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 the Xcode project

1. To start the tutorial, complete the Display a scene tutorial or download and unzip the solution.

2. Open the .xcodeproj file in Xcode.

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

   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 Xcode, in the Project Navigator, click MainApp.swift.
   3. In the Editor, set the ArcGISEnvironment.apiKey property on the ArcGISEnvironment with your API key.

   
   

   MainApp.swift

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   import SwiftUI
   
   import ArcGIS
   
   @main
   struct MainApp: App {
   
       init() {
           ArcGISEnvironment.apiKey = APIKey("<#your-API-key#>")
       }
   
       var body: some SwiftUI.Scene {
           WindowGroup {
               ContentView()
   
                   .ignoresSafeArea()
   
           }
       }
   
   }

Get the web map 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

Display the web scene

1. In Xcode, in the Project Navigator, click ContentView.swift.

2. In the Editor, modify the scene closure to create a Scene for the web scene. To do this, create a PortalItem providing the web scene's item ID and a Portal referencing ArcGIS Online.

   ContentView.swift

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       @StateObject private var scene: ArcGIS.Scene = {
           let portalID = PortalItem.ID("579f97b2f3b94d4a8e48a5f140a6639b")!
           let portalItem = PortalItem(portal: .arcGISOnline(connection: .anonymous), id: portalID)
           return Scene(item: portalItem)
       }()
   

3. Press <Command+R> to run the app.

   More info

   If you are using the Xcode simulator your system must meet these minimum requirements: macOS Big Sur 11.3, Xcode 13.4, iOS 14.0. If you are using a physical device, then refer to the system requirements.

Your app should display the scene that you viewed earlier in the Scene Viewer. You should see a map of trails, trailheads and parks in the Santa Monica Mountains. Drag, pinch, and rotate on the scene view to explore the scene.

What's Next?

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

• Display a scene

• Display a web map

• Add a feature layer