定位、列表展示

1、定位城市并展示列表信息

package com.bwie.fuxi_yuekao;

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.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.TextView;

import com.baidu.location.Address;
import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.location.LocationClientOption.LocationMode;
import com.baidu.mapapi.SDKInitializer;
import com.bwie.adapter.MyAdapter;
import com.bwie.utils.MyUtils;
import com.bwie.vo.XmlBean;
import com.bwie.vo.XmlBean.Myitem;
import com.thoughtworks.xstream.XStream;

public class MainActivity extends Activity {

    private String URL = "http://apis.juhe.cn/goodbook/catalog?key=9d6ef8c31647a206e05fcaff70527182&dtype=xml";

    @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);

        //找控件
        init();

        // 声明locationclient对象
        locationClient = new LocationClient(getApplicationContext());
        // 注册监听函数
        locationClient.registerLocationListener(bdlisten);
        // 设置定位的参数
        initLocation();
        // 开始定位
        locationClient.start();

        // 请求网络数据
        new MyAsyn().execute(URL);

    }

    private void init() {
        // TODO Auto-generated method stub

        lv = (ListView) findViewById(R.id.lv);
        tv_city = (TextView) findViewById(R.id.tv_city);

    }

    class MyAsyn extends AsyncTask<String, String, String> {

        @Override
        protected String doInBackground(String... params) {
            // TODO Auto-generated method stub
            //请求网络数据
            String webdata = MyUtils.getWebColumn(params[0]);
            System.out.println(webdata+"============");
            return webdata;
        }

        @Override
        protected void onPostExecute(String result) {
            super.onPostExecute(result);

            //获取请求的数据

            XStream xStream = new XStream();
            xStream.processAnnotations(XmlBean.class);
            XmlBean fromXML = (XmlBean) xStream.fromXML(result);
            final List<Myitem> item = fromXML.result.item;

            //为lv设置适配器
            lv.setAdapter(new MyAdapter(MainActivity.this, item));
            //为lv设置条目点击监听事件
            lv.setOnItemClickListener(new OnItemClickListener() {

                @Override
                public void onItemClick(AdapterView<?> parent, View view,
                        int position, long id) {
                    // TODO Auto-generated method stub

                    Intent intent=new Intent(MainActivity.this,InfoActivity.class);
                    intent.putExtra("id", item.get(position).id);
                    startActivity(intent);

                }
            });

        }

    }

    BDLocationListener bdlisten = new BDLocationListener() {

        @Override
        public void onReceiveLocation(BDLocation arg0) {
            // TODO Auto-generated method stub

            // 获取定位的位置
            String address = arg0.getStreet();
            double latitude = arg0.getLatitude();
            String city = arg0.getCity();
            tv_city.setText("定位城市："+city);
            Log.i("TAG", city + "================");

        }
    };
    private LocationClient locationClient;
    private ListView lv;
    private TextView tv_city;

    private void initLocation() {
        LocationClientOption option = new LocationClientOption();
        option.setLocationMode(LocationMode.Hight_Accuracy);// 可选，默认高精度，设置定位模式，高精度，低功耗，仅设备
        option.setCoorType("bd09ll");// 可选，默认gcj02，设置返回的定位结果坐标系
        int span = 1000;
        option.setScanSpan(span);// 可选，默认0，即仅定位一次，设置发起定位请求的间隔需要大于等于1000ms才是有效的
        option.setIsNeedAddress(true);// 可选，设置是否需要地址信息，默认不需要
        option.setOpenGps(true);// 可选，默认false,设置是否使用gps
        option.setLocationNotify(true);// 可选，默认false，设置是否当gps有效时按照1S1次频率输出GPS结果
        option.setIsNeedLocationDescribe(true);// 可选，默认false，设置是否需要位置语义化结果，可以在BDLocation.getLocationDescribe里得到，结果类似于“在北京天安门附近”
        option.setIsNeedLocationPoiList(true);// 可选，默认false，设置是否需要POI结果，可以在BDLocation.getPoiList里得到
        option.setIgnoreKillProcess(false);// 可选，默认true，定位SDK内部是一个SERVICE，并放到了独立进程，设置是否在stop的时候杀死这个进程，默认不杀死
        option.SetIgnoreCacheException(false);// 可选，默认false，设置是否收集CRASH信息，默认收集
        option.setEnableSimulateGps(false);// 可选，默认false，设置是否需要过滤gps仿真结果，默认需要
        locationClient.setLocOption(option);
    }

}

展示对应类型图书的信息

package com.bwie.fuxi_yuekao;

import java.util.ArrayList;
import java.util.List;

import android.R.bool;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.text.format.DateUtils;
import android.util.Log;
import android.view.KeyEvent;
import android.widget.GridView;
import android.widget.Toast;

import com.bwie.adapter.MyAda_info;
import com.bwie.utils.MyUtils;
import com.bwie.vo.MyData;
import com.bwie.vo.SuperClass;
import com.google.gson.Gson;
import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener2;
import com.handmark.pulltorefresh.library.PullToRefreshGridView;

public class InfoActivity extends Activity {

    private PullToRefreshGridView gv;
    private boolean isExit=false;
    private String Url = "http://apis.juhe.cn/goodbook/query?key=9d6ef8c31647a206e05fcaff70527182";
    int req = 1;
    int load = 1;
    private String id;

    Handler handler = new Handler() {
        public void handleMessage(android.os.Message msg) {

            if(msg.what == 1)
            {
                List<MyData> list = (List<MyData>) msg.obj;
                // 为handler设置适配器
                gv.setAdapter(new MyAda_info(InfoActivity.this, list));
            }

            if(msg.what == 0)
            {
                isExit = false;
            }

        };
    };
    private ArrayList<MyData> dlist;

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

        dlist = new ArrayList<MyData>();
        // 获取跳转传来的值
        Intent intent = getIntent();
        id = intent.getStringExtra("id");

        // 得到控件
        gv = (PullToRefreshGridView) findViewById(R.id.pull_refresh_grid);

        // 请求网络数据
        reqData(Url, req, id);

        // 实现上拉加载、下拉刷新的功能
        gv.setOnRefreshListener(new OnRefreshListener2<GridView>() {

            @Override
            public void onPullDownToRefresh(
                    PullToRefreshBase<GridView> refreshView) {
                Log.e("TAG", "onPullDownToRefresh"); // Do work to
                String label = DateUtils.formatDateTime(
                        getApplicationContext(), System.currentTimeMillis(),
                        DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_SHOW_DATE
                                | DateUtils.FORMAT_ABBREV_ALL);

                // Update the LastUpdatedLabel
                refreshView.getLoadingLayoutProxy().setLastUpdatedLabel(label);

                // 请求网络数据
                reqData(Url, req, id);

                // 取消刷新
                gv.onRefreshComplete();

            }

            @Override
            public void onPullUpToRefresh(
                    PullToRefreshBase<GridView> refreshView) {
                Log.e("TAG", "onPullUpToRefresh"); // Do work to refresh
                                                    // the list here.
                // 请求网络数据
                load++;
                reqData(Url, load, id);

                // 取消刷新
                gv.onRefreshComplete();
            }
        });
    }

    private void reqData(final String url, final int req, final String id) {

        new Thread() {
            public void run() {
                // 请求网络数据
                String data = MyUtils.getWebData(url, req, id);

                // 进行解析json数据
                Gson g = new Gson();
                SuperClass sc = g.fromJson(data, SuperClass.class);

                if (sc != null) {
                    List<MyData> list = sc.getResult().getData();

                    dlist.addAll(list);

                    // 将数据发送给主线程
                    handler.sendMessage(handler.obtainMessage(1, dlist));
                }

            };
        }.start();

    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            exit();
            return false;
        }
        return super.onKeyDown(keyCode, event);
    }

    private void exit() {
        if (!isExit) {
            isExit = true;
            Toast.makeText(getApplicationContext(), "再按一次退出程序",
                    Toast.LENGTH_SHORT).show();
            // 利用handler延迟发送更改状态信息
            handler.sendEmptyMessageDelayed(0, 2000);
        } else {
            finish();
            System.exit(0);
        }
    }

}

请求网络数据封装类

package com.bwie.utils;

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.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;

public class MyUtils {

    //获取网络列表
    public static String getWebColumn(String URL)
    {
        String data ="";
        //创建请求对象
        HttpGet httpGet = new HttpGet(URL);

        //设置参数
        HttpParams params=new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(params, 5000);
        HttpConnectionParams.setSoTimeout(params, 5000);
        //执行请求的对象
        HttpClient client=new DefaultHttpClient(params);
        //执行请求镀锡
        try {
            HttpResponse resp = client.execute(httpGet);

            //判断是否响应成功
            if(resp.getStatusLine().getStatusCode() == 200)
            {
                //获取响应 的数据
                HttpEntity entity = resp.getEntity();

                data = 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();
        }

        return data;
    }
    //获取网络列表
    public static String getWebData(String URL,int p,String id)
    {
        StringBuffer sb=new StringBuffer(URL);
        sb.append("&catalog_id="+id);
        sb.append("&pn="+p);

        String data ="";
        //创建请求对象
        HttpGet httpGet = new HttpGet(sb.toString());
        //设置参数
        HttpParams params=new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(params, 5000);
        HttpConnectionParams.setSoTimeout(params, 5000);
        //执行请求的对象
        HttpClient client=new DefaultHttpClient(params);
        //执行请求镀锡
        try {
            HttpResponse resp = client.execute(httpGet);

            //判断是否响应成功
            if(resp.getStatusLine().getStatusCode() == 200)
            {
                //获取响应 的数据
                HttpEntity entity = resp.getEntity();

                data = 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();
        }

        return data;
    }

}

解析xml、json文件的Javabean类

package com.bwie.vo;

import java.util.List;

import com.thoughtworks.xstream.annotations.XStreamAlias;
import com.thoughtworks.xstream.annotations.XStreamImplicit;

@XStreamAlias("root")
public class XmlBean {

    public String resultcode;
    public String reason;
    public Myresult result;
    public String error_code;

    @XStreamAlias("result")
    public class Myresult {

        @XStreamImplicit(itemFieldName = "item")
        public List<Myitem> item;

    }

    public class Myitem {

        public String id;
        public String catalog;
    }

}

xml上拉加载，下拉刷新

<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=".InfoActivity" >

    <!-- The PullToRefreshGridView replaces a standard GridView widget. -->

    <com.handmark.pulltorefresh.library.PullToRefreshGridView
        xmlns:ptr="http://schemas.android.com/apk/res-auto"
        android:id="@+id/pull_refresh_grid"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:columnWidth="100dp"
        android:gravity="center_horizontal"
        android:horizontalSpacing="1dp"
        android:numColumns="auto_fit"
        android:stretchMode="columnWidth"
        android:verticalSpacing="1dp"
        ptr:ptrDrawable="@drawable/ic_launcher"
        ptr:ptrMode="both" />

</RelativeLayout>

manifestxml中的相关设置

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.bwie.fuxi_yuekao"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.GET_TASKS" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_SETTINGS" />
    <!-- 这个权限用于进行网络定位 -->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" >
    </uses-permission>
    <!-- 这个权限用于访问GPS定位 -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" >
    </uses-permission>
    <!-- 用于访问wifi网络信息，wifi信息会用于进行网络定位 -->
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" >
    </uses-permission>
    <!-- 获取运营商信息，用于支持提供运营商信息相关的接口 -->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" >
    </uses-permission>
    <!-- 这个权限用于获取wifi的获取权限，wifi信息会用来进行网络定位 -->
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" >
    </uses-permission>
    <!-- 用于读取手机当前的状态 -->
    <uses-permission android:name="android.permission.READ_PHONE_STATE" >
    </uses-permission>
    <!-- 写入扩展存储，向扩展卡写入数据，用于写入离线定位数据 -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" >
    </uses-permission>
    <!-- 访问网络，网络定位需要上网 -->
    <uses-permission android:name="android.permission.INTERNET" />
    <!-- SD卡读取权限，用户写入离线定位数据 -->
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" >
    </uses-permission>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <meta-data
            android:name="com.baidu.lbsapi.API_KEY"
            android:value="TglpW0F8H0GhNQk55Wjs8KtbLGIrB6dh" />

        <activity
            android:name="com.bwie.fuxi_yuekao.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <service
            android:name="com.baidu.location.f"
            android:enabled="true"
            android:process=":remote" >
        </service>

        <activity
            android:name="com.bwie.fuxi_yuekao.InfoActivity"
            android:label="@string/title_activity_info" >
        </activity>
    </application>

</manifest>