/// <summary>
/// Pushes the fragment onto the view stack.
/// </summary>
/// <param name="fragment">The fragment.</param>
public void PushFragment(CrexBaseFragment fragment)
{
var oldFragment = Fragments.LastOrDefault();
var tx = FragmentManager.BeginTransaction();
tx.SetCustomAnimations(global::Android.Resource.Animator.FadeIn, global::Android.Resource.Animator.FadeOut, global::Android.Resource.Animator.FadeIn, global::Android.Resource.Animator.FadeOut);
tx.Add(global::Android.Resource.Id.Content, fragment);
Fragments.Add(fragment);
InFragmentTransition = true;
tx.Commit();
}