Implement user authentication

1. Go to the Create OAuth credentials for user authentication tutorial to obtain a ClientID and RedirectURL to use in step 3.

2. Add the ArcGIS Toolkit package to this swift project by following these instructions.

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

   • In the Editor, declare and initialize an Authenticator toolkit member in the MainApp struct.
   • Create an initializer in the MainApp struct.
   • Create a new instance of the Authenticator using an OAuthUserConfiguration that contains your OAuth credentials from step 1.
   • Ensure the ArcGISEnvironment.authenticationManager uses the authenticatior to handle any ArcGIS challenges.
   MainApp.swift.

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   @main
   struct MainApp: App {
   
       @ObservedObject var authenticator: Authenticator
   
       init() {
   
           authenticator = Authenticator(oAuthUserConfigurations: [
               OAuthUserConfiguration(
   
                   portalURL: URL(string: "<#YOUR-PORTAL-URL#>")!,
                   clientID: "#<YOUR-CLIENT-ID>#",
                   redirectURL: URL(string: "<#YOUR-REDIRECT-URL#>")!
   
               )
           ])
           ArcGISEnvironment.authenticationManager.handleChallenges(using: authenticator)
   
       }
   

For more information, see the User authentication.

Best Practice: The OAuth credentials are stored directly in the code as a convenience for this tutorial. In a production environment we do not recommend that you store it directly in source code.