MvvmCross-卡在启动屏幕中

我正在用MvvmCross和Xamarin.Forms开发一个小应用程序。 我根据MvvmCross网站上的教程构建了这个项目;问题是,当我尝试添加一个启动屏幕(在android项目上)以在主viewmodel加载时出现时,它会被卡住。。。

    [Activity(
    Label = "@string/app_name",
    Theme = "@style/AppTheme",
    MainLauncher = false,
    LaunchMode = LaunchMode.SingleTask,
    ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
public class Start : MvxFormsAppCompatActivity<Setup, App, FormsApp>
{
    //LaunchMode = LaunchMode.SingleTask
    //MvxFormsAppCompatActivity<MvxFormsAndroidSetup<App, FormsApp>, App, FormsApp>
    protected override void OnCreate(Bundle bundle)
    {
        TabLayoutResource = Resource.Layout.Tabbar;
        ToolbarResource = Resource.Layout.Toolbar;
        base.OnCreate(bundle);

    }
}

设置:

    public class Setup : MvxFormsAndroidSetup<App, FormsApp>
{
}

飞溅屏幕:

    [Activity(
    Label = "Template", 
    MainLauncher = true, 
    NoHistory = true,
    Theme = "@style/AppTheme",
    Icon = "@drawable/icon")]
public class SplashScreen : MvxSplashScreenActivity
{
    public SplashScreen()
        :base(Resource.Layout.SplashScreen)
    {
    }
    protected override void RunAppStart(Bundle bundle)
    {
        StartActivity(typeof(Start));
        base.RunAppStart(bundle);
    }
}