late ScreenCaptureUtils screenCaptureUtils;
  
  ...   
    
  screenCaptureUtils = ScreenCaptureUtils(
      // Path returns empty on iOS
      onScreenCaptured: (_) {
          print('Captured: $_');
      },
    
      /// Only on Android !!!
      isGuarding: (bool val) {
        print(val);
      },
    
      /// Only on Android !!!
      onScreenCapturedWithDeniedPermission: () {
        print('onScreenCapturedWithDeniedPermission');
      },
  )..intialize();

   /// Guard Screen
  screenCaptureUtils.guard();

   /// Unguard Screen
  screenCaptureUtils.unGuard();