Sub btn_sendMessage_Click
messageref.Initialize("messages", roomref.Child(childOftheOnlyRoom & "/messages") ,"message")
Dim messagesitems As Map = CreateMap("senderId": auth.CurrentUser.Uid, "text": "Test Message 1")
messageref.push.setValue(messagesitems,"rooms","messages")
End Sub
Please nmote that some of the methods does NOT retrurn a new reference but return a QUERY.
If you want to use the query as object then you need to use a Query type....
java.lang.ClassCastException: de.donmanfred.QueryWrapper cannot be cast to de.donmanfred.DatabaseReferenceWrapper
The result of the method you are using is a Query, not a DatabaseReference.