how to solve this issue: type 'int' is not a subtype of type 'List<int>' in type cast? Now I am trying to do somethin like that:

  ElevatedButton(
onPressed: () {
 BasesService().SelectBaseAsync(
  basesNames?[index]['id]);
},

Also I was trying to cast to needed type like this - basesNames?[index]['id'] as List<int> , but it also returned me the same error: type 'int' is not a subtype of type 'List<int>' in type cast

the print of basesNames - [{name: MyDb, id: 4}]

Future<bool> SelectBaseAsync(List<int> integers) async {
   

    final hubConnection = HubConnectionBuilder()
        .withUrl(
          'http:mysecurelink'
        )
        .build();
    await hubConnection.start();
    bool select = false;
    List<int>? saveInts;
    if (hubConnection.state == HubConnectionState.Connected) {
      await hubConnection
          .invoke('SelectBaseAsync', args: [integers]).then((value) {
        saveInts = integers;
        select = value as bool;
      });
    }

    hubConnection.onclose(({error}) {
      throw Exception(error);
    });
    print(saveInts);
    print(select);
    return select;
  }

CodePudding user response：

As you can see in print(basesNames) result, basesNames[index]['id'] return an int value not list of int, so what you can do are either change your SelectBaseAsync constructer to accept an int instead of List<int> or pass value like this:

BasesService().SelectBaseAsync([basesNames?[index]['id']]);