expandablelistview的childPosition

expandablelistview的childPosition

本文介绍了是它可以改变expandablelistview的childPosition ID?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

只想知道如果它是可以改变expandablelistview的childPosition的id

因为我想给childPosition ID更改为我的类别ID。

这是我的DataChild,我已经得到类的名字,但我也希望得到的类别编号。我该怎么做呢?

 列表<串GT;类别=新的ArrayList<串GT;();
            的for(int i = 0; I< categories.length();我++){
                JSONObject的C = categories.getJSONObject(I)
                字符串categories_name = c.getString(TAG_NAME);
                字符串categories_id = c.getString(TAG_ID);                CATEGORY.add(categories_name);
            }

这是我的setOnChildClickListener在那里我得到childPosition。

  //列表视图儿童点击监听器
                expListView.setOnChildClickListener(新ExpandableListView.OnChildClickListener(){                    @覆盖
                    公共布尔onChildClick(ExpandableListView父视图V,
                                                INT groupPosition,诠释childPosition,长ID){
                        // TODO自动生成方法存根
                        Toast.makeText(
                                getActivity(),
                                listDataHeader.get(groupPosition)
                                        +:
                                        + listDataChild.get(
                                        listDataHeader.get(groupPosition))。得到(
                                        childPosition),Toast.LENGTH_SHORT)
                                。显示();
                        返回false;
                    }
                });

这是完整的code

 包com.example.administrator.mosbeau;进口android.app.FragmentManager;
进口android.os.AsyncTask;
进口android.support.v7.app.ActionBarActivity;
进口android.app.Activity;
进口android.support.v7.app.ActionBar;
进口android.support.v4.app.Fragment;
进口android.support.v7.app.ActionBarDrawerToggle;
进口android.support.v4.view.GravityCompat;
进口android.support.v4.widget.DrawerLayout;
进口android.content.Shared preferences;
进口android.content.res.Configuration;
进口android.os.Bundle;
。进口的Andr​​oid preference preferenceManager。
进口android.view.LayoutInflater;
进口android.view.Menu;
进口android.view.MenuInflater;
进口android.view.MenuItem;
进口android.view.View;
进口android.view.ViewGroup;
进口android.widget.ExpandableListView;
进口android.widget.ListAdapter;
进口android.widget.ListView;
进口android.widget.SimpleAdapter;
进口android.widget.Toast;进口org.apache.http.HttpEntity;
进口org.apache.http.Htt presponse;
进口org.apache.http.client.methods.HttpPost;
进口org.apache.http.impl.client.DefaultHttpClient;
进口org.apache.http.params.BasicHttpParams;
进口org.json.JSONArray;
进口org.json.JSONException;
进口org.json.JSONObject;进口java.io.BufferedReader中;
进口的java.io.InputStream;
进口java.io.InputStreamReader中;
进口的java.util.ArrayList;
进口的java.util.HashMap;
进口的java.util.List;/ **
 *用于管理并导航抽屉presentation互动片段。
 *请参阅的< A HREF =htt​​ps://developer.android.com/design/patterns/navigation-drawer.html#Interaction>
 *设计准则< / A>在这里实施的行为的一个完整的解释。
 * /
公共类NavigationDrawerFragment扩展片段{    / **
     *请记住所选项目的位置。
     * /
    私有静态最后弦乐STATE_SELECTED_POSITION =selected_navigation_drawer_position;    / **
     *每设计指南,您应该手动上展示推出的抽屉里,直到用户
     *扩展它。这种共享preference跟踪此。
     * /
    私有静态最后弦乐preF_USER_LEARNED_DRAWER =navigation_drawer_learned;    / **
     *一个指向当前回调实例(活动)。
     * /
    私人NavigationDrawerCallbacks mCallbacks;    / **
     *是关系操作栏中的导航抽屉助手组件。
     * /
    私人ActionBarDrawerToggle mDrawerToggle;    私人DrawerLayout mDrawerLayout;
    私人的ListView mDrawerListView;
    私人查看mFragmentContainerView;    私人INT mCurrentSelectedPosition = 0;
    私人布尔mFromSavedInstanceState;
    私人布尔mUserLearnedDrawer;    串myJSON;
    私有静态最后弦乐TAG_RESULTS =结果;
    私有静态最后弦乐TAG_ID =categories_id;
    私有静态最后弦乐TAG_NAME =categories_name;
    JSONArray类= NULL;
    公共NavigationDrawerFragment(){
    }    布尔InternetAvailable = FALSE;
    Seocnd detectconnection;    @覆盖
    公共无效的onCreate(捆绑savedInstanceState){
        super.onCreate(savedInstanceState);        //读取在该标志指示用户是否已经证实的认识
        //抽屉里。详情请参阅preF_USER_LEARNED_DRAWER。
        共享preferences SP = preferenceManager.getDefaultShared preferences(getActivity());
        mUserLearnedDrawer = sp.getBoolean(preF_USER_LEARNED_DRAWER,FALSE);        如果(savedInstanceState!= NULL){
            mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
            mFromSavedInstanceState = TRUE;
        }        //选择任一默认项(0)或最后选择的项目。
        选择信息(mCurrentSelectedPosition);    }    @覆盖
    公共无效onActivityCreated(捆绑savedInstanceState){
        super.onActivityCreated(savedInstanceState);
        //表明该片段想影响的一组操作栏中的行动。
        setHasOptionsMenu(真);
    }    ExpandableListAdapter listAdapter;
    ExpandableListView expListView;
    清单<串GT; listDataHeader;
    HashMap的<字符串列表<串GT;> listDataChild;    @覆盖
    公共查看onCreateView(LayoutInflater充气器,容器的ViewGroup,
                             捆绑savedInstanceState){        查看fragmentView = inflater.inflate(
                R.layout.fragment_navigation_drawer,集装箱,FALSE);
        / * mDrawerListView =(ListView控件)fragmentView.findViewById(R.id.listView);        // mDrawerListView =(ListView控件)inflater.inflate(
                //R.layout.fragment_navigation_drawer,集装箱,FALSE);
        mDrawerListView.setOnItemClickListener(新AdapterView.OnItemClickListener(){
            @覆盖
            公共无效onItemClick(适配器视图<>母公司,观景,INT位置,长的id){
                选择信息(位置);
            }
        });
        mDrawerListView.setAdapter(新ArrayAdapter<串GT;(
                getActionBar()。getThemedContext(),
                android.R.layout.simple_list_item_activated_1,
                android.R.id.text1,
                新的String [] {
                        的getString(R.string.title_home)
                        的getString(R.string.title_category)
                        的getString(R.string.title_myaccount)
                        的getString(R.string.title_referafriend)
                        的getString(R.string.title_about)
                        的getString(R.string.title_privacypocity)
                        的getString(R.string.title_shippingterms)
                        的getString(R.string.title_contactus)
                }));
        mDrawerListView.setItemChecked(mCurrentSelectedPosition,真实); * /        //获取列表视图
        expListView =(ExpandableListView)fragmentView.findViewById(R.id.lvExp);        // preparing列表数据
        // prepareListData();        detectconnection =新Seocnd(getActivity());
        InternetAvailable = detectconnection.InternetConnecting();
        如果(InternetAvailable){
            的getData();
        }其他{
            选择信息(100);
        }
        返回fragmentView;
    }
    公共无效的getData(){
        类GetDataJSON扩展的AsyncTask<弦乐,太虚,字符串> {            @覆盖
            保护字符串doInBackground(字符串... PARAMS){
                DefaultHttpClient的HttpClient =新DefaultHttpClient(新BasicHttpParams());
                HttpPost httppost =新HttpPost(http://joehamirbalabadan.com/android/android/categories.php);                //取决于你的Web服务
                httppost.setHeader(内容类型,应用/ JSON);                为InputStream的InputStream = NULL;
                字符串结果= NULL;
                尝试{
                    HTT presponse响应= httpclient.execute(httppost);
                    HttpEntity实体= response.getEntity();                    的InputStream = entity.getContent();
                    // JSON默认为UTF-8
                    读者的BufferedReader =新的BufferedReader(新的InputStreamReader(InputStream中,UTF-8),8);
                    StringBuilder的SB =新的StringBuilder();                    串线= NULL;
                    而((行= reader.readLine())!= NULL)
                    {
                        sb.append(行+\\ n);
                    }
                    结果= sb.toString();
                }赶上(例外五){
                    //哎呀
                }
                最后{
                    尝试{如果(InputStream的!= NULL)inputStream.close();}赶上(例外挤){}
                }
                返回结果;
            }            @覆盖
            保护无效onPostExecute(字符串结果){
                myJSON =结果;
                prepareListData();                listAdapter =新ExpandableListAdapter(getActivity(),listDataHeader,listDataChild);                //设置列表适配器
                expListView.setAdapter(listAdapter);                //列表视图组单击监听器
                expListView.setOnGroupClickListener(新ExpandableListView.OnGroupClickListener(){                    @覆盖
                    公共布尔onGroupClick(ExpandableListView父视图V,
                                                INT groupPosition,长ID){
            /*Toast.makeText(getActivity(),
            集团已点击+ listDataHeader.get(groupPosition)
            Toast.LENGTH_SHORT).show(); * /
                        如果(groupPosition == 1){
                            返回false;
                        }其他{
                            选择信息(groupPosition);
                            返回true;
                        }
                    }
                });                //列表视图儿童点击监听器
                expListView.setOnChildClickListener(新ExpandableListView.OnChildClickListener(){                    @覆盖
                    公共布尔onChildClick(ExpandableListView父视图V,
                                                INT groupPosition,诠释childPosition,长ID){
                        // TODO自动生成方法存根
                        Toast.makeText(
                                getActivity(),
                                listDataHeader.get(groupPosition)
                                        +:
                                        + listDataChild.get(
                                        listDataHeader.get(groupPosition))。得到(
                                        childPosition),Toast.LENGTH_SHORT)
                                。显示();
                        返回false;
                    }
                });
            }
        }
        GetDataJSON G =新GetDataJSON();
        g.execute();
    }    保护无效prepareListData(){
        尝试{
            JSONObject的jsonObj =新的JSONObject(myJSON);
            类别= jsonObj.getJSONArray(TAG_RESULTS);            listDataHeader =新的ArrayList<串GT;();
            listDataChild =新的HashMap<字符串列表<串GT;>();            //添加组数据
            listDataHeader.add(HOME);
            listDataHeader.add(类别);
            listDataHeader.add(我的帐户);
            listDataHeader.add(推荐好友);
            listDataHeader.add(关于);
            listDataHeader.add(隐私保护政策);
            listDataHeader.add(运送条款);
            listDataHeader.add(联系我们);            清单<串GT;类别=新的ArrayList<串GT;();
            的for(int i = 0; I< categories.length();我++){
                JSONObject的C = categories.getJSONObject(I)
                字符串categories_name = c.getString(TAG_NAME);
                字符串categories_id = c.getString(TAG_ID);                CATEGORY.add(categories_name);
            }            listDataChild.put(listDataHeader.get(1)类); //头,儿童数据        }赶上(JSONException E){
            e.printStackTrace();
        }    }
    / *
     * preparing列表数据
     * /
    / *私人无效prepareListData(){
        listDataHeader =新的ArrayList<串GT;();
        listDataChild =新的HashMap<字符串列表<串GT;>();        //添加组数据
        listDataHeader.add(HOME);
        listDataHeader.add(类别);
        listDataHeader.add(我的帐户);
        listDataHeader.add(推荐好友);
        listDataHeader.add(关于);
        listDataHeader.add(隐私保护政策);
        listDataHeader.add(运送条款);
        listDataHeader.add(联系我们);        //添加子数据
        清单<串GT;类别=新的ArrayList<串GT;();
        CATEGORY.add(类1);
        CATEGORY.add(第二类);
        CATEGORY.add(第三类);
        CATEGORY.add(类别4);
        CATEGORY.add(5类);
        listDataChild.put(listDataHeader.get(1)类); //头,儿童数据
} * /    公共布尔isDrawerOpen(){
        返回mDrawerLayout = NULL&放大器;!&安培; mDrawerLayout.isDrawerOpen(mFragmentContainerView);
    }    / **
     *这个片段的用户必须调用这个方法来设置导航抽屉相互作用。
     *
     * @参数fragmentId Android的:在它的活动的布局这个片段的ID。
     * @参数drawerLayout包含此片段的UI的DrawerLayout。
     * /
    公共无效设置(INT fragmentId,DrawerLayout drawerLayout){
        mFragmentContainerView = getActivity()findViewById(fragmentId)。
        mDrawerLayout = drawerLayout;        //抽屉打开时设置覆盖的主要内容自定义阴影
        mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,GravityCompat.START);
        //设置抽屉的列表视图与项目,然后点击监听器        动作条动作条= getActionBar();
        actionBar.setDisplayHomeAsUpEnabled(真);
        actionBar.setHomeButtonEnabled(真);        // ActionBarDrawerToggle联系在一起的适当交互
        //抽屉式导航栏和操作栏的程序图标之间。
        mDrawerToggle =新ActionBarDrawerToggle(
                getActivity()/ *主机活动* /
                mDrawerLayout,/ * DrawerLayout对象* /
                R.string.navigation_drawer_open,/ *开放抽屉的描述可访问* /
                R.string.navigation_drawer_close / *关闭抽屉的描述可访问* /
        ){
            @覆盖
            公共无效onDrawerClosed(查看drawerView){
                super.onDrawerClosed(drawerView);
                如果(!isAdded()){
                    返回;
                }                。getActivity()supportInvalidateOptionsMenu();在prepareOptionsMenu //调用()
            }            @覆盖
            公共无效onDrawerOpened(查看drawerView){
                super.onDrawerOpened(drawerView);
                如果(!isAdded()){
                    返回;
                }                如果(!mUserLearnedDrawer){
                    //用户手动打开抽屉;该标志存储prevent自动显示
                    //在未来自动导航的抽屉里。
                    mUserLearnedDrawer = TRUE;
                    共享preferences SP = preferenceManager
                            .getDefaultShared preferences(getActivity());
                    。sp.edit()putBoolean(preF_USER_LEARNED_DRAWER,真实)。适用();
                }                。getActivity()supportInvalidateOptionsMenu();在prepareOptionsMenu //调用()
            }
        };        //如果用户没有学习关于抽屉,打开它给他们介绍的抽屉里,
        //每个抽屉式导航栏的设计指南。
        如果(mUserLearnedDrawer&安培;!&安培;!mFromSavedInstanceState){
            mDrawerLayout.openDrawer(mFragmentContainerView);
        }        //推迟code依赖于previous实例状态的恢复。
        mDrawerLayout.post(新的Runnable(){
            @覆盖
            公共无效的run(){
                mDrawerToggle.syncState();
            }
        });        mDrawerLayout.setDrawerListener(mDrawerToggle);
    }    私人无效选择信息(INT位置){
        mCurrentSelectedPosition =位置;
        如果(mDrawerListView!= NULL){
            mDrawerListView.setItemChecked(位置,真正的);
        }
        如果(mDrawerLayout!= NULL){
            mDrawerLayout.closeDrawer(mFragmentContainerView);
        }
        如果(mCallbacks!= NULL){
            mCallbacks.onNavigationDrawerItemSelected(位置);
        }
    }    @覆盖
    公共无效onAttach(活动活动){
        super.onAttach(活动);
        尝试{
            mCallbacks =(NavigationDrawerCallbacks)活性;
        }赶上(抛出ClassCastException E){
            抛出新ClassCastException异常(活动必须实现NavigationDrawerCallbacks。);
        }
    }    @覆盖
    公共无效onDetach(){
        super.onDetach();
        mCallbacks = NULL;
    }    @覆盖
    公共无效的onSaveInstanceState(捆绑outState){
        super.onSaveInstanceState(outState);
        outState.putInt(STATE_SELECTED_POSITION,mCurrentSelectedPosition);
    }    @覆盖
    公共无效onConfigurationChanged(配置NEWCONFIG){
        super.onConfigurationChanged(NEWCONFIG);
        //转发新配置抽屉切换组件。
        mDrawerToggle.onConfigurationChanged(NEWCONFIG);
    }    @覆盖
    公共无效onCreateOptionsMenu(菜单菜单,MenuInflater气筒){
        //如果抽屉被打开,显示在操作栏中的应用程序的全球行动。也可以看看
        // showGlobalContextActionBar,控制操作栏的左上角区域。
        如果(mDrawerLayout =空&放大器;!&放大器; isDrawerOpen()){
            inflater.inflate(R.menu.global,菜单);
            showGlobalContextActionBar();
        }
        super.onCreateOptionsMenu(菜单,充气器);
    }    @覆盖
    公共布尔onOptionsItemSelected(菜单项项){
        如果(mDrawerToggle.onOptionsItemSelected(项目)){
            返回true;
        }        如果(item.getItemId()== R.id.action_example){
            Toast.makeText(getActivity(),示例行动,Toast.LENGTH_SHORT).show();
            返回true;
        }        返回super.onOptionsItemSelected(项目);
    }    / **
     *每导航抽屉式设计的指导方针,更新操作栏,显示全球应用
     *语境,而不仅仅是什么是在当前屏幕。
     * /
    私人无效showGlobalContextActionBar(){
        动作条动作条= getActionBar();
        actionBar.setDisplayShowTitleEnabled(真);
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
        actionBar.setTitle(R.string.app_name);
    }    私有动作条getActionBar(){
        返回((ActionBarActivity)getActivity())getSupportActionBar();
    }    / **
     *回调接口,使用这个片段的所有活动必须实现。
     * /
    公共静态界面NavigationDrawerCallbacks {
        / **
         *当选择导航抽屉项目时调用。
         * /
        无效onNavigationDrawerItemSelected(INT位置);
    }
}

ExpandableListAdapter.java

 包com.example.administrator.mosbeau;/ **
 *创建者管理员在2015年9月21日。
 * /进口android.content.Context;
进口android.graphics.Typeface;
进口android.view.LayoutInflater;
进口android.view.View;
进口android.view.ViewGroup;
进口android.widget.BaseExpandableListAdapter;
进口android.widget.TextView;进口的java.util.HashMap;
进口的java.util.List;公共类ExpandableListAdapter扩展BaseExpandableListAdapter {    私人语境_context;
    私人列表<串GT; _listDataHeader; //头标题
    //子数据头标题格式,标题子
    私人的HashMap<字符串列表<串GT;> _listDataChild;    公共ExpandableListAdapter(上下文的背景下,列表与LT;弦乐> listDataHeader,
                                 HashMap的<字符串列表<串GT;> listChildData){
        this._context =背景;
        this._listDataHeader = listDataHeader;
        this._listDataChild = listChildData;
    }    @覆盖
    公共对象getChild(INT groupPosition,诠释childPosititon){
        返回this._listDataChild.get(this._listDataHeader.get(groupPosition))
                获得(childPosititon);
    }    @覆盖
    众长getChildId(INT groupPosition,诠释childPosition){
        返回childPosition;
    }    @覆盖
    公共查看getChildView(INT groupPosition,最终诠释childPosition,
                             布尔isLastChild,查看convertView,父母的ViewGroup){        最后弦乐childText =(字符串)getChild(groupPosition,childPosition);        如果(convertView == NULL){
            LayoutInflater infalInflater =(LayoutInflater)this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.list_item,NULL);
        }        TextView的txtListChild =(TextView中)convertView
                .findViewById(R.id.lblListItem);        txtListChild.setText(childText);
        返回convertView;
    }    @覆盖
    公众诠释getChildrenCount(INT groupPosition){
        返回this._listDataChild.get(this._listDataHeader.get(groupPosition))
                。尺寸()​​;
    }    @覆盖
    公共对象getGroup(INT groupPosition){
        返回this._listDataHeader.get(groupPosition);
    }    @覆盖
    公众诠释getGroupCount(){
        返回this._listDataHeader.size();
    }    @覆盖
    众长getGroupId(INT groupPosition){
        返回groupPosition;
    }    @覆盖
    公共查看getGroupView(INT groupPosition,布尔isExpanded,
                             查看convertView,父母的ViewGroup){
        字符串headerTitle =(字符串)getGroup(groupPosition);
        如果(convertView == NULL){
            LayoutInflater infalInflater =(LayoutInflater)this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.list_group,NULL);
        }        TextView的lblListHeader =(TextView中)convertView
                .findViewById(R.id.lblListHeader);
        lblListHeader.setTypeface(NULL,Typeface.BOLD);
        lblListHeader.setText(headerTitle);        返回convertView;
    }    @覆盖
    公共布尔hasStableIds(){
        返回false;
    }    @覆盖
    公共布尔isChildSelectable(INT groupPosition,诠释childPosition){
        返回true;
    }
}

新问题

我改变我的onChildClick这里是code

 公共布尔onChildClick(ExpandableListView父视图V,
                            INT groupPosition,诠释childPosition,长ID){
    // TODO自动生成方法存根    串头= listDataHeader.get(groupPosition);
    子类= listDataChild.get(头)获得(childPosition);    // child.name拿到名
    // child.id拿到ID
    //Toast.makeText(getActivity(),\"ChildNme:+ child.name +childID的:+ child.id,Toast.LENGTH_SHORT).show();
    选择信息(1);    返回false;
}

选择信息(1)会在我的MainActivity。

在code,这部分

 否则,如果(位置== 1){
    fragmentManager.beginTransaction()
            .replace(R.id.container,CategoryFragment.newInstance())
            。承诺();
}

那么CategoryFragment就会显示出来。

现在

我的问题是如何通过ChildName和childID的,在previous问题?

解决

我想的ChildName和childID的传递给我的CategoryFragment

 包com.example.administrator.mosbeau;进口android.app.Activity;
进口android.app.Fragment;
进口android.os.Bundle;
进口android.support.annotation.Nullable;
进口android.view.LayoutInflater;
进口android.view.View;
进口android.view.ViewGroup;/ **
 *创建者管理员在2015年9月18日。
 * /
公共类CategoryFragment扩展片段{    公共静态的newInstance CategoryFragment(){
        CategoryFragment片段=新CategoryFragment();
        返回片段;
    }    公共CategoryFragment(){
    }    @Nullable
    @覆盖
    公共查看onCreateView(LayoutInflater充气器,容器的ViewGroup,捆绑savedInstanceState){
        查看rootView = inflater.inflate(R.layout.categorylayout,集装箱,FALSE);        。getActivity()invalidateOptionsMenu();        返回rootView;
    }    @覆盖
    公共无效onAttach(活动活动){
        super.onAttach(活动);
        ((MainActivity)活性).onSectionAttached(2);
    }
}


解决方案

首先,你需要创建模型类(可以说类),包含名称 ID

 公共类分类{
    公共字符串名称;
    公共字符串ID;
}

然后从JSON加载类对象的列表:

 列表<类别及GT;类别=新的ArrayList<类别及GT;();
的for(int i = 0; I< categories.length();我++){
     JSONObject的C = categories.getJSONObject(I)
     分类分类=新类别();
     category.name = c.getString(TAG_NAME);
     category.id = c.getString(TAG_ID);     CATEGORY.add(类);
 }

最后通过一个的HashMap<字符串列表<类别>> 为您的适配器,而不是的HashMap&LT参数;字符串列表<弦乐> > 。并更改适配器的方法来支持类对象,而不是字符串。

所以,当你调用 getChild()方法,它会返回一个类别对象,在这里你可以找到名称 ID Category.name Category.id

更新

您的适配器类更改为:

 公共类ExpandableListAdapter扩展BaseExpandableListAdapter {    私人语境_context;
    私人列表<串GT; _listDataHeader; //头标题
    //子数据头标题格式,标题子
    私人的HashMap<字符串列表<分类和GT;> _listDataChild;    公共ExpandableListAdapter(上下文的背景下,列表与LT;弦乐> listDataHeader,
                                 HashMap的<字符串列表<分类和GT;> listChildData){
        this._context =背景;
        this._listDataHeader = listDataHeader;
        this._listDataChild = listChildData;
    }    @覆盖
    公共类别getChild(INT groupPosition,诠释childPosititon){
        返回this._listDataChild.get(this._listDataHeader.get(groupPosition))
                获得(childPosititon);
    }    @覆盖
    众长getChildId(INT groupPosition,诠释childPosition){
        返回childPosition;
    }    @覆盖
    公共查看getChildView(INT groupPosition,最终诠释childPosition,
                             布尔isLastChild,查看convertView,父母的ViewGroup){        最后一类childCategory =(类别)getChild(groupPosition,childPosition);        如果(convertView == NULL){
            LayoutInflater infalInflater =(LayoutInflater)this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.list_item,NULL);
        }        TextView的txtListChild =(TextView中)convertView
                .findViewById(R.id.lblListItem);        txtListChild.setText(childCategory.name);
        返回convertView;
    }    @覆盖
    公众诠释getChildrenCount(INT groupPosition){
        返回this._listDataChild.get(this._listDataHeader.get(groupPosition))
                。尺寸()​​;
    }    @覆盖
    公共对象getGroup(INT groupPosition){
        返回this._listDataHeader.get(groupPosition);
    }    @覆盖
    公众诠释getGroupCount(){
        返回this._listDataHeader.size();
    }    @覆盖
    众长getGroupId(INT groupPosition){
        返回groupPosition;
    }    @覆盖
    公共查看getGroupView(INT groupPosition,布尔isExpanded,
                             查看convertView,父母的ViewGroup){
        字符串headerTitle =(字符串)getGroup(groupPosition);
        如果(convertView == NULL){
            LayoutInflater infalInflater =(LayoutInflater)this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.list_group,NULL);
        }        TextView的lblListHeader =(TextView中)convertView
                .findViewById(R.id.lblListHeader);
        lblListHeader.setTypeface(NULL,Typeface.BOLD);
        lblListHeader.setText(headerTitle);        返回convertView;
    }    @覆盖
    公共布尔hasStableIds(){
        返回false;
    }    @覆盖
    公共布尔isChildSelectable(INT groupPosition,诠释childPosition){
        返回true;
    }
}

而在你的点击监听器:

  expListView.setOnChildClickListener(新ExpandableListView.OnChildClickListener(){   @覆盖
   公共布尔onChildClick(ExpandableListView父视图V,
                                                INT groupPosition,诠释childPosition,长ID){
          // TODO自动生成方法存根            串头= listDataHeader.get(groupPosition);
            子类= listDataChild.get(头)获得(childPosition);            // child.name拿到名
            // child.id拿到ID
           Toast.makeText(getActivity(),ChildNme:+ child.name +childID的:+ child.id,Toast.LENGTH_SHORT).show();
            返回false;
          }
   });

just want to know if it is possible to change the childPosition id of the expandablelistview?

because i want to change the childPosition id to my category id..

this is my DataChild, i already get categories name but i also want to get the categories id. how do i do that?

List<String> CATEGORY = new ArrayList<String>();
            for(int i=0;i<categories.length();i++){
                JSONObject c = categories.getJSONObject(i);
                String categories_name = c.getString(TAG_NAME);
                String categories_id = c.getString(TAG_ID);

                CATEGORY.add(categories_name);
            }

this is my setOnChildClickListener where i get the childPosition.

// Listview on child click listener
                expListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {

                    @Override
                    public boolean onChildClick(ExpandableListView parent, View v,
                                                int groupPosition, int childPosition, long id) {
                        // TODO Auto-generated method stub
                        Toast.makeText(
                                getActivity(),
                                listDataHeader.get(groupPosition)
                                        + " : "
                                        + listDataChild.get(
                                        listDataHeader.get(groupPosition)).get(
                                        childPosition), Toast.LENGTH_SHORT)
                                .show();
                        return false;
                    }
                });

this is the complete code

package com.example.administrator.mosbeau;

import android.app.FragmentManager;
import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ExpandableListView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

/**
 * Fragment used for managing interactions for and presentation of a navigation drawer.
 * See the <a href="https://developer.android.com/design/patterns/navigation-drawer.html#Interaction">
 * design guidelines</a> for a complete explanation of the behaviors implemented here.
 */
public class NavigationDrawerFragment extends Fragment {

    /**
     * Remember the position of the selected item.
     */
    private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";

    /**
     * Per the design guidelines, you should show the drawer on launch until the user manually
     * expands it. This shared preference tracks this.
     */
    private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";

    /**
     * A pointer to the current callbacks instance (the Activity).
     */
    private NavigationDrawerCallbacks mCallbacks;

    /**
     * Helper component that ties the action bar to the navigation drawer.
     */
    private ActionBarDrawerToggle mDrawerToggle;

    private DrawerLayout mDrawerLayout;
    private ListView mDrawerListView;
    private View mFragmentContainerView;

    private int mCurrentSelectedPosition = 0;
    private boolean mFromSavedInstanceState;
    private boolean mUserLearnedDrawer;

    String myJSON;
    private static final String TAG_RESULTS="result";
    private static final String TAG_ID = "categories_id";
    private static final String TAG_NAME = "categories_name";
    JSONArray categories = null;


    public NavigationDrawerFragment() {
    }

    Boolean InternetAvailable = false;
    Seocnd detectconnection;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Read in the flag indicating whether or not the user has demonstrated awareness of the
        // drawer. See PREF_USER_LEARNED_DRAWER for details.
        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
        mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false);

        if (savedInstanceState != null) {
            mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
            mFromSavedInstanceState = true;
        }

        // Select either the default item (0) or the last selected item.
        selectItem(mCurrentSelectedPosition);

    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        // Indicate that this fragment would like to influence the set of actions in the action bar.
        setHasOptionsMenu(true);
    }

    ExpandableListAdapter listAdapter;
    ExpandableListView expListView;
    List<String> listDataHeader;
    HashMap<String, List<String>> listDataChild;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        View fragmentView =  inflater.inflate(
                R.layout.fragment_navigation_drawer, container, false);
        /*mDrawerListView = (ListView) fragmentView.findViewById(R.id.listView);

        //mDrawerListView = (ListView) inflater.inflate(
                //R.layout.fragment_navigation_drawer, container, false);
        mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                selectItem(position);
            }
        });
        mDrawerListView.setAdapter(new ArrayAdapter<String>(
                getActionBar().getThemedContext(),
                android.R.layout.simple_list_item_activated_1,
                android.R.id.text1,
                new String[]{
                        getString(R.string.title_home),
                        getString(R.string.title_category),
                        getString(R.string.title_myaccount),
                        getString(R.string.title_referafriend),
                        getString(R.string.title_about),
                        getString(R.string.title_privacypocity),
                        getString(R.string.title_shippingterms),
                        getString(R.string.title_contactus),
                }));
        mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);*/

        // get the listview
        expListView = (ExpandableListView) fragmentView.findViewById(R.id.lvExp);

        // preparing list data
        //prepareListData();

        detectconnection = new Seocnd(getActivity());
        InternetAvailable = detectconnection.InternetConnecting();
        if (InternetAvailable) {
            getData();
        } else {
            selectItem(100);
        }
        return fragmentView;
    }


    public void getData(){
        class GetDataJSON extends AsyncTask<String, Void, String> {

            @Override
            protected String doInBackground(String... params) {
                DefaultHttpClient httpclient = new DefaultHttpClient(new BasicHttpParams());
                HttpPost httppost = new HttpPost("http://joehamirbalabadan.com/android/android/categories.php");

                // Depends on your web service
                httppost.setHeader("Content-type", "application/json");

                InputStream inputStream = null;
                String result = null;
                try {
                    HttpResponse response = httpclient.execute(httppost);
                    HttpEntity entity = response.getEntity();

                    inputStream = entity.getContent();
                    // json is UTF-8 by default
                    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
                    StringBuilder sb = new StringBuilder();

                    String line = null;
                    while ((line = reader.readLine()) != null)
                    {
                        sb.append(line + "\n");
                    }
                    result = sb.toString();
                } catch (Exception e) {
                    // Oops
                }
                finally {
                    try{if(inputStream != null)inputStream.close();}catch(Exception squish){}
                }
                return result;
            }

            @Override
            protected void onPostExecute(String result){
                myJSON=result;
                prepareListData();

                listAdapter = new ExpandableListAdapter(getActivity(), listDataHeader, listDataChild);

                // setting list adapter
                expListView.setAdapter(listAdapter);

                // Listview Group click listener
                expListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {

                    @Override
                    public boolean onGroupClick(ExpandableListView parent, View v,
                                                int groupPosition, long id) {
            /*Toast.makeText(getActivity(),
            "Group Clicked " + listDataHeader.get(groupPosition),
            Toast.LENGTH_SHORT).show();*/
                        if(groupPosition == 1){
                            return false;
                        } else {
                            selectItem(groupPosition);
                            return true;
                        }
                    }
                });

                // Listview on child click listener
                expListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {

                    @Override
                    public boolean onChildClick(ExpandableListView parent, View v,
                                                int groupPosition, int childPosition, long id) {
                        // TODO Auto-generated method stub
                        Toast.makeText(
                                getActivity(),
                                listDataHeader.get(groupPosition)
                                        + " : "
                                        + listDataChild.get(
                                        listDataHeader.get(groupPosition)).get(
                                        childPosition), Toast.LENGTH_SHORT)
                                .show();
                        return false;
                    }
                });
            }
        }
        GetDataJSON g = new GetDataJSON();
        g.execute();
    }

    protected void prepareListData(){
        try {
            JSONObject jsonObj = new JSONObject(myJSON);
            categories = jsonObj.getJSONArray(TAG_RESULTS);

            listDataHeader = new ArrayList<String>();
            listDataChild = new HashMap<String, List<String>>();

            // Adding group data
            listDataHeader.add("HOME");
            listDataHeader.add("CATEGORY");
            listDataHeader.add("MY ACCOUNT");
            listDataHeader.add("REFER A FRIEND");
            listDataHeader.add("ABOUT");
            listDataHeader.add("PRIVACY POLICY");
            listDataHeader.add("SHIPPING TERMS");
            listDataHeader.add("CONTACT US");

            List<String> CATEGORY = new ArrayList<String>();
            for(int i=0;i<categories.length();i++){
                JSONObject c = categories.getJSONObject(i);
                String categories_name = c.getString(TAG_NAME);
                String categories_id = c.getString(TAG_ID);

                CATEGORY.add(categories_name);
            }

            listDataChild.put(listDataHeader.get(1), CATEGORY); // Header, Child data

        } catch (JSONException e) {
            e.printStackTrace();
        }

    }


    /*
     * Preparing the list data
     */
    /*private void prepareListData() {
        listDataHeader = new ArrayList<String>();
        listDataChild = new HashMap<String, List<String>>();

        // Adding group data
        listDataHeader.add("HOME");
        listDataHeader.add("CATEGORY");
        listDataHeader.add("MY ACCOUNT");
        listDataHeader.add("REFER A FRIEND");
        listDataHeader.add("ABOUT");
        listDataHeader.add("PRIVACY POLICY");
        listDataHeader.add("SHIPPING TERMS");
        listDataHeader.add("CONTACT US");

        // Adding child data
        List<String> CATEGORY = new ArrayList<String>();
        CATEGORY.add("Category 1");
        CATEGORY.add("Category 2");
        CATEGORY.add("Category 3");
        CATEGORY.add("Category 4");
        CATEGORY.add("Category 5");


        listDataChild.put(listDataHeader.get(1), CATEGORY); // Header, Child data
}*/

    public boolean isDrawerOpen() {
        return mDrawerLayout != null && mDrawerLayout.isDrawerOpen(mFragmentContainerView);
    }

    /**
     * Users of this fragment must call this method to set up the navigation drawer interactions.
     *
     * @param fragmentId   The android:id of this fragment in its activity's layout.
     * @param drawerLayout The DrawerLayout containing this fragment's UI.
     */
    public void setUp(int fragmentId, DrawerLayout drawerLayout) {
        mFragmentContainerView = getActivity().findViewById(fragmentId);
        mDrawerLayout = drawerLayout;

        // set a custom shadow that overlays the main content when the drawer opens
        mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
        // set up the drawer's list view with items and click listener

        ActionBar actionBar = getActionBar();
        actionBar.setDisplayHomeAsUpEnabled(true);
        actionBar.setHomeButtonEnabled(true);

        // ActionBarDrawerToggle ties together the the proper interactions
        // between the navigation drawer and the action bar app icon.
        mDrawerToggle = new ActionBarDrawerToggle(
                getActivity(),                    /* host Activity */
                mDrawerLayout,                    /* DrawerLayout object */
                R.string.navigation_drawer_open,  /* "open drawer" description for accessibility */
                R.string.navigation_drawer_close  /* "close drawer" description for accessibility */
        ) {
            @Override
            public void onDrawerClosed(View drawerView) {
                super.onDrawerClosed(drawerView);
                if (!isAdded()) {
                    return;
                }

                getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
            }

            @Override
            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
                if (!isAdded()) {
                    return;
                }

                if (!mUserLearnedDrawer) {
                    // The user manually opened the drawer; store this flag to prevent auto-showing
                    // the navigation drawer automatically in the future.
                    mUserLearnedDrawer = true;
                    SharedPreferences sp = PreferenceManager
                            .getDefaultSharedPreferences(getActivity());
                    sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true).apply();
                }

                getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
            }
        };

        // If the user hasn't 'learned' about the drawer, open it to introduce them to the drawer,
        // per the navigation drawer design guidelines.
        if (!mUserLearnedDrawer && !mFromSavedInstanceState) {
            mDrawerLayout.openDrawer(mFragmentContainerView);
        }

        // Defer code dependent on restoration of previous instance state.
        mDrawerLayout.post(new Runnable() {
            @Override
            public void run() {
                mDrawerToggle.syncState();
            }
        });

        mDrawerLayout.setDrawerListener(mDrawerToggle);
    }

    private void selectItem(int position) {
        mCurrentSelectedPosition = position;
        if (mDrawerListView != null) {
            mDrawerListView.setItemChecked(position, true);
        }
        if (mDrawerLayout != null) {
            mDrawerLayout.closeDrawer(mFragmentContainerView);
        }
        if (mCallbacks != null) {
            mCallbacks.onNavigationDrawerItemSelected(position);
        }
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        try {
            mCallbacks = (NavigationDrawerCallbacks) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException("Activity must implement NavigationDrawerCallbacks.");
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mCallbacks = null;
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Forward the new configuration the drawer toggle component.
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        // If the drawer is open, show the global app actions in the action bar. See also
        // showGlobalContextActionBar, which controls the top-left area of the action bar.
        if (mDrawerLayout != null && isDrawerOpen()) {
            inflater.inflate(R.menu.global, menu);
            showGlobalContextActionBar();
        }
        super.onCreateOptionsMenu(menu, inflater);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }

        if (item.getItemId() == R.id.action_example) {
            Toast.makeText(getActivity(), "Example action.", Toast.LENGTH_SHORT).show();
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    /**
     * Per the navigation drawer design guidelines, updates the action bar to show the global app
     * 'context', rather than just what's in the current screen.
     */
    private void showGlobalContextActionBar() {
        ActionBar actionBar = getActionBar();
        actionBar.setDisplayShowTitleEnabled(true);
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
        actionBar.setTitle(R.string.app_name);
    }

    private ActionBar getActionBar() {
        return ((ActionBarActivity) getActivity()).getSupportActionBar();
    }

    /**
     * Callbacks interface that all activities using this fragment must implement.
     */
    public static interface NavigationDrawerCallbacks {
        /**
         * Called when an item in the navigation drawer is selected.
         */
        void onNavigationDrawerItemSelected(int position);
    }
}

ExpandableListAdapter.java

package com.example.administrator.mosbeau;

/**
 * Created by Administrator on 9/21/2015.
 */

import android.content.Context;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.TextView;

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

public class ExpandableListAdapter extends BaseExpandableListAdapter {

    private Context _context;
    private List<String> _listDataHeader; // header titles
    // child data in format of header title, child title
    private HashMap<String, List<String>> _listDataChild;

    public ExpandableListAdapter(Context context, List<String> listDataHeader,
                                 HashMap<String, List<String>> listChildData) {
        this._context = context;
        this._listDataHeader = listDataHeader;
        this._listDataChild = listChildData;
    }

    @Override
    public Object getChild(int groupPosition, int childPosititon) {
        return this._listDataChild.get(this._listDataHeader.get(groupPosition))
                .get(childPosititon);
    }

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

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

        final String childText = (String) getChild(groupPosition, childPosition);

        if (convertView == null) {
            LayoutInflater infalInflater = (LayoutInflater) this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.list_item, null);
        }

        TextView txtListChild = (TextView) convertView
                .findViewById(R.id.lblListItem);

        txtListChild.setText(childText);
        return convertView;
    }

    @Override
    public int getChildrenCount(int groupPosition) {
        return this._listDataChild.get(this._listDataHeader.get(groupPosition))
                .size();
    }

    @Override
    public Object getGroup(int groupPosition) {
        return this._listDataHeader.get(groupPosition);
    }

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

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

    @Override
    public View getGroupView(int groupPosition, boolean isExpanded,
                             View convertView, ViewGroup parent) {
        String headerTitle = (String) getGroup(groupPosition);
        if (convertView == null) {
            LayoutInflater infalInflater = (LayoutInflater) this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.list_group, null);
        }

        TextView lblListHeader = (TextView) convertView
                .findViewById(R.id.lblListHeader);
        lblListHeader.setTypeface(null, Typeface.BOLD);
        lblListHeader.setText(headerTitle);

        return convertView;
    }

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

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

NEW QUESTION

i change my onChildClick here is the code

    public boolean onChildClick(ExpandableListView parent, View v,
                            int groupPosition, int childPosition, long id) {
    // TODO Auto-generated method stub

    String header = listDataHeader.get(groupPosition);
    Category child = listDataChild.get(header).get(childPosition);

    // child.name to get the name
    // child.id to get the id
    //Toast.makeText(getActivity(),"ChildNme: "+child.name+" ChildId: "+child.id, Toast.LENGTH_SHORT).show();
    selectItem(1);

    return false;
}

selectItem(1) will go in my MainActivity.

in this part of the code

else if (position == 1){
    fragmentManager.beginTransaction()
            .replace(R.id.container, CategoryFragment.newInstance())
            .commit();
}

then the CategoryFragment will display.

my problem now is how to pass the ChildName and ChildId that solved in previous problem?

i want to pass the ChildName and ChildId to my CategoryFragment

package com.example.administrator.mosbeau;

import android.app.Activity;
import android.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

/**
 * Created by Administrator on 9/18/2015.
 */
public class CategoryFragment extends Fragment {

    public static CategoryFragment newInstance() {
        CategoryFragment fragment = new CategoryFragment();
        return fragment;
    }

    public CategoryFragment () {
    }

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

        getActivity().invalidateOptionsMenu();

        return rootView;
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        ((MainActivity) activity).onSectionAttached(2);
    }
}
解决方案

First you need to create a Model class (lets say Category), that contains the name and the id:

public class  Category{
    public String name;
    public String id;
}

Then load a list of Category object from your json:

List<Category> CATEGORY = new ArrayList<Category>();
for(int i=0;i<categories.length();i++){
     JSONObject c = categories.getJSONObject(i);
     Category category = new Category();
     category.name = c.getString(TAG_NAME);
     category.id = c.getString(TAG_ID);

     CATEGORY.add(category);
 }

Finally pass a HashMap<String, List<Category>> as parameter in your adapter instead of HashMap<String, List<String>>. And change your adapter methods to support Category object instead of String.

So when you call getChild() method, it will return a Category object where you can find the name and the id (Category.name , Category.id)

Update

Change your adapter class to:

public class ExpandableListAdapter extends BaseExpandableListAdapter {

    private Context _context;
    private List<String> _listDataHeader; // header titles
    // child data in format of header title, child title
    private HashMap<String, List<Category>> _listDataChild;

    public ExpandableListAdapter(Context context, List<String> listDataHeader,
                                 HashMap<String, List<Category>> listChildData) {
        this._context = context;
        this._listDataHeader = listDataHeader;
        this._listDataChild = listChildData;
    }

    @Override
    public Category getChild(int groupPosition, int childPosititon) {
        return this._listDataChild.get(this._listDataHeader.get(groupPosition))
                .get(childPosititon);
    }

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

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

        final Category childCategory = (Category) getChild(groupPosition, childPosition);

        if (convertView == null) {
            LayoutInflater infalInflater = (LayoutInflater) this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.list_item, null);
        }

        TextView txtListChild = (TextView) convertView
                .findViewById(R.id.lblListItem);

        txtListChild.setText(childCategory.name);
        return convertView;
    }

    @Override
    public int getChildrenCount(int groupPosition) {
        return this._listDataChild.get(this._listDataHeader.get(groupPosition))
                .size();
    }

    @Override
    public Object getGroup(int groupPosition) {
        return this._listDataHeader.get(groupPosition);
    }

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

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

    @Override
    public View getGroupView(int groupPosition, boolean isExpanded,
                             View convertView, ViewGroup parent) {
        String headerTitle = (String) getGroup(groupPosition);
        if (convertView == null) {
            LayoutInflater infalInflater = (LayoutInflater) this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.list_group, null);
        }

        TextView lblListHeader = (TextView) convertView
                .findViewById(R.id.lblListHeader);
        lblListHeader.setTypeface(null, Typeface.BOLD);
        lblListHeader.setText(headerTitle);

        return convertView;
    }

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

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

And in your click listener:

expListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {

   @Override
   public boolean onChildClick(ExpandableListView parent, View v,
                                                int groupPosition, int childPosition, long id) {
          // TODO Auto-generated method stub

            String header = listDataHeader.get(groupPosition);
            Category child = listDataChild.get(header).get(childPosition);

            // child.name to get the name
            // child.id to get the id
           Toast.makeText(getActivity(),"ChildNme: "+child.name+" ChildId: "+child.id, Toast.LENGTH_SHORT).show();
            return false;
          }
   });

这篇关于是它可以改变expandablelistview的childPosition ID?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

08-24 01:18