changeFirstItemStatusByIndex method
Implementation
void changeFirstItemStatusByIndex(int index, bool check) {
if (_state == null) return;
if (index < 0 || index >= _state!.items.length) return;
_state!.items[index].check = check;
if (_state!.multipleChoice == true) {
_state!.confirmItems[index].check = check;
}
_state!.update();
}