Avalonia/samples/ControlCatalog.Android/MainActivity.cs

using Android.App;
using Android.Content.PM;
using Avalonia;
using Avalonia.Android;

namespace ControlCatalog.Android
{
    [Activity(Label = "ControlCatalog.Android", Theme = "@style/MyTheme.NoActionBar", Icon = "@drawable/icon", LaunchMode = LaunchMode.SingleInstance, ConfigurationChanges = ConfigChanges.Orientation | ConfigChanges.ScreenSize)]
    public class MainActivity : AvaloniaActivity<App>
    {
        protected override AppBuilder CustomizeAppBuilder(AppBuilder builder)
        {
            return base.CustomizeAppBuilder(builder)
                .AfterSetup(_ =>
                {
                    Pages.EmbedSample.Implementation = new EmbedSampleAndroid();
                });
        }
    }
}