flutter GridView.builder

code

class GridViewBuildDemo extends StatelessWidget {
  Widget _gridItemBuilder(BuildContext context, int index) {
    return Container(
      child: Image.network(
        posts[index].imageUrl ?? '',
        fit: BoxFit.cover,
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return GridView.builder(
      padding: EdgeInsets.all(8.0),
      itemCount: posts.length,
      itemBuilder: _gridItemBuilder,
      gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
        crossAxisCount: 4,
        crossAxisSpacing: 8.0,
        mainAxisSpacing: 8.0,
      ),
    );
  }
}