gistfile1.txt

import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ListView;

import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;

import java.io.IOException;
import java.io.StringReader;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

public class MainActivity extends AppCompatActivity {
    ProgressDialog waitProgress;
    List<Feed> rssItems;
    Adapter adapter;
    String url = "http://www.cbc.ca/cmlink/rss-topstories";
    OkHttpClient client;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);



        new ParseAsync().execute();


    }

    private class ParseAsync extends AsyncTask<Void, Integer, Void> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();

            waitProgress = ProgressDialog.show(MainActivity.this, "",
                    "Loading please wait...");
        }

        @Override
        protected void onProgressUpdate(Integer... values) {
            super.onProgressUpdate(values);
            if (waitProgress != null) {
                waitProgress.dismiss();
            }
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            super.onPostExecute(aVoid);

            displayData();
            if (waitProgress != null) {
                waitProgress.dismiss();
            }
        }

        @Override
        protected Void doInBackground(Void... params) {

            try {

                synchronized (this) {

                    saxParser();
                    publishProgress(25);

                }
            } catch (Exception e) {
                e.printStackTrace();
            }

            return null;
        }
    }

    private void saxParser() {

        try {
            rssItems = new ArrayList<Feed>();
            client = new OkHttpClient();
            // code request code here
            Request request = new Request.Builder()
                    .url(url)
                    .build();

            Response response = client.newCall(request).execute();
            String xmlstring = response.body().string();

            SAXParserFactory saxPF = SAXParserFactory.newInstance();
            SAXParser saxP = saxPF.newSAXParser();

            RssParseHandler myXMLHandler = new RssParseHandler();
            InputSource inputSource = new InputSource(new StringReader(xmlstring));
            saxP.parse(inputSource, myXMLHandler);

            rssItems = myXMLHandler.getItems();
            //  Log.i("SaxParser", "size: " + movie_list.size());

        } catch (Exception e) {
            System.out.println(e);
        }

    }

    private void displayData() {
        ListView listView = (ListView) findViewById(R.id.listView);
        adapter = new Adapter(this, R.layout.item, rssItems);
        adapter.notifyDataSetChanged();
        listView.setAdapter(adapter);

    }
}