ArcGIS for Android（10.1.1）只支持在线的网络分析，执行路径分析可以通过RoutingTask类的solve方法来进行，通过给slove方法传递RoutingParameters类型的参数，可以最短路径的查找。而要成功执行路径分析，就必须发布网络分析服务，比较麻烦，下面的代码中使用的服务是arcgisonline.上已经发布的服务。以下代码程序的界面如下：
界面包含两控件：TextView和MapView，在执行路径分析前单击MapView会增加路径分析的停靠点，长按MapView会根据停靠点（至少要两个停靠点）执行查找最短路径的操作，执行成功之后会在TextView中显示相关的路径信息，这时候单击查询的路径，会选中路径片段，相关的信息也会在TextView上显示。单击TextView就会清空所有结果，恢复到原始状态。（代码绝大部分来自API中的Routing这个例子）
public class NATestActivity extends Activity {MapView mMapView ;private TextView tv_label;private SpatialReference mapSR=SpatialReference.create(102100);;private SpatialReference NASR=SpatialReference.create(4326);private GraphicsLayer routeLayer;//查询到的整条路径private GraphicsLayer semLayer;//查询到的路径片段private List<Point> stopPoints;//保存所有的停靠点private Symbol stopSymbol;//停靠点的符号 private SimpleLineSymbol hiderSym;//查询到的路径的片段，设置透明将其“隐藏” private SimpleLineSymbol showSym;//当路径片段被选中的时候，显示的符号 private int selectID=-1;//被选中的路径片段的ID（-1表示没有变选中）/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);mMapView = (MapView) findViewById(R.id.map);tv_label=(TextView) findViewById(R.id.directionsLabel);ArcGISTiledMapServiceLayer atl=new ArcGISTiledMapServiceLayer("");mMapView.addLayer(atl);//mapSR=mMapView.getSpatialReference();routeLayer=new GraphicsLayer();semLayer=new GraphicsLayer();stopPoints=new ArrayList<Point>();mMapView.addLayer(routeLayer);mMapView.addLayer(semLayer);stopSymbol=new SimpleMarkerSymbol(Color.RED, 3, SimpleMarkerSymbol.STYLE.CIRCLE);hiderSym=new SimpleLineSymbol(Color.WHITE, 1);//设置成透明，使其处于“隐藏”状态hiderSym.setAlpha(100);showSym=new SimpleLineSymbol(Color.RED, 4);mMapView.setOnStatusChangedListener(new OnStatusChangedListener() {public void onStatusChanged(Object arg0, STATUS arg1) {if(arg0==mMapView&&arg1==STATUS.INITIALIZED){Point p= new Point( -122.084095,37.422006);mMapView.zoomToResolution((Point) GeometryEngine.project(p, NASR, mapSR), 20.0);Log.i("OK", "KKK");//单击地图添加要经过的位置mMapView.setOnSingleTapListener(new MyOnSintTapLis());//长按开始执行路径分析mMapView.setOnLongPressListener(new MyOnPressLis());//设置tv_label的单击事件为，清楚所以选中的和查询的结果tv_label.setOnClickListener(new OnClickListener() {public void onClick(View v) {semLayer.removeAll();routeLayer.removeAll();selectID=-1;tv_label.setText("");}});}}});}/*** 单击地图事件，先判断是semLayer里面是否为空，，* 如果为空就增加停靠点，如果不为空则进行选择semLayer中的内容操作*/class MyOnSintTapLis implements OnSingleTapListener{public void onSingleTap(float arg0, float arg1) {if(semLayer.getNumberOfGraphics()==0){//增加停靠点Point mapPoint=mMapView.toMapPoint(arg0, arg1);routeLayer.addGraphic(new Graphic(mapPoint, stopSymbol));stopPoints.add((Point)GeometryEngine.project(mapPoint, mapSR, NASR));}else{//选中路径片段int[] ids= semLayer.getGraphicIDs(arg0, arg1, 20);if(ids.length>0){//有路径片段被选中//回复已经被选中的路径片段为透明semLayer.updateGraphic(selectID,hiderSym);//设置新的被选中的路径片段为被选中状态selectID=ids[0];semLayer.updateGraphic(selectID,showSym);//取得被选中的路径片段和其属性Graphic selectGraphic=semLayer.getGraphic(selectID);String text=(String) selectGraphic.getAttributeValue("text");double time=(Double) selectGraphic.getAttributeValue("time");double length=(Double) selectGraphic.getAttributeValue("length");tv_label.setText("长度："+length+"米, 时间："+time+"分钟,描述："+text);//缩放到被选中的片段mMapView.setExtent(selectGraphic.getGeometry(),100);}}}}//长按地图事件class MyOnPressLis implements OnLongPressListener{public void onLongPress(float arg0, float arg1) {if(stopPoints.size()<2){Toast.makeText(getApplicationContext(), "必须至少选择两个停靠点", 0).show();return;}Toast.makeText(getApplicationContext(), "开始查找最短路径", 1).show();new Thread(){//网络分析不能再主线程中进行public void run() {//准备参数RoutingParameters rp=new RoutingParameters();NAFeaturesAsFeature naferture=new NAFeaturesAsFeature();//设置查询停靠点，至少要两个for(Point p :stopPoints){StopGraphic sg=new StopGraphic(p);naferture.addFeature(sg);}rp.setStops(naferture);//设置查询输入的坐标系跟底图一样rp.setOutSpatialReference(mapSR);RoutingTask rt = new RoutingTask("",null);try {//执行操作RoutingResult rr=rt.solve(rp);runOnUiThread(new MyRun(rr));} catch (Exception e) {e.printStackTrace();Looper.prepare();Toast.makeText(getApplicationContext(), e.getMessage(), 1).show();Looper.loop();}}}.start();}}class MyRun implements Runnable{private RoutingResult rr;public MyRun(RoutingResult rr) {this.rr=rr;}public void run() {stopPoints.clear();//得到查询到的路径Route r=rr.getRoutes().get(0);//往tv_label中赋值tv_label.setText("中长度："+r.getTotalLength()+"米, 总时间："+r.getTotalTime()+"分钟,描述："+r.getRouteName());//将这条查询到路径放入routeLayer中Graphic routeGraphic=new Graphic(r.getRoute().getGeometry(),new SimpleLineSymbol(Color.BLUE, 3));routeLayer.addGraphic(routeGraphic);mMapView.setExtent(routeGraphic.getGeometry(),100);List<RoutingDirection> routeDirs=rr.getRoutes().get(0).getRoutingDirections();//取得查询到的路径片段，和其属性，放入到semLayer中，供点击查询每个片断信息Map<String ,Object> atts=new HashMap<String,Object>();for(RoutingDirection routeDir: routeDirs){atts.put("text", routeDir.getText());atts.put("length", routeDir.getLength());atts.put("time", routeDir.getTime());Graphic dirGraphic=new Graphic(routeDir.getGeometry(), hiderSym, atts, null);semLayer.addGraphic(dirGraphic);}}}@Override protected void onDestroy() { super.onDestroy(); }@Overrideprotected void onPause() {super.onPause();mMapView.pause(); }@Override protected void onResume() {super.onResume(); mMapView.unpause();}}结果：别让别人徘徊的脚步踩碎你明天美好的梦想，
