Retrieving Json Array

You need to get the JSONArray first from the string that you got. And then access the particular object. Here is the code that you can use to get the suggestions array :

String result = queryRESTurl(urlString);
JSONArray array =  new JSONArray( result );


JSONObject object = array.getJSONObject( 0 );
JSONArray alertsArray = object.getJSONArray( "suggestions" );

Looking at the JSON object:

{
"query": "Bo",
"suggestions": ["Bognor Regis", "Bolton",  ... ]
}

It looks to me that suggestions[0] isn't a JSONObject ("an unordered collection of name/value pairs"), hence the error. It is a plain String. Try:

String alertitem = alertsArray.getString(a);

        public static ArrayList<Sport_Teamdetail_dto> getSport_TeamDetail(String id) {

            ArrayList<Sport_Teamdetail_dto> fetchSport_TeamDetail = new ArrayList<Sport_Teamdetail_dto>();
            String result = "";
            InputStream is = null;

            ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
            nameValuePairs.add(new BasicNameValuePair("id", id));


            try {
                // http post
                HttpClient httpclient = new DefaultHttpClient();
                HttpPost httppost = new HttpPost(url + "fetch_allsportdata.php?");
                httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                HttpResponse response = httpclient.execute(httppost);
                HttpEntity entity = response.getEntity();
                is = entity.getContent();

               // http Get
                HttpClient httpclient = new DefaultHttpClient();
                HttpResponse httpResponse = httpclient.execute(new HttpGet(url));
                is = httpResponse.getEntity().getContent();


            } catch (Exception e) {
                Log.e("log_tag", "Error in http connection " + e.toString());
            }
            // convert response to string
            try {
                BufferedReader reader = new BufferedReader(new InputStreamReader(
                        is, "iso-8859-1"), 8);
                StringBuilder sb = new StringBuilder();
                String line = null;
                while ((line = reader.readLine()) != null) {
                    sb.append(line + "\n");
                }
                is.close();
                result = sb.toString();
            } catch (Exception e) {
                Log.e("log_tag", "Error converting result " + e.toString());
            }

            // parse json data
            try {
                JSONObject json_obj = new JSONObject(result);
                JSONArray j_Arr_sco_id = json_obj.getJSONArray("scid");
                JSONArray j_Arr_tn = json_obj.getJSONArray("Teamname");
                JSONArray j_Arr_vn = json_obj.getJSONArray("Venuename");
                JSONArray j_Arr_cenr = json_obj.getJSONArray("Centerreference");
                JSONArray j_Arr_ref1 = json_obj.getJSONArray("Referee1");
                JSONArray j_Arr_ref2 = json_obj.getJSONArray("Referee2");

                for (int i = 0; i < j_Arr_tn.length(); i++) {
                    Sport_Teamdetail_dto sportteamdto = new Sport_Teamdetail_dto();
                    sportteamdto.sport_scocer_id = j_Arr_sco_id.getString(i);
                    sportteamdto.sports_team_teamname = j_Arr_tn.getString(i);
                    sportteamdto.sports_venue_name_all = j_Arr_vn.getString(i);
                    sportteamdto.sports_centerreff_name_teamnm = j_Arr_cenr
                            .getDouble(i);
                    sportteamdto.sports_ref1_name_team_nm = j_Arr_ref1.getDouble(i);
                    sportteamdto.sports_ref2_name_teamnm = j_Arr_ref2.getDouble(i);

                    fetchSport_TeamDetail.add(sportteamdto);

                }

            } catch (JSONException e) {
                Log.e("log_tag", "Error parsing data " + e.toString());
            }
            return fetchSport_TeamDetail;

        }


   public class ItemListAdapterFindStore extends ArrayAdapter<ComanWord> {
        Context context1;
        private HashMap<Integer, Boolean> mSelection = new HashMap<Integer, Boolean>();

        /**
         * Constructor from a list of items
         */
        public ItemListAdapterFindStore(Context context, ArrayList<ComanWord> items) {
            super(context, 0, items);
            li = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            context1 = context;
        }

        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {
            // The item we want to get the view for
            // --
            final ComanWord item = getItem(position);

            // Re-use the view if possible
            // --
            final ViewHolder holder;
            if (convertView == null) {
                convertView = li.inflate(R.layout.list_item_card, null);
                holder = new ViewHolder(convertView);
                convertView.setTag(R.id.holder, holder);
            } else {
                holder = (ViewHolder) convertView.getTag(R.id.holder);
            }

            holder.m_text1.setText(item.getEnglish());
            holder.m_text2.setText(item.getHindi());

            if (item.getGujarati() != null && item.getGujarati() != "") {
                holder.m_text3.setText(item.getGujarati());
            }


            if(item.getFavflag() ==0){
                holder.img_audio1.setImageResource(R.drawable.apptheme_rate_star_small_off_holo_light);
            }else{
                holder.img_audio1.setImageResource(R.drawable.apptheme_rate_star_small_on_holo_light);
            }

            RelativeLayout rel = (RelativeLayout) convertView
                    .findViewById(R.id.rel_box);
            // rel.setBackgroundColor(v.getResources().getColor(R.color.bacground));
            if (mSelection.get(position) != null) {

                rel.setBackgroundColor(convertView.getResources().getColor(
                        R.color.actionbarcolor1));// this is a selected position so
                                                    // make it red
            } else {
                rel.setBackgroundColor(convertView.getResources().getColor(
                        R.color.white));
            }

            holder.img.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    Log.i("fb", "AMIT::" + item.getEnglish().toString());
                    PlanetFragment.speakOut(item.getEnglish().toString());
                }
            });

            holder.img_audio1.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {

                    if(item.getFavflag() ==0){
                        holder.img_audio1.setImageResource(R.drawable.apptheme_rate_star_small_on_holo_light);
                    }else{
                        holder.img_audio1.setImageResource(R.drawable.apptheme_rate_star_small_off_holo_light);
                    }
                    PlanetFragment.test(position);



                }
            });

            return convertView;
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public boolean hasStableIds() {
            return true;
        }

        private LayoutInflater li;

        private static class ViewHolder {
            public ViewHolder(View m_rootView) {
                m_text1 = (TextView) m_rootView.findViewById(R.id.text1);
                m_text2 = (TextView) m_rootView.findViewById(R.id.text2);
                m_text3 = (TextView) m_rootView.findViewById(R.id.text3);
                img = (ImageView) m_rootView.findViewById(R.id.img_audio);

                img_audio1 = (ImageView) m_rootView.findViewById(R.id.img_audio1);
                m_text2.setTypeface(MainActivity.fonth);
                m_text3.setTypeface(MainActivity.fontg);
            }

            private TextView m_text1;
            private TextView m_text2;
            private TextView m_text3;
            private ImageView img, img_audio1;

        }

        public void setNewSelection(int position, boolean value) {
            mSelection.put(position, value);
            notifyDataSetChanged();
        }

        public boolean isPositionChecked(int position) {
            Boolean result = mSelection.get(position);
            return result == null ? false : result;
        }

        public Set<Integer> getCurrentCheckedPosition() {
            return mSelection.keySet();
        }

        public void removeSelection(int position) {
            CommonWordApp.words = "";
            mSelection.remove(position);
            notifyDataSetChanged();
        }

        public void clearSelection() {
            CommonWordApp.words = "";
            mSelection = new HashMap<Integer, Boolean>();
            notifyDataSetChanged();
        }
    }