import 'package:flutter\_staggered\_grid\_view/flutter\_staggered\_grid\_view.dart'; //import libray

flutter\_staggered\_grid\_view: ^0.5.0 // package

```
    Flexible(
      child: Container(
        padding: EdgeInsets.only(top: 16.0, right: 16.0, left: 16.0),
        child: StaggeredGridView.countBuilder(
          physics: NeverScrollableScrollPhysics(),
          padding: EdgeInsets.zero,
          crossAxisCount: 4,
          itemCount: products.length,
          itemBuilder: (BuildContext context, int index) => new ClipRRect(
            borderRadius: BorderRadius.all(Radius.circular(5.0)),
            child: InkWell(
              onTap: () => Navigator.of(context).push(MaterialPageRoute(
                  builder: (_) => ProductPage(product: products[index]))),
              child: Container(
                  decoration: BoxDecoration(
                    gradient: RadialGradient(
                        colors: [
                          Colors.grey.withOpacity(0.3),
                          Colors.grey.withOpacity(0.7),
                        ],
                        center: Alignment(0, 0),
                        radius: 0.6,
                        focal: Alignment(0, 0),
                        focalRadius: 0.1),
                  ),
                  child: Hero(
                      tag: products[index].image,
                      child: Image.asset(products[index].image))),
            ),
          ),
          staggeredTileBuilder: (int index) =>
              StaggeredTile.count(2, index.isEven ? 3 : 2),
          mainAxisSpacing: 4.0,
          crossAxisSpacing: 4.0,
        ),
      ),
    ),

```

Error:

lib/screens/main/components/recommended\_list.dart:51:20: Error: The getter 'StaggeredGridView' isn't defined for the class 'RecommendedList'.

* 'RecommendedList' is from 'package:mobi\_zilla/screens/main/components/recommended\_list.dart' ('lib/screens/main/components/recommended\_list.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'StaggeredGridView'.
child: StaggeredGridView.countBuilder(
^^^^^^^^^^^^^^^^^
lib/screens/main/components/recommended\_list.dart:79:19: Error: The getter 'StaggeredTile' isn't defined for the class 'RecommendedList'.
* 'RecommendedList' is from 'package:mobi\_zilla/screens/main/components/recommended\_list.dart' ('lib/screens/main/components/recommended\_list.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'StaggeredTile'.
StaggeredTile.count(2, index.isEven ? 3 : 2),
^^^^^^^^^^^^^