Delphi FMX TListview - 如果表 Blob 为空，则显示默认 png

Question

Instead of storing a default.png into every row of the database where the image is empty (waste of database space), is there a way to display this default.png in the Listview wherever image is empty/null in the table?

(I'm using livebindings by code).

Answer 1

You can check and set in ListView UpdateObjects Event:

procedure TForm1.ListView1UpdateObjects(const Sender: TObject;
  const AItem: TListViewItem);
begin
  if not Assigned(AItem.Bitmap) then
    AItem.Bitmap.Assign(Image1.Bitmap);
end;

best regards
Moskw@