Loading NetworkImage in flutter

Image.network(
  image,
  fit: BoxFit.cover,
  loadingBuilder: (context, child, loadingProgress) {
    return (loadingProgress == null)
        ? child
        : Center(
            child: SizedBox(
              height: 40.0,
              width: 40.0,
              child: CircularProgressIndicator(),
            ),
          );
  },
),