didPush method
Called when the current route has been pushed.
Implementation
@override
void didPush() {
  if (mounted) {
    setState(() {
      screenVisible = true;
    });
  }
}
Called when the current route has been pushed.
@override
void didPush() {
  if (mounted) {
    setState(() {
      screenVisible = true;
    });
  }
}