The new concept Xamarin.Forms which further claims to simplify the user interface development where there is no longer necessary to create user interface per device is very attractive. However it is important to notice that in the Android this would run as single activity (on Android).
Are there any design/performance issues with Xamarin.Forms as it is running in one single activity?
I noticed design discussion on SO android-what-is-better-multiple-activities-or-switching-views-manually where using one single activity is not recommended.
Is it still the case in Xamarin.Forms point of view? Are there any memory management or any performance improvements included in the Xamarin.Forms implementation?