Monogame Android - 如何将表面格式更改为游戏视图的 Rgba8888

Monogame Android - how to change surface format to Rgba8888 of game view

我想在 xamarin android 中更改游戏视图的表面格式以获得 Android 布局中单游戏背景的透明影响,但在投射到 AndroidGameView 时出现异常:

这是我的 Activity 代码:

 public class Activity1 : Microsoft.Xna.Framework.AndroidGameActivity
    {
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            this.SetContentView(TestFBX.Resource.Layout.layout1);
            var gameWindowLayout = FindViewById<RelativeLayout>(TestFBX.Resource.Id.gameWindow);

            var game1 = new Game1();
            var game1View = game1.Services.GetService<View>();

            //Exception thrown here:
            game1View.JavaCast<OpenTK.Platform.Android.AndroidGameView>().SurfaceFormat = Android.Graphics.Format.Rgba8888;

            gameWindowLayout.AddView(game1View);
            game1.Run(GameRunBehavior.Asynchronous);                   
        }
    }

例外情况:

System.InvalidCastException: Unable to convert instance of type 'Microsoft.Xna.Framework.MonoGameAndroidGameView' to type 'OpenTK.Platform.Android.AndroidGameView'.

我正在使用 Monogame 3.5。

有什么想法吗?

原来我要参考OpenTK-1.0 dll而不是OpenTK

C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v7.0\OpenTK-1.0.dll