Sub CreateNotificationChannel(ImportanceLevel As Int)
   Dim p As Phone
   If p.SdkVersion >= 26 Then
       Dim ctxt As JavaObject
       ctxt.InitializeContext
       Dim channelId As String = "channel_" & ImportanceLevel
       Dim channel As JavaObject
       channel.InitializeNewInstance("android.app.NotificationChannel", Array(channelId, Application.LabelName, ImportanceLevel))
       'modify the channel
       'For example: disable the badge feature
       channel.RunMethod("setShowBadge", Array(False))
       
       'set it
       Dim manager As JavaObject = ctxt.RunMethod("getSystemService", Array("notification"))
       manager.RunMethod("createNotificationChannel", Array(channel))
       
   End If
End Sub

Dim n As Notification
   CreateNotificationChannel(n.IMPORTANCE_HIGH)
   n.Initialize2(n.IMPORTANCE_HIGH)
   n.Icon = "icon"
   n.SetInfo("test", "test", Main)
   n.Notify(1)