使用API在android中填写调查问卷App。我使用可扩展的列表视图，基于API我得到问题类别（父）和问题（孩子）。 问题（孩子）可能会根据问题类型而改变。（目标类型：Radiobutton，是或否，文本类型：编辑文本）。
我已经静态创建了一个自定义布局XML，并在getChildView方法或可扩展列表视图中对该布局进行了充气。
但是当我展开/折叠可展开列表视图时，所有单选按钮选择都会出错。 例如：如果我回答第一类儿童，也可以回答其他类别。
请给我一个解决方案。我是否必须动态创建单选按钮/无线电组，这就足够了。 基于questionType我隐藏/显示小部件。 请找到以下代码。
我的HashMap值如下：
HashMap<String, ArrayList<QListModel>> expandableListDetail = new HashMap<>();
ArrayList包含：Question，QuestionType，QuestionId等
这是我的代码： 我的适配器类
import android.content.Context;
import android.graphics.Color;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context context;
private List<String> expandableListTitle;
private HashMap<String, ArrayList<QListModel>> expandableListDetail;
public ExpandableListAdapter(Context context, List<String> expandableListTitle, HashMap<String,
ArrayList<QListModel>> expandableListDetail) {
this.context = context;
this.expandableListTitle = expandableListTitle;
this.expandableListDetail = expandableListDetail;
}
@Override
public int getGroupCount() {
return this.expandableListTitle.size();
}
@Override
public int getChildrenCount(int listPosition) {
// return this.expandableListDetail.get(this.expandableListTitle.get(listPosition))
// .size();
Log.e("VCVCV",String.valueOf(this.expandableListDetail.get(this.expandableListTitle.get(listPosition)).size()));
return this.expandableListDetail.get(this.expandableListTitle.get(listPosition))
.size();
}
@Override
public Object getGroup(int listPosition) {
return this.expandableListTitle.get(listPosition);
}
@Override
public Object getChild(int listPosition, int expandedListPosition) {
return this.expandableListDetail.get(this.expandableListTitle.get(listPosition))
.get(expandedListPosition);
}
@Override
public long getGroupId(int listPosition) {
return listPosition;
}
@Override
public long getChildId(int listPosition, int expandedListPosition) {
return expandedListPosition;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public View getGroupView(int listPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String listTitle = (String) getGroup(listPosition);
if (convertView == null) {
LayoutInflater layoutInflater = (LayoutInflater) this.context.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.expand_parent, null);
}
TextView listTitleTextView = (TextView) convertView
.findViewById(R.id.groupText);
listTitleTextView.setText(listTitle);
return convertView;
}
@Override
public View getChildView(int listPosition, final int expandedListPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
QListModel expandedListText = (QListModel) getChild(listPosition, expandedListPosition);
Log.e("ChildQuestions",expandedListText.getqList());
if (convertView == null) {
LayoutInflater layoutInflater = (LayoutInflater) this.context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.expand_child_selection, null);
}
TextView expandedListTextView = (TextView) convertView.findViewById(R.id.childText);
EditText expandedListEditText = (EditText) convertView.findViewById(R.id.editTextAdditional);
expandedListTextView.setText(expandedListText.getqList());
RadioGroup rgp = (RadioGroup) convertView.findViewById(R.id.radioGroup);
//NotUsing
RadioButton radioYes=(RadioButton) convertView.findViewById(R.id.radioYes);
RadioButton radioNo=(RadioButton) convertView.findViewById(R.id.radioNo);
if (expandedListText.getqType().equals("Y/N")){
rgp.setVisibility(View.VISIBLE);
expandedListEditText.setVisibility(View.GONE);
}
else {
expandedListEditText.setVisibility(View.VISIBLE);
rgp.setVisibility(View.GONE);
}
return convertView;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
我的布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:paddingLeft="20dp"
android:layout_marginRight="20dp"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/childText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:textColor="@color/colorBlackLight"
android:text=""/>
<RadioGroup
android:id="@+id/radioGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="@+id/radioYes"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/colorBlackLight"
android:text="Yes"/>
<RadioButton
android:id="@+id/radioNo"
android:layout_marginLeft="20dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/colorBlackLight"
android:text="No"/>
</RadioGroup>
<EditText
android:id="@+id/editTextAdditional"
android:layout_width="match_parent"
android:padding="5dp"
android:textColor="@color/colorBlackLight"
android:layout_marginBottom="10dp"
android:layout_marginRight="20dp"
android:background="@color/colorFrameBLueLight"
android:textSize="12sp"
android:layout_height="wrap_content" />
</LinearLayout>
问题：如果我在所有类别项目的第一个类别中进行选择，我是否必须动态管理单选按钮和无线电组？ 如果是这样，我必须采用哪种方法。如果我在getChildView中创建它们，则每次扩展类别时都会调用它。因此以前的选择将不会被记住。 请给我一个解决方案。 提前谢谢。
答案 0 :(得分：1)
//代码
public class RecyclerViewQuest extends RecyclerView.Adapter<RecyclerViewQuest.MyViewHolder> {
private Context context;
private ArrayList<QuestModel> questModelArrayList;
private int position;
private ArrayList<Model> checkArrayList=new ArrayList<>();
private SparseIntArray mSelections,mDisabled;
private String temptitle="";
private CallbackInterface mCallbackInterface;
private ArrayList<QuestModel> answerArrayList= new ArrayList<>();
private ArrayList<ViewLayout> arrayList;
private HashMap<Integer,ArrayList<ViewLayout>> inputLayoutHashMap= new HashMap<>();
public interface CallbackInterface{
void onMethodCallback(QuestModel questModel,RecyclerViewQuest.RequestBack requestBack);
}
public interface RequestBack{
void onReceive(boolean status);
}
public RecyclerViewQuest(Context context, ArrayList<QuestModel> questModelArrayList,CallbackInterface mCallbackInterface) {
this.context = context;
this.questModelArrayList = questModelArrayList;
mSelections = new SparseIntArray();
mDisabled= new SparseIntArray();
this.mCallbackInterface=mCallbackInterface;
}
@Override
public RecyclerViewQuest.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.quest_recycler, parent, false);
RecyclerViewQuest.MyViewHolder holder = new RecyclerViewQuest.MyViewHolder(itemView,questModelArrayList,context);
return holder;
}
@Override
public void onBindViewHolder(final RecyclerViewQuest.MyViewHolder holder, final int position) {
final QuestModel questModel=questModelArrayList.get(position);
try {
if (questModelArrayList.get(position - 1).getSurvycat().equals(questModelArrayList.get(position).getSurvycat())) {
holder.categoryName.setVisibility(View.GONE);
}else {
holder.categoryName.setVisibility(View.VISIBLE);
holder.categoryName.setText(questModelArrayList.get(position).getSurvycat());
}
}catch (ArrayIndexOutOfBoundsException e){
holder.categoryName.setVisibility(View.VISIBLE);
holder.categoryName.setText(questModelArrayList.get(position).getSurvycat());
}
holder.categoryName.setText(questModel.getSurvycat());
if(questModel.getQformat().equals("Y/N")){
holder.radioGroupQuest.setTag(questModelArrayList.get(position));
holder.radioText.setText(questModel.getQlist());
holder.layoutRadio.setVisibility(View.VISIBLE);
holder.layoutEditText.setVisibility(View.GONE);
}else {
holder.editTextText.setText(questModel.getQlist());
holder.layoutRadio.setVisibility(View.GONE);
holder.layoutEditText.setVisibility(View.VISIBLE);
}
holder.radioText.setTypeface(holder.questList);
holder.editTextText.setTypeface(holder.questList);
holder.radioYes.setTypeface(holder.questList);
holder.radioNo.setTypeface(holder.questList);
holder.categoryName.setTypeface(holder.questCat);
holder.editTextAdd.setTypeface(holder.questList);
holder.submitTextview.setTypeface(holder.questCat);
holder.radioGroupQuest.setOnCheckedChangeListener(null);
//Check and Uncheck Radiobutton
holder.radioGroupQuest.clearCheck();
if(mSelections.get(position) > -1) {
holder.radioGroupQuest.check(mSelections.get(position));
}
//Enabling and disabling radio buttons
for(int i = 0; i < holder.radioGroupQuest.getChildCount(); i++){
holder.radioGroupQuest.getChildAt(i).setEnabled(true);
}
if(mDisabled.get(position) > 0) {
RadioGroup rg= (RadioGroup)holder.radioGroupQuest.findViewById(mDisabled.get(position));
for (int i = 0; i < rg.getChildCount(); i++) {
rg.getChildAt(i).setEnabled(false);
}
}
//Clearing and binding EditText
for (int i=0;i<holder.inputLayout.getChildCount();i++){
View v= holder.inputLayout.getChildAt(i);
if (v instanceof ImageView) {
holder.iconComplete.setVisibility(View.GONE);
}else if(v instanceof EditText){
holder.editTextAdd.setText("");
holder.editTextAdd.setHint("Comment here and click submit button");
}else if(v instanceof TextView){
holder.submitTextview.setVisibility(View.VISIBLE);
}
}
if(inputLayoutHashMap.size()>0){
try{
ViewLayout viewLayout=inputLayoutHashMap.get(position).get(0);
holder.submitTextview.setVisibility(View.GONE);
holder.editTextAdd.setText(viewLayout.getEditTextValue());
holder.editTextAdd.setEnabled(false);
holder.iconComplete.setVisibility(View.VISIBLE);
}
catch (NullPointerException ex){
Log.e("NUL","Null");
}
}
holder.submitTextview.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
ViewLayout viewLayout= new ViewLayout();
QuestModel questModelResult=questModelArrayList.get(position);
questModelResult.setResult(holder.editTextAdd.getText().toString());
questModelResult.setPosition(position);
viewLayout.setEditTextId(holder.editTextAdd.getId());
viewLayout.setEditTextValue(holder.editTextAdd.getText().toString());
viewLayout.setLayoutId(holder.layoutEditText.getId());
arrayList= new ArrayList<>();
arrayList.add(viewLayout);
mCallbackInterface.onMethodCallback(questModelResult, new RequestBack() {
@Override
public void onReceive(boolean status) {
holder.submitTextview.setVisibility(View.GONE);
holder.editTextAdd.setEnabled(false);
holder.iconComplete.setVisibility(View.VISIBLE);
inputLayoutHashMap.put(position,arrayList);
}
});
holder.radioGroupQuest.setTag(position);
}
});
holder.radioGroupQuest.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(final RadioGroup group, @IdRes int checkedId) {
RadioButton radioButton=(RadioButton) group.findViewById(checkedId);
mSelections.put(position, group.getCheckedRadioButtonId());
QuestModel questModelResult=questModelArrayList.get(position);
questModelResult.setResult(radioButton.getText().toString());
mCallbackInterface.onMethodCallback(questModelResult, new RequestBack() {
@Override
public void onReceive(boolean status) {
if(status){
mDisabled.put(position,group.getId());
for (int i = 0; i < group.getChildCount(); i++) {
group.getChildAt(i).setEnabled(false);
}
}
}
});
}
});
}
public ArrayList<QuestModel> getAnswerArrayList(){
return answerArrayList;
}
public class MyViewHolder extends RecyclerView.ViewHolder {
ArrayList<QuestModel> questModelArrayList= new ArrayList<>();
Context context;
private RadioGroup radioGroupQuest;
private RadioButton radioYes,radioNo;
private EditText editTextAdd;
private TextView categoryName,submitTextview,radioText,editTextText;
private RelativeLayout layoutRadio,layoutEditText;
private Typeface questList,questCat;
private ImageView iconComplete;
private LinearLayout inputLayout;
public MyViewHolder(View itemView, final ArrayList<QuestModel> questModelArrayList, Context context) {
super(itemView);
this.questModelArrayList=questModelArrayList;
this.context=context;
layoutRadio=(RelativeLayout)itemView.findViewById(R.id.radioLayout);
layoutEditText=(RelativeLayout)itemView.findViewById(R.id.editTextLayout);
radioGroupQuest=(RadioGroup) itemView.findViewById(R.id.radio_group_recycler);
radioYes=(RadioButton)itemView.findViewById(R.id.radioYes);
radioNo=(RadioButton)itemView.findViewById(R.id.radioNo);
inputLayout=(LinearLayout)itemView.findViewById(R.id.inputLayout);
categoryName=(TextView)itemView.findViewById(R.id.categoryName);
radioText=(TextView)itemView.findViewById(R.id.radioText);
editTextText=(TextView)itemView.findViewById(R.id.editTextText);
submitTextview=(TextView)itemView.findViewById(R.id.submitTextview);
radioYes=(RadioButton)itemView.findViewById(R.id.radioYes);
radioNo=(RadioButton)itemView.findViewById(R.id.radioNo);
iconComplete=(ImageView)itemView.findViewById(R.id.iconComplete);
editTextAdd=(EditText)itemView.findViewById(R.id.editTextAdd);
questList = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto_Light.ttf");
questCat = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto_Regular.ttf");
}
}
@Override
public int getItemCount() {
return questModelArrayList.size();
}
@Override
public int getItemViewType(int position) {
return super.getItemViewType(position);
}
@Override
public long getItemId(int position) {
return super.getItemId(position);
}
}
答案 1 :(得分：0)
使用viewholder或recyclerview，这是因为视图被重用，因此检索到相同的对象，使用sparseintarray来跟踪用户选择