showCupertinoModalPopup(
                context: context,
                builder: (context) {
                  return CupertinoActionSheet(
                    actions: [],
                    title: Text("Sampark Tag"),
                    message: CupertinoSearchTextField(),
                    cancelButton: Row(
                      mainAxisAlignment: MainAxisAlignment.spaceAround,
                      children: [
                        Container(
                          margin: EdgeInsets.symmetric(horizontal: 10),
                          child: CupertinoActionSheetAction(
                              onPressed: () {}, child: Text("Cancel")),
                        ),
                        CupertinoActionSheetAction(
                            onPressed: () {}, child: Text("Cancel"))
                      ],
                    ),
                  );
                },
              );

result needed

CodePudding user response：

Use below code

showCupertinoModalPopup(
      context: context,
      builder: (BuildContext context) =>
          CupertinoActionSheet(
        title:
            const Text('Select Option'),
        message:
            const Text('Which option?'),
        actions: <Widget>[
          CupertinoActionSheetAction(
            child: const Text('1'),
            onPressed: () {
              print('pressed');
            },
          )
        ],
        cancelButton: Container(
          decoration: BoxDecoration(
            borderRadius:
                BorderRadius.circular(
                    14),
            color: Colors.black
                .withOpacity(0.2),
          ),
          child: Row(
            children: [
              Expanded(
                flex: 5,
                child: Container(
                  decoration:
                      BoxDecoration(
                    borderRadius:
                        BorderRadius
                            .circular(
                                14),
                    color: Colors.white
                        .withOpacity(
                            0.8),
                  ),
                  child:
                      CupertinoActionSheetAction(
                    onPressed: () =>
                        Navigator.pop(
                            context),
                    isDestructiveAction:
                        true,
                    child: const Text(
                        'Cancel'),
                  ),
                ),
              ),
              const SizedBox(
                width: 10,
              ),
              Expanded(
                flex: 5,
                child: Container(
                  decoration:
                      BoxDecoration(
                    borderRadius:
                        BorderRadius
                            .circular(
                                14),
                    color: Colors.white
                        .withOpacity(
                            0.8),
                  ),
                  child:
                      CupertinoActionSheetAction(
                    onPressed: () =>
                        Navigator.pop(
                            context),
                    child: const Text(
                        'Cancel'),
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
  ),