android中带有jsonarray对象的expandablelistview
嗨，我有一个类似这样的json响应对象android中带有jsonarray对象的expandablelistview,android,Android,嗨，我有一个类似这样的json响应对象 [ { "name": "Forbes", "guid": "aa8ee769628871feea7081e8c9b9ac1a", "id": "1", "region": "U.S National Publications", "state": "US" }, { "name": "The Oregonian", "g
[
{
"name": "Forbes",
"guid": "aa8ee769628871feea7081e8c9b9ac1a",
"id": "1",
"region": "U.S National Publications",
"state": "US"
},
{
"name": "The Oregonian",
"guid": "f0511e35b43241c641921221efcc4ae8",
"id": "2",
"region": "U.S Local Publications",
"state": "Oregon"
},
{
"name": "Chicago Tribune",
"guid": "fcbfc403c4131b3361bf2ebeee2a743d",
"id": "3",
"region": "U.S Local Publications",
"state": "Illinois"
},
{
"name": "Detroit Free Press",
"guid": "dc2e708f3d2d09b0f082cb1550535b99",
"id": "4",
"region": "U.S Local Publications",
"state": "Michigan"
},
{
"name": "The Philadelphia Inquirer",
"guid": "23df2f82e304a7bd2f2b0a8f68a983a4",
"id": "5",
"region": "U.S Local Publications",
"state": "Pennsylvania"
}
]
这里的“region”是组，“name”是子级。有人能帮助在android代码中显示这一点吗。对于android中可扩展的listview，组应该是下拉列表，子级应该选中TextView。尝试使用HashMap，字符串作为键，ArrayList HashMap作为值：
String jsonResponse ="[{\"name\":\"Forbes\",\"guid\":\"aa8ee769628871feea7081e8c9b9ac1a\",\"id\":\"1\",\"region\":\"U.S National Publications\",\"state\":\"US\"},{\"name\":\"The Oregonian\",\"guid\":\"f0511e35b43241c641921221efcc4ae8\",\"id\":\"2\",\"region\":\"U.S Local Publications\",\"state\":\"Oregon\"},{\"name\":\"Chicago Tribune\",\"guid\":\"fcbfc403c4131b3361bf2ebeee2a743d\",\"id\":\"3\",\"region\":\"U.S Local Publications\",\"state\":\"Illinois\"},{\"name\":\"Detroit Free Press\",\"guid\":\"dc2e708f3d2d09b0f082cb1550535b99\",\"id\":\"4\",\"region\":\"U.S Local Publications\",\"state\":\"Michigan\"},{\"name\":\"The Philadelphia Inquirer\",\"guid\":\"23df2f82e304a7bd2f2b0a8f68a983a4\",\"id\":\"5\",\"region\":\"U.S Local Publications\",\"state\":\"Pennsylvania\"}]";
HashMap<String,ArrayList<HashMap<String,String>>> regionsHashMap = new HashMap<String, ArrayList<HashMap<String, String>>>();
try{
JSONArray jsonArray = new JSONArray(jsonResponse);
for(int i=0;i<jsonArray.length();i++){
if(regionsHashMap.containsKey(jsonArray.getJSONObject(i).getString("region"))){
ArrayList<HashMap<String,String>> regionList = regionsHashMap.get(jsonArray.getJSONObject(i).getString("region"));
HashMap<String,String> regionMap = new HashMap<String, String>();
regionMap.put("name",jsonArray.getJSONObject(i).getString("name"));
regionMap.put("guid",jsonArray.getJSONObject(i).getString("guid"));
regionMap.put("id",jsonArray.getJSONObject(i).getString("id"));
regionMap.put("region",jsonArray.getJSONObject(i).getString("region"));
regionMap.put("state",jsonArray.getJSONObject(i).getString("state"));
regionList.add(regionMap);
regionsHashMap.put(jsonArray.getJSONObject(i).getString("region"),regionList);
}else{
ArrayList<HashMap<String,String>> regionList = new ArrayList<HashMap<String, String>>();
HashMap<String,String> regionMap = new HashMap<String, String>();
regionMap.put("name",jsonArray.getJSONObject(i).getString("name"));
regionMap.put("guid",jsonArray.getJSONObject(i).getString("guid"));
regionMap.put("id",jsonArray.getJSONObject(i).getString("id"));
regionMap.put("region",jsonArray.getJSONObject(i).getString("region"));
regionMap.put("state",jsonArray.getJSONObject(i).getString("state"));
regionList.add(regionMap);
regionsHashMap.put(jsonArray.getJSONObject(i).getString("region"),regionList);
}
}
}catch (JSONException e){
e.printStackTrace();
}
Iterator it = regionsHashMap.entrySet().iterator();
while (it.hasNext()) {
Map.Entry pairs = (Map.Entry)it.next();
System.out.println("Region :: "+pairs.getKey());
ArrayList<HashMap<String,String>> regionList = (ArrayList<HashMap<String,String>>) pairs.getValue();
for(HashMap<String,String> region : regionList){
System.out.println("name : "+region.get("name"));
System.out.println("guid : "+region.get("guid"));
System.out.println("id : "+region.get("id"));
System.out.println("region : "+region.get("region"));
System.out.println("state : "+region.get("state"));
}
}
String jsonResponse=“[{”name\”：“Forbes\”，“guid\”：“aa8ee769628871feea7081ec9b9ac1a\”，“id\”：“1\”，“region\”：“美国国家出版物”，“state\”：“US\”，“{”name\”：“俄勒冈人\”，“guid\”：“F0511E35B43241C641921EFCC4AE8\”，“id\”，“2\”，“region\”，“美国国家出版物”，“俄勒冈地方出版物”：“Oregon\”，“Oregon\”芝加哥论坛报“，”guid“：”FCBFC403C4131B3361BF2EBEE2A743D“，”id“：”3“，”地区“：”美国地方出版物“，”州“：”伊利诺伊州“，”名称“：”底特律自由出版社“，”guid“：”DC2E708F3D2D09B082CB1550535B99“，”id“：”4“，”地区“：”美国地方出版物“，”州“，”密歇根州“，”guid:”费城“，”查询者姓名“，”23df2f82e304a7bd2f2b0a8f68a983a4\“，”id\“：”5\“，”地区\“：”美国地方出版物\“，”州\“：”宾夕法尼亚\“；
HashMap区域HashMap=新HashMap（）；
试一试{
JSONArray JSONArray=新的JSONArray（jsonResponse）；
对于（inti=0；i您可以像这样使用JSON
**这是HomeFragment java类**
导入java.util.ArrayList；
导入java.util.HashMap；
导入java.util.List；
导入org.json.JSONArray；
导入org.json.JSONException；
导入org.json.JSONObject；
导入android.app.Fragment；
导入android.app.ProgressDialog；
导入android.content.Intent；
导入android.os.AsyncTask；
导入android.os.Bundle；
导入android.util.Log；
导入android.view.LayoutInflater；
导入android.view.view；
导入android.view.ViewGroup；
导入android.widget.ExpandableListAdapter；
导入android.widget.ExpandableListView；
导入android.widget.ExpandableListView.OnChildClickListener；
导入android.widget.ExpandableListView.OnGroupClickListener；
导入android.widget.ExpandableListView.OnGroupCollapseListener；
导入android.widget.ExpandableListView.OnGroupExpandListener；
导入android.widget.TextView；
导入android.widget.Toast；
公共类HomeFragment扩展了片段{
专用静态字符串url=”http://www.androidbegin.com/tutorial/jsonparsetutorial.txt";
私有进程对话框mprocessingdialog；
私人文本视图tv\u welcomeuser，tv\u最新更新；
私有ExpandableListAdapter ExpandableListAdapter；
私有可扩展ListView exp_leaseoffer；
私有列表listDataHeader；
私有视图rootView；
私有HashMap listDataChild；
@凌驾
创建视图上的公共视图（布局、充气机、视图组容器、，
Bundle savedInstanceState）{
rootView=充气机。充气（R.layout.wellcome\u页面，容器，假）；
tv_welcomeuser=（TextView）rootView.findviewbyd（R.id.tv_welcomeuser）；
tv\u recentupdate=（文本视图）根视图
.findviewbyd（R.id.tv\u最新更新）；
exp_leaseoffer=（ExpandableListView）rootView.findViewById（R.id.lvExp）；
新下载jason（）.execute（）；
返回rootView；
}
私有类下载任务{
@凌驾
受保护的void onPreExecute（）{
//TODO自动生成的方法存根
super.onPreExecute（）；
MPProcessingDialog=新建ProgressDialog（getActivity（））；
mpProcessingDialog.setTitle（“请稍候…”）；
mpProcessingDialog.setMessage（“加载”）；
mpProcessingDialog.setUndeterminate（false）；
mpProcessingDialog.show（）；
}
@凌驾
受保护的Void doInBackground（Void…arg0）{
//TODO自动生成的方法存根
listDataHeader=新的ArrayList（）；
JSONParser jp=新的JSONParser（）；
字符串jsonstr=jp.makeServiceCall（url，JSONParser.GET）；
Log.d（“JSONURL视图”，jsonstr）；
if（jsonstr！=null）{
listDataHeader=新的ArrayList（）；
listDataChild=newHashMap（）；
试一试{
JSONObject jobj=新的JSONObject（jsonstr）；
JSONArray jarray=jobj.getJSONArray（“世界人口”）；
for（inthk=0；hkYOU CAN USE JSON LIKE THIS
**This is HomeFragment java class**
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Fragment;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.ExpandableListView.OnGroupClickListener;
import android.widget.ExpandableListView.OnGroupCollapseListener;
import android.widget.ExpandableListView.OnGroupExpandListener;
import android.widget.TextView;
import android.widget.Toast;
public class HomeFragment extends Fragment {
private static String url = "http://www.androidbegin.com/tutorial/jsonparsetutorial.txt";
private ProgressDialog mprocessingdialog;
private TextView tv_welcomeuser, tv_recentupdate;
private ExpandableListAdapter expandableListAdapter;
private ExpandableListView exp_leaseoffer;
private List<String> listDataHeader;
private View rootView;
private HashMap<String, List<String>> listDataChild;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.wellcome_page, container, false);
tv_welcomeuser = (TextView) rootView.findViewById(R.id.tv_welcomeuser);
tv_recentupdate = (TextView) rootView
.findViewById(R.id.tv_recentupdate);
exp_leaseoffer = (ExpandableListView) rootView.findViewById(R.id.lvExp);
new DownloadJason().execute();
return rootView;
}
private class DownloadJason extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
mprocessingdialog = new ProgressDialog(getActivity());
mprocessingdialog.setTitle("Please Wait..");
mprocessingdialog.setMessage("Loading");
mprocessingdialog.setIndeterminate(false);
mprocessingdialog.show();
}
@Override
protected Void doInBackground(Void... arg0) {
// TODO Auto-generated method stub
listDataHeader = new ArrayList<String>();
JSONParser jp = new JSONParser();
String jsonstr = jp.makeServiceCall(url, JSONParser.GET);
Log.d("Json url view", jsonstr);
if (jsonstr != null) {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
try {
JSONObject jobj = new JSONObject(jsonstr);
JSONArray jarray = jobj.getJSONArray("worldpopulation");
for (int hk = 0; hk < jarray.length(); hk++) {
JSONObject d = jarray.getJSONObject(hk);
// Adding Header data
listDataHeader.add(d.getString("country"));
// Adding child data for lease offer
List<String> lease_offer = new ArrayList<String>();
lease_offer.add(d.getString("country") + "'s Rank is : "
+ d.getString("rank"));
lease_offer.add("And Population is "+d.getString("population"));
// Header into Child data
listDataChild.put(listDataHeader.get(hk), lease_offer);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else {
Toast.makeText(getActivity(),
"Please Check internet Connection", Toast.LENGTH_SHORT)
.show();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
mprocessingdialog.dismiss();
expandableListAdapter = new info.tranetech.adurec.fragments.Expandable_adapter(
getActivity(), listDataHeader, listDataChild);
Log.i("groups", listDataHeader.toString());
Log.i("details", listDataChild.toString());
exp_leaseoffer.setAdapter(expandableListAdapter);
exp_leaseoffer.setOnGroupClickListener(new OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {
// TODO Auto-generated method stub
return false;
}
});
// Listview Group expanded listener
exp_leaseoffer
.setOnGroupExpandListener(new OnGroupExpandListener() {
@Override
public void onGroupExpand(int groupPosition) {
// Toast.makeText(getActivity().getApplicationContext(),
// listDataHeader.get(groupPosition) + " Expanded",
// Toast.LENGTH_SHORT).show();
}
});
exp_leaseoffer
.setOnGroupCollapseListener(new OnGroupCollapseListener() {
@Override
public void onGroupCollapse(int groupPosition) {
Toast.makeText(
getActivity().getApplicationContext(),
listDataHeader.get(groupPosition)
+ " Collapsed", Toast.LENGTH_SHORT)
.show();
}
});
exp_leaseoffer.setOnChildClickListener(new OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
// Toast.makeText(
// getActivity().getApplicationContext(),
// listDataHeader.get(groupPosition)
// + " : "
// + listDataChild.get(
// listDataHeader.get(groupPosition)).get(
// childPosition), Toast.LENGTH_SHORT)
// .show();
// Intent ilk = new Intent(getActivity(),
// Lease_Offer_one.class);
// startActivity(ilk);
return false;
}
});
}
}
// public Boolean isWifiAvailable() {
//
// try {
// ConnectivityManager connectivityManager = (ConnectivityManager)
// getActivity()
// .getSystemService(Context.CONNECTIVITY_SERVICE);
// NetworkInfo wifiInfo = connectivityManager
// .getNetworkInfo(ConnectivityManager.TYPE_WIFI);
//
// if (wifiInfo.isConnected()) {
// return true;
// }
// } catch (Exception e) {
// e.printStackTrace();
// }
// return false;
// }
// public boolean isNetworkAvailable() {
// ConnectivityManager connectivityManager = (ConnectivityManager)
// getActivity()
// .getSystemService(Context.CONNECTIVITY_SERVICE);
// NetworkInfo activeNetworkInfo = connectivityManager
// .getActiveNetworkInfo();
// return activeNetworkInfo != null && activeNetworkInfo.isConnected();
// }
}
**This is Expandable_adapter java class**
import java.util.HashMap;
import java.util.List;
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;
public class Expandable_adapter extends BaseExpandableListAdapter {
private Context _context;
private List<String> _listDataHeader;
private HashMap<String, List<String>> _listDataChild;
public Expandable_adapter(Context context, List<String> listDataHeader,
HashMap<String, List<String>> listDataChild) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listDataChild;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.get(childPosition);
}
@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 layoutInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.list_child, null);
}
TextView expandedListTextView = (TextView) convertView
.findViewById(R.id.tv_listchild);
expandedListTextView.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 layoutInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.list_group, null);
}
TextView listTitle = (TextView) convertView
.findViewById(R.id.tv_listtitle);
listTitle.setTypeface(null, Typeface.BOLD);
listTitle.setText(headerTitle);
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
**xml wellcome_page**
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="@drawable/background_welcome" >
<LinearLayout
android:id="@+id/header"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:background="@drawable/bottom_bar"
android:orientation="horizontal" >
</LinearLayout>
<TextView
android:id="@+id/tv_welcomeuser"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="8dp"
android:gravity="center"
android:text="WELCOME USER"
android:textColor="#FFFFFF"
android:textSize="16sp"
tools:ignore="HardcodedText" />
<LinearLayout
android:id="@+id/eeeee"
android:layout_width="200dp"
android:layout_height="30dp"
android:layout_below="@+id/tv_welcomeuser"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:background="@drawable/edit_text"
android:gravity="center" >
<TextView
android:id="@+id/tv_recentupdate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:paddingLeft="20dp"
android:paddingRight="20dp"
android:singleLine="true"
android:text="RECENT UPDATES"
android:textColor="#FFFFFF"
android:textSize="18sp"
tools:ignore="HardcodedText" />
</LinearLayout>
<RelativeLayout
android:id="@+id/expl"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/header"
android:layout_alignParentLeft="true"
android:layout_below="@+id/eeeee"
android:layout_marginTop="20dp" >
<LinearLayout
android:id="@+id/textLin"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:gravity="center"
android:orientation="vertical"
android:weightSum="4" >
<TextView
android:id="@+id/tv_adurec"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/lvExp"
android:layout_centerHorizontal="true"
android:layout_weight="1"
android:fontFamily="times_roman"
android:text=" Powered by "
android:textColor="#ffffff"
android:textSize="15dp"
tools:ignore="ObsoleteLayoutParam,HardcodedText,SpUsage" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/tv_adurec"
android:layout_centerVertical="true"
android:layout_marginBottom="10dp"
android:layout_weight="1"
android:text="ADUREC"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#ffffff"
tools:ignore="ObsoleteLayoutParam,HardcodedText" />
</LinearLayout>
<ExpandableListView
android:id="@+id/lvExp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/textLin"
android:listSelector="@drawable/buttons_effacts"
android:divider="@color/list_divider"
android:dividerHeight="0.8dip"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
</ExpandableListView>
</RelativeLayout>
</RelativeLayout>
**list_child.xml **
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center">
<TextView
android:id="@+id/tv_listchild"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:paddingTop="10dp"
android:textSize="16sp"
android:gravity="center"
android:textColor="#7D1023"
android:background="#ffffff"
android:paddingBottom="10dp" />
</LinearLayout>
**list_group.xml**
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/tv_listtitle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/buttons_effacts"
android:padding="15dp"
android:gravity="center"
android:paddingLeft="?android:attr/expandableListPreferredItemPaddingLeft"
android:textColor="#ffffff"
android:textSize="16sp" />
</LinearLayout>