How to detect orientation change in layout in Flutter?

Question

How to find out Orientation is portrait or landscape in Flutter

if(portrait){
  return ListView.builder()
}else{
  return GridView.count()
}

Answer 1

OrientationBuilder(


 builder: (context, orientation) {
      return orientation == Orientation.portrait
          ? SafeArea(
          child: Scaffold(
              body: PortraitMode(context)
          )
      )
          : LandscapeMode(context);

    }
);