Xamarin PushViewController Zoom to subview - ios

Question

Using Xamarin.iOS to develop an iPhone app.
I would like to achieve the same kind of animation as in the iPhone iOS7 Home Screen, where you zoom in to an app. I have a set of pictures in a Collection view. Each picture corresponds to a person, where you can tap the pic, to get to the next view controller, where you get information about the person .
Right now I am animating from bottom to top - would it be possible to achieve my desired animation type?
public override void ItemSelected (UICollectionView collectionView, NSIndexPath indexPath)
{
UIStoryboard MainStoryboard = UIStoryboard.FromName ("MainStoryboard_iPhone",null);
PersonDetailViewController personDetailViewController = MainStoryboard.InstantiateViewController ("PersonDetailViewController") as PersonDetailViewController;
personDetailViewController.personID = _viewController.Category.Persons [indexPath.Row].Id;
this._viewController.NavigationController.PushViewController (personDetailViewController,false);
var animation = CABasicAnimation.FromKeyPath("transform.translation.y");
animation.Duration = 0.3f;
animation.From = NSNumber.FromFloat(this._viewController.View.Frame.Height);
animation.To = NSNumber.FromFloat(0f);
this._viewController.NavigationController.View.Layer.AddAnimation(animation, "animate");
this._viewController.NavigationController.View.Layer.AnimationForKey("animate");
}

Answer 1

Check out this sample at objc.io of a zooming transition - hopefully you can translate from the Objective-C. Here's the animation part:
- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
UIViewController* toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
UIViewController* fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
[[transitionContext containerView] addSubview:toViewController.view];
toViewController.view.alpha = 0;
[UIView animateWithDuration:[self transitionDuration:transitionContext] animations:^{
fromViewController.view.transform = CGAffineTransformMakeScale(0.1, 0.1);
toViewController.view.alpha = 1;
} completion:^(BOOL finished) {
fromViewController.view.transform = CGAffineTransformIdentity;
[transitionContext completeTransition:![transitionContext transitionWasCancelled]];
}];
}