Android开发之json解析案例详解

在Android开发中经常会访问网络，然后访问网络的时候，往往需要返回数据，但是在返回数据的过程中，往往返回的是Json数据或者xml数据，但本节讲述关于访问网络返回json格式的数据并进行解析，进行详细的讲解：

在代码中已经进行了详细的说明，下面主要粘贴代码：并进行简单的说明：

1.此主Activity包含了主要的代码，里面包含了解析json数据的方法，由于本例较小，所有没有分开，原则上应该是分类的。

[java]
package com.shine.yihutuandui;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

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

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.content.res.AssetManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.view.Menu;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.ListView;

public class MainActivity extends Activity {

    private Button back;
    private ListView main_yihutuandui_lv;
    private String display_info;
    private List<HospitalTuanDuiBean> listarray;
    private LVAdapter adapter;

    Handler handler = new Handler() {
        public void handleMessage(Message msg) {
            switch (msg.what) {
            case 301:
                try {
                    listarray = getTopBeansJson(getServiceDataJson());
                } catch (JSONException e) {
                    e.printStackTrace();
                }
                adapter = new LVAdapter(MainActivity.this, listarray);
                main_yihutuandui_lv.setAdapter(adapter);
                break;
            default:
                break;
            }

        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.main);
        init();

    }

    private void init() {
        main_yihutuandui_lv = (ListView) this
                .findViewById(R.id.main_yihutuandui_lv);
        back=(Button) this.findViewById(R.id.main_yihutuandui_back);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    protected void onResume() {
        super.onResume();
        new Thread(new Runnable() {
            @Override
            public void run() {
                display_info = getHttpData();
                System.out.println(display_info.toString()
                        + "=======获取的信息json==============");
                Message msg = new Message();
                msg.what = 301;
                handler.sendMessage(msg);
            }
        }).start();
    }
    //在assert文件夹下面获取图片
    public Bitmap getAssertDrawable(String name) {
        Bitmap bmp = null;
        AssetManager am = MainActivity.this.getAssets();
        try {
            InputStream is = am.open(name);
            bmp = BitmapFactory.decodeStream(is);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return bmp;
    }

    /

补充：移动开发 , Android ,