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<String> 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<String>(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）：
<"1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <LinearLayout android:layout_width="fill_parent" android:layout_height="50dip" android:orientation="horizontal" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="在" > </TextView> <EditText android:id="@+id/city" android:layout_width="wrap_content" android:layout_height="match_parent" android:text="北京" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="市内找" > </TextView> <AutoCompleteTextView android:id="@+id/searchkey" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="0.88" android:text="餐厅" /> </LinearLayout> <LinearLayout android:layout_width="fill_parent" android:layout_height="50dip" android:orientation="horizontal" > <Button 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" /> <Button 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" /> </LinearLayout> <com.baidu.mapapi.map.MapView android:id="@+id/bmapView" android:layout_width="fill_parent" android:layout_height="fill_parent" android:clickable="true" /> </LinearLayout>
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：
<activity android:name="com.baidu.mapapi.search.PlaceCaterActivity" android:configChanges="orientation|keyboardHidden" android:theme="@android:style/Theme.NoTitleBar" > </activity>
Application类同之前。
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