Found solution : For each element of BddAdresseClient elementAt(1)
return ListView.builder( itemCount: snapshot .data!.length, // mettre le ! pour tester le null itemBuilder: (context, int currentIndex) { return affClient( snapshot.data![currentIndex], context);
Widget affClient(List infoClient, BuildContext context) { return new ListTile( title: new Card(
Text( infoClient.elementAt(1).toString(),
