intro.dart

import 'package:flutter/material.dart';

const md_01 = """
### ***GridView***

> GridView可创建一个二维的网格布局
```

 GridView({
  Key key,
  Axis scrollDirection: Axis.vertical,
  bool reverse: false,
  ScrollController controller,
  bool primary,
  ScrollPhysics physics,
  bool shrinkWrap: false,
  EdgeInsetsGeometry padding,
  @required SliverGridDelegate gridDelegate,
  bool addAutomaticKeepAlives: true,
  bool addRepaintBoundaries: true,
  bool addSemanticIndexes: true,
  double cacheExtent,
  List<Widget> children: const [],
  int semanticChildCount
})
```

""";