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();
}
