地址反编码是通过经纬度查询对应的地名,下面示例是查询经纬度为118.777802, 32.061699对应的地名,结果为”中国江苏省南京市鼓楼区渊声巷41号”。
//--------------------------------- PACKAGE ------------------------------------ package com.pstreets.gisengine.demo.rim; //--------------------------------- IMPORTS ------------------------------------ import com.mapdigit.gis.MapPoint; import com.mapdigit.gis.geometry.GeoLatLng; import com.mapdigit.gis.raster.MapType; import com.mapdigit.gis.service.IReverseGeocodingListener; import com.pstreets.gisengine.demo.MapDemoRIM; import net.rim.device.api.ui.component.Menu; import net.rim.device.api.ui.MenuItem; //[------------------------------ MAIN CLASS ----------------------------------] public class MapReverseGeocodingRIM extends MapDemoRIM implements IReverseGeocodingListener { /** * Entry point for application * @param args Command line arguments (not used) */ public static void main(String[] args) { // Create a new instance of the application and make the currently // running thread the application's event dispatch thread. MapReverseGeocodingRIM theApp = new MapReverseGeocodingRIM(); theApp.enterEventDispatcher(); } private MenuItem mapFindAddressMenuItem = new MenuItem("Find Address", 0, 0){ public void run(){ map.getReverseLocations("32.061699,118.777802"); } }; public MapReverseGeocodingRIM() { init(); pushScreen(canvas); map.setReverseGeocodingListener(this); GeoLatLng center = new GeoLatLng(32.0616667, 118.7777778); map.setCenter(center, 13, MapType.MICROSOFTCHINA); } public void done(String arg0, MapPoint[] result) { if (result != null) { map.panTo(result[0].getPoint()); } } protected void createMenu(Menu menu, int instance){ menu.add(mapFindAddressMenuItem); } }
注意使用字符串经纬度格式时,纬度在前,经度在后,如果反了,则返回的地名或能为空或都跑到外国去了。结果也是一个数组,一般到第一个结果,后面结果是更大的区域或是距离相对较远的地名。