5. GridView

/// 网格布局
class MyGridView extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return GridView(
      padding: const EdgeInsets.fromLTRB(12.0,20.0,12.0,20.0),
      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
        crossAxisCount: 2, // 横轴的列数
        mainAxisSpacing: 12.0, // 主轴间距
        crossAxisSpacing: 12.0, // 横轴间距
        childAspectRatio: 0.7 // item的宽高比
      ),
      children: [
        Image.network("http://img5.mtime.cn/mt/2018/10/22/104316.77318635_180X260X4.jpg",fit: BoxFit.fill),
        Image.network("http://img5.mtime.cn/mt/2018/10/22/104316.77318635_180X260X4.jpg",fit: BoxFit.fill),
        Image.network("http://img5.mtime.cn/mt/2018/10/22/104316.77318635_180X260X4.jpg",fit: BoxFit.fill),
        Image.network("http://img5.mtime.cn/mt/2018/10/22/104316.77318635_180X260X4.jpg",fit: BoxFit.fill),
        Image.network("http://img5.mtime.cn/mt/2018/10/22/104316.77318635_180X260X4.jpg",fit: BoxFit.fill),
        Image.network("http://img5.mtime.cn/mt/2018/10/22/104316.77318635_180X260X4.jpg",fit: BoxFit.fill),
        Image.network("http://img5.mtime.cn/mt/2018/10/22/104316.77318635_180X260X4.jpg",fit: BoxFit.fill)
      ],
    );
  }
}