loading json array with volley library

Question

I have an fragment that in first I get some data from web API in JSON array and extract whats in the array. Then I give this two array (names , img_url) to custom grid view to show user. But, my JSON array that I use volley library to get that is not working. Here is my code :

public class selectCategouryFragment extends Fragment {
public selectCategouryFragment() {
}
private ProgressDialog pDialog;
String[] names = { "amir", "imani" };
String[] imgURL = { "asdasd", "asd sad" };
List<Item> items = null;
CustomGrid gridAdapter;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
 Bundle savedInstanceState) {
 View rootView = inflater.inflate(R.layout.fragment_select_categoury,
 container, false);
 pDialog = new ProgressDialog(getActivity());
 // Showing progress dialog before making http request
 pDialog.setMessage("Loading...");
 pDialog.show();
 String url = "http://api.androidhive.info/json/movies.json";
 JsonArrayRequest Jreq = new JsonArrayRequest(url,
 new Response.Listener<JSONArray>() {
 public void onResponse(JSONArray jsonArry) {
 for (int i = 0; i < jsonArry.length(); i++) {
 JSONObject obj = null;
 hidePDialog();
 try {
 obj = jsonArry.getJSONObject(i);
 } catch (JSONException e1) {
 Log.d("json", "error in taking json obj");
 }
 try {
 names[i] = obj.getString("title");
 imgURL[i] = obj.getString("image");
 Log.d("get", obj.getString("title"));
 } catch (JSONException e) {
 Log.d("json", "error in taking json obj value ");
 }
 }
 gridAdapter = new CustomGrid(getActivity(), names,
 imgURL);
 }
 }, new Response.ErrorListener() {
 public void onErrorResponse(VolleyError arg0) {
 }
 });
 AppController.getInstance().addToRequestQueue(Jreq);
 GridView grid = (GridView) rootView
 .findViewById(R.id.selectcat_gridView);
 grid.setAdapter(gridAdapter);
 grid.setOnItemClickListener(new OnItemClickListener() {
 public void onItemClick(AdapterView<?> parent, View view,
 int position, long id) {
 gotItemsFragment(names[position]);
 }
 });
 return rootView;
}
private void hidePDialog() {
 if (pDialog != null) {
 pDialog.dismiss();
 pDialog = null;
 }
}
private void gotItemsFragment(String m) {
 Fragment cardFragment = new CategouryItems(m);
 FragmentManager FM = getFragmentManager();
 FM.beginTransaction().replace(R.id.frame_container, cardFragment)
 .commit();
}
}

after a long time that show progress dialog , its crash and show this error s in log cat :

 02-01 07:37:17.342: E/AndroidRuntime(1282): FATAL EXCEPTION: main
02-01 07:37:17.342: E/AndroidRuntime(1282): Process: com.plusnet.tashrifat, PID: 1282
02-01 07:37:17.342: E/AndroidRuntime(1282): java.lang.ArrayIndexOutOfBoundsException: length=2; index=2
02-01 07:37:17.342: E/AndroidRuntime(1282): at plusnet.tashrifat.selectCategouryFragment1ドル.onResponse(selectCategouryFragment.java:69)
02-01 07:37:17.342: E/AndroidRuntime(1282): at plusnet.tashrifat.selectCategouryFragment1ドル.onResponse(selectCategouryFragment.java:1)
02-01 07:37:17.342: E/AndroidRuntime(1282): at com.android.volley.toolbox.JsonRequest.deliverResponse(JsonRequest.java:65)
02-01 07:37:17.342: E/AndroidRuntime(1282): at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99)
02-01 07:37:17.342: E/AndroidRuntime(1282): at android.os.Handler.handleCallback(Handler.java:733)
02-01 07:37:17.342: E/AndroidRuntime(1282): at android.os.Handler.dispatchMessage(Handler.java:95)
02-01 07:37:17.342: E/AndroidRuntime(1282): at android.os.Looper.loop(Looper.java:136)
02-01 07:37:17.342: E/AndroidRuntime(1282): at android.app.ActivityThread.main(ActivityThread.java:5017)
02-01 07:37:17.342: E/AndroidRuntime(1282): at java.lang.reflect.Method.invokeNative(Native Method)
02-01 07:37:17.342: E/AndroidRuntime(1282): at java.lang.reflect.Method.invoke(Method.java:515)
02-01 07:37:17.342: E/AndroidRuntime(1282): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
02-01 07:37:17.342: E/AndroidRuntime(1282): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
02-01 07:37:17.342: E/AndroidRuntime(1282): at dalvik.system.NativeStart.main(Native Method)

• Makyen: How is it not working?
• amir: its dont load any json data .
• amir: it just show the progress dialog and dont exit from that

Answer 1

you have initialized

String[] names = { "amir", "imani" };
String[] imgURL = { "asdasd", "asd sad" };

it looks jsonArry.length()> 2

so what you need to do is change these to:

String[] names = null;
String[] imgURL = null;

and in onResponse(): before the for loop

names = new String[jsonArry.length()];
imgURL = new String[jsonArry.length()];