Android async JSONClient

Activity1.java

public class Activity1 extends Activity {
        @Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
                JSONClient client = new JSONClient(this, l);
		String url = "url that will return JSON";
		
	        client.execute(url);
         }

         GetJSONListener l = new GetJSONListener(){

		@Override
		public void onRemoteCallComplete(JSONObject jsonFromNet) {
			// add code to act on the JSON object that is returned			
		}
		
	};
}

GetJSONListener.java

import org.json.JSONObject;

public interface GetJSONListener {
	public void onRemoteCallComplete(JSONObject jsonFromNet);
}

JSONclient.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.util.Log;

public class JSONClient extends AsyncTask<String, Void, JSONObject>{
    ProgressDialog progressDialog ;
    GetJSONListener getJSONListener;
    Context curContext;
    public JSONClient(Context context, GetJSONListener listener){
        this.getJSONListener = listener;
        curContext = context;
    }
    private static String convertStreamToString(InputStream is) {
        /*
         * To convert the InputStream to String we use the BufferedReader.readLine()
         * method. We iterate until the BufferedReader return null which means
         * there's no more data to read. Each line will appended to a StringBuilder
         * and returned as String.
         */
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String line = null;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        return sb.toString();
    }


    public static JSONObject connect(String url)
    {
        HttpClient httpclient = new DefaultHttpClient();

        // Prepare a request object
        HttpGet httpget = new HttpGet(url); 

        // Execute the request
        HttpResponse response;
        try {
            response = httpclient.execute(httpget);
            
            // Get hold of the response entity
            HttpEntity entity = response.getEntity();

            if (entity != null) {

                // A Simple JSON Response Read
                InputStream instream = entity.getContent();
                String result= convertStreamToString(instream);

                // A Simple JSONObject Creation
                JSONObject json=new JSONObject(result);

                // Closing the input stream will trigger connection release
                instream.close();

                return json;
            }


        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return null;
    }
    @Override
    public void onPreExecute() {
        progressDialog = new ProgressDialog(curContext);
        progressDialog.setMessage("Loading..Please wait..");
        progressDialog.setCancelable(false);
        progressDialog.setIndeterminate(true);
        progressDialog.show();

    }

    @Override
    protected JSONObject doInBackground(String... urls) {
        return connect(urls[0]);
    }

    @Override
    protected void onPostExecute(JSONObject json ) {
        getJSONListener.onRemoteCallComplete(json);
        progressDialog.dismiss();
    }
}

this is a solution that I found online after a bit of searching. If i knew who the author was I would give appropriate credit. I'm just putting it here so it will be easier to find later if needed.