borepin/Borepin/Borepin.Android/MainActivity.cs

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

namespace Borepin.Droid
{
    [Activity(Theme = "@style/MainTheme", ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
    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);

            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
            LoadApplication(new App(new PlatformInitializer()));
        }
    }
}