Display a web map | ArcGIS Maps SDK for Swift

Learn how to create and display a mapA map is a collection of layers that are displayed in 2D. It is typically composed of a basemap layer and data layers.Learn more from a web mapA web map is a map stored as a JSON object that defines properties such as the basemap layer, data layers, layer styles, and pop-up styles. Its JSON structure is defined by the web map specification.Learn more stored in ArcGISArcGIS is the brand name for all of the desktop, server, and developer products and technologies offered by Esri.Learn more.

A web mapA web map is a map stored as a JSON object that defines properties such as the basemap layer, data layers, layer styles, and pop-up styles. Its JSON structure is defined by the web map specification.Learn more contains the definition of a mapA map is a collection of layers that are displayed in 2D. It is typically composed of a basemap layer and data layers.Learn more, including properties such as the basemapA basemap is the foundational layer and data that provides the overall visual and geographic context for a map or scene. It typically includes geographic features and labels for land, water, roads, buildings, cities, places, and administrative boundaries, but can also include raster data such as satellite and areal images.Learn more, initial extentAn extent is a bounding rectangle with points that delineate an area for a map or scene.Learn more, layersA layer is a reference to a collection of geographic data that is used to access and display data. The data for layers are typically provided by the basemap layer service and data services.Learn more, stylesA style is the visual definition of how geographic data is displayed in a map including colors, backgrounds, outlines, labels, and other visual elements. Each style emphasizes a specific type of cartographic theme and data.Learn more, pop-upsA pop-up is a visual element used to display data for features or graphics in a map.Learn more, and labelsA label is text displayed with and associated with a graphic or feature.Learn more. You can author and save web maps using the Map ViewerMap Viewer is a browser-based mapping tool that can view, create, and save web maps. It can also perform mapping, visualization, and spatial analysis operations.Learn more or ArcGIS ProArcGIS Pro is a professional desktop GIS application that can explore, visualize, analyze, and manage 2D and 3D data.Learn more and share them in ArcGISArcGIS is the brand name for all of the desktop, server, and developer products and technologies offered by Esri.Learn more. Each web map is stored as an item in ArcGIS OnlineArcGIS Online is a GIS mapping, analytics, data hosting, and content management software as a service (SaaS) product. It includes applications, tools, APIs, and location services for users and developers. It is subscription-based and requires an ArcGIS Online account.Learn more or ArcGIS EnterpriseArcGIS Enterprise is a GIS mapping, analytics, data hosting, and content management product that can be hosted on-premise or in a cloud infrastructure. It includes software, applications, tools, APIs, and services for users and developers.Learn more, allowing you to access a web mapA web map is a map stored as a JSON object that defines properties such as the basemap layer, data layers, layer styles, and pop-up styles. Its JSON structure is defined by the web map specification.Learn more from a portalArcGIS portal, also known as a portal, is a website with applications and tools that can be used to create, manage, access, and share geospatial content and data. It supports security and authentication, developer credentials, content and data service management, user and group management, and site administration. A portal can be hosted in Esri's infrastructure or your own infrastructure.Learn more using its item IDAn item ID is a unique identifier representing a single item stored, managed, and accessed in a portal, such as a web map, hosted layer, or file.Learn more and display it in your app.

In this tutorial, you use a web mapA web map is a map stored as a JSON object that defines properties such as the basemap layer, data layers, layer styles, and pop-up styles. Its JSON structure is defined by the web map specification.Learn more's item IDAn item ID is a unique identifier representing a single item stored, managed, and accessed in a portal, such as a web map, hosted layer, or file.Learn more to display a mapA map is a collection of layers that are displayed in 2D. It is typically composed of a basemap layer and data layers.Learn more of trails, trailheads and parks in the Santa Monica Mountains . The web map is hosted in ArcGIS OnlineArcGIS Online is a GIS mapping, analytics, data hosting, and content management software as a service (SaaS) product. It includes applications, tools, APIs, and location services for users and developers. It is subscription-based and requires an ArcGIS Online account.Learn more.

Prerequisites

Before starting this tutorial:

You need an ArcGIS Location Platform or ArcGIS Online account.
Your system meets the system requirements.

Develop or Download

You have two options for completing this tutorial:

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

Option 1: Develop the code

To start the tutorial, complete the Display a map tutorial. This creates a map to display the Santa Monica Mountains in California using the topographic basemap from the ArcGIS Basemap Styles serviceThe ArcGIS Basemap Styles service, also referred to as the Basemap Styles service, is a location service that provides basemap styles and data for the world. It returns styles as Mapbox styles and web maps, and data as vector tiles and/or map tiles. It supports all of the styles in the ArcGIS Basemap style and Open Basemap style family. An ArcGIS Location Platform or ArcGIS Online account is required to use the service.Learn more.

Open an Xcode project

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

Get the web map item ID

You can use ArcGIS toolsTools, also known as developer tools, are ArcGIS software applications such as portal and ArcGIS Pro that developers can use to prepare content and data for custom applications they are building.Learn more to create and view web mapsA web map is a map stored as a JSON object that defines properties such as the basemap layer, data layers, layer styles, and pop-up styles. Its JSON structure is defined by the web map specification.Learn more. Use the Map ViewerMap Viewer is a browser-based mapping tool that can view, create, and save web maps. It can also perform mapping, visualization, and spatial analysis operations.Learn more to identify the web map item IDAn item ID is a unique identifier representing a single item stored, managed, and accessed in a portal, such as a web map, hosted layer, or file.Learn more. This item ID will be used later in the tutorial.

Go to the LA Trails and Parks web map in the Map Viewer in ArcGIS OnlineArcGIS Online is a GIS mapping, analytics, data hosting, and content management software as a service (SaaS) product. It includes applications, tools, APIs, and location services for users and developers. It is subscription-based and requires an ArcGIS Online account.Learn more. This web map displays trails, trailheads and parks in the Santa Monica Mountains.
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 mapA map is a collection of layers that are displayed in 2D. It is typically composed of a basemap layer and data layers.Learn more from a web mapA web map is a map stored as a JSON object that defines properties such as the basemap layer, data layers, layer styles, and pop-up styles. Its JSON structure is defined by the web map specification.Learn more using the web map's item IDAn item ID is a unique identifier representing a single item stored, managed, and accessed in a portal, such as a web map, hosted layer, or file.Learn more. Use the PortalItem class to access the web map and the Map class to create and display a map from it.

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

The variable map is not required to be a computed property for this tutorial. Replace it with a Map initializer. You'll update this in the next step.

ContentView.swift
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Change lineChange lineChange linestruct ContentView: View {

    @State private var map = Map(

    )

    var body: some View {

        MapView(map: map)

    }

}

Initialize the map with a PortalItem for the web mapA web map is a map stored as a JSON object that defines properties such as the basemap layer, data layers, layer styles, and pop-up styles. Its JSON structure is defined by the web map specification.Learn more. To do this, provide a Portal referencing ArcGIS OnlineArcGIS Online is a GIS mapping, analytics, data hosting, and content management software as a service (SaaS) product. It includes applications, tools, APIs, and location services for users and developers. It is subscription-based and requires an ArcGIS Online account.Learn more and the web map's item IDAn item ID is a unique identifier representing a single item stored, managed, and accessed in a portal, such as a web map, hosted layer, or file.Learn more.
ContentView.swift
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```
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    @State private var map = Map(

        item: PortalItem(
            portal: .arcGISOnline(connection: .anonymous),
            id: PortalItem.ID("41281c51f9de45edaf1c8ed44bb10e30")!
        )

    )
```
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The Portal object is created using a convenience function that points to ArcGIS OnlineArcGIS Online is a GIS mapping, analytics, data hosting, and content management software as a service (SaaS) product. It includes applications, tools, APIs, and location services for users and developers. It is subscription-based and requires an ArcGIS Online account.Learn more. This is the equivalent of:
Use dark colors for code blocksCopy
1 Portal(url: URL(string: "https://www.arcgis.com")!, loginRequired: false)

Run the solution

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.

You should see a map of trails, trailheads and parks in the Santa Monica Mountains . Pinch, drag, and double-tap the map view to explore the map.

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

Option 2: Download the solution

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

Set up authentication

To access the secure ArcGIS location servicesArcGIS Location Services, also referred to as Location Services, are services hosted by Esri that provide geospatial functionality for developing mapping applications. They include the ArcGIS Basemap Styles service, ArcGIS Static Basemap Tiles service, ArcGIS Places service, ArcGIS Geocoding service, ArcGIS Routing service, ArcGIS GeoEnrichment service, and ArcGIS Elevation service. An ArcGIS Location Platform or ArcGIS Online account is required to use the services.Learn more used in this tutorial, you must implement API key authenticationAPI key authentication is a type of authentication that uses an API key to authenticate requests to ArcGIS services and secure portal items.Learn more or user authenticationUser authentication is a type of authentication that allows users with an ArcGIS account to sign into an application and allow it to access ArcGIS content, services, and resources on their behalf. The typical authorization protocol used is OAuth2.0.Learn more using an ArcGIS Location PlatformAn ArcGIS Location Platform account, formerly known as an ArcGIS Developer account, is an identity associated with an ArcGIS Location Platform subscription.Learn more or an ArcGIS OnlineAn ArcGIS Online account, also known as an ArcGIS Organization account, is an identity associated with an ArcGIS Online subscription. It can be used to access ArcGIS tools and develop applications with ArcGIS location services for an organization.Learn more account.

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

API key authenticationAPI key authentication is a type of authentication that uses an API key to authenticate requests to ArcGIS services and secure portal items.Learn more

Users are not required to sign in.
Requires creating an API key credentialAPI key credentials are an item that contains the parameters used to create and manage long-lived access tokens for API key authentication. They are a type of developer credential.Learn more with the correct privileges.
API keysAn API key is a long-lived access token created using API key credentials. They are valid for up to one year and are typically embedded directly into client applications.Learn more 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 authenticationUser authentication is a type of authentication that allows users with an ArcGIS account to sign into an application and allow it to access ArcGIS content, services, and resources on their behalf. The typical authorization protocol used is OAuth2.0.Learn more

Users are required to sign in with an ArcGIS accountAn ArcGIS account is an identity with a user type and set of privileges that can access specific ArcGIS products, tools, APIs, services, and resources. The main account types that can be used for development are an ArcGIS Location Platform account, ArcGIS Online account, and ArcGIS Enterprise account. ArcGIS Location Platform and ArcGIS Online accounts are also associated with a subscription.Learn more.
User accounts must have privilegePrivileges are a set of permissions assigned to ArcGIS accounts, developer credentials, and applications that grant access to secure resources and functionality in ArcGIS.Learn more to access the ArcGIS servicesA service, also known as an ArcGIS service, is software that supports an ArcGIS REST API and provides geospatial functionality or data. A service can be hosted by Esri or in ArcGIS Enterprise.Learn more used in application.
Requires creating OAuth credentialsOAuth credentials are an item that contains parameters required to implement user authentication or app authentication, including a client_id, client_secret, and redirect URIs. They are a type of developer credential.Learn more.
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 complete this tutorial, click on the tab in the switcher below for your authentication type of choice, either API key authentication or User authentication.

Create a new API key access tokenAn access token is an authorization string that provides access to secure ArcGIS content, data, and services. Its capabilities are determined by the privileges it supports. It is obtained by implementing API key authentication, User authentication, or App authentication.Learn more with privilegesPrivileges are a set of permissions assigned to ArcGIS accounts, developer credentials, and applications that grant access to secure resources and functionality in ArcGIS.Learn more to access the secure resources used in this tutorial.

Complete the Create an API key tutorial and create an API key with the following privilege(s)Privileges are a set of permissions assigned to ArcGIS accounts, developer credentials, and applications that grant access to secure resources and functionality in ArcGIS.Learn more:
- Privileges
  - Location services > Basemaps
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.

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.
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 privilegesPrivileges are a set of permissions assigned to ArcGIS accounts, developer credentials, and applications that grant access to secure resources and functionality in ArcGIS.Learn more to access the ArcGIS Basemap Styles serviceThe ArcGIS Basemap Styles service, also referred to as the Basemap Styles service, is a location service that provides basemap styles and data for the world. It returns styles as Mapbox styles and web maps, and data as vector tiles and/or map tiles. It supports all of the styles in the ArcGIS Basemap style and Open Basemap style family. An ArcGIS Location Platform or ArcGIS Online account is required to use the service.Learn more.

Set developer credentials in the solution

To allow your app users to access ArcGIS location servicesArcGIS Location Services, also referred to as Location Services, are services hosted by Esri that provide geospatial functionality for developing mapping applications. They include the ArcGIS Basemap Styles service, ArcGIS Static Basemap Tiles service, ArcGIS Places service, ArcGIS Geocoding service, ArcGIS Routing service, ArcGIS GeoEnrichment service, and ArcGIS Elevation service. An ArcGIS Location Platform or ArcGIS Online account is required to use the services.Learn more, 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.

In the Project Navigator, click MainApp.swift.

Set the AuthenticationMode to .apiKey.

MainApp.swift
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    // Change the `AuthenticationMode` to `.apiKey` if your application uses API key authentication.

    private var authenticationMode: AuthenticationMode { .apiKey }

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#>")

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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 credentialsOAuth credentials are an item that contains parameters required to implement user authentication or app authentication, including a client_id, client_secret, and redirect URIs. They are a type of developer credential.Learn more and pass it to the ArcGISEnvironment.

In the Project Navigator, click MainApp.swift.

Set the AuthenticationMode to .user.

MainApp.swift
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// Change the `AuthenticationMode` to `.user` if your application uses OAuth credentials.

private var authenticationMode: AuthenticationMode { .user }

Set your portalURL, clientID and redirectURL values.

MainApp.swift
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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#>")!

            )
        ]
    )
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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.

Run the solution

Press Command + R to run the app.

You should see a map of trails, trailheads and parks in the Santa Monica Mountains . Pinch, drag, and double-tap the map view to explore the map.

What's next?

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