Состояние CheckBox в дочерних элементах ExpandableListView

Я вижу, у вас есть объект selectedNumbers, что это за коллекция? Возможно, имеет смысл иметь карту или список или некоторую коллекцию, основанную на чем-то более уникальном, например, на позиции группы и дочернего элемента. Тогда вы можете сделать это:

(EDIT: отредактировал код, чтобы убедиться, что checkedChangedListener не срабатывает) (EDIT 2 на основе обновления OP): вам, вероятно, не следует использовать карту строк для логических массивов. Вместо этого попробуйте это. Он довольно похож, но использует целые числа, которые будут более надежными для сравнения, чем строки.

...
HashMap<Integer, Integer> mCheckedStates; // assume initialized as you did
...

childViewHolder.mPhoneNumber.setText(numberText);
childViewHolder.mPhoneType.setText(typeText);
childViewHolder.mCheckBox.setOnCheckedChangeListener(null);
if (mCheckedStates.contains(groupPosition)) {
    int checkedChildren = mCheckedStates.get(groupPosition);
    if ((checkedChildren & (1 << childPosition)) ==  1) {
        childViewHolder.mCheckBox.setChecked(true);
    } else {
        //Edit: Cannot rely on checkbox being false on Recycle,
        childViewHolder.mCheckBox.setChecked(false);
    }
}
childViewHolder.mCheckBox.setOnCheckedChangeListener(this);

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

    // get group and child positions
    if (isChecked) {

        if (mCheckedStates.contains(groupPosition)) {
            // I'm using a bitmap to keep resources low, but it's not necessary to do it this way
            int childmap = mCheckedStates.get(groupPosition);
            childmap += (1 << childPosition);
            mCheckedStates.put(groupPosition, childmap);
        } else {
            mCheckedStates.put(groupPosition, (1 << childPosition));
        }
    } else {
        if (mCheckedStates.contains(groupPosition)) {
            int childmap = mCheckedStates.get(groupPosition);
            if (childmap == (1 << childPosition)) {
                mCheckedStates.remove(groupPosition);
            } else {
                childmap &= ~(1 << childPosition);
                mCheckedStates.put(groupPosition, childmap);
            }
        }
    }
}

}

ВОТ РАБОЧЕЕ РЕШЕНИЕ

Хорошо, хотя в Интернете есть много предложений о флажках в расширяемых списках, ни одно из них не сработало для меня. Мне удалось заставить его работать с помощью группы людей, особенно anddev84. Теперь я не собираюсь утверждать, что это идеально или надежно. Я просто утверждаю, что это работает для меня. Я тестировал на 2 устройствах, и я очень доволен этим.

Итак, я взял свой рабочий код, сократил его до основных частей и добавил кучу полезных комментариев, чтобы любой, кому он нужен, мог его использовать. Надеюсь, это работает так же хорошо для вас, как и для меня. Наслаждаться

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import android.annotation.SuppressLint;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.TextView;

// Eclipse wanted me to use a sparse array instead of my hashmaps, I just suppressed that suggestion
@SuppressLint("UseSparseArrays")
public class MyExpandableListAdapter extends BaseExpandableListAdapter {

    // Define activity context
    private Context mContext;

    /*
     * Here we have a Hashmap containing a String key 
     * (can be Integer or other type but I was testing 
     * with contacts so I used contact name as the key)
    */ 
    private HashMap<String, List<ExpListChildItems>> mListDataChild;

    // ArrayList that is what each key in the above 
    // hashmap points to
    private ArrayList<ExpListGroupItems> mListDataGroup;

    // Hashmap for keeping track of our checkbox check states
    private HashMap<Integer, boolean[]> mChildCheckStates;

    // Our getChildView & getGroupView use the viewholder patter
    // Here are the viewholders defined, the inner classes are
    // at the bottom
    private ChildViewHolder childViewHolder;
    private GroupViewHolder groupViewHolder;

    /*  
     *  For the purpose of this document, I'm only using a single
     *  textview in the group (parent) and child, but you're limited only
     *  by your XML view for each group item :)
    */ 
    private String groupText;
    private String childText

    /*  Here's the constructor we'll use to pass in our calling
     *  activity's context, group items, and child items
    */ 
    public MyExpandableListAdapter(Context context,
            ArrayList<ExpListGroupItems> listDataGroup, HashMap<String, List<ExpListChildItems>> listDataChild) {

        mContext = context;
        mListDataGroup = listDataGroup;
        mListDataChild = listDataChild;

        // Initialize our hashmap containing our check states here
        mChildCheckStates = new HashMap<Integer, boolean[]>();
    }

    @Override
    public int getGroupCount() {
        return mListDataGroup.size();
    }

    /*  
     * This defaults to "public object getGroup" if you auto import the methods
     * I always make a point to change it from "object" to whatever item
     * I passed through the constructor
    */ 
    @Override
    public ExpListGroupItems getGroup(int groupPosition) {
        return mListDataGroup.get(groupPosition);
    }

    @Override
    public long getGroupId(int groupPosition) {
        return groupPosition;
    }

    @Override
    public View getGroupView(int groupPosition, boolean isExpanded,
            View convertView, ViewGroup parent) {

        //  I passed a text string into an activity holding a getter/setter
        //  which I passed in through "ExpListGroupItems".
        //  Here is where I call the getter to get that text
        groupText = getGroup(groupPosition).getGroupText();

        if (convertView == null) {

            LayoutInflater inflater = (LayoutInflater) mContext
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.group_item, null);

            // Initialize the GroupViewHolder defined at the bottom of this document
            groupViewHolder = new GroupViewHolder();

            groupViewHolder.mGroupText = (TextView) convertView.findViewById(R.id.groupTextView);

            convertView.setTag(groupViewHolder);
        } else {

            groupViewHolder = (GroupViewHolder) convertView.getTag();
        }

        groupViewHolder.mGroupText.setText(groupText);

        return convertView;
    }

    @Override
    public int getChildrenCount(int groupPosition) {
        return mListDataChild.get(mListDataGroup.get(groupPosition).getMyText()).size();
    }

    /*  
     * This defaults to "public object getChild" if you auto import the methods
     * I always make a point to change it from "object" to whatever item
     * I passed through the constructor
    */ 
    @Override
    public ExpListChildItems getChild(int groupPosition, int childPosition) {
        return mListDataChild.get(mListDataGroup.get(groupPosition).getMyText()).get(childPosition);
    }

    @Override
    public long getChildId(int groupPosition, int childPosition) {
        return childPosition;
    }

    @Override
    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {

        final int mGroupPosition = groupPosition;
        final int mChildPosition = childPosition;

        //  I passed a text string into an activity holding a getter/setter
        //  which I passed in through "ExpListChildItems".
        //  Here is where I call the getter to get that text
        childText = getChild(mGroupPosition, mChildPosition).getChildText();

        if (convertView == null) {

            LayoutInflater inflater = (LayoutInflater) this.mContext
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.child_item, null);

            childViewHolder = new ChildViewHolder();

            childViewHolder.mChildText = (TextView) convertView
                    .findViewById(R.id.childTextView);

            childViewHolder.mCheckBox = (CheckBox) convertView
                    .findViewById(R.id.checkBox);

            convertView.setTag(R.layout.child_item, childViewHolder);

        } else {

            childViewHolder = (ChildViewHolder) convertView
                    .getTag(R.layout.child_item);
        }

        childViewHolder.mChildText.setText(childText);
            /* 
         * You have to set the onCheckChangedListener to null
         * before restoring check states because each call to 
         * "setChecked" is accompanied by a call to the 
         * onCheckChangedListener
        */ 
        childViewHolder.mCheckBox.setOnCheckedChangeListener(null);

        if (mChildCheckStates.containsKey(mGroupPosition)) {
            /*
             * if the hashmap mChildCheckStates<Integer, Boolean[]> contains
             * the value of the parent view (group) of this child (aka, the key),
             * then retrive the boolean array getChecked[]
            */
            boolean getChecked[] = mChildCheckStates.get(mGroupPosition);

            // set the check state of this position's checkbox based on the 
            // boolean value of getChecked[position]
            childViewHolder.mCheckBox.setChecked(getChecked[mChildPosition]);

        } else {

            /*
            * if the hashmap mChildCheckStates<Integer, Boolean[]> does not
            * contain the value of the parent view (group) of this child (aka, the key),
            * (aka, the key), then initialize getChecked[] as a new boolean array
            *  and set it's size to the total number of children associated with 
            *  the parent group
            */
            boolean getChecked[] = new boolean[getChildrenCount(mGroupPosition)];

            // add getChecked[] to the mChildCheckStates hashmap using mGroupPosition as the key
            mChildCheckStates.put(mGroupPosition, getChecked);

            // set the check state of this position's checkbox based on the 
            // boolean value of getChecked[position]
            childViewHolder.mCheckBox.setChecked(false);
        }

        childViewHolder.mCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {

                    @Override
                    public void onCheckedChanged(CompoundButton buttonView,
                            boolean isChecked) {

                        if (isChecked) {

                                boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
                                getChecked[mChildPosition] = isChecked;
                                mChildCheckStates.put(mGroupPosition, getChecked);

                        } else {

                                boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
                                getChecked[mChildPosition] = isChecked;
                                mChildCheckStates.put(mGroupPosition, getChecked);
                        }
                    }
                });

        return convertView;
    }

    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        return false;
    }

    @Override
    public boolean hasStableIds() {
        return false;
    }

    public final class GroupViewHolder {

        TextView mGroupText;
    }

    public final class ChildViewHolder {

        TextView mChildText;
        CheckBox mCheckBox;
    }
}

Я также стал жертвой той же проблемы и попробовал ваше решение, и теперь оно работает как шарм. Спасибо, приятель. :)

Я просто изменил код с помощью String вместо пользовательской модели домена для удобства других людей.

MainActivity.java

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.Toast;

public class MainActivity extends Activity {

List<String> groupList;
List<String> childList;
Map<String, List<String>> laptopCollection;
ExpandableListView expListView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Log.d("-Test Exapansion-", "Nai Yara");

    createGroupList();

    createCollection();

    expListView = (ExpandableListView) findViewById(R.id.laptop_list);

 final MyExpandableListAdapter expListAdapter = new  MyExpandableListAdapter
(getApplicationContext() , 
groupList, laptopCollection);
    expListView.setAdapter(expListAdapter);
    expListView.getHeaderViewsCount();

    //expListView.expandGroup(1);
    //expListView.expandGroup(2);

int numberOfHeaders = expListView.getExpandableListAdapter().getGroupCount();
    Log.d("-Test Exapansion-", "Number of Groups are:"+numberOfHeaders);

    for(int i = 0; i<numberOfHeaders; i++){
        expListView.expandGroup(i);
    }

    setGroupIndicatorToRight();

    expListView.setOnChildClickListener(new OnChildClickListener() {

        public boolean onChildClick(ExpandableListView parent, View v,
                int groupPosition, int childPosition, long id) {
            final String selected = (String) expListAdapter.getChild(
                    groupPosition, childPosition);
        Toast.makeText(getBaseContext(), selected, Toast.LENGTH_LONG)
                    .show();

            return true;
        }
    });
}

private void createGroupList() {
    groupList = new ArrayList<String>();
    groupList.add("HP");
    groupList.add("Dell");
    groupList.add("Lenovo");
    groupList.add("Sony");
    groupList.add("HCL");
    groupList.add("Samsung");
    groupList.add("HTC");
}

private void createCollection() {
    // preparing laptops collection(child)
    String[] hpModels = { "HP Pavilion G6-2014TX", "ProBook HP 4540",
            "HP Envy 4-1025TX" };
    String[] hclModels = { "HCL S2101", "HCL L2102", "HCL V2002" };
    String[] lenovoModels = { "IdeaPad Z Series", "Essential G Series",
            "ThinkPad X Series", "Ideapad Z Series" };
    String[] sonyModels = { "VAIO E Series", "VAIO Z Series",
            "VAIO S Series", "VAIO YB Series" };
    String[] dellModels = { "Inspiron", "Vostro", "XPS" };
    String[] samsungModels = { "NP Series", "Series 5", "SF Series" };
    String[] hTcModels = { "One", "One X", "Desire Series" };

    laptopCollection = new LinkedHashMap<String, List<String>>();

    for (String laptop : groupList) {
        if (laptop.equals("HP")) {
            loadChild(hpModels);
        } else if (laptop.equals("Dell"))
            loadChild(dellModels);
        else if (laptop.equals("Sony"))
            loadChild(sonyModels);
        else if (laptop.equals("HCL"))
            loadChild(hclModels);
        else if (laptop.equals("Samsung"))
            loadChild(samsungModels);
        else if (laptop.equals("HTC"))
            loadChild(hTcModels);
        else
            loadChild(lenovoModels);

        laptopCollection.put(laptop, childList);
    }
}

private void loadChild(String[] laptopModels) {
    childList = new ArrayList<String>();
    for (String model : laptopModels)
        childList.add(model);
}

private void setGroupIndicatorToRight() {
    /* Get the screen width */
    DisplayMetrics dm = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(dm);
    int width = dm.widthPixels;

    expListView.setIndicatorBounds(width - getDipsFromPixel(35), width
            - getDipsFromPixel(5));
}

// Convert pixel to dip
public int getDipsFromPixel(float pixels) {
    // Get the screen's density scale
    final float scale = getResources().getDisplayMetrics().density;
    // Convert the dps to pixels, based on density scale
    return (int) (pixels * scale + 0.5f);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    //getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}
}

MyExpandableListAdapter.java

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.Toast;

public class MainActivity extends Activity {

List<String> groupList;
List<String> childList;
Map<String, List<String>> laptopCollection;
ExpandableListView expListView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Log.d("-Test Exapansion-", "Nai Yara");

    createGroupList();

    createCollection();

expListView = (ExpandableListView) findViewById(R.id.laptop_list);
final MyExpandableListAdapter 
expListAdapter = 
new MyExpandableListAdapter(getApplicationContext()
, groupList, laptopCollection);
    expListView.setAdapter(expListAdapter);
    expListView.getHeaderViewsCount();



int numberOfHeaders = expListView.getExpandableListAdapter().getGroupCount();
    Log.d("-Test Exapansion-", "Number of Groups are:"+numberOfHeaders);

    for(int i = 0; i<numberOfHeaders; i++){
        expListView.expandGroup(i);
    }

    setGroupIndicatorToRight();

    expListView.setOnChildClickListener(new OnChildClickListener() {

        public boolean onChildClick(ExpandableListView parent, View v,
                int groupPosition, int childPosition, long id) {
            final String selected = (String) expListAdapter.getChild(
                    groupPosition, childPosition);
        Toast.makeText(getBaseContext(), selected, Toast.LENGTH_LONG)
                    .show();

            return true;
        }
    });
}

private void createGroupList() {
    groupList = new ArrayList<String>();
    groupList.add("HP");
    groupList.add("Dell");
    groupList.add("Lenovo");
    groupList.add("Sony");
    groupList.add("HCL");
    groupList.add("Samsung");
    groupList.add("HTC");
}

private void createCollection() {
    // preparing laptops collection(child)
    String[] hpModels = { "HP Pavilion G6-2014TX", "ProBook HP 4540",
            "HP Envy 4-1025TX" };
    String[] hclModels = { "HCL S2101", "HCL L2102", "HCL V2002" };
    String[] lenovoModels = { "IdeaPad Z Series", "Essential G Series",
            "ThinkPad X Series", "Ideapad Z Series" };
    String[] sonyModels = { "VAIO E Series", "VAIO Z Series",
            "VAIO S Series", "VAIO YB Series" };
    String[] dellModels = { "Inspiron", "Vostro", "XPS" };
    String[] samsungModels = { "NP Series", "Series 5", "SF Series" };
    String[] hTcModels = { "One", "One X", "Desire Series" };

    laptopCollection = new LinkedHashMap<String, List<String>>();

    for (String laptop : groupList) {
        if (laptop.equals("HP")) {
            loadChild(hpModels);
        } else if (laptop.equals("Dell"))
            loadChild(dellModels);
        else if (laptop.equals("Sony"))
            loadChild(sonyModels);
        else if (laptop.equals("HCL"))
            loadChild(hclModels);
        else if (laptop.equals("Samsung"))
            loadChild(samsungModels);
        else if (laptop.equals("HTC"))
            loadChild(hTcModels);
        else
            loadChild(lenovoModels);

        laptopCollection.put(laptop, childList);
    }
}

private void loadChild(String[] laptopModels) {
    childList = new ArrayList<String>();
    for (String model : laptopModels)
        childList.add(model);
}

private void setGroupIndicatorToRight() {
    /* Get the screen width */
    DisplayMetrics dm = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(dm);
    int width = dm.widthPixels;

    expListView.setIndicatorBounds(width - getDipsFromPixel(35), width
            - getDipsFromPixel(5));
}

// Convert pixel to dip
public int getDipsFromPixel(float pixels) {
    // Get the screen's density scale
    final float scale = getResources().getDisplayMetrics().density;
    // Convert the dps to pixels, based on density scale
    return (int) (pixels * scale + 0.5f);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    //getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}
}

Проблема в том, что вы используете позиции в качестве идентификаторов. Позиция не является идентификатором. Позиция может меняться, и позиция ребенка без групповой позиции не является уникальным идентификатором.

1. Сначала вам нужно создать новый HashMap, чтобы сохранить дочерний элемент CheckBoxState в ExpandablelistView.

2. Объявите HashMap в адаптере как подобное-

   private HashMap mChildCheckStates;// Создан новый HashMap

3. Следование коду, прошедшему в вашем адаптере

   cb.setOnCheckedChangeListener(null);
   
   if (mChildCheckStates.containsKey(mGroupPosition)) {
   
       boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
        cb.setChecked(getChecked[mChildPosition]);
   
   
   }else {
   
       boolean getChecked[] = new boolean[getChildrenCount(mGroupPosition)];
   
       mChildCheckStates.put(mGroupPosition, getChecked);
   
      cb.setChecked(false);
   
   
   }
   
    cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
   
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
   
            if (isChecked) {
   
                boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
                getChecked[mChildPosition] = isChecked;
                mChildCheckStates.put(mGroupPosition, getChecked);
   
                //Toast.makeText(mContext,"group-"+mGroupPosition+"child-"+mChildPosition,Toast.LENGTH_SHORT).show();
               // String value=mListDataChild[0];
   
                Toast.makeText(mContext,"-"+mListDataChild,Toast.LENGTH_SHORT).show();
   
   
            } else {
   
                boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
                getChecked[mChildPosition] = isChecked;
                mChildCheckStates.put(mGroupPosition, getChecked);
                Toast.makeText(mContext,"group-"+mGroupPosition+"child-"+mChildPosition,Toast.LENGTH_SHORT).show();
            }
        }
    });
   

4. cb - флажок.

Я надеюсь, что эта логика поможет всем, спасибо