一、效果图

二、主要代码

import 'package:company_manage_flutter/xcClass/dicDataProp.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';

class CheckListWidget extends StatefulWidget {
  final List<Map<String, dynamic>> list;
  final Function? onChanged;
  final DicDataProp props;
  Map<String, dynamic>? initValue;
  CheckListWidget(
      {super.key,
      required this.list,
      this.onChanged,
      this.props = const DicDataProp(),
      this.initValue});

  @override
  State<CheckListWidget> createState() => CheckListWidgetState();
}

class CheckListWidgetState extends State<CheckListWidget> {
  RxMap<String, dynamic> selected = <String, dynamic>{}.obs;

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    selected.value = widget.initValue ?? {};
  }

  @override
  Widget build(BuildContext context) {
    return buildCheckList(widget.list, widget.onChanged, props: widget.props);
  }

  void test() {
    print('test-组件内的方法');
  }

  //单选列表
  Widget buildCheckList(List<Map<String, dynamic>> list, Function? onChanged,
      {DicDataProp? props}) {
    String label = props?.label ?? 'label';
    String value = props?.value ?? 'value';
    return Obx(() => Container(
        width: Get.width,
        child: Column(
          children: list.asMap().entries.map((entry) {
            int index = entry.key;
            dynamic item = entry.value;
            return Column(
              children: [
                GestureDetector(
                    onTap: () {
                      selected?.value = item;
                      if (onChanged != null) {
                        onChanged(item);
                      }
                    },
                    child: Container(
                      width: Get.width,
                      decoration: BoxDecoration(
                        color: Colors.blue.withOpacity(0),
                      ),
                      padding: const EdgeInsets.symmetric(
                          vertical: 16, horizontal: 16),
                      child: Row(
                        children: [
                          Icon(
                              (selected?.value[value] ?? '') == item[value]
                                  ? Icons.check_circle
                                  : Icons.circle_outlined,
                              size: 22,
                              color:
                                  (selected?.value[value] ?? '') == item[value]
                                      ? Color.fromRGBO(50, 73, 223, 1)
                                      : Color.fromRGBO(21, 23, 30, 0.40)),
                          SizedBox(width: 6),
                          Text(
                            item[label] ?? "",
                            style: TextStyle(
                              fontSize: 16,
                            ),
                          ),
                        ],
                      ),
                    )),
                Divider(
                  height: 1,
                  color: index + 1 == list.length
                      ? Color.fromRGBO(128, 130, 145, 0)
                      : Color.fromRGBO(128, 130, 145, 0.20),
                ),
              ],
            );
          }).toList(),
        )));
  }
}

三、使用

//CheckListWidgetState 不能已下划线开头，因为_开头是私有的，不能在其他文件中访问
  final checkListWidgetKey = GlobalKey<CheckListWidgetState>();
 CheckListWidget(
    key: checkListWidgetKey,
     list: bottomSheetList,
     onChanged: (value) {
       print("CheckListWidget:${value}");
     },
     initValue: const {'id': '18', 'name': '仓库1'},
     props: DicDataProp(label: 'name', value: 'id'),
   ),
   buildButtonWidget('调用组件的方法、获取值', onPressed: () {
     print(
         '调用组件的方法、获取值 = ${checkListWidgetKey.currentState?.selected}');
     checkListWidgetKey.currentState?.test();
   }),