Map Spatial Reference

Demonstrates how you can set the spatial reference on a ArcGISMap and all the operational layers will project accordingly.

How it works

To set a SpatialReference and project that to all operational layers of ArcGISMap:

  1. Create an ArcGIS map passing in a spatial reference,ArcGISMap(SpatialReference.create(54024)).
  2. Create an ArcGISMapImageLayer as a Basemap.
  3. Set basemap to ArcGIS map.
  4. Set ArcGIS map to the MapView.
    • the ArcGIS map image layer will now use the spatial reference set to the map and not it's default spatial reference

Code

/*
 * Copyright 2017 Esri.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package com.esri.samples.map.map_spatial_reference;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

import com.esri.arcgisruntime.geometry.SpatialReference;
import com.esri.arcgisruntime.layers.ArcGISMapImageLayer;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.view.MapView;

public class MapSpatialReferenceSample extends Application {

  private MapView mapView;

  private static final String IMAGE_LAYER_URL =
      "http://sampleserver6.arcgisonline.com/arcgis/rest/services/SampleWorldCities/MapServer";

  @Override
  public void start(Stage stage) throws Exception {

    try {
      // create stack pane and application scene
      StackPane stackPane = new StackPane();
      Scene scene = new Scene(stackPane);

      // set title, size, and add scene to stage
      stage.setTitle("Map Spatial Reference Sample");
      stage.setWidth(800);
      stage.setHeight(700);
      stage.setScene(scene);
      stage.show();

      // create a ArcGISMap with a spatial reference
      final ArcGISMap map = new ArcGISMap(SpatialReference.create(54024));

      // create a ArcGISMap image layer from url
      final ArcGISMapImageLayer mapImageLayer = new ArcGISMapImageLayer(IMAGE_LAYER_URL);

      // create basemap from the ArcGISMap image layer
      Basemap basemap = new Basemap(mapImageLayer);

      // add the basemap to the ArcGISMap
      map.setBasemap(basemap);

      // create a view and set ArcGISMap to it
      mapView = new MapView();
      mapView.setMap(map);

      // add the map view to stack pane
      stackPane.getChildren().add(mapView);

    } catch (Exception e) {
      // on any error, display the stack trace.
      e.printStackTrace();
    }
  }

  /**
   * Stops and releases all resources used in application.
   */
  @Override
  public void stop() throws Exception {

    if (mapView != null) {
      mapView.dispose();
    }
  }

  /**
   * Opens and runs application.
   *
   * @param args arguments passed to this application
   */
  public static void main(String[] args) {

    Application.launch(args);
  }

}


In this topic
  1. How it works
  2. Code