim intentExtra As String
        If in.HasExtra("Notification_Tag") Then
            intentExtra = in.GetExtra("Notification_Tag")
   
            If intentExtra = "Offers" Then 'The tag 'Offer Notification
   
                ' What needs to be done here to get few more extra information passed via the notification
                ' tag ie the OFFER ID too, so that I can pass all the required info to the right Activity
                Dim mapParameters As Map    : mapParameters.Initialize
                mapParameters.Put("OfferID","123")
                mapParameters.Put("Title", "What ever Title")
                CallSubDelayed2(MyActivityName,"StartWithParameter",mapParameters)          
            End If
        End If
    End If
End Sub

As of now, there is no provision to set the parent activity of the called Activity, called from the Notification (ie when the user press the back key, the activity to be called). So to overcome this limitation, we need to call the HomePage first and from the Activity_Resume of the HomePage activity we need to call the required activity.

Any help will be appreciated.

Thanks
 

DonManfred

Expert
Licensed User
I understand that the 3rd parameter of nb.Build() is a String
put a jsonstring as the tag.

for ex.

B4X:
Sub fm_MessageArrived (Message As RemoteMessage)
    Log("Message arrived")
    Log($"Message data: ID ${Message.MessageId}, Data ${Message.GetData}"$)
    ' Message
    ' ID 0:1527930196160884%33f98919a3d06034
    ' Data {
    ' imgbig=http://basic4android.de/big.png,
    ' imgsmall=http://basic4android.de/small.png,
    ' body=this is the textbody,
    ' title=this is the Title
    '}
    Dim mapParameters As Map    : mapParameters.Initialize
    mapParameters.Put("OfferID","123")
    mapParameters.Put("Title", "What ever Title")
    Dim jgen As JSONGenerator
    jgen.Initialize(mapParameters)

    Dim n As NB6
    n.Initialize("default", Application.LabelName, "DEFAULT").AutoCancel(True)

    If Message.GetData.ContainsKey("imgbig") Then
        Dim j As HttpJob
        j.Initialize("", Me)
        j.Download(Message.GetData.Get("imgbig"))
        Wait For (j) JobDone(j As HttpJob)
        If j.Success Then
            Dim img_big As Bitmap
            img_big = j.GetBitmap
            n.LargeIcon(img_big)
        End If
        j.Release
    End If
    If Message.GetData.ContainsKey("imgsmall") Then
        Dim j As HttpJob
        j.Initialize("", Me)
        j.Download(Message.GetData.Get("imgsmall"))
        Wait For (j) JobDone(j As HttpJob)
        If j.Success Then
            Dim img_small As Bitmap
            img_small = j.GetBitmap
            n.SmallIcon(img_small)
        End If
        j.Release
    Else
        Dim smallbmp As Bitmap
        smallbmp.Initialize(File.DirAssets,"firebase24.png")
        n.SmallIcon(smallbmp)
    End If
    n.Build(Message.GetData.Get("title"), Message.GetData.Get("body"), jgen.ToString, Main).Notify(4)

End Sub

This is such a notification (using special Images for small and big images in the notification.

WhatsApp Image 2018-06-30 at 07.53.21.jpeg
 
Last edited:
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DonManfred

Expert
Licensed User
If the user then clicks on it. Get the json back from the tag and parse it with jsonparser.

B4X:
Sub Activity_Resume
    'Log("Auth.currentUser = "&auth.CurrentUser)
    If auth.CurrentUser.IsInitialized Then
        Log("Auth.currentUser = "&auth.CurrentUser)
        'Auth_SignedIn(auth.CurrentUser)
    End If
  Dim in As Intent = Activity.GetStartingIntent
 
    If in.IsInitialized And in <> OldIntent Then
        OldIntent = in
        Dim intentExtra As String
        If in.HasExtra("Notification_Tag") Then
            intentExtra = in.GetExtra("Notification_Tag")
                      log("XTRA="&intentExtra)
            'If intentExtra = "Offers" Then 'The tag 'Offer Notification
                                    '{"OfferID":"123","Title":"What ever Title"}

                Dim jp As JSONParser
                            jp.Initialize(intentExtra)
                            Dim root As Map = jp.NextObject
                            Dim OfferID As String = root.Get("OfferID")
                            Dim Title As String = root.Get("Title")
              'CallSubDelayed2(MyActivityName,"StartWithParameter",root)       
            'End If
        End If
    End If
End Sub

XTRA={"OfferID":"123","Title":"What ever Title"}
 
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