JSONParser.java

package ca.grocerygo.android.utils;

import android.util.Log;
import com.google.gson.JsonArray;
import com.google.gson.JsonParser;
import com.google.gson.stream.JsonReader;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import java.io.*;

/**
 * User: robert
 * Date: 06/02/13
 */

public class JSONParser {

    static InputStream is = null;
    static JsonArray jObj = null;
    static String json = "";

    // constructor
    public JSONParser() {

    }

    public JsonReader getReaderFromUrl(String url) {
        Reader reader;
        InputStream inputStream = null;

        // Making HTTP request
        try {
            // defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient();

            HttpGet httpGet = new HttpGet(url);

            HttpResponse httpResponse = httpClient.execute(httpGet);
            HttpEntity httpEntity = httpResponse.getEntity();
            inputStream = httpEntity.getContent();

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        JsonReader jsonReader = new JsonReader(new InputStreamReader(inputStream));
        jsonReader.setLenient(true);

        return jsonReader;
    }

    public JsonArray getJSONFromUrl(String url) {

        // Making HTTP request
        try {
            // defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpGet httpGet = new HttpGet(url);

            HttpResponse httpResponse = httpClient.execute(httpGet);
            HttpEntity httpEntity = httpResponse.getEntity();
            is = httpEntity.getContent();

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    is, "UTF-8"), 8);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
            is.close();
            json = sb.toString();
        } catch (Exception e) {
            Log.e("Buffer Error", "Error converting result " + e.toString());
        }

        // try parse the string to a JsonArray
        JsonParser jsonParser = new JsonParser();
        jObj = jsonParser.parse(json).getAsJsonArray();

        return jObj;

    }
}