草稿

package com.mialab.parse;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import com.mialab.parse.bean.Person;
import com.mialab.parse.util.HttpUtil;
import com.mialab.parse.util.JsonTool;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener {
    private static String PATH = "http://192.168.1.108:8080/jsonserver/servlet/JsonServlet";
    private static final String TAG = "MainActivity";
    private Button person, persons, listString, listMap;
    private Person demoperson;
    private List<Person> list2;
    private List<String> list3;
    private List<Map<String, Object>> list4;
    private Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what) {
            case -2:
                Toast.makeText(MainActivity.this, (String) msg.obj,
                        Toast.LENGTH_LONG).show();
                // finish();
                break;
            case 1:
                Intent intent = new Intent(MainActivity.this,
                        ResultActivity.class);
                intent.putExtra("click_flag", "person"); // 标记当前intent是按钮 person
                // intent.putExtra("person", (Serializable) demoperson);
                intent.putExtra("person", demoperson);
                startActivity(intent);
                break;
            case 2:
                Intent intent2 = new Intent(MainActivity.this,
                        ResultActivity.class);
                intent2.putExtra("click_flag", "persons"); // 标记当前intent按钮是persons
                intent2.putExtra("persons", (Serializable) list2);
                startActivity(intent2);
                break;
            case 3:
                Intent intent3 = new Intent(MainActivity.this,
                        ResultActivity.class);
                intent3.putExtra("click_flag", "listString"); // 标记当前intent按钮是listString
                intent3.putStringArrayListExtra("listString",
                        (ArrayList<String>) list3); // 参数中的list要加强制转换
                startActivity(intent3);
                break;
            case 4:
                Intent intent4 = new Intent(MainActivity.this, ResultActivity.class);
                intent4.putExtra("click_flag", "listMap"); // 标记 当前intent按钮是listMap
                // 用Intent传递List<map<string,object>> 对象，其中HashMap实现了Serializable
                intent4.putExtra("listMap", (Serializable) list4);
                startActivity(intent4);
                break;
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        person = (Button) findViewById(R.id.person);

        persons = (Button) findViewById(R.id.persons);
        listString = (Button) findViewById(R.id.listString);
        listMap = (Button) findViewById(R.id.listMap);

        person.setOnClickListener(this);
        persons.setOnClickListener(this);
        listString.setOnClickListener(this);
        listMap.setOnClickListener(this);

    }

    public void sendMessage(int index, String message) {
        Message msg = new Message();
        msg.obj = message;
        msg.what = index;
        handler.sendMessage(msg);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.person:
            final String path1 = PATH + "?action_flag=person";
            Toast.makeText(MainActivity.this, "正在下载网络数据，请稍候...",
                    Toast.LENGTH_LONG).show();
            new Thread() {
                public void run() {
                    try {
                        String jsonString1 = HttpUtil.getJsonContent(path1,
                                "utf-8");
                        demoperson = JsonTool.getPerson("person", jsonString1);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                    if (demoperson != null) {
                        sendMessage(1, null);
                    } else {
                        sendMessage(
                                -2,
                                getResources().getString(
                                        R.string.network_exception));
                    }
                }
            }.start();
            break;

        case R.id.persons:
            final String path2 = PATH + "?action_flag=persons";
            Toast.makeText(MainActivity.this, "正在下载网络数据，请稍候...",
                    Toast.LENGTH_LONG).show();
            new Thread() {
                public void run() {
                    try {
                        String jsonString2 = HttpUtil.getJsonContent(path2,
                                "utf-8");
                        list2 = JsonTool.getPersons("persons", jsonString2);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                    if (list2 != null) {
                        sendMessage(2, null);
                    } else {
                        sendMessage(
                                -2,
                                getResources().getString(
                                        R.string.network_exception));
                    }
                }
            }.start();
            break;
        case R.id.listString:
            final String path3 = PATH + "?action_flag=listString";
            Toast.makeText(MainActivity.this, "正在下载网络数据，请稍候...",
                    Toast.LENGTH_LONG).show();
            new Thread() {
                public void run() {
                    try {
                        String jsonString3 = HttpUtil.getJsonContent(path3,
                                "utf-8");
                        list3 = JsonTool.getList("listString", jsonString3);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                    if (list3 != null) {
                        sendMessage(3, null);
                    } else {
                        sendMessage(
                                -2,
                                getResources().getString(
                                        R.string.network_exception));
                    }
                }
            }.start();
            break;
        case R.id.listMap:
            final String path4 = PATH + "?action_flag=listMap";
            Toast.makeText(MainActivity.this, "正在下载网络数据，请稍候...",
                    Toast.LENGTH_LONG).show();
            new Thread() {
                public void run() {
                    try {                        
                        String jsonString4 = HttpUtil.getJsonContent(path4, "utf-8");
                        list4 = JsonTool.getListMap("listMap", jsonString4);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                    if (list4 != null) {
                        sendMessage(4, null);
                    } else {
                        sendMessage(
                                -2,
                                getResources().getString(
                                        R.string.network_exception));
                    }
                }
            }.start();            
            break;
        }
    }

}