Xamarin Map Default Location Issue

Question

I have been working with Xamarin C# and I cannot seem to get the default location to start at the user's location. I can manually add the default location to a specific point and move the map to the user location. However, that is not the objective I am trying to achieve as I want to start with the user, instead of a hard-coded position on the map. Is there a specific way to accomplish this?

Answer 1

Hello,

You could try to query the current device's location coordinates by Xamarin.Essentials: Geolocation, then call the OpenAsync method with this Location by Xamarin.Essentials: Map. Refer to the following code:

CancellationTokenSource cts;  
   protected async override void OnAppearing()  
        {  
            base.OnAppearing();  
  
            try  
            {  
                var request = new GeolocationRequest(GeolocationAccuracy.Medium, TimeSpan.FromSeconds(10));  
                cts = new CancellationTokenSource();  
                var location = await Geolocation.GetLocationAsync(request, cts.Token);//get the location  
  
                if (location != null)  
                {  
                    Console.WriteLine($"Latitude: {location.Latitude}, Longitude: {location.Longitude}, Altitude: {location.Altitude}");  
                    var options = new MapLaunchOptions { Name = "Microsoft Building 25" };  
  
                    await Map.OpenAsync(location, options);//open Map  
                }  
            }  
            catch (FeatureNotSupportedException fnsEx)  
            {  
                // Handle not supported on device exception  
                Console.WriteLine("{0}", fnsEx);  
            }  
            catch (FeatureNotEnabledException fneEx)  
            {  
                Console.WriteLine("{0}", fneEx);  
                // Handle not enabled on device exception  
            }  
            catch (PermissionException pEx)  
  
            {  
                // Handle permission exception  
                Console.WriteLine("{0}", pEx);  
            }  
            catch (Exception ex)  
            {  
                // Unable to get location  
                Console.WriteLine("{0}", ex);  
            }  
  
        }  
protected override void OnDisappearing()  
{  
    if (cts != null && !cts.IsCancellationRequested)  
        cts.Cancel();  
    base.OnDisappearing();  
}  

Before using Geolocation, you need to set the Location permissions on iOS and Android platform, refer to https://learn.microsoft.com/en-us/xamarin/essentials/geolocation?tabs=android#get-started and https://learn.microsoft.com/en-us/xamarin/essentials/geolocation?tabs=ios#get-started

Best Regards,
Wenyan Zhang

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