这里发图片好像不太好发，更多内容请访问我的博客
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读取json数据并绑定数据源的代码：
package net.dofind.lifeservice.activity;

import
import
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import net.dofind.lifeservice.R;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.CoreConnectionPNames;
import org.json.JSONArray;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;

public class UserActivity extends Activity {
    private static final String URL = "http://system.
    private TextView userList;

    private ListView mListView = null;
    private List<Map<String, String>> listData=null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.user_list);
        initJsonData();                        //初始化json数据
        bundleData();                        //绑定json数据至dataview
    }

    /**
     * 初始化界面
     */
    public void initJsonData(){
        HttpClient client = new DefaultHttpClient();
        StringBuilder builder = new StringBuilder();
        userList = (TextView) findViewById(R.id.userList);
        try {
            HttpGet get = new HttpGet(URL);
            get.getParams().setParameter(
                    CoreConnectionPNames.CONNECTION_TIMEOUT, 2000);
            HttpResponse response = client.execute(get);
            BufferedReader reader = new BufferedReader(
                    new InputStreamReader(response.getEntity()
                            .getContent()));
            for (String s = reader.readLine(); s != null; s = reader
                    .readLine()) {
                builder.append(s);
            }
            listData=new ArrayList<Map<String,String>>();
            JSONArray jsonArray = new JSONArray(builder.toString());
            Map<String,String> headMap=new HashMap<String,String>();
            headMap.put("username", "用户名");
            headMap.put("password", "密 码");
            headMap.put("createDate", "创建时间");
            listData.add(headMap);
            for (int i = 0; i < jsonArray.length(); i++) {
                JSONObject item = jsonArray.getJSONObject(i);
                Map<String,String> map=new HashMap<String,String>();
                map.put("username", item.getString("username"));
                map.put("password", item.getString("password"));
                //将时间戳传换成重用的date字符串
                SimpleDateFormat format=new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss" );
                long dateMin=Long.parseLong(item.getString("createDate"));
                String createDate=format.format(dateMin);
                map.put("createDate", createDate);
                listData.add(map);
            }
            bundleData();                //绑定Item数据源
        } catch (Exception e) {
            e.printStackTrace();
            userList.setText("数据加载异常！");

        }
    }
    /**
     * 绑定Adapter数据源
     */
    public void bundleData() {
        SimpleAdapter adapter = new SimpleAdapter(this, listData,
                R.layout.user_list_item, new String[] { "username", "password", "createDate" },
                new int[] { R.id.user_username, R.id.user_password, R.id.user_createDate });
        mListView = (ListView) this.findViewById(R.id.userListView);
        mListView.setAdapter(adapter);
    }
}

看看