如何解决底部8.5像素溢出的RenderFlex。在GridView中

ListView.builder(
  scrollDirection: Axis.vertical,
  itemCount: itemCount,
  itemBuilder: (BuildContext context, int index) {
    return YourWidget();
  },
)

CustomScrollView(
  slivers: <Widget>[
    SliverGrid(
      gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
        crossAxisCount: 2,
        crossAxisSpacing: 10.0,
        mainAxisSpacing: 10.0,
      ),
      delegate: SliverChildBuilderDelegate(
        (BuildContext context, int index) {
          return YourWidget();
        },
        childCount: itemCount,
      ),
    ),
  ],
)

Expanded(
  child: GridView.builder(
    gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
      crossAxisCount: 2,
      crossAxisSpacing: 10.0,
      mainAxisSpacing: 10.0,
    ),
    itemCount: itemCount,
    itemBuilder: (BuildContext context, int index) {
      return YourWidget();
    },
  ),
)