Enable Location Service in .NET MAUI after upgrading from Xamarin Forms

Question

I am currently upgrading my Xamarin Forms application to .NET MAUI. In my Xamarin Forms app, I used DependencyService to enable a location pop-up asking the user for location service permission. I'm struggling to find a way to achieve the same result in .NET MAUI. Can anyone help me out? Note that this is for production.

Here is the code I used in my Xamarin Forms app:

//MainPage.cs
DependencyService.Get<ILocationSettings>().EnableLocation();

//Separate .cs at main Program
public interface ILocationSettings 
{
     void EnableLocation();
}

//And at MainProgram.Android I have 
[assembly: Dependency(typeof(LocationSettings))]
namespace MainProgram.Droid  
{
    class LocationSettings : ILocationSettings
    {  
        public async void EnableLocation()
        {
            try
            {
                Android.Gms.Location.LocationRequest locationRequest = Android.Gms.Location.LocationRequest.Create();
                locationRequest.SetPriority(Android.Gms.Location.LocationRequest.PriorityHighAccuracy);
                LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder().AddLocationRequest(locationRequest);
                var response = await LocationServices.GetSettingsClient(Platform.CurrentActivity).CheckLocationSettingsAsync(builder.Build());
            }
            catch (ApiException exception)
            {
                switch (exception.StatusCode)
                {
                    case LocationSettingsStatusCodes.ResolutionRequired:
                        ResolvableApiException resolvable = (ResolvableApiException)exception;
                        resolvable.StartResolutionForResult(Platform.CurrentActivity, 0x1);
                        break;
                    default:
                        break;
                }
            }
        }
    }
}

Answer 1

Hello,

Before you start to use Api to access the Google location services, please install following nuget packages in your application.

Xamarin.AndroidX.Fragment.Ktx

Xamarin.GooglePlayServices.Location

Then, Android.Gms.Location.LocationRequest.Create is deprecated. Please use Android.Gms.Location.LocationRequest.Builder to do it.

For MAUI, you do not need to use Dependence service to invoke specific platform code. Please use Conditional compilation

You can refer to the following code.

private async void OnCounterClicked(object sender, EventArgs e)
        {
#if ANDROID
            try
            {
               
                var locationRequest =new Android.Gms.Location.LocationRequest.Builder(Priority.PriorityHighAccuracy,100);
                LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder().AddLocationRequest(locationRequest.Build());
                var response = await LocationServices.GetSettingsClient(Platform.CurrentActivity).CheckLocationSettingsAsync(builder.Build());
            }
            catch (ApiException exception)
            {
                switch (exception.StatusCode)
                {
                    case LocationSettingsStatusCodes.ResolutionRequired:
                        ResolvableApiException resolvable = (ResolvableApiException)exception;
                        resolvable.StartResolutionForResult(Platform.CurrentActivity, 0x1);
                        break;
                    default:
                        break;
                }
            }


#endif
        }

As note: please do not forget to add used Namespace in Conditional compilation.

#if ANDROID
using Android.Gms.Common.Apis;
using Android.Gms.Location;
#endif

Best Regards,

Leon Lu

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