title: Show a activity indicator while View content is loading in Xamarin Forms
body: <p>Is there a way to show an activity indicator while Page content view is rendering or loading?, i ask this because when i've a lot of controls in a page, and i want to navigate to that page, it takes few second to go to the page. So i'd like to kwow if there is a way to navigate the page instant and when the page appear show activity indicator loading the content, and when the content get loaded, show it.</p>