borepin/Borepin/Borepin.Android/MainActivity.cs

using Android.App;
using Android.Content;
using Android.Content.PM;
using Android.OS;
using AndroidX.AppCompat.App;

namespace Borepin.Droid
{
    [Activity(Theme = "@style/MainTheme", LaunchMode = LaunchMode.SingleTask, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation, Exported = true)]
    [IntentFilter(
        new[] 
        {
            "android.nfc.action.NDEF_DISCOVERED",
        },
        Categories = new[]
        { 
            Intent.CategoryDefault
        },
        DataScheme = "fabaccess"
        )]
    public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
    {
        protected override void OnCreate(Bundle savedInstanceState)
        {
            AppCompatDelegate.DefaultNightMode = AppCompatDelegate.ModeNightNo;

            TabLayoutResource = Resource.Layout.Tabbar;
            ToolbarResource = Resource.Layout.Toolbar;

            base.OnCreate(savedInstanceState);

            ZXing.Net.Mobile.Forms.Android.Platform.Init();
            Xamarin.Essentials.Platform.Init(this, savedInstanceState);

            Xamarin.Forms.Forms.Init(this, savedInstanceState);
            LoadApplication(new App(new PlatformInitializer()));
        }
        protected override void OnNewIntent(Intent intent)
        {
            if(intent.Action == "android.nfc.action.NDEF_DISCOVERED")
            {
                intent.SetAction(Intent.ActionView);
            }

            base.OnNewIntent(intent);
        }

        public override void OnRequestPermissionsResult(int requestCode, string[] permissions, Permission[] grantResults)
        {
            Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);

            base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
        }
    }
}