access the Maps' LoadStatus in esri - Java Geographic Information System

Description

access the Maps' LoadStatus in esri
Demo Code

  /*//from   ww  w .  j  a  va  2  s  .c o m
   * Copyright 2015 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.sampleviewer.samples.map;

  import javafx.application.Application;
  import javafx.application.Platform;
  import javafx.geometry.Insets;
  import javafx.geometry.Pos;
  import javafx.scene.Scene;
  import javafx.scene.control.Button;
  import javafx.scene.control.Label;
  import javafx.scene.control.TextArea;
  import javafx.scene.layout.StackPane;
  import javafx.scene.layout.VBox;
  import javafx.stage.Stage;

  import com.esri.arcgisruntime.geometry.SpatialReference;
  import com.esri.arcgisruntime.loadable.LoadStatus;
  import com.esri.arcgisruntime.mapping.Basemap;
  import com.esri.arcgisruntime.mapping.Map;
  import com.esri.arcgisruntime.mapping.view.MapView;

  /**
   * This sample demonstrates how to access the Maps' LoadStatus.
   * <p>
   * The {@link LoadStatus} will be considered loaded when the following are true:
   * <li>The {@link Map} has a valid {@link SpatialReference}
   * <li>The Map has an been set to the {@link MapView}</li>
   * <h4>How it Works</h4>
   * 
   * Once a Map has a {@link SpatialReference} and is set to the {@link MapView}
   * it will begin loading. By using the {@link Map#addLoadStatusChangedListener}
   * method we can listen for whenever the Map's LoadStatus changes.
   * <p>
   * Different types of LoadStatus:
   * <li>LOADING
   * <li>FAILED_TO_LOAD
   * <li>NOT_LOADED
   * <li>LOADED</li>
   * 
   */
  public class AccessLoadStatus extends Application {

      private MapView mapView;
      private Map map;

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

  // create stack pane and application scene
  StackPane stackPane = new StackPane();
  Scene scene = new Scene(stackPane);
  scene.getStylesheets().add(getClass()
      .getResource("../resources/SamplesTheme.css").toExternalForm());

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

  // create a control panel
  VBox vBoxControl = new VBox(6);
  vBoxControl.setMaxSize(250, 290);
  vBoxControl.getStyleClass().add("panel-region");

  // create sample description
  Label descriptionLabel = new Label("Sample Description:");
  descriptionLabel.getStyleClass().add("panel-label");
  TextArea description = new TextArea(
      "This sample shows how to access the Map's load status. Click the"
          + " reload button to begin.");
  description.setWrapText(true);
  description.autosize();
  description.setEditable(false);

  // create area to display load status text
  Label loadStatusLabel = new Label("Load Status");
  loadStatusLabel.getStyleClass().add("panel-label");
  TextArea loadStatusText = new TextArea();
  loadStatusText.setMaxHeight(200);
  description.setWrapText(true);
  description.autosize();
  description.setEditable(false);

  Button reloadMapButton = new Button("Reload Map");
  reloadMapButton.setMaxWidth(Double.MAX_VALUE);

  // reload map when button clicked
  reloadMapButton.setOnAction(event -> {
    loadStatusText.clear();

    // reload the same map
    map = new Map(Basemap.createImagery());

    map.addLoadStatusChangedListener(e -> {
      String loadingStatus;

      // check the loading status
      switch (e.getNewLoadStatus()) {
        case LOADING:
          loadingStatus = "Load Status: LOADING!";
          break;
        case FAILED_TO_LOAD:
          loadingStatus = "Load Status: FAILED TO LOAD!";
          break;
        case NOT_LOADED:
          loadingStatus = "Load Status: NOT LOADED!";
          break;
        case LOADED:
          loadingStatus = "Load Status: LOADED!";
          break;
        default:
          loadingStatus = "Load Status: ERROR!";
      }

      // update the load status text to the loading status that was fired
      Platform.runLater(() -> loadStatusText.appendText(loadingStatus + "\n"));
    });

    mapView.setMap(map);
  });

  // add labels, sample description, and button to the control panel
  vBoxControl.getChildren().addAll(descriptionLabel, description,
      loadStatusLabel, loadStatusText, reloadMapButton);

  try {
    // create map with the imagery basemap
    map = new Map(Basemap.createImagery());

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

    // add the map view and control panel to stack pane
    stackPane.getChildren().addAll(mapView, vBoxControl);
    StackPane.setAlignment(vBoxControl, Pos.TOP_LEFT);
    StackPane.setMargin(vBoxControl, new Insets(10, 0, 0, 10));

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

      /**
       * Stops and releases all resources used in application.
       *
       * @throws Exception if security manager doesn't allow JVM to exit with
       *           current status
       */
      @Override
      public void stop() throws Exception {

          if (mapView != null) {
              mapView.dispose();
          }
          Platform.exit();
          System.exit(0);
      }

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

          Application.launch(args);
      }

  }
access the Maps' LoadStatus in esri - Java Geographic Information System

Description

Demo Code

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