flutter - Flutter - 在呈现模式后在 showModalBottomSheet 上更改 enableDrag 和 isDismissible

Question

我想更改我的 showModalBottomSheet 所处的状态。特别是在 true/false 之间更改 enableDrag 和 isDismissible 而不显示新模式或替换已呈现的模式。目前这有可能吗？

bool allowDismiss = false; // change this variable after render

showModalBottomSheet(
          context: context,
          isScrollControlled: true,
          isDismissible: allowDismiss, 
          enableDrag: allowDismiss,
          shape: RoundedRectangleBorder(
            borderRadius:
                BorderRadius.only(topLeft: Radius.circular(30), topRight: Radius.circular(30)),
          ),
          builder: (context) => Container(height: 400),
        )