org.dronix.android.unisannio.fragment.TabOne.java Source code

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Here is the source code for org.dronix.android.unisannio.fragment.TabOne.java

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/*******************************************************************************
 * Copyright 2012 Ivan Morgillo
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package org.dronix.android.unisannio.fragment;

import java.io.IOException;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.List;

import org.dronix.android.unisannio.LazyAdapter;
import org.dronix.android.unisannio.News;
import org.dronix.android.unisannio.R;
import org.dronix.android.unisannio.R.id;
import org.dronix.android.unisannio.R.layout;
import org.dronix.android.unisannio.R.string;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

import android.content.res.TypedArray;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.format.DateUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.handmark.pulltorefresh.library.PullToRefreshListView;

public class TabOne extends Fragment {
    private String URL = "http://www.unisannio.it/notizie/avvisi/index.php";
    private ArrayList<News> news;
    private LazyAdapter mAdapter;
    private PullToRefreshListView mPullRefreshListView;

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.tabone, container, false);
        mPullRefreshListView = (PullToRefreshListView) view.findViewById(R.id.pull_refresh_list);

        // Set a listener to be invoked when the list should be refreshed.
        mPullRefreshListView.setOnRefreshListener(new OnRefreshListener<ListView>() {
            @Override
            public void onRefresh(PullToRefreshBase<ListView> refreshView) {
                mPullRefreshListView.setLastUpdatedLabel(DateUtils.formatDateTime(getActivity(),
                        System.currentTimeMillis(),
                        DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_ABBREV_ALL));

                new NewsRetriever().execute();
            }
        });

        ListView actualListView = mPullRefreshListView.getRefreshableView();

        news = new ArrayList<News>();
        news.add(new News("", getString(R.string.pull)));

        mAdapter = new LazyAdapter(getActivity(), news);

        actualListView.setAdapter(mAdapter);
        return view;
    }

    public List<News> getNews() {
        List<News> newsList = new ArrayList<News>();

        try {
            Document doc = Jsoup.connect(URL).timeout(10000).get();
            Elements newsItems = doc.select("div.meta > table > tbody > tr");

            for (int i = 2; i < newsItems.size(); i++) {
                String date = null;
                Element dateElement = newsItems.get(i).select("p").first();
                if (dateElement != null) {
                    date = dateElement.text();
                }

                String body = null;
                Element bodyElement = newsItems.get(i).select("a").first();
                if (bodyElement != null) {
                    body = bodyElement.text();
                }

                if (date != null && body != null)
                    newsList.add(new News(date, body));
            }

        } catch (SocketException e) {
            return null;
        } catch (IOException e) {
            e.printStackTrace();
        }

        /*
         * for (News n : newsList) { Log.i("NEWS", n.getDate() + " " +
         * n.getBody()); }
         */
        return newsList;
    }

    class NewsRetriever extends AsyncTask<Void, Void, List<News>> {

        @Override
        protected void onPreExecute() {
        }

        @Override
        protected List<News> doInBackground(Void... params) {
            return getNews();
        }

        @Override
        protected void onPostExecute(List<News> result) {
            if (result != null) {
                news.clear();
                news.addAll(result);
                mAdapter.notifyDataSetChanged();
            }
            mPullRefreshListView.onRefreshComplete();
        }
    }
}