Blackberry引路蜂地图开发示例：地址反编码

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”。

[java] 
//--------------------------------- 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);  
 }  
} 

//--------------------------------- 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。

 作者：mapdigit
 

补充：移动开发 , 其他 ,

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