Expandablelistview用后详解

lvKecheng = (PullToRefreshExpandableListView) view.findViewById(R.id.lv_kecheng);
lvKecheng.setMode(PullToRefreshBase.Mode.PULL_FROM_START);//向下拉刷新
lvKecheng.setOnRefreshListener(this);
lv_kecheng = (ExpandableListView) lvKecheng.getRefreshableView();
lv_kecheng.setGroupIndicator(null);//去除ExpandableListView自带箭头
//lv_kecheng.setDivider(null);//去除ExpandableListView分割线
lv_kecheng.setSelector(android.R.color.transparent);//选中时的颜色（transparent-透明）
lv_kecheng.setOnGroupClickListener(this);//父级监听
lv_kecheng.setOnChildClickListener(this);//子级监听
//点开正在点的分组关闭其他分组
lv_kecheng.setOnGroupExpandListener(new ExpandableListView.OnGroupExpandListener() {
@Override
public void onGroupExpand(int groupPosition) {
for (int i = 0, count =lv_kecheng
.getExpandableListAdapter().getGroupCount(); i < count; i++) {
if (groupPosition != i) {// 关闭其他分组

lv_kecheng.collapseGroup(i);
}
}
}
});

@Override
public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
//lv_kecheng.expandGroup(groupPosition);//展开
//lv_kecheng.collapseGroup(groupPosition);//关闭
return true;//false为展开--true为关闭
}

v_kecheng.isGroupExpanded(groupPosition)

package com.dearedu.cloudroom.fragment;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;

import com.dearedu.cloudroom.R;
import com.dearedu.cloudroom.base.BaseContentFragment;
import com.dearedu.cloudroom.bean.KechengBean;
import com.dearedu.cloudroom.ui.ContentActivity;
import com.dearedu.cloudroom.ui.LoginActivity;
import com.dearedu.cloudroom.ui.PlayActivity;
import com.dearedu.cloudroom.utils.Constants;
import com.dearedu.cloudroom.utils.L;
import com.dearedu.cloudroom.utils.UIUtils;
import com.google.gson.Gson;
import com.google.gson.JsonSyntaxException;
import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshExpandableListView;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.ViewUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.lidroid.xutils.http.client.HttpRequest;

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

/**
* 课程-Fragment
*/
public class KeChengContentFragment extends BaseContentFragment implements RadioGroup.OnCheckedChangeListener,
PullToRefreshBase.OnRefreshListener<ExpandableListView>,
ExpandableListView.OnChildClickListener {

private RadioButton kechengYuwen;
private RadioButton kechengShuxue;
private RadioButton kechengYingyu;
private RadioButton kechengWuli;
private RadioButton kechengHuaxue;
private RadioButton kechengLishi;
private RadioButton kechengDili;
private RadioButton kechengShengwu;
private RadioButton kechengZhengzhi;
private RadioGroup kechengRg;
private String xueke;
private ContentActivity mActivity;
private PullToRefreshExpandableListView lvKecheng;
private ExpandableListView lv_kecheng;
private List<KechengBean.Kecheng> dataList;

private ExpandableListAdapter kcAdapter;
private String state;
private KechengBean bean;
private String kechengUrl;

List<KechengBean.Kecheng> parentList = new ArrayList<KechengBean.Kecheng>();//父级
List<List<KechengBean.Kecheng>> allChildList = new ArrayList<List<KechengBean.Kecheng>>();//子级

@Override
public View initView() {
System.out.println("mContext_content : " + mContext);
View view = View.inflate(mContext, R.layout.fragment_kecheng_content, null);
kechengRg = (RadioGroup) view.findViewById(R.id.rg_kecheng);
kechengYuwen = (RadioButton) view.findViewById(R.id.rb_kecheng_yuwen);
kechengShuxue = (RadioButton) view.findViewById(R.id.rb_kecheng_shuxue);
kechengYingyu = (RadioButton) view.findViewById(R.id.rb_kecheng_yingyu);
kechengWuli = (RadioButton) view.findViewById(R.id.rb_kecheng_wuli);
kechengHuaxue = (RadioButton) view.findViewById(R.id.rb_kecheng_huaxue);
kechengLishi = (RadioButton) view.findViewById(R.id.rb_kecheng_lishi);
kechengDili = (RadioButton) view.findViewById(R.id.rb_kecheng_dili);
kechengShengwu = (RadioButton) view.findViewById(R.id.rb_kecheng_shengwu);
kechengZhengzhi = (RadioButton) view.findViewById(R.id.rb_kecheng_zhengzhi);

lvKecheng = (PullToRefreshExpandableListView) view.findViewById(R.id.lv_kecheng);
lvKecheng.setMode(PullToRefreshBase.Mode.PULL_FROM_START);//向下拉刷新
lvKecheng.setOnRefreshListener(this);
lv_kecheng = (ExpandableListView) lvKecheng.getRefreshableView();
lv_kecheng.setGroupIndicator(null);//去除ExpandableListView自带箭头
//lv_kecheng.setDivider(null);//去除ExpandableListView分割线
lv_kecheng.setSelector(android.R.color.transparent);//选中时的颜色（transparent-透明）
lv_kecheng.setOnChildClickListener(this);//子级监听
//点开正在点的分组关闭其他分组
lv_kecheng.setOnGroupExpandListener(new ExpandableListView.OnGroupExpandListener() {
@Override
public void onGroupExpand(int groupPosition) {
for (int i = 0, count =lv_kecheng
.getExpandableListAdapter().getGroupCount(); i < count; i++) {
if (groupPosition != i) {// 关闭其他分组
lv_kecheng.collapseGroup(i);
}
}
}
});

ViewUtils.inject(this, view);
return view;
}

@Override
public void initData() {

mActivity = (ContentActivity) mContext;
xueke = "";
kechengRg.setOnCheckedChangeListener(this);
SharedPreferences preferences = getActivity().getSharedPreferences(
LoginActivity.USER_FILE_NAME, Context.MODE_PRIVATE);
String mid = preferences.getString("mid", "");
//String kechengUrl = "http://client.app.dearedu.com/client.php?m=course&c=get_course_list&id=2268841";
//kechengUrl = "http://client.app.dearedu.com/client.php?m=course&c=get_course_list&id=" + mid;
kechengUrl = Constants.Kc_Zx;
L.s("-------kechengUrl-----------" + kechengUrl);
getDataFromNet(kechengUrl);

}

@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
switch (checkedId) {
case R.id.rb_kecheng_yuwen:
xueke = "1";
break;
case R.id.rb_kecheng_shuxue:
xueke = "2";
break;
case R.id.rb_kecheng_yingyu:
xueke = "3";
break;
case R.id.rb_kecheng_wuli:
xueke = "4";
break;
case R.id.rb_kecheng_huaxue:
xueke = "5";
break;
case R.id.rb_kecheng_shengwu:
xueke = "6";
break;
case R.id.rb_kecheng_dili:
xueke = "7";
break;
case R.id.rb_kecheng_lishi:
xueke = "8";
break;
case R.id.rb_kecheng_zhengzhi:
xueke = "9";
break;
}
mActivity.getKechengXuekeFragment(xueke);
if (kechengRg.getCheckedRadioButtonId() != -1) {
kechengRg.clearCheck();
}
}

/**
* 从网络获取数据
*/
private void getDataFromNet(String url) {
HttpUtils utils = new HttpUtils();
utils.send(HttpRequest.HttpMethod.POST, url, new RequestCallBack<String>() {
@Override
public void onSuccess(ResponseInfo<String> responseInfo) {
parseData(responseInfo.result);
}

@Override
public void onFailure(HttpException e, String s) {
Toast.makeText(getActivity(), "访问网络失败，请检查网络", Toast.LENGTH_SHORT).show();
}
});
}

/**
* 解析课程接口数据
*
* @param json
*/
public void parseData(String json) {
try {
Gson gson = new Gson();
bean = gson.fromJson(json, KechengBean.class);
state = bean.status;
String msg = bean.msg;
} catch (JsonSyntaxException e) {
e.printStackTrace();
}
if (state.equals("400")) {
UIUtils.runInMainThread(new Runnable() {
@Override
public void run() {
Toast.makeText(mContext, "老师尚未推荐课程", Toast.LENGTH_LONG).show();
}
});
} else if (state.equals("200")) {
dataList = bean.data;

if (kcAdapter == null) {
kcAdapter = new ExpandableListAdapter();
lv_kecheng.setAdapter(kcAdapter);

//                for (int i = 0; i < parentList.size(); i++) {
//                    if (parentList.get(i).subject_id.equals("5")) {// 传过来的值
//                        lv_kecheng.expandGroup(i);
//                    }
//                }

} else {
kcAdapter.notifyDataSetChanged();
}

} else {
Toast.makeText(mContext, "老师尚未推荐课程", Toast.LENGTH_LONG).show();
}
}

@Override
public void onRefresh(PullToRefreshBase<ExpandableListView> refreshView) {

HttpUtils utils = new HttpUtils();
L.s("zztest", kechengUrl);
utils.send(HttpRequest.HttpMethod.POST, kechengUrl, new RequestCallBack<String>() {
@Override
public void onSuccess(ResponseInfo<String> responseInfo) {
try {
Gson gson = new Gson();
KechengBean bean = gson.fromJson(responseInfo.result, KechengBean.class);
String state = bean.status;
String msg = bean.msg;

if (state.equals("400")) {
UIUtils.runInMainThread(new Runnable() {
@Override
public void run() {
Toast.makeText(mContext, "请求异常，请稍后重试", Toast.LENGTH_SHORT).show();
}
});
} else if (state.equals("200")) {
//给list赋值
dataList = bean.data;
kcAdapter.notifyDataSetChanged();
lvKecheng.onRefreshComplete();
} else {
Toast.makeText(mContext, "请求异常，请稍后重试", Toast.LENGTH_SHORT).show();
}
} catch (JsonSyntaxException e) {
e.printStackTrace();
}
}

@Override
public void onFailure(HttpException e, String s) {
Toast.makeText(getActivity(), "访问网络失败，请检查网络", Toast.LENGTH_SHORT).show();
}
});
}

@Override
public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
String subjectId = allChildList.get(groupPosition).get(childPosition).subject_id;
String courseId = allChildList.get(groupPosition).get(childPosition).course_id;
Intent intent = new Intent(getActivity(), PlayActivity.class);
Bundle bundle = new Bundle();
bundle.putString("id", courseId);
bundle.putString("subject_id", subjectId);
intent.putExtras(bundle);
intent.setAction("kecheng");
startActivity(intent);
return false;//false为展开--true为关闭
}

//--------------------------------------------------------

public class ExpandableListAdapter extends BaseExpandableListAdapter {
List<KechengBean.Kecheng> childList1 = new ArrayList<KechengBean.Kecheng>();
List<KechengBean.Kecheng> childList2 = new ArrayList<KechengBean.Kecheng>();
List<KechengBean.Kecheng> childList3 = new ArrayList<KechengBean.Kecheng>();
List<KechengBean.Kecheng> childList4 = new ArrayList<KechengBean.Kecheng>();
List<KechengBean.Kecheng> childList5 = new ArrayList<KechengBean.Kecheng>();
List<KechengBean.Kecheng> childList6 = new ArrayList<KechengBean.Kecheng>();
List<KechengBean.Kecheng> childList7 = new ArrayList<KechengBean.Kecheng>();
List<KechengBean.Kecheng> childList8 = new ArrayList<KechengBean.Kecheng>();
List<KechengBean.Kecheng> childList9 = new ArrayList<KechengBean.Kecheng>();

public ExpandableListAdapter() {

for (int i = 0; i < dataList.size(); i++) {
if (dataList.get(i).kc_level.equals("1")) {
KechengBean.Kecheng parentData = new KechengBean().new Kecheng();
parentData = dataList.get(i);
parentList.add(parentData);
}

if (!dataList.get(i).kc_level.equals("1")) {

if (dataList.get(i).subject_id.equals("1")) {
childList1.add(dataList.get(i));
}
if (dataList.get(i).subject_id.equals("2")) {
childList2.add(dataList.get(i));
}
if (dataList.get(i).subject_id.equals("3")) {
childList3.add(dataList.get(i));
}
if (dataList.get(i).subject_id.equals("4")) {
childList4.add(dataList.get(i));
}
if (dataList.get(i).subject_id.equals("5")) {
childList5.add(dataList.get(i));
}
if (dataList.get(i).subject_id.equals("6")) {
childList6.add(dataList.get(i));
}
if (dataList.get(i).subject_id.equals("7")) {
childList7.add(dataList.get(i));
}
if (dataList.get(i).subject_id.equals("8")) {
childList8.add(dataList.get(i));
}
if (dataList.get(i).subject_id.equals("9")) {
childList9.add(dataList.get(i));
}
}

}
for (int i = 0; i < parentList.size(); i++) {
if (parentList.get(i).subject_id.equals("1")) {
allChildList.add(childList1);
}
if (parentList.get(i).subject_id.equals("2")) {
allChildList.add(childList2);
}
if (parentList.get(i).subject_id.equals("3")) {
allChildList.add(childList3);
}
if (parentList.get(i).subject_id.equals("4")) {
allChildList.add(childList4);
}
if (parentList.get(i).subject_id.equals("5")) {
allChildList.add(childList5);
}
if (parentList.get(i).subject_id.equals("6")) {
allChildList.add(childList6);
}
if (parentList.get(i).subject_id.equals("7")) {
allChildList.add(childList7);
}
if (parentList.get(i).subject_id.equals("8")) {
allChildList.add(childList8);
}
if (parentList.get(i).subject_id.equals("9")) {
allChildList.add(childList9);
}
}

}

@Override
public int getGroupCount() {
// TODO Auto-generated method stub
return parentList.size();
}

@Override
public int getChildrenCount(int groupPosition) {
// TODO Auto-generated method stub
return allChildList.get(groupPosition).size();
}

@Override
public Object getGroup(int groupPosition) {
// TODO Auto-generated method stub
return parentList.get(groupPosition);
}

@Override
public Object getChild(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return allChildList.get(groupPosition).get(childPosition);

}

@Override
public long getGroupId(int groupPosition) {
// TODO Auto-generated method stub
return groupPosition;
}

@Override
public long getChildId(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return childPosition;
}

@Override
public boolean hasStableIds() {
// TODO Auto-generated method stub
return false;
}

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

KechengViewHolder mHolder = null;
if (convertView == null) {
convertView = View.inflate(mContext, R.layout.fragment_kecheng_content_item_group, null);
mHolder = new KechengViewHolder();
mHolder.lv_kc= (LinearLayout) convertView.findViewById(R.id.lv_kc);
mHolder.tv_kecheng_item_chakan = (ImageView) convertView
.findViewById(R.id.tv_kecheng_item_chakan);
mHolder.tv_kecheng_item_chakan2 = (ImageView) convertView
.findViewById(R.id.tv_kecheng_item_chakan2);
mHolder.tv_kecheng_item_kemu = (TextView) convertView
.findViewById(R.id.tv_kecheng_item_kemu);
mHolder.tv_kecheng_item_kecheng = (TextView) convertView
.findViewById(R.id.tv_kecheng_item_kecheng);
mHolder.tv_kecheng_item_sucai = (TextView) convertView
.findViewById(R.id.tv_kecheng_item_sucai);
mHolder.tv_kecheng_item_weike = (TextView) convertView.findViewById(R.id.tv_kecheng_item_weike);
mHolder.tv_kecheng_item_lianxi = (TextView) convertView.findViewById(R.id.tv_kecheng_item_lianxi);
convertView.setTag(mHolder);
} else {
mHolder = (KechengViewHolder) convertView.getTag();
}
//KechengBean.Kecheng dataItem = parentList.get(groupPosition);
KechengBean.Kecheng dataItem = (KechengBean.Kecheng) getGroup(groupPosition);
String subName = dataItem.sub_name;
String title = dataItem.title;
String suTotal = dataItem.su_total;
String vTotal = dataItem.v_total;
String testTotal = dataItem.test_total;

mHolder.tv_kecheng_item_kemu.setText(subName);
mHolder.tv_kecheng_item_kecheng.setText(title);
mHolder.tv_kecheng_item_sucai.setText(suTotal);
mHolder.tv_kecheng_item_weike.setText(vTotal);
mHolder.tv_kecheng_item_lianxi.setText(testTotal);
mHolder.tv_kecheng_item_chakan.setTag(groupPosition);
if (isExpanded) {
mHolder.tv_kecheng_item_chakan2.setImageDrawable(mContext.getResources().getDrawable(R.drawable.a));
} else {
mHolder.tv_kecheng_item_chakan2.setImageDrawable(mContext.getResources().getDrawable(R.drawable.b));
}
mHolder.lv_kc.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String subjectId = parentList.get(groupPosition).subject_id;
String courseId = parentList.get(groupPosition).course_id;
Intent intent = new Intent(getActivity(), PlayActivity.class);
Bundle bundle = new Bundle();
bundle.putString("id", courseId);
bundle.putString("subject_id", subjectId);
intent.putExtras(bundle);
intent.setAction("kecheng");
startActivity(intent);
}
});

return convertView;

}

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

KechengViewHolder mHolder = null;
if (convertView == null) {
convertView = View.inflate(mContext, R.layout.fragment_kecheng_content_item_view, null);
mHolder = new KechengViewHolder();
mHolder.tv_kecheng_item_chakan = (ImageView) convertView
.findViewById(R.id.tv_kecheng_item_chakan);
mHolder.tv_kecheng_item_kemu = (TextView) convertView
.findViewById(R.id.tv_kecheng_item_kemu);
mHolder.tv_kecheng_item_kecheng = (TextView) convertView
.findViewById(R.id.tv_kecheng_item_kecheng);
mHolder.tv_kecheng_item_sucai = (TextView) convertView
.findViewById(R.id.tv_kecheng_item_sucai);
mHolder.tv_kecheng_item_weike = (TextView) convertView.findViewById(R.id.tv_kecheng_item_weike);
mHolder.tv_kecheng_item_lianxi = (TextView) convertView.findViewById(R.id.tv_kecheng_item_lianxi);
convertView.setTag(mHolder);
} else {
mHolder = (KechengViewHolder) convertView.getTag();
}

//KechengBean.Kecheng dataItem = allChildList.get(groupPosition).get(childPosition);
KechengBean.Kecheng dataItem = (KechengBean.Kecheng) getChild(groupPosition, childPosition);
String subName = dataItem.sub_name;
String title = dataItem.title;
String suTotal = dataItem.su_total;
String vTotal = dataItem.v_total;
String testTotal = dataItem.test_total;

mHolder.tv_kecheng_item_kemu.setText(subName);
mHolder.tv_kecheng_item_kecheng.setText(title);
mHolder.tv_kecheng_item_sucai.setText(suTotal);
mHolder.tv_kecheng_item_weike.setText(vTotal);
mHolder.tv_kecheng_item_lianxi.setText(testTotal);

mHolder.tv_kecheng_item_chakan.setTag(childPosition);
return convertView;
}

@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return true;
}
}

//========================================================

class KechengViewHolder {
public TextView tv_kecheng_item_kemu;
public TextView tv_kecheng_item_kecheng;
public TextView tv_kecheng_item_sucai;
public TextView tv_kecheng_item_weike;
public TextView tv_kecheng_item_lianxi;
public ImageView tv_kecheng_item_chakan;
public ImageView tv_kecheng_item_chakan2;
public LinearLayout lv_kc;
}
}