Java 如何使用JSON数组制作ExpandableListView
我想创建一个ExpandableListView，它从服务器（JSON数组）的响应中获取组及其子组的数据。 这是我的json：Java 如何使用JSON数组制作ExpandableListView,java,android,json,expandablelistview,Java,Android,Json,Expandablelistview,我想创建一个ExpandableListView，它从服务器（JSON数组）的响应中获取组及其子组的数据。 这是我的json： [ { " "begdate": "23/07/2013", "nama": "OPTIK INTERNASIONAL", "img_id": 2, "alamat": "Jl. Nasional No 23 Meulaboh", "enddate": "23/0
[
{
"
"begdate": "23/07/2013",
"nama": "OPTIK INTERNASIONAL",
"img_id": 2,
"alamat": "Jl. Nasional No 23 Meulaboh",
"enddate": "23/07/2015",
},
{
"begdate": "01/05/2013",
"nama": "EL JOHN SMOKING LOUNGE",
"img_id": 3,
"alamat": "Bandara Sultan Iskandar Muda, Banda Aceh",
"enddate": "30/04/2014",
},
{
"begdate": "09/11/2012",
"nama": "ESPRESSO COFFE",
"img_id": 2
"alamat": "JL. SOEKARNO HATTA No. 16-17, Simpang Dodi",
"enddate": "09/11/2014",
},
{
"begdate": "16/03/2012",
"nama": "LUZI PERFUME",
"img_id": 3,
"alamat": "JL. MATA IE KETAPANG II",
"enddate": "16/03/2014",
}
]
08-16 15:18:34.541: E/AndroidRuntime(416): FATAL EXCEPTION: main
08-16 15:18:34.541: E/AndroidRuntime(416): java.lang.IndexOutOfBoundsException: Invalid index 1, size is 0
08-16 15:18:34.541: E/AndroidRuntime(416): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:257)
08-16 15:18:34.541: E/AndroidRuntime(416): at java.util.ArrayList.get(ArrayList.java:311)
08-16 15:18:34.541: E/AndroidRuntime(416): at com.example.belajaraccordion.TerbaruSimasCard.fetchResponse(TerbaruSimasCard.java:106)
08-16 15:18:34.541: E/AndroidRuntime(416): at com.example.belajaraccordion.TerbaruSimasCard.access$1(TerbaruSimasCard.java:85)
08-16 15:18:34.541: E/AndroidRuntime(416): at com.example.belajaraccordion.TerbaruSimasCard$TerbaruAsyncTask.onPostExecute(TerbaruSimasCard.java:77)
08-16 15:18:34.541: E/AndroidRuntime(416): at com.example.belajaraccordion.TerbaruSimasCard$TerbaruAsyncTask.onPostExecute(TerbaruSimasCard.java:1)
08-16 15:18:34.541: E/AndroidRuntime(416): at android.os.AsyncTask.finish(AsyncTask.java:417)
08-16 15:18:34.541: E/AndroidRuntime(416): at android.os.AsyncTask.access$300(AsyncTask.java:127)
08-16 15:18:34.541: E/AndroidRuntime(416): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429)
08-16 15:18:34.541: E/AndroidRuntime(416): at android.os.Handler.dispatchMessage(Handler.java:99)
08-16 15:18:34.541: E/AndroidRuntime(416): at android.os.Looper.loop(Looper.java:123)
08-16 15:18:34.541: E/AndroidRuntime(416): at android.app.ActivityThread.main(ActivityThread.java:3683)
08-16 15:18:34.541: E/AndroidRuntime(416): at java.lang.reflect.Method.invokeNative(Native Method)
08-16 15:18:34.541: E/AndroidRuntime(416): at java.lang.reflect.Method.invoke(Method.java:507)
08-16 15:18:34.541: E/AndroidRuntime(416): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-16 15:18:34.541: E/AndroidRuntime(416): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
08-16 15:18:34.541: E/AndroidRuntime(416): at dalvik.system.NativeStart.main(Native Method)
public class TerbaruSimasCard extends Activity {
private ProgressDialog dialog;
private ArrayList<TerbaruModel>ListTerbaru;
private ArrayList<ArrayList<ArrayList<ChildTerbaru>>> ListChildTerbaru;
ListView list;
String phone1, begdate1, enddate1,img_id1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.terbarusimascard);
ListTerbaru= new ArrayList<TerbaruModel>();
ListChildTerbaru= new ArrayList<ArrayList<ArrayList<ChildTerbaru>>>();
new TerbaruAsyncTask().execute();
}
public class TerbaruAsyncTask extends AsyncTask<Void, Void, String> {
String url = ("http://www.domain.com/123");
public TerbaruAsyncTask() {
this.url=url;
}
protected void onPreExecute (){
super.onPreExecute();
dialog = ProgressDialog.show(TerbaruSimasCard.this,"", "melakukan pengambilan data...");
}
@Override
protected String doInBackground(Void... params) {
String result = "";
try {
result= Connection.get(url);
} catch (Exception e){
result = "";
Log.d("test", e.getMessage());
}
return result;
}
@Override
protected void onPostExecute (String result){
super.onPostExecute(result);
fetchResponse(result.replace("\n","").trim());
dialog.dismiss();
}
}
private void fetchResponse (String result){
if (!result.equals("")){
try {
JSONArray jsonArray = new JSONArray(result);
TerbaruModel LT=null;
ChildTerbaru CT=null;
for (int i= 0; i < jsonArray.length(); i++) {
JSONObject jsonObject= jsonArray.getJSONObject (i);
LT= new TerbaruModel (
jsonObject.optString("img_id"),
jsonObject.optString("nama"),
jsonObject.optString("alamat")
);
ListTerbaru.add(LT);
for (int j= 0; j <jsonArray.length(); j++) {
CT= new ChildTerbaru (
jsonObject.optString("begdate"),
jsonObject.optString("enddate")
);
ListChildTerbaru.get(i).get(j).add(CT);
}
ExpandableListView list = (ExpandableListView) findViewById(R.id.ExpandableListView01);
TerbaruAdapter adapter = new TerbaruAdapter(this, ListTerbaru,ListChildTerbaru);
list.setAdapter(adapter);
}
} catch (JSONException e){
e.printStackTrace();
}
}
}
}
公共类TerbaruSimasCard扩展活动{
私人对话；
私人Arraylistterbaru；
私人ArrayList ListChildTerbaru；
列表视图列表；
字符串phone1，begdate1，enddate1，img_id1；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.terbarusimascard）；
ListTerbaru=newarraylist（）；
ListChildTerbaru=新的ArrayList（）；
新建TerbaruAsyncTask（）.execute（）；
}
公共类TerbaruAsyncTask扩展了AsyncTask{
字符串url=（“http://www.domain.com/123");
公共TerbaruAsyncTask（）{
this.url=url；
}
受保护的void onPreExecute（）{
super.onPreExecute（）；
dialog=ProgressDialog.show（TerbaruSimasCard.this，“，”melakukan pengambilan data…）；
}
@凌驾
受保护字符串doInBackground（无效…参数）{
字符串结果=”；
试一试{
结果=Connection.get（url）；
}捕获（例外e）{
结果=”；
Log.d（“test”，例如getMessage（））；
}
返回结果；
}
@凌驾
受保护的void onPostExecute（字符串结果）{
super.onPostExecute（结果）；
fetchResponse（result.replace（“\n”和“）.trim（））；
dialog.dismise（）；
}
}
私有void fetchResponse（字符串结果）{
如果（！result.equals（“”）{
试一试{
JSONArray JSONArray=新JSONArray（结果）；
TerbaruModel LT=null；
ChildTerbaru CT=null；
for（int i=0；i
public class TerbaruAdapter extends BaseExpandableListAdapter{
Context context;
ArrayList<TerbaruModel>ListTerbaru;
ArrayList<ArrayList<ChildTerbaru>> ListChildTerbaru;
int count;
public TerbaruAdapter (Context context, ArrayList<TerbaruModel>ListTerbaru,ArrayList<ArrayList<ChildTerbaru>> ListChildTerbaru){
this.context=context;
this.ListTerbaru=ListTerbaru;
this.ListChildTerbaru=ListChildTerbaru;
// this.count=ListTerbaru.size();
// this.count=ListChildTerbaru.size();
}
@Override
public boolean areAllItemsEnabled()
{
return true;
}
@Override
public ChildTerbaru getChild(int groupPosition, int childPosition) {
return ListChildTerbaru.get(groupPosition).get(childPosition);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild,View convertView, ViewGroup parent) {
ChildTerbaru childTerbaru = getChild(groupPosition, childPosition);
ViewHolder holder= null;
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.expandablelistview_child, null);
holder=new ViewHolder();
holder.begdate1=(TextView)convertView.findViewById(R.id.beg_date);
holder.enddate1=(TextView)convertView.findViewById(R.id.end_date);
convertView.setTag(holder);
}
else{
holder=(ViewHolder)convertView.getTag();
}
holder.begdate1.setText(childTerbaru.getBegDate());
holder.enddate1.setText(childTerbaru.getEndDate());
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return ListChildTerbaru.get(groupPosition).size();
}
@Override
public TerbaruModel getGroup(int groupPosition) {
return ListTerbaru.get(groupPosition);
}
@Override
public int getGroupCount() {
return ListTerbaru.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
TerbaruModel terbaruModel = (TerbaruModel) getGroup(groupPosition);
ViewHolder holder= null;
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.expandablelistview_group, null);
holder=new ViewHolder();
holder.nama=(TextView)convertView.findViewById(R.id.name);
holder.alamat=(TextView)convertView.findViewById(R.id.address);
convertView.setTag(holder);
}
else{
holder=(ViewHolder)convertView.getTag();
}
holder.nama.setText(terbaruModel.getNama());
holder.alamat.setText(terbaruModel.getAlamat());
return convertView;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public boolean isChildSelectable(int arg0, int arg1) {
return true;
}
static class ViewHolder{
TextView begdate1, enddate1,nama, alamat, imageid;
}
}
公共类TerbaruaAdapter扩展了BaseExpandableListAdapter{
语境；
ArrayListterbaru；
ArrayList ListChildTerbaru；
整数计数；
public TerbaruAdapter（上下文上下文、ArrayListListTerbaru、ArrayListChildTerbaru）{
this.context=context；
this.ListTerbaru=ListTerbaru；
this.ListChildTerbaru=ListChildTerbaru；
//this.count=ListTerbaru.size（）；
//this.count=ListChildTerbaru.size（）；
}
@凌驾
公共布尔值areAllItemsEnabled（）
{
返回true；
}
@凌驾
public ChildTerbaru getChild（int-groupPosition，int-childPosition）{
返回ListChildTerbaru.get（groupPosition）.get（childPosition）；
}
@凌驾
公共长getChildId（int-groupPosition，int-childPosition）{
返回子位置；
}
@凌驾
公共视图getChildView（int-groupPosition、int-childPosition、布尔isLastChild、视图convertView、视图组父级）{
ChildTerbaru ChildTerbaru=getChild（groupPosition，childPosition）；
ViewHolder=null；
if（convertView==null）{
LayoutInflater infalInflater=（LayoutInflater）context.getSystemService（context.LAYOUT\u INFLATER\u SERVICE）；
convertView=infalInflater.充气（R.layout.expandablelistview\u子项，空）；
holder=新的ViewHolder（）；
holder.begdate1=（TextView）convertView.findViewById（R.id.beg_date）；
holder.enddate1=（TextView）convertView.findViewById（R.id.end_date）；
convertView.setTag（支架）；
}
否则{
holder=（ViewHolder）convertView.getTag（）；
}
holder.begdate1.setText（childTerbaru.getBegDate（））；
holder.enddate1.setText（childTerbaru.getEndDate（））；
返回视图；
}
@凌驾
公共整数getChildrenCount（整数组位置）{
返回ListChildTerbaru.get（groupPosition.size（）；
}
@凌驾
公共TerbaruModel getGroup（int groupPosition）{
返回ListTerbaru.get（groupPosition）；
}
@凌驾
public int getGroupCount（）{
返回ListTerbaru.size（）；
}
@凌驾
公共长getGroupId（int-groupPosition）{
返回组位置；
}
@凌驾
公共视图getGroupView（int groupPosition、布尔isExpanded、视图convertView、视图组父级）{
TerbaruModel TerbaruModel=（TerbaruModel）getGroup（groupPosition）；
ViewHolder=null；
if（convertView==null）{
LayoutInflater infalInflater=（LayoutInflater）context.getSystemService（context.LAYOUT\u INFLATER\u SERVICE）；
convertView=infalInflater.充气（R.layout.expandablelistview\u组，空）；
holder=新的ViewHolder（）；
holder.nama=（TextView）convertView.findViewById（R.id.name）；
holder.alamat=（TextView）convertView.findViewById（R.id.address）；
convertView.setTag（支架）；
}
否则{
holder=（ViewHolder）convertView.getTag（）；
}
holder.nama.setText（terbaruModel.getNama（））；
holder.alamat.setText（terbaruModel.getAlamat（））；
返回视图；
}
@凌驾
公共布尔表ID（）{
返回true；
}
@凌驾
公共布尔值isChildSelectable（int arg0，int arg1）{
返回true；
}
静态类视窗夹{
文本视图begdate1，enddate1，na
for (int i= 0; i < jsonArray.length(); i++) {
JSONObject jsonObject= jsonArray.getJSONObject (i);
LT= new TerbaruModel (
jsonObject.optString("img_id"),
jsonObject.optString("nama"),
jsonObject.optString("alamat")
);
ListTerbaru.add(LT);
for (int j= 0; j <jsonArray.length(); j++) {
CT= new ChildTerbaru (
jsonObject.optString("begdate"),
jsonObject.optString("enddate")
);
ListChildTerbaru.get(i).get(j).add(CT);
}
public class TerbaruAdapter extends BaseExpandableListAdapter{
Context context;
ArrayList<TerbaruModel>ListTerbaru;
ArrayList<ArrayList<ChildTerbaru>> ListChildTerbaru;
int count;
public TerbaruAdapter (Context context, ArrayList<TerbaruModel>ListTerbaru,ArrayList<ArrayList<ChildTerbaru>> ListChildTerbaru){
this.context=context;
this.ListTerbaru=ListTerbaru;
this.ListChildTerbaru=ListChildTerbaru;
// this.count=ListTerbaru.size();
// this.count=ListChildTerbaru.size();
}
@Override
public boolean areAllItemsEnabled()
{
return true;
}
@Override
public ChildTerbaru getChild(int groupPosition, int childPosition) {
return ListChildTerbaru.get(groupPosition).get(childPosition);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild,View convertView, ViewGroup parent) {
ChildTerbaru childTerbaru = getChild(groupPosition, childPosition);
ViewHolder holder= null;
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.expandablelistview_child, null);
holder=new ViewHolder();
holder.begdate1=(TextView)convertView.findViewById(R.id.beg_date);
holder.enddate1=(TextView)convertView.findViewById(R.id.end_date);
convertView.setTag(holder);
}
else{
holder=(ViewHolder)convertView.getTag();
}
holder.begdate1.setText(childTerbaru.getBegDate());
holder.enddate1.setText(childTerbaru.getEndDate());
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return ListChildTerbaru.get(groupPosition).size();
}
@Override
public TerbaruModel getGroup(int groupPosition) {
return ListTerbaru.get(groupPosition);
}
@Override
public int getGroupCount() {
return ListTerbaru.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
TerbaruModel terbaruModel = (TerbaruModel) getGroup(groupPosition);
ViewHolder holder= null;
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.expandablelistview_group, null);
holder=new ViewHolder();
holder.nama=(TextView)convertView.findViewById(R.id.name);
holder.alamat=(TextView)convertView.findViewById(R.id.address);
convertView.setTag(holder);
}
else{
holder=(ViewHolder)convertView.getTag();
}
holder.nama.setText(terbaruModel.getNama());
holder.alamat.setText(terbaruModel.getAlamat());
return convertView;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public boolean isChildSelectable(int arg0, int arg1) {
return true;
}
static class ViewHolder{
TextView begdate1, enddate1,nama, alamat, imageid;
}
}
public class TerbaruSimasCard extends Activity {
private ProgressDialog dialog;
private ArrayList<TerbaruModel> ListTerbaru = null;
private ArrayList<ChildTerbaru> ListChildTerbaru = null;
private ArrayList<ArrayList<ChildTerbaru>> ListChildXXXXXXXXX = null;
ListView list;
String phone1, begdate1, enddate1, img_id1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sample);
ListTerbaru = new ArrayList<TerbaruModel>();
ListChildTerbaru = new ArrayList<ChildTerbaru>();//ArrayList<ArrayList<ChildTerbaru>>>();
ListChildXXXXXXXXX = new ArrayList<ArrayList<ChildTerbaru>>();
new TerbaruAsyncTask().execute();
}
public class TerbaruAsyncTask extends AsyncTask<Void, Void, String> {
String url = ("http:www.domain.com/123");
public TerbaruAsyncTask() {
this.url = url;
}
protected void onPreExecute() {
super.onPreExecute();
dialog = ProgressDialog.show(TerbaruSimasCard.this, "",
"melakukan pengambilan data...");
}
@Override
protected String doInBackground(Void... params) {
String result = "";
try {
result = Connection.get(url);
} catch (Exception e) {
result = "";
Log.d("test", e.getMessage());
}
return result;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
fetchResponse(result.replace("\n", "").trim());
dialog.dismiss();
}
}
private void fetchResponse(String result) {
if (!result.equals("")) {
try {
JSONArray jsonArray = new JSONArray(result);
TerbaruModel LT = null;
ChildTerbaru CT = null;
for (int i = 0; i < jsonArray.length(); i++) {
ListChildTerbaru = new ArrayList<ChildTerbaru>();
JSONObject jsonObject = jsonArray.getJSONObject(i);
LT = new TerbaruModel(jsonObject.optString("img_id"),
jsonObject.optString("nama"),
jsonObject.optString("alamat"));
ListTerbaru.add(LT);
//for (int j = 0; j < jsonArray.length(); j++) {
CT = new ChildTerbaru(jsonObject.optString("begdate"),
jsonObject.optString("enddate"));
ListChildTerbaru.add(CT);//get(i).get(i).add(CT);
//}
ListChildXXXXXXXXX.add(ListChildTerbaru);
ExpandableListView list = (ExpandableListView) findViewById(R.id.expandablelistView);
TerbaruAdapter adapter = new TerbaruAdapter(this,ListTerbaru, ListChildXXXXXXXXX);
list.setAdapter(adapter);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}