Xamarin / MAUI

using System;

using Android.App;

using Android.Content.PM;

using Android.Runtime;

using Android.OS;

using Xamarin.Forms;

using TestBLE.Services;

namespace TestBLE.Droid

{

    [Activity(Label = "TestBLE", Icon = "@mipmap/icon", Theme = "@style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize )]

    public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity

    {

        protected override void OnCreate(Bundle savedInstanceState)

        {

            base.OnCreate(savedInstanceState);

            Xamarin.Essentials.Platform.Init(this, savedInstanceState);

            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);

            DependencyService.RegisterSingleton<IBluetoothService>(new Services.BluetoothService());

            LoadApplication(new App());

        }

        public override void OnRequestPermissionsResult(int requestCode, string[] permissions, [GeneratedEnum] Android.Content.PM.Permission[] grantResults)

        {

            Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);

            base.OnRequestPermissionsResult(requestCode, permissions, grantResults);

        }

    }

}