猜测月考题，asyn解析xml文件，thread+handler解析gson文件

MainActivity.class:

package com.example.map_one_dinwei;


import java.util.List;

import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;

import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.mapapi.SDKInitializer;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.BitmapDescriptor;
import com.baidu.mapapi.map.MapStatusUpdate;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.model.LatLng;
import com.example.vo.Item;
import com.example.vo.Root;
import com.thoughtworks.xstream.XStream;


public class MainActivity extends Activity {
    public MapView mapView = null;
    public BaiduMap baiduMap = null;

    // 定位相关声明
    public LocationClient locationClient = null;
    //自定义图标
    BitmapDescriptor mCurrentMarker = null;
    boolean isFirstLoc = true;// 是否首次定位
private TextView tt;
private String URL = "http://apis.juhe.cn/goodbook/catalog?key=9d6ef8c31647a206e05fcaff70527182&dtype=xml";
private ListView list_view;
private List<Item> list;
private TextView textView2;
    public BDLocationListener myListener = new BDLocationListener() {
        @Override
        public void onReceiveLocation(BDLocation location) {
            // map view 销毁后不在处理新接收的位置
            if (location == null || mapView == null)
                return;
             //吐司
//            Toast.makeText(MainActivity.this, "经度"+arg0.getLongitude()+"纬度"+arg0.getLatitude()+"地址"+arg0.getAddrStr()+"街道"+arg0.getStreet()+"时间"+arg0.getTime(), 0).show();
            tt.setText(location.getAddrStr( ));
            MyLocationData locData = new MyLocationData.Builder()
                    .accuracy(location.getRadius())
                    // 此处设置开发者获取到的方向信息，顺时针0-360
                    .direction(100).latitude(location.getLatitude())
                    .longitude(location.getLongitude()).build();
            baiduMap.setMyLocationData(locData);    //设置定位数据
            
            
            if (isFirstLoc) {
                isFirstLoc = false;
                
                
                LatLng ll = new LatLng(location.getLatitude(),
                        location.getLongitude());
                MapStatusUpdate u = MapStatusUpdateFactory.newLatLngZoom(ll, 16);    //设置地图中心点以及缩放级别
//                MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(ll);
                baiduMap.animateMapStatus(u);
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // 在使用SDK各组件之前初始化context信息，传入ApplicationContext
        // 注意该方法要再setContentView方法之前实现
        SDKInitializer.initialize(getApplicationContext());
        setContentView(R.layout.activity_main);
        tt=(TextView) findViewById(R.id.tt);
        list_view=(ListView) findViewById(R.id.list_view);
        mapView = (MapView) this.findViewById(R.id.mapView); // 获取地图控件引用
        baiduMap = mapView.getMap();
        //开启定位图层
        baiduMap.setMyLocationEnabled(true);
        
        locationClient = new LocationClient(getApplicationContext()); // 实例化LocationClient类
        locationClient.registerLocationListener(myListener); // 注册监听函数
        this.setLocationOption();    //设置定位参数
        locationClient.start(); // 开始定位
        
        new Thread(){
            public void run() {
                
                new Asyn().execute(URL);
            };
        }.start();
        list_view.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                    long arg3) {
                // TODO Auto-generated method stub
                Intent it=new Intent(getApplicationContext(),ThreeActivity.class);
                startActivity(it);
            }
        });
    }

    private class Asyn extends AsyncTask<String, Integer, String>{

        private  String s;
        protected String doInBackground(String... params) {
            // TODO Auto-generated method stub
            
            s=Networkutil.httpol(URL);
            
            return s;
        }
        @Override
        protected void onPostExecute(String result) {
            // TODO Auto-generated method stub
            
            
            XStream xStream=new XStream();
            xStream.processAnnotations(Root.class);
            Root root=(Root) xStream.fromXML(result);
            List<Item> list=root.getResult().getItem();
                Mybase base=new Mybase(list, getApplicationContext());
                list_view.setAdapter(base);
        }
        
    }
    // 三个状态实现地图生命周期管理
    @Override
    protected void onDestroy() {
        //退出时销毁定位
        locationClient.stop();
        baiduMap.setMyLocationEnabled(false);
        // TODO Auto-generated method stub
        super.onDestroy();
        mapView.onDestroy();
        mapView = null;
    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        mapView.onResume();
    }

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        mapView.onPause();
    }

    /**
     * 设置定位参数
     */
    private void setLocationOption() {
        LocationClientOption option = new LocationClientOption();
        option.setOpenGps(true); // 打开GPS
        option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy);// 设置定位模式
        option.setCoorType("bd09ll"); // 返回的定位结果是百度经纬度,默认值gcj02
        option.setScanSpan(5000); // 设置发起定位请求的间隔时间为5000ms
        option.setIsNeedAddress(true); // 返回的定位结果包含地址信息
        option.setNeedDeviceDirect(true); // 返回的定位结果包含手机机头的方向
        
        locationClient.setLocOption(option);
    }

}

activity_main.xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >
<FrameLayout 
      android:layout_width="fill_parent"
        android:layout_height="wrap_content"
    >
    <com.baidu.mapapi.map.MapView  
            android:id="@+id/mapView"  
            android:layout_width="fill_parent"  
            android:layout_height="fill_parent"  
            android:clickable="true" 
            android:visibility="invisible"
            />
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >
        <!-- 添加地图控件 -->
        <TextView 
            android:id="@+id/tt"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="dddddddddd"
            />
          <ListView 
        
        android:id="@+id/list_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        ></ListView>
        
    </LinearLayout>
</FrameLayout>
 

</RelativeLayout>

ThreeActivity.class:

package com.example.map_one_dinwei;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

import com.example.vo.DataDemo;
import com.example.vo.Demo;
import com.google.gson.Gson;
import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.handmark.pulltorefresh.library.PullToRefreshGridView;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.widget.GridView;

public class ThreeActivity extends Activity{
    private PullToRefreshGridView grid_view;
    private List<Demo> data=new ArrayList<Demo>();
    private int p=10;
    private int z=10;
    private Mybasetwo base;
    private String str;
    private String url="http://apis.juhe.cn/goodbook/query?key=9d6ef8c31647a206e05fcaff70527182&catalog_id=246&rn=50&rn=";
     private int i=1;
     private Handler handler=new Handler(){
         public void handleMessage(android.os.Message msg) {
             switch (msg.what) {
            case 0:
                base=new Mybasetwo(data, getApplicationContext());
                grid_view.setAdapter(base);
                break;
            case 3:
            
                  base=new Mybasetwo(data, getApplicationContext());
                    grid_view.setAdapter(base);
                base.notifyDataSetChanged();
                grid_view.onRefreshComplete();
                break;
            case 4:
                

                  base=new Mybasetwo(data, getApplicationContext());
                    grid_view.setAdapter(base);
                    grid_view.onRefreshComplete();
                break;
            default:
                break;
            }
         };
     };
    protected void onCreate(Bundle savedInstanceState) {
            // TODO Auto-generated method stub
            super.onCreate(savedInstanceState);
        setContentView(R.layout.grid);
        grid_view=(PullToRefreshGridView) findViewById(R.id.grid_view);
        grid_view.setMode(Mode.BOTH);
             init();
            grid_view.setOnRefreshListener(new OnRefreshListener<GridView>() {

                @Override
                public void onRefresh(PullToRefreshBase<GridView> refreshView) {
                    // TODO Auto-generated method stub
                       i++;
                          new Thread(){
                               public void run() {
                                   url="http://apis.juhe.cn/goodbook/query?key=9d6ef8c31647a206e05fcaff70527182&catalog_id=246&rn=50&rn="+i;
                                   
                                   getClient();
                                   Gson g=new Gson();
                                DataDemo dd=g.fromJson(str, DataDemo.class);
                                data=dd.getResult().getData();
                                   handler.sendEmptyMessage(4);
                               };
                           }.start();
                }
                  
                    public void onPullUpToRefresh(PullToRefreshBase<GridView> refreshView) {
                        // TODO Auto-generated method stub
                        i++;
                          new Thread(){
                               public void run() {
                                   url="http://apis.juhe.cn/goodbook/query?key=9d6ef8c31647a206e05fcaff70527182&catalog_id=246&rn=50&rn="+i;
                                   getClient();
                                   Gson g=new Gson();
                                DataDemo dd=g.fromJson(str, DataDemo.class);
                                List<Demo> list=dd.getResult().getData();
                                data.addAll(list);
                                
                                   handler.sendEmptyMessage(3);
                                   
                               };
                           }.start();
                    }
                });
            
        }
    private void init() {
        // TODO Auto-generated method stub
           new Thread(){
               public void run() {
                   url="http://apis.juhe.cn/goodbook/query?key=9d6ef8c31647a206e05fcaff70527182&catalog_id=246&rn=50&rn=10";
                   getClient();
                   Gson g=new Gson();
                DataDemo dd=g.fromJson(str, DataDemo.class);
                data=dd.getResult().getData();
                  handler.sendEmptyMessage(0);
                
               };
           }.start();
    }
      private void getClient() {
            // TODO Auto-generated method stub
            HttpClient  client=new DefaultHttpClient();
            HttpGet get=new HttpGet(url);
            try {
                HttpResponse response=client.execute(get);
                 StatusLine  statusLine=response.getStatusLine();
                 int statusCode=statusLine.getStatusCode();
                 if(statusCode==200){
                     HttpEntity  entity=response.getEntity();
                     str=EntityUtils.toString(entity,"utf-8");
                    
                 }
                
            } catch (ClientProtocolException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
        };
}

grid.vml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

  
   
   <com.handmark.pulltorefresh.library.PullToRefreshGridView
        xmlns:ptr="http://schemas.android.com/apk/res-auto"
        android:id="@+id/grid_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:numColumns="2"
        ptr:ptrDrawable="@drawable/ic_launcher"
        ptr:ptrMode="both" />
</LinearLayout>

NetWorkUtil.class:

package com.example.map_one_dinwei;

import java.io.IOException;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.params.HttpClientParams;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.util.EntityUtils;

import android.os.DeadObjectException;

public class Networkutil {
        public static String httpol(String url){
            String result="";
            
            HttpGet httpGet=new HttpGet(url);
            //设置请求参数
            HttpParams parmars=new BasicHttpParams();
         HttpConnectionParams.setConnectionTimeout(parmars, 5000);
//            HttpConnectionParams.setSoTimeout(parmars, 5*100);
            HttpClient httpClient=new DefaultHttpClient(parmars);
            try {
                HttpResponse httpResponse=httpClient.execute(httpGet);
                int len=httpResponse.getStatusLine().getStatusCode();
                if(len==200){
                    HttpEntity httpEntity=httpResponse.getEntity();
                    result=EntityUtils.toString(httpEntity, "utf-8");
                    
                }
                
                
            } catch (ClientProtocolException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
            
            
            
            
            
            
            
            return result;
        }
}

解析数据参照上面发的两个随笔：