void Animate(LibraryHoloCircularProgressBar.HoloCircularProgressBar progressBar, Android.Animation.Animator.IAnimatorListener listener, float progress, int duration)
        {
            _progressBarAnimator = ObjectAnimator.OfFloat(progressBar, "progress", progress);
            _progressBarAnimator.SetDuration(duration);
            progressBar1 = progressBar;
            progress1    = progress;
            _progressBarAnimator.AddListener(this);
            if (listener != null)
            {
                _progressBarAnimator.AddListener(listener);
            }
            _progressBarAnimator.Reverse();
            _progressBarAnimator.AddUpdateListener(this);

            progressBar.SetMarkerProgress(progress);
            _progressBarAnimator.Start();
        }
 public void ReverseAnimation()
 {
     CreateAnimation();
     animation.Reverse();
 }