Apps Can’t Draw On Top Of The System UI In Android O
Apps can’t draw on top of the System UI in Android O thanks to a small change that Google is making to the TYPE_SYSTEM_OVERLAY code in the OS. This has now been changed to TYPE_APPLICATION_OVERLAY according to the Android Developers Blog. This change affects any applications that use a specific permission called SYSTEM_ALERT_WINDOW, which might not be a large selection of apps but there are some which will certainly find it more difficult to operate and may likely have to make some changes to the way their apps work.
Due to this change any apps which use the new “type application overlay” will end up rendering under critical system windows. So things like the stat…