做了一个可以查询飞机航班、火车班次的小应用

做得很粗糙，代码量也很少，数据通过调用web service得到。

TrainActivity.java用于输入起点站、终点站，并将输入的值传入下一个Activity

package cn.salesuite.layout;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

/**
 * @author Tony Shen
 *
 */
public class TrainActivity extends Activity{
	
	int REQUEST_CODE=2;
	Button queryButton;  //查询按钮
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
    	setTitle("火车班次查询");
        super.onCreate(savedInstanceState);
        setContentView(R.layout.train);
        
        queryButton = (Button) findViewById(R.id.query);
        queryButton.setOnClickListener(queryListener);
    }

	// query按钮监听器
    OnClickListener queryListener = new OnClickListener() {
		public void onClick(View v) {
			CharSequence firstStationValue = ((EditText) findViewById(R.id.firstStation)).getText();
			CharSequence lastStationValue = ((EditText) findViewById(R.id.lastStation)).getText();
			String temp = firstStationValue.toString() + "," + lastStationValue.toString();
			Intent intent = new Intent(TrainActivity.this, ListTrainActivity.class);
			intent.setData(Uri.parse(temp));
            startActivityForResult(intent, REQUEST_CODE);//以传递参数的方式跳转到下一个Activity
		}
	};

}

ListTrainActivity.java用于显示所有的查询出来的火车航班，通过dom4j来解析xml

package cn.salesuite.layout;

import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.HttpProtocolParams;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.AdapterView.OnItemClickListener;

/**
 * @author Tony Shen
 *
 */
public class ListTrainActivity extends Activity {
	
	private List<Map<String, Object>> data;
	private ListView listView = null;
	SimpleAdapter adapter = null;
	String responseBody = null;
	Intent intent;
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
    	setTitle("个人生活助理beta");
        super.onCreate(savedInstanceState);
        listView = new ListView(this);
		
        intent=ListTrainActivity.this.getIntent();
        String tmp=intent.getDataString();
        String[] stations= tmp.split(",");
        
		try {
			responseBody = parseTrain(stations[0], stations[1]);
		} catch (Exception e) {
			e.printStackTrace();
		}
		
        PrepareData(responseBody);
        
		// 利用系统的layout显示一项
		SimpleAdapter adapter = new SimpleAdapter(this, data,
				R.layout.train_row, new String[] { "TrainCode", "FirstStation","LastStation", "StartTime", "ArriveTime" }, 
				new int[] {R.id.text1, R.id.text2, R.id.text3, R.id.text4,R.id.text5 });
		listView.setAdapter(adapter);
		setContentView(listView);
		
		OnItemClickListener listener = new OnItemClickListener() {
			public void onItemClick(AdapterView<?> parent, View view, int position,
					long id) {
				setTitle(parent.getItemAtPosition(position).toString());
			}
		};
		listView.setOnItemClickListener(listener);
    }

	protected String parseTrain(String firstStation, String lastStation)
			throws Exception {
		String url = "/WebServices/TrainTimeWebService.asmx/getStationAndTimeByStationName";
		String host = "www.webxml.com.cn";
		String param = "StartStation="
				+ URLEncoder.encode(firstStation, "utf-8") + "&ArriveStation="
				+ URLEncoder.encode(lastStation, "utf-8") + "&userID=";

		HttpClient httpclient = new DefaultHttpClient();
		httpclient.getParams().setParameter(
				HttpProtocolParams.HTTP_CONTENT_CHARSET, "UTF-8");

		HttpGet httpget = new HttpGet("http://" + host + url + "?" + param);

		ResponseHandler<String> responseHandler = new BasicResponseHandler();
		return httpclient.execute(httpget, responseHandler);
	}

	private void PrepareData(String responseBody) {
		data = new ArrayList<Map<String, Object>>();
		Map<String, Object> item;
		Document document;
		try {
			document = DocumentHelper.parseText(responseBody);
			Element root = document.getRootElement();
			Iterator it = root.element("diffgram").element("getStationAndTime").elementIterator("TimeTable");
			while (it.hasNext()) {
				Element info = (Element) it.next();
				item = new HashMap<String, Object>();
				item.put("TrainCode", info.elementText("TrainCode"));
				item.put("FirstStation", info.elementText("FirstStation"));
				item.put("LastStation", info.elementText("LastStation"));
				item.put("StartTime", info.elementText("StartTime"));
				item.put("ArriveTime", info.elementText("ArriveTime"));
				data.add(item);
			}
		} catch (DocumentException e) {
			e.printStackTrace();
		}
	}
}

飞机航班的做法很类似，下面上效果图