public static CardViewFragment NewInstance()
        {
            CardViewFragment fragment = new CardViewFragment();

            fragment.RetainInstance = true;
            return(fragment);
        }
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Set our view from the "main" layout resource
            SetContentView(Resource.Layout.activity_card_view);
            if (bundle == null)
            {
                FragmentManager.BeginTransaction()
                .Add(Resource.Id.container, CardViewFragment.NewInstance())
                .Commit();
            }
        }
		public static CardViewFragment NewInstance()
		{
			CardViewFragment fragment = new CardViewFragment ();
			fragment.RetainInstance = true;
			return fragment;
		}