Android Question Notify Category

[dibesw]

I have a notify in my app

Sub notifica
    Dim cn As NotificationBuilder
    cn.Initialize
    cn.DefaultLight = True
    cn.DefaultVibrate = True
    cn.DefaultSound = True
    'cn.ContentInfo = "SumUp POS"
    'cn.ContentText = "SumUp POS"
    cn.ContentTitle = "SumUp POS"
    cn.SmallIcon="icon"
    cn.Notify(1)
End Sub

and this is my notify

if tap to "TUTTE LE CATEGORIE" (all categories)

Why I have two categories?
What does it mean "Senza categoria" (without category")??

THANKS

 

[DonManfred]

Firebase notification categories

I'm missing something and it is not clear to me how to manage categories in Firebase notifications. When I first install amy app and send it a notification, I receive two notifications: The first has the title and body as I have composed it, the second one has just the app name a stitle and...

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