java - 嵌套 RecyclerView 的列表内列表

Question

我陷入了一个循环条件，我在另一个 for 循环中使用 for 循环，以在嵌套的 recyclerview 中显示数据，我从 Json 响应中获取该数据，但我没有得到所需的解决方案，下面是我的代码，我还附加了我的结果输出并附加了所需的输出，如果有人知道解决方案，请帮助我。

我的代码在这里

 JSONArray jsonArray = jsonRootObject.getJSONArray("data");

 for(int i=0;i < jsonArray.length();i++){

       JSONObject object1  =jsonArray.getJSONObject(i);
       JSONArray jsonArrayRates = object1.getJSONArray("rates");
       Log.e("jsonArraySize",String.valueOf(jsonArrayRates.length()));
       String fuel_type = null;

       demoCarSectionList.clear();

       for (int j=0;j < jsonArrayRates.length();j++){
           JSONObject objectRates=jsonArrayRates.getJSONObject(j);                                
           access_Rate=objectRates.getString("access_rate");
           String carID=objectRates.getString("car_id");
           Log.e( "carIdInside" ,carID);
           amount= (rate_int * time_int);
           freeDriving= String.valueOf(distance_Car);
           demoCarSectionList.add(access_Rate);
       }

       Log.e( "value_inside" , demoCarSectionList.get(1));
       demoCarList.add((ArrayList<String>) demoCarSectionList);

 }




    Resulted output from above code-
    E/RateList: [12, 11.5, 11]
    E/carList: [[12, 11.5, 11]]
    E/RateList: [14, 10, 15]
    E/carList: [[14, 10, 15], [14, 10, 15]]
    E/RateList: [14, 13, 12]
    E/carList: [[14, 13, 12], [14, 13, 12], [14, 13, 12]]
    E/RateList: [14, 18, 19]
    E/carList: [[14, 18, 19], [14, 18, 19], [14, 18, 19], [14, 18, 19]]
    E/RateList: [15, 19, 10]
    E/carList: [[15, 19, 10], [15, 19, 10], [15, 19, 10], [15, 19, 10], 
    [15, 19, 10]]
    E/RateList: [14, 16, 12]
    E/carList: [[14, 16, 12], [14, 16, 12], [14, 16, 12], [14, 16, 12], 
    [14, 16, 12], [14, 16, 12]]
    E/RateList: [14, 13, 12]
    E/carList: [[14, 13, 12], [14, 13, 12], [14, 13, 12], [14, 13, 12], 
    [14, 13, 12], [14, 13, 12], [14, 13, 12]]
    E/RateList: [15, 14, 13]
    E/carList: [[15, 14, 13], [15, 14, 13], [15, 14, 13], [15, 14, 13], 
    [15, 14, 13], [15, 14, 13], [15, 14, 13], [15, 14, 13]]
    E/RateList: [13, 12, 11]
    E/carList: [[13, 12, 11], [13, 12, 11], [13, 12, 11], [13, 12, 11], 
    [13, 12, 11], [13, 12, 11], [13, 12, 11], [13, 12, 11], [13, 12, 11]]
    E/RateList: [14, 13, 12]
    E/carList: [[14, 13, 12], [14, 13, 12], [14, 13, 12], [14, 13, 12], 
    [14, 13, 12], [14, 13, 12], [14, 13, 12], [14, 13, 12], [14, 13, 12], 
    [14, 13, 12]]
    E/RateList: [13, 12, 10]
    E/carList: [[13, 12, 10], [13, 12, 10], [13, 12, 10], [13, 12, 10], 
    [13, 12, 10], [13, 12, 10], [13, 12, 10], [13, 12, 10], [13, 12, 10], 
    [13, 12, 10], [13, 12, 10]]



   Required output-
   E/RateList: [12, 11.5, 11]
   E/carList: [[12, 11.5, 11]]
   E/RateList: [14, 10, 15]
   E/carList: [[12, 11.5, 11], [14, 10, 15]]
   E/RateList: [14, 13, 12]
   E/carList: [[12, 11.5, 11], [14, 10, 15], [14, 13, 12]]
   E/RateList: [14, 18, 19]
   E/carList: [[12, 11.5, 11], [14, 10, 15], [14, 13, 12], [14, 18, 19]]
   E/RateList: [15, 19, 10]
   E/carList: [[12, 11.5, 11], [14, 10, 15], [14, 13, 12], [14, 18, 19], 
   [15, 19, 10]]
   E/RateList: [14, 16, 12]
   E/carList: [[12, 11.5, 11], [14, 10, 15], [14, 13, 12], [14, 18, 19], 
   [15, 19, 10], [14, 16, 12]]
   E/RateList: [14, 13, 12]
   E/carList: [[12, 11.5, 11], [14, 10, 15], [14, 13, 12], [14, 18, 19], 
   [15, 19, 10], [14, 16, 12], [14, 13, 12]]
   E/RateList: [15, 14, 13]
   E/carList: [[12, 11.5, 11], [14, 10, 15], [14, 13, 12], [14, 18, 19], 
   [15, 19, 10], [14, 16, 12], [14, 13, 12], [15, 14, 13]]
   E/RateList: [13, 12, 11]
   E/carList: [[12, 11.5, 11], [14, 10, 15], [14, 13, 12], [14, 18, 19], 
   [15, 19, 10], [14, 16, 12], [14, 13, 12], [15, 14, 13], [13, 12, 11]]
   E/RateList: [14, 13, 12]
   E/carList: [[12, 11.5, 11], [14, 10, 15], [14, 13, 12], [14, 18, 19], 
   [15, 19, 10], [14, 16, 12], [14, 13, 12], [15, 14, 13], [13, 12, 11], 
   [14, 13, 12]]
   E/RateList: [13, 12, 10]
   E/carList: [[12, 11.5, 11], [14, 10, 15], [14, 13, 12], [14, 18, 19], 
   [15, 19, 10], [14, 16, 12], [14, 13, 12], [15, 14, 13], [13, 12, 11], 
   [14, 13, 12], [13, 12, 10]]

Answer 1

经过 2-3 天的努力，我得到了答案，这一切都与列表的初始化有关，这是一个很小的错误，demoCarSectionList 需要在本地初始化，以便它会更新循环的每个索引的列表。

代码应该是这样的

    JSONArray jsonArray = jsonRootObject.getJSONArray("data");

    for(int i=0;i < jsonArray.length();i++){

   JSONObject object1  =jsonArray.getJSONObject(i);
   JSONArray jsonArrayRates = object1.getJSONArray("rates");
   Log.e("jsonArraySize",String.valueOf(jsonArrayRates.length()));
   String fuel_type = null;

   demoCarSectionList= new ArrayList<>();
   demoCarSectionList.clear();

   for (int j=0;j < jsonArrayRates.length();j++){
       JSONObject objectRates=jsonArrayRates.getJSONObject(j);                                
       access_Rate=objectRates.getString("access_rate");
       String carID=objectRates.getString("car_id");
       Log.e( "carIdInside" ,carID);
       amount= (rate_int * time_int);
       freeDriving= String.valueOf(distance_Car);
       demoCarSectionList.add(access_Rate);
   }

   Log.e( "value_inside" , demoCarSectionList.get(1));
   demoCarList.add((ArrayList<String>) demoCarSectionList);

}