android POI搜索，附近搜索，周边搜索定位介绍 _Android

志不强者智不达，言不信者行不果。这篇文章主要讲述android POI搜索，附近搜索，周边搜索定位介绍相关的知识，希望能为你提供帮助。
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：

【android POI搜索，附近搜索，周边搜索定位介绍】
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：

key - 关键词

pt - 中心点地理坐标

radius - 半径。单位:米

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
[java] view plaincopy

mMKSearch.poiSearchNearBy("KFC", new GeoPoint((int) (39.915 * 1E6), (int) (116.404 * 1E6)), 5000);

文章图片

实现MySearchListener的onGetPoiResult，并展示检索结果：
[java] view plaincopy

public void onGetPoiResult(MKPoiResult result, int type, int iError) {
if (result == null) {
return;
}
PoiOverlay poioverlay = new PoiOverlay(MyMapActivity.this, mMapView);
poioverlay.setData(result.getAllPoi());
mMapView.getOverlays().add(poioverlay);
}

详细实现：[java] view plaincopy

package xiaosi.baiduMap;
import android.os.Bundle;
import com.baidu.mapapi.BMapManager;
import com.baidu.mapapi.GeoPoint;
import com.baidu.mapapi.MKAddrInfo;
import com.baidu.mapapi.MKDrivingRouteResult;
import com.baidu.mapapi.MKPoiResult;
import com.baidu.mapapi.MKSearch;
import com.baidu.mapapi.MKSearchListener;
import com.baidu.mapapi.MKTransitRouteResult;
import com.baidu.mapapi.MKWalkingRouteResult;
import com.baidu.mapapi.MapActivity;
import com.baidu.mapapi.MapController;
import com.baidu.mapapi.MapView;
import com.baidu.mapapi.PoiOverlay;
public class BaiduMapActivity extends MapActivity
{
/** Called when the activity is first created. */
private BMapManager mapManager = null;
private String key = "1B79478DA01F7800AEA8602517A6D89B38151105";
private MapView mapView = null;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mapManager = new BMapManager(getApplication());
mapManager.init(key, null);
super.initMapActivity(mapManager);
mapView = (MapView) findViewById(R.id.mapsView);
mapView.setBuiltInZoomControls(true); // 设置启用内置的缩放控件
MapController mapController = mapView.getController(); // 得到mMapView的控制权,能够用它控制和驱动平移和缩放
mapController.setZoom(12); // 设置地图zoom级别
MKSearch mKSearch = new MKSearch();
mKSearch.init(mapManager, new MySearchListener()); // 注意。MKSearchListener仅仅支持一个。以最后一次设置为准
mKSearch.poiSearchNearBy("KFC", new GeoPoint((int) (39.915 * 1E6),
(int) (116.404 * 1E6)), 5000);
}
public class MySearchListener implements MKSearchListener
{
public void onGetAddrResult(MKAddrInfo arg0, int arg1)
{}
public void onGetDrivingRouteResult(MKDrivingRouteResult arg0, int arg1)
{}
public void onGetPoiResult(MKPoiResult arg0, int arg1, int arg2)
{
if (arg0 == null) {
return;
}
PoiOverlay poioverlay = new PoiOverlay(BaiduMapActivity.this, mapView);
poioverlay.setData(arg0.getAllPoi());
mapView.getOverlays().add(poioverlay);
}
public void onGetTransitRouteResult(MKTransitRouteResult arg0, int arg1)
{}
public void onGetWalkingRouteResult(MKWalkingRouteResult arg0, int arg1)
{}
}
@Override
protected boolean isRouteDisplayed()
{
return false;
}
@Override
protected void onDestroy()
{
if (mapManager != null)
{
mapManager.destroy();
mapManager = null;
}
super.onDestroy();
}
@Override
protected void onPause()
{
if (mapManager != null)
{
mapManager.stop();
}
super.onPause();
}
@Override
protected void onResume()
{
if (mapManager != null)
{
mapManager.start();
}
super.onResume();
}
}