本文介绍了如何添加三个级别的ListView在ExpandableListView在安卓的处理方法,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
我想补充的ExpandableListView.In当前ExpandableListView在更多层面上是两级我如何增加一个级别。我是新的Android的发展,请帮助我。提前致谢!
我的MainActivity.java: -
专用工具栏mToolbar;
ExpandableListAdapter listAdapter;
ExpandableListView expListView;
名单<字符串> listDataHeader;
HashMap的<字符串列表与LT;字符串>> listDataChild;
//私人FragmentDrawer drawerFragment;
ArrayList的<字符串> arraylist1,arraylist2,arraylist3,arrayList4,arrayList5;
INT CNT = 0;
@覆盖
保护无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_main);
mToolbar =(工具栏)findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar()setDisplayShowHomeEnabled(真)。
expListView =(ExpandableListView)findViewById(R.id.lvExp);
// preparing列表数据
prepareListData();
listAdapter =新ExpandableListAdapter(这一点,listDataHeader,listDataChild);
//设置列表适配器
expListView.setAdapter(listAdapter);
/ * drawerFragment =(FragmentDrawer)
。getSupportFragmentManager()findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer,(DrawerLayout)findViewById(R.id.drawer_layout),mToolbar);
drawerFragment.setDrawerListener(本); * /
//显示在应用程序启动的第一个抽屉式导航视图
// displayView(0);
Log.d(onCreate方法,);
arraylist1 =新的ArrayList<字符串>();
arraylist2 =新的ArrayList<字符串>();
arraylist3 =新的ArrayList<字符串>();
arrayList4 =新的ArrayList<字符串>();
arrayList5 =新的ArrayList<字符串>();
新ProductsAsynTask().execute("http://opencart.$c$cniques.com/shopping/?route=feed/web_api/menu&key=test123$");
}
私人无效prepareListData(){
listDataHeader =新的ArrayList<字符串>();
listDataChild =新的HashMap<字符串列表与LT;字符串>>();
//添加子数据
listDataHeader.add(250强);
listDataHeader.add(现在显示);
listDataHeader.add(即将推出。);
//添加子数据
名单<字符串> TOP250 =新的ArrayList<字符串>();
top250.add(肖申克的救赎);
top250.add(教父);
top250.add(教父:第二部分);
top250.add(低俗小说);
top250.add(黄金三镖客);
top250.add(黑暗骑士);
top250.add(12怒汉);
名单<字符串> nowShowing =新的ArrayList<字符串>();
nowShowing.add(招魂);
nowShowing.add(卑鄙的我2);
nowShowing.add(涡轮);
nowShowing.add(大人2);
nowShowing.add(红2);
nowShowing.add(以下简称金刚狼);
名单<字符串> comingSoon =新的ArrayList<字符串>();
comingSoon.add(2枪);
comingSoon.add(蓝精灵2);
comingSoon.add(以下简称壮观现在);
comingSoon.add(大峡谷);
comingSoon.add(欧罗巴报告);
listDataChild.put(listDataHeader.get(0),TOP250); //头,子数据
listDataChild.put(listDataHeader.get(1),nowShowing);
listDataChild.put(listDataHeader.get(2),comingSoon);
}
公共类ProductsAsynTask扩展的AsyncTask<字符串,太虚,太虚> {
ProgressDialog对话框;
在preExecute保护无效(){
super.on preExecute();
Log.d(在上preExceute,);
对话框=新ProgressDialog(MainActivity.this);
dialog.setMessage(载入中,请稍候);
dialog.setTitle(连接服务器);
dialog.show();
dialog.setCancelable(假);
}
保护无效doInBackground(字符串...参数){
尝试{
Log.d(以doInBackground,);
HttpClient的客户端=新DefaultHttpClient();
HttpPost后=新HttpPost(参数[0]);
HTT presponse响应= client.execute(后);
。INT状态= response.getStatusLine()的getStatus code();
如果(状态== 200){
Log.d(状态,+状态);
HttpEntity实体= response.getEntity();
字符串数据= EntityUtils.toString(实体);
的JSONObject的JSONObject =新的JSONObject(数据);
JSONArray jArray = jsonObject.getJSONArray(类);
的for(int i = 0; I< jArray.length();我++){
CNT ++;
Log.d(数组的值,jArray.length()+);
Log.d(i的值,+ I);
的JSONObject jsonObject1 = jArray.getJSONObject(ⅰ);
arraylist1.add(jsonObject1.getString(名字));
//数据1 = jsonObject1.getString(姓名);
// Log.d(你好,DATA1);
JSONArray jsonArray = jsonObject1.getJSONArray(儿童);
// JSONObject的jsonObject2 = jsonObject1.getJSONObject(儿童);
对于(INT J = 0; J< jsonArray.length(); J ++){
JSONObject的jsonObject2 = jsonArray.getJSONObject(J);
arraylist2.add(jsonObject2.getString(名字));
//数据2 = jsonObject2.getString(姓名);
JSONArray jsonArray1 = jsonObject2.getJSONArray(children_lv3);
对于(INT K = 0; K< jsonArray1.length(); k ++){
JSONObject的jsonObject3 = jsonArray1.getJSONObject(K);
arraylist3.add(jsonObject3.getString(名字));
arrayList4.add(jsonObject3.getString(HREF));
/ *数据3 = jsonObject3.getString(姓名);
DATA4 = jsonObject3.getString(HREF); * /
}
arrayList5.add(jsonObject2.getString(HREF));
//数据5 = jsonObject2.getString(HREF);
}
}
}
}赶上(IOException异常E){
Log.e(错误IOException异常:,e.getMessage());
}赶上(JSONException E){
Log.e(错误JSONException,e.getMessage());
}
返回null;
}
保护无效onPostExecute(虚空避免){
super.onPostExecute(避免);
dialog.dismiss();
Log.d(反价值,+ CNT);
}
}
@覆盖
公共布尔onCreateOptionsMenu(功能菜单){
//充气菜单;这增加了项目操作栏,如果它是present。
。getMenuInflater()膨胀(R.menu.menu_main,菜单);
返回true;
}
@覆盖
公共布尔onOptionsItemSelected(菜单项项){
//处理动作栏项目点击这里。将操作栏
//自动在主/向上按钮操作的点击,只要
//你在AndroidManifest.xml中指定一个父活动。
INT的id = item.getItemId();
// noinspection SimplifiableIfStatement
如果(ID == R.id.action_settings){
返回true;
}
如果(ID == R.id.action_search){
Toast.makeText(getApplicationContext(),搜寻动作被选择!,Toast.LENGTH_SHORT).show();
返回true;
}
返回super.onOptionsItemSelected(项目);
}
/ *公共无效onDrawerItemSelected(查看视图,INT位置){
displayView(位置);
}
私人无效displayView(INT位置){
片段片段= NULL;
字符串标题=的getString(R.string.app_name);
开关(位置){
情况下0:
片段=新HomeFragment();
标题=的getString(R.string.title_home);
打破;
情况1:
片段=新FriendsFragment();
标题=的getString(R.string.title_friends);
打破;
案例2:
片段=新MessagesFragment();
标题=的getString(R.string.title_messages);
打破;
默认:
打破;
}
如果(片段!= NULL){
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container_body,片段);
fragmentTransaction.commit();
//设置工具栏标题
getSupportActionBar()的setTitle(职称)。
}
} * /}
我的ExpandableListAdapter.java是在这里: -
公共类ExpandableListAdapter扩展BaseExpandableListAdapter {
私人语境_context;
私人列表<字符串> _listDataHeader; //标题标题
//子数据的标题标题格式,子标题
私人的HashMap<字符串列表与LT;字符串>> _listDataChild;
公共ExpandableListAdapter(上下文的背景下,列表与LT;字符串> listDataHeader,
HashMap的<字符串列表与LT;字符串>> 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,ViewGroup中父){
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,ViewGroup中父){
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;
}}
我的activity_main.xml是在这里: -
< android.support.v4.widget.DrawerLayout
的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:ID =@ + ID / drawer_layout
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT>
<的LinearLayout
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:方向=垂直>
<的LinearLayout
机器人:ID =@ + ID / container_toolbar
机器人:layout_width =match_parent
机器人:layout_height =WRAP_CONTENT
机器人:方向=垂直>
<包括
机器人:ID =@ + ID /工具栏
布局=@布局/工具栏/>
< / LinearLayout中>
<的FrameLayout
机器人:ID =@ + ID / container_body
机器人:layout_width =FILL_PARENT
机器人:layout_height =0dp
机器人:layout_weight =1/>
< / LinearLayout中>
< ExpandableListView
机器人:ID =@ + ID / lvExp
机器人:layout_height =match_parent
机器人:layout_width =260dp
机器人:layout_gravity =开始/>
<! - <片段
机器人:ID =@ + ID / fragment_navigation_drawer
机器人:名称=com.android.ShoppingMazza.activity.ExpandableListAdapter
机器人:layout_width =@扪/ nav_drawer_width
机器人:layout_height =match_parent
机器人:layout_gravity =开始
应用程序:布局=@布局/ fragment_navigation_drawer
工具:布局=@布局/ fragment_navigation_drawer/> - >
< /android.support.v4.widget.DrawerLayout>
解决方案
activity_main.xml
< XML版本=1.0编码=UTF-8&GT?;
< LinearLayout中的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:方向=垂直
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT>
< ExpandableListView
机器人:layout_width =FILL_PARENT
机器人:ID =@ + ID / ParentLevel
机器人:groupIndicator =@空
机器人:layout_height =FILL_PARENT>
< / ExpandableListView>
< / LinearLayout中>
MainActivity.Java
进口android.app.Activity;
进口android.content.Context;
进口android.graphics.Color;
进口android.os.Bundle;
进口android.view.View;
进口android.view.ViewGroup;
进口android.widget.BaseExpandableListAdapter;
进口android.widget.ExpandableListView;
进口android.widget.ListView;
进口android.widget.TextView;
进口android.widget.LinearLayout.LayoutParams;
公共类家庭扩展活动
{
ExpandableListView explvlist;
@覆盖
公共无效的onCreate(包savedInstanceState)
{
super.onCreate(savedInstanceState);
的setContentView(R.layout.main);
explvlist =(ExpandableListView)findViewById(R.id.ParentLevel);
explvlist.setAdapter(新ParentLevel());
}
公共类ParentLevel扩展BaseExpandableListAdapter
{
@覆盖
公共对象getChild(INT为arg0,INT ARG1)
{
返回ARG1;
}
@覆盖
众长getChildId(INT groupPosition,INT childPosition)
{
返回childPosition;
}
@覆盖
公共查看getChildView(INT groupPosition,诠释childPosition,布尔isLastChild,查看convertView,父母的ViewGroup)
{
CustExpListview SecondLevelexplv =新CustExpListview(Home.this);
SecondLevelexplv.setAdapter(新SecondLevelAdapter());
SecondLevelexplv.setGroupIndicator(空);
返回SecondLevelexplv;
}
@覆盖
公众诠释getChildrenCount(INT groupPosition)
{
返回3;
}
@覆盖
公共对象getGroup(INT groupPosition)
{
返回groupPosition;
}
@覆盖
公众诠释getGroupCount()
{
返回5;
}
@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)
{
TextView的电视=新的TextView(Home.this);
tv.setText( - > FirstLevel);
tv.setBackgroundColor(Color.BLUE);
tv.setPadding(10,7,7,7);
返回电视;
}
@覆盖
公共布尔hasStableIds()
{
返回true;
}
@覆盖
公共布尔isChildSelectable(INT groupPosition,INT childPosition)
{
返回true;
}
}
公共类CustExpListview扩展ExpandableListView
{
INT intGroupPosition,intChildPosition,intGroupid;
公共CustExpListview(上下文的背景下)
{
超(上下文);
}
保护无效onMeasure(INT widthMeasureSpec,INT heightMeasureSpec)
{
widthMeasureSpec = MeasureSpec.makeMeasureSpec(960,MeasureSpec.AT_MOST);
heightMeasureSpec = MeasureSpec.makeMeasureSpec(600,MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec,heightMeasureSpec);
}
}
公共类SecondLevelAdapter扩展BaseExpandableListAdapter
{
@覆盖
公共对象getChild(INT groupPosition,INT childPosition)
{
返回childPosition;
}
@覆盖
众长getChildId(INT groupPosition,INT childPosition)
{
返回childPosition;
}
@覆盖
公共查看getChildView(INT groupPosition,INT childPosition,
布尔isLastChild,查看convertView,父母的ViewGroup)
{
TextView的电视=新的TextView(Home.this);
tv.setText(子);
tv.setPadding(15,5,5,5);
tv.setBackgroundColor(Color.YELLOW);
tv.setLayoutParams(新ListView.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
返回电视;
}
@覆盖
公众诠释getChildrenCount(INT groupPosition)
{
返回5;
}
@覆盖
公共对象getGroup(INT groupPosition)
{
返回groupPosition;
}
@覆盖
公众诠释getGroupCount()
{
返回1;
}
@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)
{
TextView的电视=新的TextView(Home.this);
tv.setText( - >第二个等级);
tv.setPadding(12,7,7,7);
tv.setBackgroundColor(Color.RED);
返回电视;
}
@覆盖
公共布尔hasStableIds()
{
// TODO自动生成方法存根
返回true;
}
@覆盖
公共布尔isChildSelectable(INT groupPosition,INT childPosition)
{
// TODO自动生成方法存根
返回true;
}
}
}
I want to add one more level of in ExpandableListView.In current ExpandableListView is two level how can i add one more level. I am new in android developing please help me. Thanks in advance!
My MainActivity.java:-
private Toolbar mToolbar;
ExpandableListAdapter listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;
// private FragmentDrawer drawerFragment;
ArrayList<String> arraylist1,arraylist2,arraylist3,arrayList4,arrayList5;
int cnt = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
expListView = (ExpandableListView) findViewById(R.id.lvExp);
// preparing list data
prepareListData();
listAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild);
// setting list adapter
expListView.setAdapter(listAdapter);
/* drawerFragment = (FragmentDrawer)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar);
drawerFragment.setDrawerListener(this);*/
// display the first navigation drawer view on app launch
// displayView(0);
Log.d("oncreate method", "");
arraylist1 = new ArrayList<String>();
arraylist2 = new ArrayList<String>();
arraylist3 = new ArrayList<String>();
arrayList4 = new ArrayList<String>();
arrayList5 = new ArrayList<String>();
new ProductsAsynTask().execute("http://opencart.codeniques.com/shopping/?route=feed/web_api/menu&key=test123$");
}
private void prepareListData() {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
// Adding child data
listDataHeader.add("Top 250");
listDataHeader.add("Now Showing");
listDataHeader.add("Coming Soon..");
// Adding child data
List<String> top250 = new ArrayList<String>();
top250.add("The Shawshank Redemption");
top250.add("The Godfather");
top250.add("The Godfather: Part II");
top250.add("Pulp Fiction");
top250.add("The Good, the Bad and the Ugly");
top250.add("The Dark Knight");
top250.add("12 Angry Men");
List<String> nowShowing = new ArrayList<String>();
nowShowing.add("The Conjuring");
nowShowing.add("Despicable Me 2");
nowShowing.add("Turbo");
nowShowing.add("Grown Ups 2");
nowShowing.add("Red 2");
nowShowing.add("The Wolverine");
List<String> comingSoon = new ArrayList<String>();
comingSoon.add("2 Guns");
comingSoon.add("The Smurfs 2");
comingSoon.add("The Spectacular Now");
comingSoon.add("The Canyons");
comingSoon.add("Europa Report");
listDataChild.put(listDataHeader.get(0), top250); // Header, Child data
listDataChild.put(listDataHeader.get(1), nowShowing);
listDataChild.put(listDataHeader.get(2), comingSoon);
}
public class ProductsAsynTask extends AsyncTask<String,Void,Void>{
ProgressDialog dialog;
protected void onPreExecute(){
super.onPreExecute();
Log.d("In onPreExceute","");
dialog = new ProgressDialog(MainActivity.this);
dialog.setMessage("Loading, Please wait");
dialog.setTitle("Connecting server");
dialog.show();
dialog.setCancelable(false);
}
protected Void doInBackground(String... param){
try{
Log.d("In doInBackground","");
HttpClient client= new DefaultHttpClient();
HttpPost post = new HttpPost(param[0]);
HttpResponse response = client.execute(post);
int status = response.getStatusLine().getStatusCode();
if(status == 200){
Log.d("Status",""+status);
HttpEntity entity = response.getEntity();
String data = EntityUtils.toString(entity);
JSONObject jsonObject = new JSONObject(data);
JSONArray jArray = jsonObject.getJSONArray("categories");
for(int i = 0;i < jArray.length();i++){
cnt++;
Log.d("value of array",jArray.length()+"");
Log.d("Value of i",""+i);
JSONObject jsonObject1 = jArray.getJSONObject(i);
arraylist1.add(jsonObject1.getString("name"));
//data1 = jsonObject1.getString("name");
// Log.d("hello ",data1);
JSONArray jsonArray = jsonObject1.getJSONArray("children");
// JSONObject jsonObject2 = jsonObject1.getJSONObject("children");
for(int j=0;j<jsonArray.length();j++){
JSONObject jsonObject2 = jsonArray.getJSONObject(j);
arraylist2.add(jsonObject2.getString("name"));
// data2 = jsonObject2.getString("name");
JSONArray jsonArray1 = jsonObject2.getJSONArray("children_lv3");
for(int k=0;k<jsonArray1.length();k++){
JSONObject jsonObject3 = jsonArray1.getJSONObject(k);
arraylist3.add(jsonObject3.getString("name"));
arrayList4.add(jsonObject3.getString("href"));
/* data3 = jsonObject3.getString("name");
data4 = jsonObject3.getString("href"); */
}
arrayList5.add(jsonObject2.getString("href"));
// data5 = jsonObject2.getString("href");
}
}
}
}catch(IOException e){
Log.e("Error IOException :",e.getMessage());
}catch (JSONException e){
Log.e("Error JSONException",e.getMessage());
}
return null;
}
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
dialog.dismiss();
Log.d("Counter value",""+cnt);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
if(id == R.id.action_search){
Toast.makeText(getApplicationContext(), "Search action is selected!", Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
/* public void onDrawerItemSelected(View view, int position) {
displayView(position);
}
private void displayView(int position) {
Fragment fragment = null;
String title = getString(R.string.app_name);
switch (position) {
case 0:
fragment = new HomeFragment();
title = getString(R.string.title_home);
break;
case 1:
fragment = new FriendsFragment();
title = getString(R.string.title_friends);
break;
case 2:
fragment = new MessagesFragment();
title = getString(R.string.title_messages);
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container_body, fragment);
fragmentTransaction.commit();
// set the toolbar title
getSupportActionBar().setTitle(title);
}
}*/}
My ExpandableListAdapter.java is here:-
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;
}}
My activity_main.xml is here:-
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:id="@+id/container_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include
android:id="@+id/toolbar"
layout="@layout/toolbar" />
</LinearLayout>
<FrameLayout
android:id="@+id/container_body"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
<ExpandableListView
android:id="@+id/lvExp"
android:layout_height="match_parent"
android:layout_width="260dp"
android:layout_gravity="start"/>
<!-- <fragment
android:id="@+id/fragment_navigation_drawer"
android:name="com.android.ShoppingMazza.activity.ExpandableListAdapter"
android:layout_width="@dimen/nav_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="start"
app:layout="@layout/fragment_navigation_drawer"
tools:layout="@layout/fragment_navigation_drawer" /> -->
</android.support.v4.widget.DrawerLayout>
解决方案
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ExpandableListView
android:layout_width="fill_parent"
android:id="@+id/ParentLevel"
android:groupIndicator="@null"
android:layout_height="fill_parent">
</ExpandableListView>
</LinearLayout>
MainActivity.Java
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.LinearLayout.LayoutParams;
public class Home extends Activity
{
ExpandableListView explvlist;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
explvlist = (ExpandableListView)findViewById(R.id.ParentLevel);
explvlist.setAdapter(new ParentLevel());
}
public class ParentLevel extends BaseExpandableListAdapter
{
@Override
public Object getChild(int arg0, int arg1)
{
return arg1;
}
@Override
public long getChildId(int groupPosition, int childPosition)
{
return childPosition;
}
@Override
public View getChildView(int groupPosition, int childPosition,boolean isLastChild, View convertView, ViewGroup parent)
{
CustExpListview SecondLevelexplv = new CustExpListview(Home.this);
SecondLevelexplv.setAdapter(new SecondLevelAdapter());
SecondLevelexplv.setGroupIndicator(null);
return SecondLevelexplv;
}
@Override
public int getChildrenCount(int groupPosition)
{
return 3;
}
@Override
public Object getGroup(int groupPosition)
{
return groupPosition;
}
@Override
public int getGroupCount()
{
return 5;
}
@Override
public long getGroupId(int groupPosition)
{
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent)
{
TextView tv = new TextView(Home.this);
tv.setText("->FirstLevel");
tv.setBackgroundColor(Color.BLUE);
tv.setPadding(10, 7, 7, 7);
return tv;
}
@Override
public boolean hasStableIds()
{
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition)
{
return true;
}
}
public class CustExpListview extends ExpandableListView
{
int intGroupPosition, intChildPosition, intGroupid;
public CustExpListview(Context context)
{
super(context);
}
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
widthMeasureSpec = MeasureSpec.makeMeasureSpec(960, MeasureSpec.AT_MOST);
heightMeasureSpec = MeasureSpec.makeMeasureSpec(600, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
public class SecondLevelAdapter extends BaseExpandableListAdapter
{
@Override
public Object getChild(int groupPosition, int childPosition)
{
return 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)
{
TextView tv = new TextView(Home.this);
tv.setText("child");
tv.setPadding(15, 5, 5, 5);
tv.setBackgroundColor(Color.YELLOW);
tv.setLayoutParams(new ListView.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
return tv;
}
@Override
public int getChildrenCount(int groupPosition)
{
return 5;
}
@Override
public Object getGroup(int groupPosition)
{
return groupPosition;
}
@Override
public int getGroupCount()
{
return 1;
}
@Override
public long getGroupId(int groupPosition)
{
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,View convertView, ViewGroup parent)
{
TextView tv = new TextView(Home.this);
tv.setText("-->Second Level");
tv.setPadding(12, 7, 7, 7);
tv.setBackgroundColor(Color.RED);
return tv;
}
@Override
public boolean hasStableIds()
{
// TODO Auto-generated method stub
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition)
{
// TODO Auto-generated method stub
return true;
}
}
}
这篇关于如何添加三个级别的ListView在ExpandableListView在安卓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!