package com.andyidea.tabdemo;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager.LayoutParams;
import android.widget.Button;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;

public class pro_ans extends Activity {

    Button btn_more;
    TableLayout table;
    String response;
    int id;
    String pro;
    String name;
    String time;

    Handler handler = new Handler() {
        public void handleMessage(Message msg) {
            if (msg.what == 0x123) {
                response = response.substring(response.indexOf("{"),
                        response.lastIndexOf("}") + 1);
                 response="{objects:["+response+"]}";

                try {

                    JSONObject obj = new JSONObject(response);
                    JSONArray jsonArray = obj.getJSONArray("objects");
                    for (int i = 0; i < jsonArray.length(); ++i) {
                        JSONObject jsonObj = (JSONObject) jsonArray.get(i);

                        id = jsonObj.getInt("pro_id");

                        pro = jsonObj.getString("pro_desc");

                        name = jsonObj.getString("name");

                        time = jsonObj.getString("time");

                        addRow();

                    }

                } catch (JSONException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

            }
        }

    };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.pro_ans);

        table = (TableLayout) findViewById(R.id.table);
        btn_more = (Button) findViewById(R.id.more);

        btn_more.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                read();

            }

        });

    }

    private void addRow() {

        TableRow tableRow = new TableRow(this);
        TextView tv_id = new TextView(this);
        TextView tv_pro = new TextView(this);
        TextView tv_name = new TextView(this);
        TextView tv_time = new TextView(this);

        tv_id.setText(" " + id);
        tv_pro.setText(pro);
        tv_name.setText(name);
        tv_time.setText(time);

        tableRow.addView(tv_id);
        tableRow.addView(tv_pro);
        tableRow.addView(tv_name);
        tableRow.addView(tv_time);
        table.addView(tableRow, 1, new TableLayout.LayoutParams(
                LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
    }

    public void read() {
        new Thread() {
            @Override
            public void run() // 在这个线程里只能写这两句话！不明觉厉！
            {
                response = GetPostUtil.sendGet(
                        "http://222.249.250.113/Lyn/get_data/get_problem.php",
                        "");
                // 发送消息通知UI线程更新UI组件

                handler.sendEmptyMessage(0x123);

            }
        }.start();
    }

}

不知为什么从服务器获取的Json串没了 [ ] 

于是又加上了这句： 

 response = response.substring(response.indexOf("{"),
                        response.lastIndexOf("}") + 1);
                 response="{objects:["+response+"]}";

这有两个作用：

一、加objects {} 头，方便解析json数组

二、加 [ ]

 单步调试是个好东西
http://xys289187120.blog.51cto.com/3361352/657169