Blackberry引路蜂地图开发示例：路径查询
可以通过RasterMap的getDirection()方法来查询路径，和查询地址类似，路径查询的结果也是通过回调函数的方式来通知应用程序的，下面的例子返回南京到北京的路径。返回结果存放在MapDirection中，MapDirection包含了路径的详细信息，包括路径的每个步骤，长度，时间，方向等
[java]
//--------------------------------- PACKAGE ------------------------------------
package com.pstreets.gisengine.demo.rim;
//--------------------------------- IMPORTS ------------------------------------
import com.mapdigit.gis.MapDirection;
import com.mapdigit.gis.geometry.GeoLatLng;
import com.mapdigit.gis.raster.MapType;
import com.mapdigit.gis.service.IRoutingListener;
import com.pstreets.gisengine.demo.MapDemoRIM;
import net.rim.device.api.ui.component.Menu;
import net.rim.device.api.ui.MenuItem;
//[------------------------------ MAIN CLASS ----------------------------------]
/**
* Map routing demo for Guidebee Map API on RIM platform.
* <hr><b>© Copyright 2011 Guidebee, Inc. All Rights Reserved.</b>
* @version 1.00, 10/02/11
* @author Guidebee Pty Ltd.
*/
public class MapRoutingRIM extends MapDemoRIM implements IRoutingListener {
/**
* 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.
MapRoutingRIM theApp = new MapRoutingRIM();
theApp.enterEventDispatcher();
}
private MenuItem mapGetDirectionMenuItem = new MenuItem("Get Direction", 0, 0){
public void run(){
String name1 = "南京";
String name2 = "北京";
map.getDirections("from: " + name1 + " to: " + name2);
}
};
public MapRoutingRIM() {
init();
pushScreen(canvas);
map.setRoutingListener(this);
GeoLatLng center = new GeoLatLng(32.0616667, 118.7777778);
map.setCenter(center, 13, MapType.MICROSOFTCHINA);
}
public void done(String arg0, MapDirection result) {
if (result != null) {
map.setMapDirection(result);
map.resize(result.getBound());
map.setZoom(5);
}
}
protected void createMenu(Menu menu, int instance){
menu.add(mapGetDirectionMenuItem);
}
}
//--------------------------------- PACKAGE ------------------------------------
package com.pstreets.gisengine.demo.rim;
//--------------------------------- IMPORTS ------------------------------------
import com.mapdigit.gis.MapDirection;
import com.mapdigit.gis.geometry.GeoLatLng;
import com.mapdigit.gis.raster.MapType;
import com.mapdigit.gis.service.IRoutingListener;
import com.pstreets.gisengine.demo.MapDemoRIM;
import net.rim.device.api.ui.component.Menu;
import net.rim.device.api.ui.MenuItem;
//[------------------------------ MAIN CLASS ----------------------------------]
/**
* Map routing demo for Guidebee Map API on RIM platform.
* <hr><b>© Copyright 2011 Guidebee, Inc. All Rights Reserved.</b>
* @version 1.00, 10/02/11
* @author Guidebee Pty Ltd.
*/
public class MapRoutingRIM extends MapDemoRIM implements IRoutingListener {
/**
* 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.
MapRoutingRIM theApp = new MapRoutingRIM();
theApp.enterEventDispatcher();
}
private MenuItem mapGetDirectionMenuItem = new MenuItem("Get Direction", 0, 0){
public void run(){
String name1 = "南京";
String name2 = "北京";
map.getDirections("from: " + name1 + " to: " + name2);
}
};
public MapRoutingRIM() {
init();
pushScreen(canvas);
map.setRoutingListener(this);
GeoLatLng center = new GeoLatLng(32.0616667, 118.7777778);
map.setCenter(center, 13, MapType.MICROSOFTCHINA);
}
