Java ME指路蜂地图开发示例：放大、缩小_J2ME

Java ME引路蜂地图开发示例：放大、缩小

RasterMap的 zoomIn,zoomOut 用来放大缩小地图。

//--------------------------------- PACKAGE ------------------------------------package com.pstreets.gisengine.demo.midp;  //--------------------------------- IMPORTS ------------------------------------import com.mapdigit.gis.geometry.GeoLatLng;import com.mapdigit.gis.raster.MapType;import com.pstreets.gisengine.demo.MapDemoMIDP;import javax.microedition.lcdui.Command;import javax.microedition.lcdui.CommandListener;import javax.microedition.lcdui.Display;import javax.microedition.lcdui.Displayable;  //[------------------------------ MAIN CLASS ----------------------------------]/** *  map zoom demo for Guidebee Map API on MIDP platform. */public class MapZoomMIDP extends MapDemoMIDP implements CommandListener{      private Command mapZoomInCommand=new Command("Zoom In",Command.OK,1);    private Command mapZoomOutCommand=new Command("Zoom Out",Command.CANCEL,1);      public void startApp() {        init();        canvas.addCommand(mapZoomInCommand);        canvas.addCommand(mapZoomOutCommand);        canvas.setCommandListener(this);        GeoLatLng center = new GeoLatLng(32.0616667, 118.7777778);        map.setCenter(center, 13, MapType.MICROSOFTCHINA);        Display.getDisplay(this).setCurrent(canvas);    }       public void commandAction(Command c, Displayable d) {        if(c==mapZoomInCommand){            map.zoomIn();          }else if(c==mapZoomOutCommand){            map.zoomOut();        }    }}