獲得增值的意見價值

Question

我有RadioPutton和複選框，在ViewPager下的片段內以編程方式添加。以下是我添加RadioButton /複選框的方法。

public class TeaserExam extends AppCompatActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     fab.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       //get all the checked values here 
      } 
     } 
    } 


    public class SectionsPagerAdapter extends FragmentPagerAdapter {  

     @Override 
     public Fragment getItem(int position) { 
      // getItem is called to instantiate the fragment for the given page. 
      // Return a PlaceholderFragment (defined as a static inner class below). 
      return PlaceholderFragment.newInstance(position + 1,questionList.get(position).getId(), 
        questionList.get(position).getQuestion(),questionList.get(position).getQuestionType(),questionList.get(position).getChoices()); 
     } 
    } 

    public static class PlaceholderFragment extends Fragment { 

     public static PlaceholderFragment newInstance(int number, int questionID, String question, int questionType, List<Choices> choices) { 
      PlaceholderFragment fragment = new PlaceholderFragment(); 

      ArrayList<Integer> choicesID = new ArrayList<>(); 
      ArrayList<String> choicesLabel = new ArrayList<>(); 
      for (int i = 0; i < choices.size(); i++){ 
       choicesID.add(i,choices.get(i).getId()); 
       choicesLabel.add(i,choices.get(i).getLabel()); 
      } 

      Bundle args = new Bundle(); 
      args.putInt(ARG_SECTION_NUMBER, number); 
      args.putInt("questionID", questionID); 
      args.putInt("questionType", questionType); 
      args.putInt("choicesSize", choices.size()); 
      ParcelableChoices parcelableChoices = new ParcelableChoices(choicesID,choicesLabel); 
      args.putParcelable("parcelableChoices", parcelableChoices); 

      fragment.setArguments(args); 

      return fragment; 
     } 

     @Override 
     public View onCreateView(LayoutInflater inflater, ViewGroup container, 
            Bundle savedInstanceState) { 
      View rootView = inflater.inflate(R.layout.fragment_teaser_exam, container, false); 

      int questionID = getArguments().getInt("questionID"); 
      int questionType = getArguments().getInt("questionType"); 
      int choicesSize = getArguments().getInt("choicesSize"); 
      ParcelableChoices parcelableChoices = getArguments().getParcelable("parcelableChoices"); 

      LinearLayout ll_choices = (LinearLayout)rootView.findViewById(R.id.ll_choices); 

      ArrayList<Integer> choicesIDs = parcelableChoices.getId(); 
      ArrayList<String> choicesLabels = parcelableChoices.getLabel(); 

      if (questionType == 2){ 
       //checkboxes 
       for (int i = 0; i < choicesSize; i++){ 
        CheckBox myChoices = new CheckBox(getContext()); 
        myChoices.setId(choicesIDs.get(i)); 
        myChoices.setText(choicesLabels.get(i)); 
        myChoices.setLayoutParams(new LinearLayout.LayoutParams(
              LinearLayout.LayoutParams.WRAP_CONTENT, 
              LinearLayout.LayoutParams.WRAP_CONTENT)); 

        ll_choices.addView(myChoices); 
       } 
      }else{ 

       //radio group 
       RadioGroup rg = new RadioGroup(getContext()); 
       rg.setOrientation(RadioGroup.VERTICAL); 
       for (int i = 0; i < choicesSize; i++){ 
        RadioButton myChoices = new RadioButton(getContext()); 
        myChoices.setId(choicesIDs.get(i)); 
        myChoices.setText(choicesLabels.get(i)); 
        myChoices.setLayoutParams(new LinearLayout.LayoutParams(
              LinearLayout.LayoutParams.WRAP_CONTENT, 
              LinearLayout.LayoutParams.WRAP_CONTENT)); 
        rg.addView(myChoices); 
       } 
       ll_choices.addView(rg); 
      } 

      return rootView; 
     } 
    } 
} 

問題是現在我不知道如何檢索選中的單選按鈕/複選框的值。當我點擊一個只出現在最後一頁的按鈕時，我想獲得所有選中的值。

由於所有的視圖都添加到ll_choices，有沒有什麼辦法可以得到所有視圖的id和值添加在ll_choices下？

Answer 1

當前你的變量是局部onCreate片段內。

讓他們的片段類的內部類字段，初始化它們裏面的onCreate，然後他們將可在整個片段類

Answer 2

直接回答你的問題是保持向其中添加編程控件的引用內。您可以使用成員字段變量而不是局部變量來執行此操作。

由於您正在添加動態視圖的列表，因此您應該瞭解有關ListView或RecyclerView的信息。這些是爲添加動態視圖而設計的。我還建議你將RadioButton和CheckBox分成兩個單獨的片段。然後該活動決定顯示哪個片段。