Top10Fragment.java

package com.example.fudanbbs;

import java.net.SocketTimeoutException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.concurrent.ExecutionException;

import org.jsoup.Connection;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

import android.app.Activity;
import android.app.Fragment;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.TextView;
import android.widget.Toast;
/**
 * @author Joseph.Zhong
 *
 */
public class Top10Fragment extends Fragment {
	static final String TAG = "MainActivity";
	private FudanBBSApplication currentApplication;
	private ArrayList<HashMap<String, String>> top10List;
	private SimpleAdapter adapter;
	private ListView top10ListView;
	private ProgressDialog progressdialog;
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);

	}

	@Override
	public View onCreateView(LayoutInflater inflater,
			ViewGroup container,
			Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		
		View rootView = inflater.inflate(R.layout.top10fragment, container, false);
		progressdialog = new ProgressDialog(getActivity());
		progressdialog.setMessage(getString(R.string.loadingtop10list));
		progressdialog.setCancelable(false);
		progressdialog.setCanceledOnTouchOutside(false);
		progressdialog.setProgressStyle(progressdialog.STYLE_SPINNER);	
        top10ListView = (ListView)rootView.findViewById(R.id.top10listview);

    	top10AsycTask task = new top10AsycTask();
    	task.execute();
		return rootView;
	}
	
    public class top10AsycTask extends AsyncTask<String, Integer, String>{
    	private int responsecode;

		@Override
		protected void onPreExecute() {
			// TODO Auto-generated method stub
			super.onPreExecute();
			Log.v(TAG, "onPreExecute");
	
			progressdialog.show();			
			if(null == top10List){
				top10List = new ArrayList<HashMap<String, String>>();		
			}else{
				top10List.clear();
			}
		}

		@Override
		protected void onPostExecute(String result) {
			// TODO Auto-generated method stub
//			super.onPostExecute(result);
			Log.v(TAG, "onPostExecute");
			if(9999 == responsecode){
				Toast.makeText(getActivity(),getResources().getString(R.string.connectfailed), Toast.LENGTH_LONG).show();
			}
	        adapter = new SimpleAdapter(getActivity().getApplicationContext(), top10List, 
	        		R.layout.top10, 
	        		new String[]{"owner","board","title"}, 
	        		new int[]{R.id.top10owner, R.id.top10board, R.id.top10title});

	    	top10ListView.setAdapter(adapter);

	        OnItemClickListener listener = new OnItemClickListener(){
				@Override
				public void onItemClick(
						AdapterView<?> parent,
						View view, int position, long id) {
					// TODO Auto-generated method stub
					Log.v("Listview", "position"+position);
					String gid = top10List.get(position).get("gid");
					String board = top10List.get(position).get("board");
					String postURL = "http://bbs.fudan.edu.cn/bbs/tcon?new=1&board="+board+"&f="
							+gid;
					Intent intent = new Intent();
					intent.setClassName(getActivity(), "com.example.fudanbbs.PostActivity");
					Bundle bundle = new Bundle();
					bundle.putString("postURL", postURL);
					intent.putExtras(bundle);
					startActivity(intent);
				}
	        	
	        };
	        top10ListView.setOnItemClickListener(listener);
	        
			if(progressdialog.isShowing()){
				progressdialog.dismiss();
			}
		}

		@Override
		protected void onProgressUpdate(Integer... values) {
			// TODO Auto-generated method stub
			super.onProgressUpdate(values);
		}

		@Override
		protected String doInBackground(String... params) {
			// TODO Auto-generated method stub
			Log.v(TAG, "doInBackground start");
			try {
				Document doc = Jsoup.connect("http://bbs.fudan.edu.cn/bbs/top10").timeout(15000).get();
				Elements ele = doc.getElementsByTag("top");
				for(Element e: ele){
					HashMap<String, String> map = new HashMap();
					map.put("owner",e.attr("owner").toString().trim());
					map.put("board", e.attr("board").toString().trim());
					map.put("gid", e.attr("gid").toString().trim());
					map.put("title", e.text().toString().trim());
					map.put("count", e.attr("count").toString().trim());
					top10List.add(map);
				}
			}catch(SocketTimeoutException e){
				responsecode = 9999;
			}catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			Log.v(TAG, "doInBackground end");
			return null;
		}
    }
}