How do you make a ContentPage fullscreen? - xamarin.forms

Question

In Xamarin.Forms 1.3+, how do you make a ContentPage fullscreen?
The most basic exemple of a ContentPage is the one provided upon creating a Xamarin.Forms Portable project.
public App (){
// The root page of your application
MainPage = new ContentPage {
Content = new StackLayout {
VerticalOptions = LayoutOptions.Center,
Children = {
new Label {
XAlign = TextAlignment.Center,
Text = "Welcome to Xamarin Forms!"
}
}
}
};
}
More info (Android): https://developer.android.com/training/system-ui/immersive.html

Answer 1

Your ContentPage is fullscreen. Only the content in your ContentPage does not fill your entire screen.
You can try something like this:
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,

Answer 2

your content page is fullscreen . You can check by changing the background color of your content page. Try this following code
BackgroundColor = Color.White

Answer 3

Step 1 in making a full screen is by hiding the Navigation Bar. This can be controlled while Navigating to the View.
FullScreenVideoPlayerPage fullScreenVideoPage = new FullScreenVideoPlayerPage();
NavigationPage.SetHasNavigationBar(fullScreenVideoPage, false);
await Navigation.PushAsync(fullScreenVideoPage);
Remember to use async keyword in Method Signature when using await.
private async void FullScreenVideoPlayerPage_Clicked(object sender, EventArgs e)
Step 2 is to hide the Android Status Bar. But seems this is not standard with Android. I was not fully successful in completely hiding this bar. But I could hide the status icons by:
using Android.App;
using Android.Views;
//......
// Call this method from the constructor after InitializeComponent ();
public void HideStatusBar()
{
var activity = (Activity)Forms.Context;
var window = activity.Window;
var attrs = window.Attributes;
attrs.Flags |= Android.Views.WindowManagerFlags.Fullscreen;
window.Attributes = attrs;
window.ClearFlags(WindowManagerFlags.ForceNotFullscreen);
window.AddFlags(WindowManagerFlags.Fullscreen);
var decorView = window.DecorView;
var uiOptions =
(int)Android.Views.SystemUiFlags.LayoutStable |
(int)Android.Views.SystemUiFlags.LayoutHideNavigation |
(int)Android.Views.SystemUiFlags.LayoutFullscreen |
(int)Android.Views.SystemUiFlags.HideNavigation |
(int)Android.Views.SystemUiFlags.Fullscreen |
(int)Android.Views.SystemUiFlags.Immersive;
decorView.SystemUiVisibility = (Android.Views.StatusBarVisibility)uiOptions;
window.DecorView.SystemUiVisibility = StatusBarVisibility.Hidden;
}