如何在xamarin.android中创建自定义属性动画

public class CustomView : View
{
    private float _customValue;

    public float CustomValue
    {
        get { return _customValue; }
        set
        {
            _customValue = value;
            Invalidate(); // Redraw the view
        }
    }

    public CustomView(Context context) : base(context) { }
    public CustomView(Context context, IAttributeSet attrs) : base(context, attrs) { }
}

var animator = ValueAnimator.OfFloat(0f, 1f); // 从0到1的动画
animator.SetDuration(1000); // 动画持续时间1秒
animator.Update += (sender, e) =>
{
    var fraction = (float)e.Animation.AnimatedValue;
    customView.CustomValue = fraction;
};

animator.Start();

public class MainActivity : AppCompatActivity
{
    protected override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);
        var customView = new CustomView(this);
        SetContentView(customView);

        var animator = ValueAnimator.OfFloat(0f, 1f);
        animator.SetDuration(1000);
        animator.Update += (sender, e) =>
        {
            var fraction = (float)e.Animation.AnimatedValue;
            customView.CustomValue = fraction;
        };

        animator.Start();
    }
}