Display a web map

Learn how to create and display a map from a web map stored in ArcGIS.

display a web map

A web map contains the definition of a map. Web maps are created interactively in the Map Viewer or in ArcGIS Pro and are used to share maps in ArcGIS. Applications and APIs can read, write, and display web maps. All web maps are stored in ArcGIS as an item with an item ID.

In this tutorial, you use a web map's item ID to display a map of trails, trailheads and parks in the Santa Monica Mountains. The web map is hosted in ArcGIS Online.

Prerequisites

The following are required for this tutorial:

  1. An ArcGIS account to access your API keys. If you don't have an account, sign up for free.
  2. Confirm that your system meets the minimum system requirements.
  3. An IDE for Java.

Steps

Open a Java project with Gradle

  1. To start this tutorial, complete the Display a map tutorial, or download and unzip the Display a map solution into a new folder.

  2. Open the build.gradle file as a project in IntelliJ IDEA.

  3. If you downloaded the solution project, set your API key.

    An API Key enables access to services, web maps, and web scenes hosted in ArcGIS Online.

    1. Go to your developer dashboard to get your API key. For these tutorials, use your default API key. It is scoped to include all of the services demonstrated in the tutorials.

    2. In the IntelliJ IDEA > Project tool window, open src/main/java/com.example.app and click App.

    3. In the start() method, set the API key property on the ArcGISRuntimeEnvironment with your API key. Replace YOUR_API_KEY with your actual API Key. Be sure to surround your API Key with quotes, because the parameter passed to setApiKey is a string.

      App.java
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      //   Copyright 2020 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.example.app;
      
      import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
      import com.esri.arcgisruntime.mapping.ArcGISMap;
      import com.esri.arcgisruntime.mapping.BasemapStyle;
      import com.esri.arcgisruntime.mapping.Viewpoint;
      import com.esri.arcgisruntime.mapping.view.MapView;
      
      import javafx.application.Application;
      import javafx.scene.Scene;
      import javafx.scene.layout.StackPane;
      import javafx.stage.Stage;
      
      public class App extends Application {
      
        private MapView mapView;
      
        public static void main(String[] args) {
          Application.launch(args);
        }
      
        @Override
        public void start(Stage stage) {
          // set the title and size of the stage and show it
          stage.setTitle("Display a map tutorial");
          stage.setWidth(800);
          stage.setHeight(700);
          stage.show();
      
          // create a JavaFX scene with a stack pane as the root node, and add it to the scene
          StackPane stackPane = new StackPane();
          Scene scene = new Scene(stackPane);
          stage.setScene(scene);
      
          // Note: it is not best practice to store API keys in source code.
          // The API key is referenced here for the convenience of this tutorial.
          String yourApiKey = "YOUR_API_KEY";
          ArcGISRuntimeEnvironment.setApiKey(yourApiKey);
      
          // create a map view to display the map and add it to the stack pane
          mapView = new MapView();
          stackPane.getChildren().add(mapView);
      
          ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_TOPOGRAPHIC);
      
          // set the map on the map view
          mapView.setMap(map);
      
          mapView.setViewpoint(new Viewpoint(34.02700, -118.80543, 144447.638572));
      
        }
      
        /**
         * Stops and releases all resources used in application.
         */
        @Override
        public void stop() {
          if (mapView != null) {
            mapView.dispose();
          }
        }
      
      }
      

Prepare files before coding the app

Modify the files from the Display a map tutorial so that they can be used in this tutorial: you will add imports, change the application title, and remove unnecessary code.

  1. In the IntelliJ IDEA > Project tool window, open src/main/java/com.example.app and click App.

  2. Add the following imports above the existing imports:

    App.java
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    //   Copyright 2020 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.example.app;
    
    import com.esri.arcgisruntime.portal.Portal;
    import com.esri.arcgisruntime.portal.PortalItem;
    
    import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
    import com.esri.arcgisruntime.mapping.ArcGISMap;
    import com.esri.arcgisruntime.mapping.view.MapView;
    
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.layout.StackPane;
    import javafx.stage.Stage;
    
    public class App extends Application {
    
      private MapView mapView;
    
      public static void main(String[] args) {
        Application.launch(args);
      }
    
      @Override
      public void start(Stage stage) {
    
        // set the title and size of the stage and show it
        stage.setTitle("Display a web map tutorial");
    
        stage.setWidth(800);
        stage.setHeight(700);
        stage.show();
    
        // create a JavaFX scene with a stack pane as the root node
        // and add it to the scene
        StackPane stackPane = new StackPane();
        Scene scene = new Scene(stackPane);
        stage.setScene(scene);
    
        // Note: it is not best practice to store API keys in source code.
        // The API key is referenced here for the convenience of this tutorial.
        String yourApiKey = "YOUR_API_KEY";
        ArcGISRuntimeEnvironment.setApiKey(yourApiKey);
    
        // create a map view to display the map and add it to the stack pane
        mapView = new MapView();
        stackPane.getChildren().add(mapView);
    
        Portal portal = new Portal("https://www.arcgis.com", false);
    
        String itemId = "41281c51f9de45edaf1c8ed44bb10e30";
        PortalItem portalItem = new PortalItem(portal, itemId);
        ArcGISMap map = new ArcGISMap(portalItem);
    
        mapView.setMap(map);
    
      }
    
      /**
       * Stops and releases all resources used in application.
       */
      @Override
      public void stop() {
        if (mapView != null) {
          mapView.dispose();
        }
      }
    
    }
    
  3. In the start() lifecycle method, change the title that will appear on the application window to Display a web map tutorial.

    App.java
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    //   Copyright 2020 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.example.app;
    
    import com.esri.arcgisruntime.portal.Portal;
    import com.esri.arcgisruntime.portal.PortalItem;
    
    import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
    import com.esri.arcgisruntime.mapping.ArcGISMap;
    import com.esri.arcgisruntime.mapping.view.MapView;
    
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.layout.StackPane;
    import javafx.stage.Stage;
    
    public class App extends Application {
    
      private MapView mapView;
    
      public static void main(String[] args) {
        Application.launch(args);
      }
    
      @Override
      public void start(Stage stage) {
    
        // set the title and size of the stage and show it
        stage.setTitle("Display a web map tutorial");
    
        stage.setWidth(800);
        stage.setHeight(700);
        stage.show();
    
        // create a JavaFX scene with a stack pane as the root node
        // and add it to the scene
        StackPane stackPane = new StackPane();
        Scene scene = new Scene(stackPane);
        stage.setScene(scene);
    
        // Note: it is not best practice to store API keys in source code.
        // The API key is referenced here for the convenience of this tutorial.
        String yourApiKey = "YOUR_API_KEY";
        ArcGISRuntimeEnvironment.setApiKey(yourApiKey);
    
        // create a map view to display the map and add it to the stack pane
        mapView = new MapView();
        stackPane.getChildren().add(mapView);
    
        Portal portal = new Portal("https://www.arcgis.com", false);
    
        String itemId = "41281c51f9de45edaf1c8ed44bb10e30";
        PortalItem portalItem = new PortalItem(portal, itemId);
        ArcGISMap map = new ArcGISMap(portalItem);
    
        mapView.setMap(map);
    
      }
    
      /**
       * Stops and releases all resources used in application.
       */
      @Override
      public void stop() {
        if (mapView != null) {
          mapView.dispose();
        }
      }
    
    }
    
  4. In start(), delete the code for creating a map from a basemap and setting a viewpoint. The web map defines the characteristics of the map, so you don't have to set them in your app.

    App.java
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    //   Copyright 2020 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.example.app;
    
    import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
    import com.esri.arcgisruntime.mapping.ArcGISMap;
    import com.esri.arcgisruntime.mapping.BasemapStyle;
    import com.esri.arcgisruntime.mapping.Viewpoint;
    import com.esri.arcgisruntime.mapping.view.MapView;
    
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.layout.StackPane;
    import javafx.stage.Stage;
    
    public class App extends Application {
    
      private MapView mapView;
    
      public static void main(String[] args) {
        Application.launch(args);
      }
    
      @Override
      public void start(Stage stage) {
        // set the title and size of the stage and show it
        stage.setTitle("Display a map tutorial");
        stage.setWidth(800);
        stage.setHeight(700);
        stage.show();
    
        // create a JavaFX scene with a stack pane as the root node, and add it to the scene
        StackPane stackPane = new StackPane();
        Scene scene = new Scene(stackPane);
        stage.setScene(scene);
    
        // Note: it is not best practice to store API keys in source code.
        // The API key is referenced here for the convenience of this tutorial.
        String yourApiKey = "YOUR_API_KEY";
        ArcGISRuntimeEnvironment.setApiKey(yourApiKey);
    
        // create a map view to display the map and add it to the stack pane
        mapView = new MapView();
        stackPane.getChildren().add(mapView);
    
        ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_TOPOGRAPHIC);
    
        // set the map on the map view
        mapView.setMap(map);
    
        mapView.setViewpoint(new Viewpoint(34.02700, -118.80543, 144447.638572));
    
      }
    
      /**
       * Stops and releases all resources used in application.
       */
      @Override
      public void stop() {
        if (mapView != null) {
          mapView.dispose();
        }
      }
    
    }
    

Get the web map item ID

You can use ArcGIS tools to create and view web maps. Use the Map Viewer to identify the web map item ID. This item ID will be used later in the tutorial.

  1. Go to the LA Trails and Parks web map in the Map Viewer in ArcGIS Online. This web map displays trails, trailheads and parks in the Santa Monica Mountains.
  2. Make a note of the item ID at the end of the browser's URL.

    The item ID should be 41281c51f9de45edaf1c8ed44bb10e30

Display the web map

You can create a map from a web map using the web map's item ID. Use the PortalItem class to access the web map, and the ArcGISMap class to create and display a map from it.

  1. In the start() method, create a new Portal referencing ArcGIS Online as the portalUrl parameter and false for the loginRequired parameter.

    App.java
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    //   Copyright 2020 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.example.app;
    
    import com.esri.arcgisruntime.portal.Portal;
    import com.esri.arcgisruntime.portal.PortalItem;
    
    import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
    import com.esri.arcgisruntime.mapping.ArcGISMap;
    import com.esri.arcgisruntime.mapping.view.MapView;
    
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.layout.StackPane;
    import javafx.stage.Stage;
    
    public class App extends Application {
    
      private MapView mapView;
    
      public static void main(String[] args) {
        Application.launch(args);
      }
    
      @Override
      public void start(Stage stage) {
    
        // set the title and size of the stage and show it
        stage.setTitle("Display a web map tutorial");
    
        stage.setWidth(800);
        stage.setHeight(700);
        stage.show();
    
        // create a JavaFX scene with a stack pane as the root node
        // and add it to the scene
        StackPane stackPane = new StackPane();
        Scene scene = new Scene(stackPane);
        stage.setScene(scene);
    
        // Note: it is not best practice to store API keys in source code.
        // The API key is referenced here for the convenience of this tutorial.
        String yourApiKey = "YOUR_API_KEY";
        ArcGISRuntimeEnvironment.setApiKey(yourApiKey);
    
        // create a map view to display the map and add it to the stack pane
        mapView = new MapView();
        stackPane.getChildren().add(mapView);
    
        Portal portal = new Portal("https://www.arcgis.com", false);
    
        String itemId = "41281c51f9de45edaf1c8ed44bb10e30";
        PortalItem portalItem = new PortalItem(portal, itemId);
        ArcGISMap map = new ArcGISMap(portalItem);
    
        mapView.setMap(map);
    
      }
    
      /**
       * Stops and releases all resources used in application.
       */
      @Override
      public void stop() {
        if (mapView != null) {
          mapView.dispose();
        }
      }
    
    }
    
  2. Create a PortalItem for the web map, by passing the portal and the web map's item ID as parameters.

  3. Create an ArcGISMap using the portalItem as the constructor parameter.

    App.java
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    //   Copyright 2020 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.example.app;
    
    import com.esri.arcgisruntime.portal.Portal;
    import com.esri.arcgisruntime.portal.PortalItem;
    
    import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
    import com.esri.arcgisruntime.mapping.ArcGISMap;
    import com.esri.arcgisruntime.mapping.view.MapView;
    
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.layout.StackPane;
    import javafx.stage.Stage;
    
    public class App extends Application {
    
      private MapView mapView;
    
      public static void main(String[] args) {
        Application.launch(args);
      }
    
      @Override
      public void start(Stage stage) {
    
        // set the title and size of the stage and show it
        stage.setTitle("Display a web map tutorial");
    
        stage.setWidth(800);
        stage.setHeight(700);
        stage.show();
    
        // create a JavaFX scene with a stack pane as the root node
        // and add it to the scene
        StackPane stackPane = new StackPane();
        Scene scene = new Scene(stackPane);
        stage.setScene(scene);
    
        // Note: it is not best practice to store API keys in source code.
        // The API key is referenced here for the convenience of this tutorial.
        String yourApiKey = "YOUR_API_KEY";
        ArcGISRuntimeEnvironment.setApiKey(yourApiKey);
    
        // create a map view to display the map and add it to the stack pane
        mapView = new MapView();
        stackPane.getChildren().add(mapView);
    
        Portal portal = new Portal("https://www.arcgis.com", false);
    
        String itemId = "41281c51f9de45edaf1c8ed44bb10e30";
        PortalItem portalItem = new PortalItem(portal, itemId);
        ArcGISMap map = new ArcGISMap(portalItem);
    
        mapView.setMap(map);
    
      }
    
      /**
       * Stops and releases all resources used in application.
       */
      @Override
      public void stop() {
        if (mapView != null) {
          mapView.dispose();
        }
      }
    
    }
    
  4. Use the existing code to display the new ArcGISMap on the mapView with setMap().

    App.java
    Use dark colors for code blocks
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    //   Copyright 2020 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.example.app;
    
    import com.esri.arcgisruntime.portal.Portal;
    import com.esri.arcgisruntime.portal.PortalItem;
    
    import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
    import com.esri.arcgisruntime.mapping.ArcGISMap;
    import com.esri.arcgisruntime.mapping.view.MapView;
    
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.layout.StackPane;
    import javafx.stage.Stage;
    
    public class App extends Application {
    
      private MapView mapView;
    
      public static void main(String[] args) {
        Application.launch(args);
      }
    
      @Override
      public void start(Stage stage) {
    
        // set the title and size of the stage and show it
        stage.setTitle("Display a web map tutorial");
    
        stage.setWidth(800);
        stage.setHeight(700);
        stage.show();
    
        // create a JavaFX scene with a stack pane as the root node
        // and add it to the scene
        StackPane stackPane = new StackPane();
        Scene scene = new Scene(stackPane);
        stage.setScene(scene);
    
        // Note: it is not best practice to store API keys in source code.
        // The API key is referenced here for the convenience of this tutorial.
        String yourApiKey = "YOUR_API_KEY";
        ArcGISRuntimeEnvironment.setApiKey(yourApiKey);
    
        // create a map view to display the map and add it to the stack pane
        mapView = new MapView();
        stackPane.getChildren().add(mapView);
    
        Portal portal = new Portal("https://www.arcgis.com", false);
    
        String itemId = "41281c51f9de45edaf1c8ed44bb10e30";
        PortalItem portalItem = new PortalItem(portal, itemId);
        ArcGISMap map = new ArcGISMap(portalItem);
    
        mapView.setMap(map);
    
      }
    
      /**
       * Stops and releases all resources used in application.
       */
      @Override
      public void stop() {
        if (mapView != null) {
          mapView.dispose();
        }
      }
    
    }
    
  5. Run the app.

    Ensure to run the app as a Gradle task and not as an application in your IDE. In the Gradle tool window, under Tasks > application, click run.

You should see a map of trails, trailheads and parks in the Santa Monica Mountains. Click, drag, and scroll the mouse wheel on the map view to explore the map.

What's next?

Learn how to use additional API features, ArcGIS loction services, and ArcGIS tools in these tutorials:

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