Display device location

Learn how to display the current device location on a map or scene.

display device location

You can display the device location on a map or scene. This is important for workflows that require the user's current location, such as finding nearby businesses, navigating from the current location, or identifying and collecting geospatial information.

By default, location display uses the device's location provider. Your app can also process input from other location providers, such as an external GPS receiver or a provider that returns a simulated location. For more information, see the Show device location topic.

Prerequisites

Before starting this tutorial:

Optionally, you may want to install the ArcGIS Maps SDK for .NET to get access to project templates in Visual Studio (Windows only) and offline copies of the NuGet packages.

Develop or download

You have two options for completing this tutorial:

  1. Option 1: Develop the code or
  2. 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 service.

Open a Visual Studio solution

  1. Open the Visual Studio solution you created by completing the Display a map tutorial.
  2. Continue with the following instructions to display the current device location on the map.

Update the tutorial name used in the project (optional)

The Visual Studio solution, project, and the namespace for all classes currently use the name DisplayAMap. Follow the steps below if you prefer the name to reflect the current tutorial. These steps are not required, your code will still work if you keep the original name.

Show the current location

Each map view has its own instance of a LocationDisplay for showing the current location (point) of the device. The location is displayed as an overlay in the map view.

  1. Add code to enable LocationDisplay for the map view and assign a LocationDisplayAutoPanMode that centers the map at the device location.

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            public MainWindow()
            {
                InitializeComponent();
    
                MainMapView.LocationDisplay.IsEnabled = true;
                MainMapView.LocationDisplay.AutoPanMode = Esri.ArcGISRuntime.UI.LocationDisplayAutoPanMode.Recenter;
    
            }
    
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Run the app

Click Debug > Start Debugging (or press <F5> on the keyboard) to run the app. If your app uses user authentication, enter your ArcGIS Online credentials when prompted.

You should see your current location displayed on the map. Different location symbols are used depending on the auto pan mode and whether a location is acquired. See LocationDisplayAutoPanMode for details.

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

Option 2: Download the solution

  1. Click the Download solution link in the right-hand panel of the page.

  2. Unzip the file to a location on your machine.

  3. Open the .sln file in Visual Studio.

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

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.

Set developer credentials in the solution

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.

  1. In Visual Studio, in the Solution Explorer, click App.xaml.cs to open the file.

  2. Set the ArcGISEnvironment.ApiKey property with your API key access token.

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            protected override void OnStartup(StartupEventArgs e)
            {
                base.OnStartup(e);
    
                // Set the access token for ArcGIS Maps SDK for .NET.
                Esri.ArcGISRuntime.ArcGISRuntimeEnvironment.ApiKey = "YOUR_ACCESS_TOKEN";
    
                // Call a function to set up the AuthenticationManager for OAuth.
                UserAuth.ArcGISLoginPrompt.SetChallengeHandler();
    
            }
    
  3. Remove the code that sets up user authentication.

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            protected override void OnStartup(StartupEventArgs e)
            {
                base.OnStartup(e);
    
                // Set the access token for ArcGIS Maps SDK for .NET.
                Esri.ArcGISRuntime.ArcGISRuntimeEnvironment.ApiKey = "YOUR_ACCESS_TOKEN";
    
                // Call a function to set up the AuthenticationManager for OAuth.
                UserAuth.ArcGISLoginPrompt.SetChallengeHandler();
    
            }
    

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.

Run the solution

Click Debug > Start Debugging (or press <F5> on the keyboard) to run the app. If your app uses user authentication, enter your ArcGIS Online credentials when prompted.

You will see your current location displayed on the map.

What's next?

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

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