como hacer ExpandableListView con JSON array
Quiero hacer un ExpandableListView, que obtiene datos de una respuesta del servidor (matriz JSON) para sus grupos y sus hijos. este es mi json
[
{
"
"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",
}
]
"alamat" y nama "se convertirán en grupos," begdate "y" enddate "se convertirán en sus hijos. Tengo un tutorial desde aquí:http://en.wikicode.org/index.php/Custom_ExpandableListView pero cuando lo implemento, tengo un error, ¿hay algún error con mi código? este es mi logcat
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)
este es mi codigo
TerbaruSimasCard.java
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();
}
}
}
}
este es mi TerbaruAdapter.java:
public class TerbaruAdapter extends BaseExpandableListAdapter{
Context context;
ArrayList<TerbaruModel>ListTerbaru;
ArrayList<ArrayList<ArrayList<ChildTerbaru>>> ListChildTerbaru;
int count;
public TerbaruAdapter (Context context, ArrayList<TerbaruModel>ListTerbaru,ArrayList<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 ArrayList<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 ListChildTerbaru = (ChildTerbaru) ((ArrayList<ChildTerbaru>)getChild(groupPosition, childPosition)).get(0);
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);
}
else{
holder=(ViewHolder)convertView.getTag();
}
holder.begdate1.setText(ListChildTerbaru.getBegDate());
holder.enddate1.setText(ListChildTerbaru.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 ListTerbaru = (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.adress);
}
else{
holder=(ViewHolder)convertView.getTag();
}
holder.nama.setText(ListTerbaru.getNama());
holder.alamat.setText(ListTerbaru.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;
}
}
No tengo ni idea de dónde está mi error, ¿es porque estoy equivocado al analizar JSON como a continuación?
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);
}
o hay algo malo en otra cosa? Espero que alguien me pueda decir dónde está mi culpa ... gracias