flutter 中开关盒的替代或简单方法

Question

我有一个工作代码，它将获取一个索引并根据该索引构建一个小部件，但是我的代码使用 switch case 并且我必须手动对每个小部件进行编码是否有其他方法可以实现与下面 flutter 相同的效果

我在这里为每个小部件使用 getx controller，手动输入每个小部件是压倒性的

代码

Widget buildchoices(BuildContext context, int index) {
    if (kDebugMode) {
      print('building choice with index$index');
    }
    switch (index) {
      case 0:
        return animalChoices();
      case 1:
        return donation();
      case 2:
        return firstaid();
      case 3:
        return helpsearch();
      case 4:
        return serviceneeded();
      case 5:
        return transportation();
      case 6:
        return vehicleissue();
      case 7:
        return wellnesscheck();
      default:
        return const Text('Select one above ');
    }
  }
  // widgets
   Widget animalChoices() {
     BarController barController = Get.find();
     return SizedBox(
       height: 500,width: double.maxFinite,
       child: Column(
         children: [
           Expanded(
             child: ListView.builder(
               itemCount: animalslist.length,
               itemBuilder: (context, index) {
                 barController.ischecklist.clear();
                 for(int i=0;i<serviceneededlist.length;i++){
                   barController.ischecklist.add(false);
                 }
                 return TaskTile(indexofbox:index, checklist:animalslist);
               },
             ),
           ),
         ],
       ),
     );
   }
   Widget donation() {
     BarController barController = Get.find();
     return SizedBox(
       height: 500,width: double.maxFinite,
       child: Column(
         children: [
           Expanded(
             child: ListView.builder(
               itemCount: donationslist.length,
               itemBuilder: (context, index) {
                 barController.ischecklist.clear();
                 for(int i=0;i<serviceneededlist.length;i++){
                   barController.ischecklist.add(false);
                 }
                 return TaskTile(indexofbox: index,checklist:donationslist);
               },
             ),
           ),
         ],
       ),
     );
   }
   Widget helpsearch() {
     BarController barController = Get.find();
     return SizedBox(
       height: 500,width:double.maxFinite,
       child: Column(
         children: [
           Expanded(
             child: ListView.builder(
               itemCount: helpsearchlist.length,
               itemBuilder: (context, index) {
                 barController.ischecklist.clear();
                 for(int i=0;i<serviceneededlist.length;i++){
                   barController.ischecklist.add(false);
                 }
                 return TaskTile(indexofbox: index, checklist:helpsearchlist);
               },
             ),
           ),
         ],
       ),
     );
   }
   Widget firstaid() {
     BarController barController = Get.find();
     return SizedBox(
       height: 500,width: double.maxFinite,
       child: Column(
         children: [
           Expanded(
             child: ListView.builder(
               itemCount: firstaidlist.length,
               itemBuilder: (context, index) {
                 barController.ischecklist.clear();
                 for(int i=0;i<serviceneededlist.length;i++){
                   barController.ischecklist.add(false);
                 }
                 return TaskTile(indexofbox:index, checklist:firstaidlist);
               },
             ),
           ),
         ],
       ),
     );
   }
   Widget transportation() {
     BarController barController = Get.find();
     return SizedBox(
       height: 500,width:double.maxFinite,
       child: Column(
         children: [
           Expanded(
             child: ListView.builder(
               itemCount: transportationlist.length,
               itemBuilder: (context, index) {
                 barController.ischecklist.clear();
                 for(int i=0;i<serviceneededlist.length;i++){
                   barController.ischecklist.add(false);
                 }
                 return TaskTile(indexofbox:index, checklist:transportationlist);
               },
             ),
           ),
         ],
       ),
     );
   }
   Widget vehicleissue() {
     BarController barController = Get.find();
     return SizedBox(
       height: 500,width: double.maxFinite,
       child: Column(
         children: [
           Expanded(
             child: ListView.builder(
               itemCount: vehicleissuelist.length,
               itemBuilder: (context, index) {
                 barController.ischecklist.clear();
                 for(int i=0;i<serviceneededlist.length;i++){
                   barController.ischecklist.add(false);
                 }
                 return TaskTile(indexofbox: index,checklist:vehicleissuelist);
               },
             ),
           ),
         ],
       ),
     );
   }
   Widget wellnesscheck() {
     BarController barController = Get.find();
     return SizedBox(
       height: 500,width: double.maxFinite,
       child: Column(
         children: [
           Expanded(
             child: ListView.builder(
               itemCount: wellnesschecklist.length,
               itemBuilder: (context, index) {
                 barController.ischecklist.clear();
                 for(int i=0;i<serviceneededlist.length;i++){
                   barController.ischecklist.add(false);
                 }
                 return TaskTile(indexofbox:index, checklist:wellnesschecklist);
               },
             ),
           ),
         ],
       ),
     );
   }
   Widget serviceneeded() {
     BarController barController = Get.find();
     return SizedBox(
       height: 500,width: double.maxFinite,
       child: Column(
         children: [
           GetBuilder<BarController>(builder:(_)=>Expanded(
             child: ListView.builder(
               itemCount: serviceneededlist.length,
               itemBuilder: (context, index) {
                 barController.ischecklist.clear();
                 for(int i=0;i<serviceneededlist.length;i++){
                   barController.ischecklist.add(false);
                 }
                 return TaskTile(indexofbox:index, checklist:serviceneededlist);
               },
             ),
           ),)
         ],
       ),
     );
   }
 }

Answer 1

您可以通过这种方式避免代码重复。

 Widget buildchoices(BuildContext context, int index) {
    BarController barController = Get.find();
    var listOfLists = [
      animalChoicesList,
      donationList,
      firstaidList,
      helpsearchList,
      serviceneededList,
      transportationList,
      vehicleissueList,
      wellnesscheckList
    ];
    var selectedList = listOfLists[index];
    return SizedBox(
      height: 500,
      width: double.maxFinite,
      child: Column(
        children: [
          Expanded(
            child: ListView.builder(
              itemCount: selectedList.length,
              itemBuilder: (context, index) {
                barController.ischecklist.clear();
                for (int i = 0; i < serviceneededlist.length; i++) {
                  barController.ischecklist.add(false);
                }
                return TaskTile(indexofbox: index, checklist: selectedList);
              },
            ),
          ),
        ],
      ),
    );
  }