POI搜索有三种方式。依据范围和检索词发起范围检索poiSearchInbounds。城市poi检索poiSearchInCity，周边检索poiSearchNearBy。
下以周边检索为例介绍怎样进行检索并显示覆盖物PoiOverlay：
public int poiSearchNearBy(java.lang.String key, GeoPoint pt,
int radius)
- 依据中心点、半径与检索词发起周边检索.
- 异步函数，返回结果在MKSearchListener里的onGetPoiResult方法通知
- 參数：
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key - 关键词
- pt - 中心点地理坐标
- radius - 半径。单位:米
- 返回：
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成功返回0，否则返回-1
Demo: 检索天安门周边5000米之内的KFC餐厅
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mMKSearch.poiSearchNearBy("KFC", new GeoPoint((int) (39.915 * 1E6), (int) (116.404 * 1E6)), 5000);
实现MySearchListener的onGetPoiResult，并展示检索结果：
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public void onGetPoiResult(MKPoiResult result, int type, int iError) {
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if (result == null) {
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return;
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}
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PoiOverlay poioverlay = new PoiOverlay(MyMapActivity.this, mMapView);
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poioverlay.setData(result.getAllPoi());
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mMapView.getOverlays().add(poioverlay);
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}
详细实现：
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package xiaosi.baiduMap;
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import android.os.Bundle;
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import com.baidu.mapapi.BMapManager;
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import com.baidu.mapapi.GeoPoint;
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import com.baidu.mapapi.MKAddrInfo;
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import com.baidu.mapapi.MKDrivingRouteResult;
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import com.baidu.mapapi.MKPoiResult;
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import com.baidu.mapapi.MKSearch;
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import com.baidu.mapapi.MKSearchListener;
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import com.baidu.mapapi.MKTransitRouteResult;
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import com.baidu.mapapi.MKWalkingRouteResult;
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import com.baidu.mapapi.MapActivity;
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import com.baidu.mapapi.MapController;
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import com.baidu.mapapi.MapView;
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import com.baidu.mapapi.PoiOverlay;
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public class BaiduMapActivity extends MapActivity
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{
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private BMapManager mapManager = null;
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private String key = "1B79478DA01F7800AEA8602517A6D89B38151105";
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private MapView mapView = null;
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@Override
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public void onCreate(Bundle savedInstanceState)
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{
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super.onCreate(savedInstanceState);
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setContentView(R.layout.main);
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mapManager = new BMapManager(getApplication());
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mapManager.init(key, null);
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super.initMapActivity(mapManager);
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mapView = (MapView) findViewById(R.id.mapsView);
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mapView.setBuiltInZoomControls(true);
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MapController mapController = mapView.getController();
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mapController.setZoom(12);
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MKSearch mKSearch = new MKSearch();
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mKSearch.init(mapManager, new MySearchListener());
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mKSearch.poiSearchNearBy("KFC", new GeoPoint((int) (39.915 * 1E6),
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(int) (116.404 * 1E6)), 5000);
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}
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public class MySearchListener implements MKSearchListener
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{
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public void onGetAddrResult(MKAddrInfo arg0, int arg1)
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{}
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public void onGetDrivingRouteResult(MKDrivingRouteResult arg0, int arg1)
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{}
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public void onGetPoiResult(MKPoiResult arg0, int arg1, int arg2)
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{
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if (arg0 == null) {
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return;
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}
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PoiOverlay poioverlay = new PoiOverlay(BaiduMapActivity.this, mapView);
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poioverlay.setData(arg0.getAllPoi());
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mapView.getOverlays().add(poioverlay);
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}
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public void onGetTransitRouteResult(MKTransitRouteResult arg0, int arg1)
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{}
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public void onGetWalkingRouteResult(MKWalkingRouteResult arg0, int arg1)
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{}
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}
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@Override
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protected boolean isRouteDisplayed()
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{
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return false;
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}
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@Override
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protected void onDestroy()
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{
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if (mapManager != null)
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{
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mapManager.destroy();
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mapManager = null;
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}
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super.onDestroy();
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}
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@Override
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protected void onPause()
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{
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if (mapManager != null)
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{
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mapManager.stop();
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}
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super.onPause();
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}
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@Override
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protected void onResume()
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{
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if (mapManager != null)
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{
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mapManager.start();
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}
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super.onResume();
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}
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}
