Question

我从arcgis下载了一个名为RoutingSample的项目，然后我尝试在我的日食中使用它。它在我的平板电脑上运行没有错误，但当它到达命令＆＃34; RouteTask.solve（rp）;＆＃34;它会引发异常，因此无法计算路线：

＆＃39; com.esri.core.io.EsriServiceException：无法完成操作。

位置＆＃34;位置1＆＃34; in＆＃34; Stops＆＃34;是不定位的。位置＆＃34;位置2＆＃34; in＆＃34; Stops＆＃34;是>未定位的。   至少需要2个有效站点   ＆＃34;停止＆＃34;不包含任何路线的有效输入。＆＃39;

任何想法？

这是我的位置：

public void onLocationChanged(Location loc) {
        if (loc == null)
            return;
        boolean zoomToMe = (mLocation == null) ? true : false;
        mLocation = new Point(loc.getLongitude(), loc.getLatitude());
        if (zoomToMe) {
        //  Point mapPoint = (Point) GeometryEngine.project(mLocation, SpatialReference.create(4326), map.getSpatialReference());
            Point p = (Point) GeometryEngine.project(mLocation, egs, wm);
            map.zoomToResolution(p, 20.0);
        }
    }

这是我计算路线的长pess监听器：

            // Clear the graphics and empty the directions list
            routeLayer.removeAll();
            hiddenSegmentsLayer.removeAll();
            curDirections = new ArrayList<String>();
            mResults = null;

            // retrieve the user clicked location
            final Point loc = map.toMapPoint(x, y);

            // Show that the route is calculating
            dialog = ProgressDialog.show(RoutingSample.this, "",
                    "Calculating route...", true);
            // Spawn the request off in a new thread to keep UI responsive
            Thread t = new Thread() {
                @Override
                public void run() {
                    try {
                        // Start building up routing parameters
                        RouteParameters rp = mRouteTask
                                .retrieveDefaultRouteTaskParameters();
                        NAFeaturesAsFeature rfaf = new NAFeaturesAsFeature();
                        // Convert point to EGS (decimal degrees)
                        Point p = (Point) GeometryEngine.project(loc, wm,
                                egs);

                        // Create the stop points (start at our location, go
                        // to pressed location)

                        StopGraphic point1 = new StopGraphic(mLocation);
                        StopGraphic point2 = new StopGraphic(p);
                        rfaf.setFeatures(new Graphic[] { point1, point2 });
                        rfaf.setCompressedRequest(true);
                        rp.setStops(rfaf);
                        // Set the routing service output SR to our map
                        // service's SR
                        rp.setOutSpatialReference(wm);

                        // Solve the route and use the results to update UI
                        // when received
                        mResults = mRouteTask.solve(rp);
                        mHandler.post(mUpdateResults);
                    } catch (Exception e) {
                        mException = e;
                        mHandler.post(mUpdateResults);
                    }
                }
            };
            // Start the operation
            t.start();
            return true;

Answer 1

我有同样的例外，解决方案是审查服务和应用程序的SpatialReference，在两者中使用相同，如果服务有不同的SpatialReference，那么你将找不到位置。例如，用于GPS 4326。

我希望它有所帮助。

示例：

如果您在

处声明SpatialReference

private SpatialReference wm,egs;
......
wm = SpatialReference.create(102100);
egs = SpatialReference.create(4326);

然后确保您的MapService SpatialReference是：

Spatial Reference: 102100  (4326)

（如果您在路由示例https://developers.arcgis.com/android/sample-code/routing/中使用Esri MapService和NAService服务，则无需担心）

现在您可以转换onLongPressListener

中的屏幕点

Point loc = map.toMapPoint(x, y);
Point p = (Point) GeometryEngine.project(loc, wm, egs);

/*initialize RouteTask*/
RouteTask rt = RouteTask.createOnlineRouteTask("your service url",null);
RouteParameters rp = rt.retrieveDefaultRouteTaskParameters();
NAFeaturesAsFeature rfaf = new NAFeaturesAsFeature();

//mlocation is your latitude and longitude point provided by GPS location in decimal degrees
StopGraphic point1 = new StopGraphic(mlocation);                            
StopGraphic point2 = new StopGraphic(p);
rfaf.setFeatures(new Graphic[]{point1,point2});

rfaf.setCompressedRequest(true);
rp.setStops(rfaf);
rp.setOutSpatialReference(wm);

RouteResult mresults = rt.solve(rp);

它适用于我。

从我的位置路由到arcgis中为android定义的点

1 个答案: