Flutter：通过向下拖动或 Navigator.pop 检查模态底部工作表是否已关闭

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));

我们可以通过向下拖动或通过 Navigator.pop 检查模式底部表单是否关闭？

因为我有一个条件，当模态被 Navigator.pop 关闭时想要执行 API 函数 (_getSavingsPlanDetail)，但如果通过向下拖动则不会。

因为目前 _getSavingsPlanDetail 始终执行。

要创建模态底部表，我使用此包： https://pub.dev/packages/modal_bottom_sheet

Answer 1

你可以这样尝试

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
}

注意：在 Navigator.pop(context); 的状态下使用 Navigator.pop(context, true);