on
Tells the ad manager that your content player entered / exited fullscreen mode.
The ad player view will always stick to your container view even when you resize or rotate it. However, the ad manager needs to know about your fullscreen status to keep the fullscreen button status up to date when playing ad breaks. This is particularly important if your application responds to orientation changes by entering / exiting fullscreen.
Parameters
is
Whether or not the content player is in fullscreen mode.