が上記の値でRecyclerView

Question

内RADIOGROUPから前回のRadioButton値を取得することは私に上記のアイテムから同じ位置の値を与えます。だからこのケースでは私に "CH6"を与えます

このように私は "水"をチェックすると私に "CH4"を与えます。だからここ

は、事前に私のRecyclerView、

public class QuestionsAdapter extends 

    RecyclerView.Adapter<QuestionsAdapter.ViewHolder> { 

      List<String> names = new ArrayList<>(); 
      Context c; 
      String username; 
      Map<String,Object> map = new HashMap<>(); 
      ArrayList<QuestionData> questions = new ArrayList<>(); 



      public QuestionsAdapter(Context c) { 
       this.c = c; 
      } 

      public void updateQuestion(ArrayList<QuestionData> data){ 
       this.questions = data; 
       notifyDataSetChanged(); 
      } 
      public class ViewHolder extends RecyclerView.ViewHolder { 
       TextView q; 
       RadioButton r1; 
       RadioButton r2; 
       RadioButton r3; 
       RadioButton r4; 
       RadioGroup rg; 

       public ViewHolder(View itemView) { 
        super (itemView); 
        rg = (RadioGroup)itemView.findViewById(R.id.RGroup); 
        q = (TextView)itemView.findViewById(R.id.question); 
        r1 = (RadioButton)itemView.findViewById(R.id.no1); 
        r2 = (RadioButton)itemView.findViewById(R.id.no2); 
        r3 = (RadioButton)itemView.findViewById(R.id.no3); 
        r4 = (RadioButton)itemView.findViewById(R.id.no4); 


       } 
      } 


      @Override 
      public QuestionsAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
       View v = LayoutInflater.from (parent.getContext()).inflate (R.layout.qnalayout, parent, false); 
       return new ViewHolder(v); 



      } 

      @Override 
      public void onBindViewHolder(final ViewHolder holder, int position) { 
       final QuestionData qholder = questions.get(position); 

       String question= qholder.getQuestion(); 
       final String qid = qholder.getId(); 

       final ArrayList<String> options = new ArrayList<>(); 
       options.add(qholder.getO1()); 
       options.add(qholder.getO2()); 
       options.add(qholder.getO3()); 
       options.add(qholder.getO4()); 
       Collections.shuffle(options); 
       final String o1 = options.get(0); 
       String o2 = options.get(1); 
       String o3 = options.get(2); 
       String o4 = options.get(3); 
       final String[] answer = new String[1]; 
       holder.q.setText(question); 
       holder.r1.setText(o1); 
       holder.r2.setText(o2); 
       holder.r3.setText(o3); 
       holder.r4.setText(o4); 
       holder.rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { 
        @Override 
        public void onCheckedChanged(RadioGroup group, @IdRes int checkedId) { 
         switch (checkedId){ 
          case R.id.no1: 
           Toast.makeText(c, holder.r1.getText().toString(), Toast.LENGTH_SHORT).show(); 
           break; 
          case R.id.no2: 
           Toast.makeText(c, holder.r2.getText().toString(), Toast.LENGTH_SHORT).show(); 

           break; 
          case R.id.no3: 
           Toast.makeText(c, holder.r3.getText().toString(), Toast.LENGTH_SHORT).show(); 

           break; 
          case R.id.no4: 
           Toast.makeText(c, holder.r4.getText().toString(), Toast.LENGTH_SHORT).show(); 

           break; 
         } 
         RadioButton checked = (RadioButton)findViewById(checkedId); 
         answer[0] = checked.getText().toString(); 
         Toast.makeText(c, checked.getText().toString(), Toast.LENGTH_SHORT).show(); 
         map.put(qid,answer[0]); 
         System.out.println(map); 
        } 
       }); 

      } 


      @Override 
      public int getItemCount() { 
       if (questions!=null){ 
        return questions.size(); 

       }else { 
        return 0; 
       } 
      } 

     } 

感謝です！

RadioButton checked = (RadioButton)findViewById(checkedId); 

を実行します：代わりの

Answer 1

質問が正確に何であるか

RadioButton checked = (RadioButton) group.findViewById(checkedId);