I have a MasterDetailPage where I am hiding the ActionBar manually as well as disabling the NavigationBar.
NavigationPage.SetHasNavigationBar (this, false);
Everything works fine, but when I Push a new activity, then come back (using the android back button), the page loads completely, then the ActionBar pops into place. I have not found any override methods to hide it. I also created a custom renderer for this page, but cannot find any overrides that occur at the end of the activity load.
Doing this in OnAppearing does not work as it is too soon. I even tried setting themes to hide the actionbar, etc to no avail, it always comes back! I just plain don't want it in my app at all, ever!