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Showing content from https://developers.arcgis.com/swift/scenes-3d/tutorials/display-a-web-scene/ below:

Display a web scene | ArcGIS Maps SDK for Swift

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.

To learn how to create your own web scene, complete the Create a web scene tutorial.

Before starting this tutorial:

1. You need an ArcGIS Location Platform or ArcGIS Online account.

2. Your system meets the system requirements.

You have two options for completing this tutorial:

1. Option 1: Develop the code or
2. Option 2: Download the completed solution

To start the tutorial, complete the Display a scene tutorial. This creates a scene to display an area of the Santa Monica Mountains in a scene view.

1. Open the .xcodeproj project you created by completing the Display a scene tutorial.
2. Continue with the following instructions to display a scene from a web scene stored in ArcGIS.

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.

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

Press Command + R to run the app.

If you are using the Xcode simulator your system must meet these minimum requirements: macOS 14 (Sonoma), Xcode 16, iOS 18. 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.

Note that the simulator does not provide the best performance for interacting with the 3D scene. For a better experience, run the app on a physical device.

Alternatively, you can download the tutorial solution, as follows.

1. Click the Download solution link under Solution and unzip the file to a location on your machine.

2. Open the .xcodeproj file in Xcode.

Since the downloaded solution does not contain authentication credentials, you must first set up authentication to create credentials, and then add the developer credentials to the solution.

To access the secure ArcGIS location services used in this tutorial, you must implement API key authentication or user authentication using an ArcGIS Location Platform or an ArcGIS Online account.

You can implement API key authentication or user authentication in this tutorial. Compare the differences below:

API key authentication

• Users are not required to sign in.
• Requires creating an API key credential with the correct privileges.
• API keys are long-lived access tokens.
• Service usage is billed to the API key owner/developer.
• Simplest authentication method to implement.
• Recommended approach for new ArcGIS developers.

Learn more in API key authentication.

User authentication

• Users are required to sign in with an ArcGIS account.
• User accounts must have privilege to access the ArcGIS services used in application.
• Requires creating OAuth credentials.
• Application uses a redirect URL and client ID.
• Service usage is billed to the organization of the user signed into the application.

Learn more in User authentication.

To learn more about the different types of authentication, visit Types of authentication.

Create a new API key access token with privileges to access the secure resources used in this tutorial.

1. Complete the Create an API key tutorial and create an API key with the following privilege(s):

   • Privileges
     • Location services > Basemaps

2. Copy and paste the API key access token into a safe location. It will be used in a later step.

Create new OAuth credentials to access the secure resources used in this tutorial.

1. Complete the Create OAuth credentials for user authentication tutorial to obtain a Client ID and Redirect URL.

   A Client ID uniquely identifies your app on the authenticating server. If the server cannot find an app with the provided Client ID, it will not proceed with authentication.

   The Redirect URL (also referred to as a callback url) is used to identify a response from the authenticating server when the system returns control back to your app after an OAuth login. Since it does not necessarily represent a valid endpoint that a user could navigate to, the redirect URL can use a custom scheme, such as my-app://auth. It is important to make sure the redirect URL used in your app's code matches a redirect URL configured on the authenticating server.

2. Copy and paste the Client ID and Redirect URL into a safe location. They will be used in a later step.

All users that access this application need account privileges to access the ArcGIS Basemap Styles service.

To allow your app users to access ArcGIS location services, use the developer credentials that you created in the Set up authentication step to authenticate requests for resources.

Pass your API Key access token to the ArcGISEnvironment.

1. In the Project Navigator, click MainApp.swift.

2. Set the AuthenticationMode to .apiKey.

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       // Change the `AuthenticationMode` to `.apiKey` if your application uses API key authentication.
   
       private var authenticationMode: AuthenticationMode { .apiKey }
   
   

3. Set the apiKey property with your API key access token.

   MainApp.swift

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       // Please enter an API key access token if your application uses API key authentication.
   
       private let apiKey = APIKey("<#YOUR-ACCESS-TOKEN#>")
   
   

Best Practice: The access token is stored directly in the code as a convenience for this tutorial. Do not store credentials directly in source code in a production environment.

Use the Authenticator toolkit component to manage your OAuth credentials and pass it to the ArcGISEnvironment.

1. In the Project Navigator, click MainApp.swift.

2. Set the AuthenticationMode to .user.

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   // Change the `AuthenticationMode` to `.user` if your application uses OAuth credentials.
   
   private var authenticationMode: AuthenticationMode { .user }

3. Set your portalURL, clientID and redirectURL values.

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       // Setup an `Authenticator` with OAuth configuration if your application uses OAuth credentials.
       @ObservedObject var authenticator = Authenticator(
           oAuthUserConfigurations: [
               OAuthUserConfiguration(
   
                   // Please enter OAuth credentials for user authentication.
   
                   portalURL: URL(string: "<#YOUR-PORTAL-URL#>")!,
                   clientID: "<#YOUR-CLIENT-ID#>",
                   redirectURL: URL(string: "<#YOUR-REDIRECT-URL#>")!
   
               )
           ]
       )
   

Best Practice: The OAuth credentials are stored directly in the code as a convenience for this tutorial. Do not store credentials directly in source code in a production environment.

Press Command + R to run the app.

If you are using the Xcode simulator your system must meet these minimum requirements: macOS 14 (Sonoma), Xcode 16, iOS 18. 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.

Note that the simulator does not provide the best performance for interacting with the 3D scene. For a better experience, run the app on a physical device.

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

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