Display a web scene

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

This tutorial shows you how to create and display a scene from a web scene. All web scenes are stored in ArcGIS with a unique item ID. You will access an existing web scene by item ID and display its layers. The web scene contains feature layers for the Santa Monica Mountains in California.

Prerequisites

Steps

Open an Android Studio project

1. To start this tutorial, complete the Display a scene tutorial. Or download and unzip the Display a scene solution in a new folder.

2. Modify the old project for use in this new tutorial. Expand More info for instructions.

   More info

   1. On your file system, delete the .idea folder, if present, at the top level of your project.

   2. In the Android tool window, open app > res > values > strings.xml.

      In the <string name="app_name"> element, change the text content to Display a web scene.

      strings.xml

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      <resources>
      
          <string name="app_name">Display a web scene</string>
      
      </resources>

   3. In the Android tool window, open Gradle Scripts > settings.gradle.

      Change the value of rootProject.name to Display a web scene.

      Settings.gradle

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      rootProject.name = "Display a web scene"
      
      include ':app'

   4. Click File > Sync Project with Gradle files. Android Studio will recognize your changes and create a new .idea folder.

3. If you downloaded the Display a scene solution project, get your API key and set it in your app.

   More info

   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 Android Studio: in the Android tool window, open app > java > com.example.app > MainActivity.

   3. In the setApiKey() function, find the ApiKey.create() call and paste your API key inside the quotes, replacing YOUR_API_KEY.

      MainActivity.kt

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          private fun setApiKey(){
              // set your API key
              // 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.
      
              ArcGISEnvironment.apiKey = ApiKey.create("YOUR_API_KEY")
      
          }
      
          // set up your scene here. You will call this method from onCreate()
          private fun setupScene() {
      
              val scene = ArcGISScene(BasemapStyle.ArcGISImagery).apply {
      

Get the web scene item ID

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

1. Go to the LA Trails and Parks web scene in the Scene Viewer in ArcGIS Online. This web scene 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 579f97b2f3b94d4a8e48a5f140a6639b

Add import statements

1. Replace app-specific import statements with the imports needed for this tutorial. Copy the imports highlighted in yellow below into your MainActivity.kt.
   MainActivity.kt

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   package com.example.app
   
   import androidx.appcompat.app.AppCompatActivity
   import android.os.Bundle
   
   import androidx.databinding.DataBindingUtil
   import com.arcgismaps.ApiKey
   import com.arcgismaps.ArcGISEnvironment
   import com.arcgismaps.mapping.ArcGISScene
   import com.arcgismaps.mapping.view.SceneView
   import com.arcgismaps.portal.Portal
   import com.arcgismaps.mapping.PortalItem
   import com.example.app.databinding.ActivityMainBinding
   
   class MainActivity : AppCompatActivity() {
   

Display the web scene

You can display a web scene using the web scene's item ID. Create a scene from the web scene portal item, and display it in your app.

1. In the setupScene() method, delete the code for base surface, surface elevation, camera, and camera viewpoint. The web scene defines these characteristics, so you don't have to set them in your app.

   MainActivity.kt

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       // set up your scene here. You will call this method from onCreate()
       private fun setupScene() {
   
           val scene = ArcGISScene(BasemapStyle.ArcGISImagery).apply {
   
               // add base surface for elevation data
               val elevationSource = ArcGISTiledElevationSource("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer")
               val surface = Surface().apply {
                   elevationSources.add(elevationSource)
                   // add an exaggeration factor to increase the 3D effect of the elevation.
                   elevationExaggeration = 2.5f
               }
   
               baseSurface = surface
   
               // Point(x, y, z, spatialReference)
               val cameraLocation = Point(-118.794, 33.909, 5330.0, SpatialReference.wgs84())
               // Camera(location, heading, pitch, roll)
               val camera = Camera(cameraLocation, 355.0, 72.0, 0.0)
   
               initialViewpoint = Viewpoint(cameraLocation, camera)
   
           }
   
           // set the scene on the scene view
           sceneView.scene = scene
   
       }
   

2. Also delete the code that creates an ArcGISScene by passing a basemap. In this tutorial, you will pass a portal item instead.

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       // set up your scene here. You will call this method from onCreate()
       private fun setupScene() {
   
           val scene = ArcGISScene(BasemapStyle.ArcGISImagery).apply {
   
           }
   
           // set the scene on the scene view
           sceneView.scene = scene
   
       }
   

3. Create a new Portal referencing ArcGIS Online as the url parameter and Anonymous as the connection parameter.

   MainActivity.kt

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       // set up your scene here. You will call this method from onCreate()
       private fun setupScene() {
   
           val portal = Portal("https://www.arcgis.com", Portal.Connection.Anonymous)
   
           // set the scene on the scene view
           sceneView.scene = scene
   
       }
   

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4. Create a PortalItem for the web scene, by passing the portal and the web scene's item ID as parameters.

5. Create an ArcGISScene using the portalitem as the constructor parameter.

   MainActivity.kt

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       // set up your scene here. You will call this method from onCreate()
       private fun setupScene() {
   
           val portal = Portal("https://www.arcgis.com", Portal.Connection.Anonymous)
   
           val itemId = "579f97b2f3b94d4a8e48a5f140a6639b"
           val portalItem = PortalItem(portal, itemId)
   
           val scene = ArcGISScene(portalItem)
   
           // set the scene on the scene view
           sceneView.scene = scene
   
       }
   

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6. Use the existing code to display the new ArcGISScene on the scene view by setting the scene property on the SceneView.

   MainActivity.kt

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       // set up your scene here. You will call this method from onCreate()
       private fun setupScene() {
   
           val portal = Portal("https://www.arcgis.com", Portal.Connection.Anonymous)
   
           val itemId = "579f97b2f3b94d4a8e48a5f140a6639b"
           val portalItem = PortalItem(portal, itemId)
   
           val scene = ArcGISScene(portalItem)
   
           // set the scene on the scene view
           sceneView.scene = scene
   
       }
   

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7. Click Run > Run > app to run the app.

   More info

   In Android Studio, you have two choices for running your app: an actual Android device or the Android Emulator.

   Android device

   Connect your computer to your Android device, using USB or Wi-Fi. For more details, see How to connect your Android device.

   Android Emulator

   Create an AVD (Android Virtual Device) to run in the Android Emulator. For details, see Run apps on the Android Emulator.

   Selecting a device

   When you build and run an app in Android Studio, you must first select a device. From the Android Studio toolbar, you can access the drop-down list of your currently available devices, both virtual and physical.

   .

   If you cannot access the list on the toolbar, click Tools > Device Manager.

Your app should display the scene that you viewed earlier in the Scene Viewer.