具有LiveBindings的FMX ListView

Question

I am developing an FMX (Android) app using a ListView in Delphi 10.2.3. I have the Listview live(bound) to a ClientDataSet with (Synch->*) . This works very well, and any changes in Listview are propagated to the ClientDataSet , including the ClientDataSet's event handlers, such as BeforeUpdate , Post and AfterScroll .

Now when I move the record pointer in the ClientDataSet programmatically , the Listview does not synch with the change. It seems the Livebinding only works "one way" (from the UI to the Dataset).

How can I make the Listview follow the ClientDataSet , the way it does in the VCL when using a DataSource?

// here I expect the see the selected item start at the first item 
// in the UI in index order and move quickly down through the 
// list until it stops at the last one. This doesn't happen. The UI remains
// unaffected.
ClientModule.CDSData.First;
while not ClientModule.CDSData.Eof do
begin
   ClientModule.CDSData.Next;
   Sleep(100);
end;

Answer 1

The easy answer to this question is to perform a

if ClientModule.CDSData.Locate('PKID', VarArrayOf([PKIDValue]), []) then

It seems that while moving the record pointer using CDSData.Next doesn't sync back to the Live(Bound) Listview , using a locate does.