转载请注明出处：http://blog.csdn.net/Alpha58/article/details/57079874

前言

由于项目中需要实现搜索附近位置作为收获地址，所以采用了高德地图的关键字检索POI来实现。官方Demo看了很复杂，估计很多人都不想看。但是看了我写的Demo你就会觉得So Easy啦！

先上效果图

高德提供了千万级别的 POI（Point of Interest，兴趣点）。在地图表达中，一个 POI 可代表一栋大厦、一家商铺、一处景点等等。通过POI搜索，完成找餐馆、找景点、找厕所等等的功能。地图 SDK 的搜索功能提供多种获取 POI 数据的接口，下面说的是根据关键字检索POI

1，要实现关键字搜索POI，当然要先集成高德地图到你的项目中去

集成高德地图见我的另一边文章：Android项目实战(一)——高德地图集成

2，下面来看实现关键字搜索POI的具体代码

1，创建activity_poi_keyword_search.xml布局文件，如下：

<?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"><EditText
        android:id="@+id/et_keyword"android:layout_width="match_parent"android:layout_height="50dp"android:background="@color/white"android:hint="请输入地址关键字搜索"android:paddingLeft="8dp"android:textColor="@color/deep_black"android:textSize="14sp"/><View
        android:layout_width="match_parent"android:layout_height="1dp"android:background="@color/line_color"/><android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"android:layout_width="match_parent"android:layout_height="match_parent"></android.support.v7.widget.RecyclerView></LinearLayout>

2，创建recyclerview的item布局item_poi_keyword_search.xml,如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    android:id="@+id/ll_item_layout"xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="wrap_content"android:background="@color/white"android:orientation="vertical"><View
        android:layout_width="match_parent"android:layout_height="0.5dp"android:background="@color/line_color"/><LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="vertical"android:paddingBottom="8dp"android:paddingLeft="10dp"android:paddingRight="10dp"android:paddingTop="8dp"><TextView
            android:id="@+id/tv_detailAddress"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:text="世界之窗"android:textColor="@color/deep_black"android:textSize="16sp"/><TextView
            android:id="@+id/tv_content"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:text="1号线"android:textColor="@color/shallow_black"android:textSize="16sp"/></LinearLayout>
</LinearLayout>

3，创建实体类PoiAddressBean，如下：

package com.alpha58.poidemo.bean;import java.io.Serializable;/*** author           Alpha58* time             2017/2/25 10:48* desc             ${TODO}* <p>* upDateAuthor     $Author$* upDate           $Date$* upDateDesc       ${TODO}*/
public class PoiAddressBean implements Serializable {private String longitude;//经度private String latitude;//纬度private String text;//信息内容public  String detailAddress;//详细地址 (搜索的关键字)public  String province;//省public  String city;//城市public  String district;//区域(宝安区)public PoiAddressBean(String lon, String lat, String detailAddress, String text, String province, String city, String district){this.longitude = lon;this.latitude = lat;this.text = text;this.detailAddress = detailAddress;this.province = province;this.city = city;this.district = district;}public String getLongitude() {return longitude;}public String getLatitude() {return latitude;}public String getText() {return text;}public String getDetailAddress() {return detailAddress;}public String getProvince() {return province;}public String getCity() {return city;}public String getDistrict() {return district;}}

,4，创建适配器PoiKeywordSearchAdapter，如下：

package com.alpha58.poidemo.adapter;import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;import com.alpha58.poidemo.activity.PoiKeywordSearchActivity;
import com.alpha58.poidemo.R;
import com.alpha58.poidemo.bean.PoiAddressBean;
import java.util.List;/*** author           Alpha58* time             2017/2/25 10:48* desc             ${TODO}* <p>* upDateAuthor     $Author$* upDate           $Date$* upDateDesc       ${TODO}*/
public class PoiKeywordSearchAdapter extends RecyclerView.Adapter<PoiKeywordSearchAdapter.MyViewHolder> {List<PoiAddressBean> poiAddressBean;Context mContext;public PoiKeywordSearchAdapter(Context context, List<PoiAddressBean> poiAddressBean) {this.poiAddressBean  = poiAddressBean;this.mContext = context;}@Overridepublic MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {View view;view = LayoutInflater.from(mContext).inflate(R.layout.item_poi_keyword_search, parent, false);return new MyViewHolder(view);}@Overridepublic void onBindViewHolder(MyViewHolder holder, int position) {final PoiAddressBean poiAddressBean = this.poiAddressBean.get(position);holder.tv_detailAddress.setText(poiAddressBean.getDetailAddress());holder.tv_content.setText(poiAddressBean.getText());holder.ll_item_layout.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {((PoiKeywordSearchActivity)mContext).setDetailAddress(poiAddressBean.getDetailAddress());}});}@Overridepublic int getItemCount() {if (poiAddressBean != null) {return poiAddressBean.size();} else {return 0;}}class MyViewHolder extends RecyclerView.ViewHolder {TextView     tv_content;TextView     tv_detailAddress;LinearLayout ll_item_layout;public MyViewHolder(View itemView) {super(itemView);tv_detailAddress = (TextView) itemView.findViewById(R.id.tv_detailAddress);tv_content = (TextView) itemView.findViewById(R.id.tv_content);ll_item_layout = (LinearLayout) itemView.findViewById(R.id.ll_item_layout);}}
}

5，创建搜索界面类PoiKeywordSearchActivity （主要代码都在这里），如下：

package com.alpha58.poidemo.activity;import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;import com.alpha58.poidemo.R;
import com.alpha58.poidemo.adapter.PoiKeywordSearchAdapter;
import com.alpha58.poidemo.bean.PoiAddressBean;
import com.alpha58.poidemo.util.ToastUtil;
import com.amap.api.services.core.AMapException;
import com.amap.api.services.core.LatLonPoint;
import com.amap.api.services.core.PoiItem;
import com.amap.api.services.core.SuggestionCity;
import com.amap.api.services.poisearch.PoiResult;
import com.amap.api.services.poisearch.PoiSearch;import java.util.ArrayList;
import java.util.List;/*** author           Alpha58* time             2017/2/25 10:48* desc             ${Poi关键字搜索}* <p>* upDateAuthor     $Author$* upDate           $Date$* upDateDesc       ${TODO}*/
public class PoiKeywordSearchActivity extends AppCompatActivity implements PoiSearch.OnPoiSearchListener {private RecyclerView mRecyclerView;private EditText mEt_keyword;private String keyWord = "";// 要输入的poi搜索关键字private PoiResult poiResult; // poi返回的结果private int currentPage = 0;// 当前页面，从0开始计数private PoiSearch.Query query;// Poi查询条件类private PoiSearch       poiSearch;// POI搜索@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_poi_keyword_search);initView();initListener();initData();}private void initView() {mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);mEt_keyword = (EditText) findViewById(R.id.et_keyword);}private void initListener() {mEt_keyword.addTextChangedListener(new TextWatcher() {@Overridepublic void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}@Overridepublic void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {keyWord = String.valueOf(charSequence);if ("".equals(keyWord)) {ToastUtil.show(PoiKeywordSearchActivity.this,"请输入搜索关键字");return;} else {doSearchQuery();}}@Overridepublic void afterTextChanged(Editable editable) {}});}/*** 开始进行poi搜索*/protected void doSearchQuery() {currentPage = 0;//不输入城市名称有些地方搜索不到query = new PoiSearch.Query(keyWord, "", "深圳");// 第一个参数表示搜索字符串，第二个参数表示poi搜索类型，第三个参数表示poi搜索区域（空字符串代表全国）//这里没有做分页加载了,默认给50条数据query.setPageSize(50);// 设置每页最多返回多少条poiitemquery.setPageNum(currentPage);// 设置查第一页poiSearch = new PoiSearch(this, query);poiSearch.setOnPoiSearchListener(this);poiSearch.searchPOIAsyn();}private void initData() {mRecyclerView.setLayoutManager(new LinearLayoutManager(this));}/*** POI信息查询回调方法*/@Overridepublic void onPoiSearched(PoiResult result, int rCode) {if (rCode == AMapException.CODE_AMAP_SUCCESS) {if (result != null && result.getQuery() != null) {  // 搜索poi的结果if (result.getQuery().equals(query)) {  // 是否是同一条poiResult = result;ArrayList<PoiAddressBean> data = new ArrayList<PoiAddressBean>();//自己创建的数据集合// 取得搜索到的poiitems有多少页List<PoiItem> poiItems = poiResult.getPois();// 取得第一页的poiitem数据，页数从数字0开始List<SuggestionCity> suggestionCities = poiResult.getSearchSuggestionCitys();// 当搜索不到poiitem数据时，会返回含有搜索关键字的城市信息for(PoiItem item : poiItems){//获取经纬度对象LatLonPoint llp = item.getLatLonPoint();double lon = llp.getLongitude();double lat = llp.getLatitude();String title = item.getTitle();String text = item.getSnippet();String provinceName = item.getProvinceName();String cityName = item.getCityName();String adName = item.getAdName();data.add(new PoiAddressBean(String.valueOf(lon), String.valueOf(lat), title, text,provinceName,cityName,adName));}PoiKeywordSearchAdapter adapter = new PoiKeywordSearchAdapter(PoiKeywordSearchActivity.this,data);mRecyclerView.setAdapter(adapter);}} else {ToastUtil.show(PoiKeywordSearchActivity.this,getString(R.string.no_result));}} else {ToastUtil.showerror(this, rCode);}}/*** POI信息查询回调方法*/@Overridepublic void onPoiItemSearched(PoiItem item, int rCode) {// TODO Auto-generated method stub}/*** 设置详情地址* @param detailAddress*/public void setDetailAddress(String detailAddress) {mEt_keyword.setText(detailAddress);}
}

6，最后附上官方Demo中的吐司工具类ToastUtil，如下：

/*** */
package com.alpha58.poidemo.util;import android.content.Context;
import android.util.Log;
import android.widget.Toast;import com.amap.api.services.core.AMapException;public class ToastUtil {public static void show(Context context, String info) {Toast.makeText(context, info, Toast.LENGTH_LONG).show();}public static void show(Context context, int info) {Toast.makeText(context, info, Toast.LENGTH_LONG).show();}public static void showerror(Context context, int rCode){try {switch (rCode) {//服务错误码case 1001:throw new AMapException(AMapException.AMAP_SIGNATURE_ERROR);case 1002:throw new AMapException(AMapException.AMAP_INVALID_USER_KEY);case 1003:throw new AMapException(AMapException.AMAP_SERVICE_NOT_AVAILBALE);case 1004:throw new AMapException(AMapException.AMAP_DAILY_QUERY_OVER_LIMIT);case 1005:throw new AMapException(AMapException.AMAP_ACCESS_TOO_FREQUENT);case 1006:throw new AMapException(AMapException.AMAP_INVALID_USER_IP);case 1007:throw new AMapException(AMapException.AMAP_INVALID_USER_DOMAIN);case 1008:throw new AMapException(AMapException.AMAP_INVALID_USER_SCODE);case 1009:throw new AMapException(AMapException.AMAP_USERKEY_PLAT_NOMATCH);case 1010:throw new AMapException(AMapException.AMAP_IP_QUERY_OVER_LIMIT);case 1011:throw new AMapException(AMapException.AMAP_NOT_SUPPORT_HTTPS);case 1012:throw new AMapException(AMapException.AMAP_INSUFFICIENT_PRIVILEGES);case 1013:throw new AMapException(AMapException.AMAP_USER_KEY_RECYCLED);case 1100:throw new AMapException(AMapException.AMAP_ENGINE_RESPONSE_ERROR);case 1101:throw new AMapException(AMapException.AMAP_ENGINE_RESPONSE_DATA_ERROR);case 1102:throw new AMapException(AMapException.AMAP_ENGINE_CONNECT_TIMEOUT);case 1103:throw new AMapException(AMapException.AMAP_ENGINE_RETURN_TIMEOUT);case 1200:throw new AMapException(AMapException.AMAP_SERVICE_INVALID_PARAMS);case 1201:throw new AMapException(AMapException.AMAP_SERVICE_MISSING_REQUIRED_PARAMS);case 1202:throw new AMapException(AMapException.AMAP_SERVICE_ILLEGAL_REQUEST);case 1203:throw new AMapException(AMapException.AMAP_SERVICE_UNKNOWN_ERROR);//sdk返回错误case 1800:throw new AMapException(AMapException.AMAP_CLIENT_ERRORCODE_MISSSING);case 1801:throw new AMapException(AMapException.AMAP_CLIENT_ERROR_PROTOCOL);case 1802:throw new AMapException(AMapException.AMAP_CLIENT_SOCKET_TIMEOUT_EXCEPTION);case 1803:throw new AMapException(AMapException.AMAP_CLIENT_URL_EXCEPTION);case 1804:throw new AMapException(AMapException.AMAP_CLIENT_UNKNOWHOST_EXCEPTION);case 1806:throw new AMapException(AMapException.AMAP_CLIENT_NETWORK_EXCEPTION);case 1900:throw new AMapException(AMapException.AMAP_CLIENT_UNKNOWN_ERROR);case 1901:throw new AMapException(AMapException.AMAP_CLIENT_INVALID_PARAMETER);case 1902:throw new AMapException(AMapException.AMAP_CLIENT_IO_EXCEPTION);case 1903:throw new AMapException(AMapException.AMAP_CLIENT_NULLPOINT_EXCEPTION);//云图和附近错误码  case 2000:throw new AMapException(AMapException.AMAP_SERVICE_TABLEID_NOT_EXIST);case 2001:throw new AMapException(AMapException.AMAP_ID_NOT_EXIST);case 2002:throw new AMapException(AMapException.AMAP_SERVICE_MAINTENANCE);case 2003:throw new AMapException(AMapException.AMAP_ENGINE_TABLEID_NOT_EXIST);case 2100:throw new AMapException(AMapException.AMAP_NEARBY_INVALID_USERID);case 2101:throw new AMapException(AMapException.AMAP_NEARBY_KEY_NOT_BIND);case 2200:throw new AMapException(AMapException.AMAP_CLIENT_UPLOADAUTO_STARTED_ERROR);case 2201:throw new AMapException(AMapException.AMAP_CLIENT_USERID_ILLEGAL);case 2202:throw new AMapException(AMapException.AMAP_CLIENT_NEARBY_NULL_RESULT);case 2203:throw new AMapException(AMapException.AMAP_CLIENT_UPLOAD_TOO_FREQUENT);case 2204:throw new AMapException(AMapException.AMAP_CLIENT_UPLOAD_LOCATION_ERROR);//路径规划   case 3000:throw new AMapException(AMapException.AMAP_ROUTE_OUT_OF_SERVICE);case 3001:throw new AMapException(AMapException.AMAP_ROUTE_NO_ROADS_NEARBY);case 3002:throw new AMapException(AMapException.AMAP_ROUTE_FAIL);case 3003:throw new AMapException(AMapException.AMAP_OVER_DIRECTION_RANGE);//短传分享case 4000:throw new AMapException(AMapException.AMAP_SHARE_LICENSE_IS_EXPIRED);case 4001:throw new AMapException(AMapException.AMAP_SHARE_FAILURE);default:Toast.makeText(context,"查询失败："+rCode , Toast.LENGTH_LONG).show();logError("查询失败", rCode);break;}} catch (Exception e) {Toast.makeText(context, e.getMessage(), Toast.LENGTH_LONG).show();logError(e.getMessage(), rCode);}}private static void logError(String info, int errorCode) {print(LINE);//startprint("                                   错误信息                                     ");print(LINE);//titleprint(info);print("错误码: " + errorCode);print("                                                                               ");print("如果需要更多信息，请根据错误码到以下地址进行查询");print("  http://lbs.amap.com/api/android-sdk/guide/map-tools/error-code/");print("如若仍无法解决问题，请将全部log信息提交到工单系统，多谢合作");print(LINE);//end}//logpublic static final String TAG = "AMAP_ERROR";static final String LINE_CHAR="=";static final String BOARD_CHAR="|";static final int LENGTH = 80;static String LINE;static{StringBuilder sb = new StringBuilder();for(int i = 0;i<LENGTH;i++){sb .append(LINE_CHAR);}LINE = sb.toString();}private static void printLog(String s){if(s.length()<LENGTH-2){StringBuilder sb = new StringBuilder();sb.append(BOARD_CHAR).append(s);for(int i = 0 ;i <LENGTH-2-s.length();i++){sb.append(" ");}sb.append(BOARD_CHAR);print(sb.toString());}else{String line = s.substring(0,LENGTH-2);print(BOARD_CHAR+line+BOARD_CHAR);printLog(s.substring(LENGTH-2));}}private static void print(String s) {Log.i(TAG,s);}
}

大功告成！利用高德地图关键字检索POI就是这么简单！

源码地址：https://github.com/Alpha58/PoiDemo
注意：下载后直接运行会报“用户MD5安全码未通过”，因为该Demo用的是我自己在高德平台申请的KEY,
如果真的想要在我的Demo上测试你的Key,则需要替换清单文件中的key为你的。并且将项目的包名改为你申请key时的包名。

如果对你有帮助记得点赞，star哈~

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利用高德地图关键字检索POI-实现仿微信发朋友圈搜索附近位置

前言

先上效果图

1，要实现关键字搜索POI，当然要先集成高德地图到你的项目中去

2，下面来看实现关键字搜索POI的具体代码

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