Flutter: check the modal bottom sheet is closed by drag down or by Navigator.pop

Question

showCupertinoModalBottomSheet(
      expand: true,
      context: context,
      backgroundColor: ColorPalettes.white,
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.only(
          topLeft: Radius.circular(10),
          topRight: Radius.circular(10),
        ),
      ),
      isDismissible: true,
      builder: (rootContext) => ManageSavingsPlanSheet(
        argument: ManageSelectArgument(
          iban: widget.argument.iban,
          cashBalance: widget.argument.cashBalance,
          digitalDepotAccountId: widget.argument.digitalDepotAccountId,
          withdrawBalance: widget.argument.withdrawBalance,
          canWithdraw: widget.argument.canWithdraw,
          isPaused: widget.argument.isPaused,
        ),
      ),
    ).then((_) => _getSavingsPlanDetail(context));

Can we check the modal bottom sheet is closed by drag down or by Navigator.pop?

Because I have a condition when the modal is closed by Navigator.pop want to execute API function (_getSavingsPlanDetail), but if by drag down is not.

Because for now the _getSavingsPlanDetail is always executed.

To create a modal bottom sheet, I use this package: https://pub.dev/packages/modal_bottom_sheet

Answer 1

you can try in this way

bool? b = await showCupertinoModalBottomSheet<bool?>(
      expand: true,
      context: context,
      backgroundColor: ColorPalettes.white,
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.only(
          topLeft: Radius.circular(10),
          topRight: Radius.circular(10),
        ),
      ),
      isDismissible: true,
      builder: (rootContext) => ManageSavingsPlanSheet(
        argument: ManageSelectArgument(
          iban: widget.argument.iban,
          cashBalance: widget.argument.cashBalance,
          digitalDepotAccountId: widget.argument.digitalDepotAccountId,
          withdrawBalance: widget.argument.withdrawBalance,
          canWithdraw: widget.argument.canWithdraw,
          isPaused: widget.argument.isPaused,
        ),
      ),
    );

if(b == true){
// came from Navigator.pop
// can do anything
_getSavingsPlanDetail(context));
}else{
 // came from other way
}

Note: use Navigator.pop(context, true); instate of Navigator.pop(context);