我想大家可能都有过这样的经历：兜里揣着一张银行卡，在街上到处找自动取款机(ATM)。在这个场景中，ATM就是的兴趣点，我们想做的事情就是找到离自己较近的一些ATM然后取款，此时我们并不关心附近有哪些超市、酒吧，因为这些地方没办法取钱！

说了这么多，一方面是加深大家对POI这个词的认识，另一方面也是为了让大家明白我们接下来要做的事情。理论性的东西就不再多讲了，直接来看例子。

先给大家展示下效果图：

详细界面：

该示例主要介绍关键词查询、suggestion查询和查看餐饮类Place详情页功能，尤其搜索某个地方的餐厅、理发店等等比较有实际意义，百度Demo代码如下：

Activity：

package com.home;

import android.app.Activity;

import android.os.Bundle;

import android.text.Editable;

import android.text.TextWatcher;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.AutoCompleteTextView;

import android.widget.EditText;

import android.widget.Toast;

import com.baidu.mapapi.BMapManager;

import com.baidu.mapapi.map.MapView;

import com.baidu.mapapi.search.MKAddrInfo;

import com.baidu.mapapi.search.MKBusLineResult;

import com.baidu.mapapi.search.MKDrivingRouteResult;

import com.baidu.mapapi.search.MKPoiInfo;

import com.baidu.mapapi.search.MKPoiResult;

import com.baidu.mapapi.search.MKSearch;

import com.baidu.mapapi.search.MKSearchListener;

import com.baidu.mapapi.search.MKShareUrlResult;

import com.baidu.mapapi.search.MKSuggestionInfo;

import com.baidu.mapapi.search.MKSuggestionResult;

import com.baidu.mapapi.search.MKTransitRouteResult;

import com.baidu.mapapi.search.MKWalkingRouteResult;

/**

* 演示poi搜索功能

*/

public class PoiSearchActivity extends Activity {

private MapView mMapView = null;

private MKSearch mSearch = null; // 搜索模块，也可去掉地图模块独立使用

/**

* 搜索关键字输入窗口

*/

private AutoCompleteTextView keyWorldsView = null;

private ArrayAdapter sugAdapter = null;

private int load_Index;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

DemoApplication app = (DemoApplication) this.getApplication();

if (app.mBMapManager == null) {

app.mBMapManager = new BMapManager(this);

app.mBMapManager.init(DemoApplication.strKey,

new DemoApplication.MyGeneralListener());

}

setContentView(R.layout.activity_poisearch);

mMapView = (MapView) findViewById(R.id.bmapView);

mMapView.getController().enableClick(true);

mMapView.getController().setZoom(12);

// 初始化搜索模块，注册搜索事件监听

mSearch = new MKSearch();

mSearch.init(app.mBMapManager, new MKSearchListener() {

// 在此处理详情页结果

@Override

public void onGetPoiDetailSearchResult(int type, int error) {

if (error != 0) {

Toast.makeText(PoiSearchActivity.this, "抱歉，未找到结果",

Toast.LENGTH_SHORT).show();

} else {

Toast.makeText(PoiSearchActivity.this, "成功，查看详情页面",

Toast.LENGTH_SHORT).show();

}

}

/**

* 在此处理poi搜索结果

*/

public void onGetPoiResult(MKPoiResult res, int type, int error) {

// 错误号可参考MKEvent中的定义

if (error != 0 || res == null) {

Toast.makeText(PoiSearchActivity.this, "抱歉，未找到结果",

Toast.LENGTH_LONG).show();

return;

}

// 将地图移动到第一个POI中心点

if (res.getCurrentNumPois() > 0) {

// 将poi结果显示到地图上

MyPoiOverlay poiOverlay = new MyPoiOverlay(

PoiSearchActivity.this, mMapView, mSearch);

poiOverlay.setData(res.getAllPoi());

mMapView.getOverlays().clear();

mMapView.getOverlays().add(poiOverlay);

mMapView.refresh();

// 当ePoiType为2(公交线路)或4(地铁线路)时， poi坐标为空

for (MKPoiInfo info : res.getAllPoi()) {

if (info.pt != null) {

mMapView.getController().animateTo(info.pt);

break;

}

}

} else if (res.getCityListNum() > 0) {

// 当输入关键字在本市没有找到，但在其他城市找到时，返回包含该关键字信息的城市列表

String strInfo = "在";

for (int i = 0; i < res.getCityListNum(); i++) {

strInfo += res.getCityListInfo(i).city;

strInfo += ",";

}

strInfo += "找到结果";

Toast.makeText(PoiSearchActivity.this, strInfo,

Toast.LENGTH_LONG).show();

}

}

public void onGetDrivingRouteResult(MKDrivingRouteResult res,

int error) {

}

public void onGetTransitRouteResult(MKTransitRouteResult res,

int error) {

}

public void onGetWalkingRouteResult(MKWalkingRouteResult res,

int error) {

}

public void onGetAddrResult(MKAddrInfo res, int error) {

}

public void onGetBusDetailResult(MKBusLineResult result, int iError) {

}

/**

* 更新建议列表

*/

@Override

public void onGetSuggestionResult(MKSuggestionResult res, int arg1) {

if (res == null || res.getAllSuggestions() == null) {

return;

}

sugAdapter.clear();

for (MKSuggestionInfo info : res.getAllSuggestions()) {

if (info.key != null)

sugAdapter.add(info.key);

}

sugAdapter.notifyDataSetChanged();

}

@Override

public void onGetShareUrlResult(MKShareUrlResult result, int type,

int error) {

}

});

keyWorldsView = (AutoCompleteTextView) findViewById(R.id.searchkey);

sugAdapter = new ArrayAdapter(this,

android.R.layout.simple_dropdown_item_1line);

keyWorldsView.setAdapter(sugAdapter);

/**

* 当输入关键字变化时，动态更新建议列表

*/

keyWorldsView.addTextChangedListener(new TextWatcher() {

@Override

public void afterTextChanged(Editable arg0) {

}

@Override

public void beforeTextChanged(CharSequence arg0, int arg1,

int arg2, int arg3) {

}

@Override

public void onTextChanged(CharSequence cs, int arg1, int arg2,

int arg3) {

if (cs.length() <= 0) {

return;

}

String city = ((EditText) findViewById(R.id.city)).getText()

.toString();

/**

* 使用建议搜索服务获取建议列表，结果在onSuggestionResult()中更新

*/

mSearch.suggestionSearch(cs.toString(), city);

}

});

}

@Override

protected void onPause() {

mMapView.onPause();

super.onPause();

}

@Override

protected void onResume() {

mMapView.onResume();

super.onResume();

}

@Override

protected void onDestroy() {

mMapView.destroy();

super.onDestroy();

}

@Override

protected void onSaveInstanceState(Bundle outState) {

super.onSaveInstanceState(outState);

mMapView.onSaveInstanceState(outState);

}

@Override

protected void onRestoreInstanceState(Bundle savedInstanceState) {

super.onRestoreInstanceState(savedInstanceState);

mMapView.onRestoreInstanceState(savedInstanceState);

}

/**

* 影响搜索按钮点击事件

*

* @param v

*/

public void searchButtonProcess(View v) {

EditText editCity = (EditText) findViewById(R.id.city);

EditText editSearchKey = (EditText) findViewById(R.id.searchkey);

mSearch.poiSearchInCity(editCity.getText().toString(), editSearchKey

.getText().toString());

}

public void goToNextPage(View v) {

// 搜索下一组poi

int flag = mSearch.goToPoiPage(++load_Index);

if (flag != 0) {

Toast.makeText(PoiSearchActivity.this, "先搜索开始，然后再搜索下一组数据",

Toast.LENGTH_SHORT).show();

}

}

}

布局XML(activity_poisearch)：

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical" >

android:layout_width="fill_parent"

android:layout_height="50dip"

android:orientation="horizontal" >

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="在" >

android:id="@+id/city"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:text="北京" />

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="市内找" >

android:id="@+id/searchkey"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_weight="0.88"

android:text="餐厅" />

android:layout_width="fill_parent"

android:layout_height="50dip"

android:orientation="horizontal" >

android:id="@+id/search"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_weight="12"

android:background="@drawable/button_style"

android:onClick="searchButtonProcess"

android:padding="10dip"

android:text="开始" />

android:id="@+id/map_next_data"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_weight="12"

android:background="@drawable/button_style"

android:onClick="goToNextPage"

android:padding="10dip"

android:text="下一组数据" />

android:id="@+id/bmapView"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:clickable="true" />

MyPoiOverlay类

package com.home;

import android.app.Activity;

import com.baidu.mapapi.map.MapView;

import com.baidu.mapapi.map.PoiOverlay;

import com.baidu.mapapi.search.MKPoiInfo;

import com.baidu.mapapi.search.MKSearch;

public class MyPoiOverlay extends PoiOverlay {

MKSearch mSearch;

public MyPoiOverlay(Activity activity, MapView mapView, MKSearch search) {

super(activity, mapView);

mSearch = search;

}

@Override

protected boolean onTap(int i) {

super.onTap(i);

MKPoiInfo info = getPoi(i);

if (info.hasCaterDetails) {

mSearch.poiDetailSearch(info.uid);

}

return true;

}

}

在配置文件中要比之前多配置一个activity，不然没法查看详细界面，这是百度SDK jar中提供的类：

android:name="com.baidu.mapapi.search.PlaceCaterActivity"

android:configChanges="orientation|keyboardHidden"

android:theme="@android:style/Theme.NoTitleBar" >

Application类同之前。