效果图：

瀑布流.png

在pubspec.yaml文件中引入所需依赖:

#  瀑布流
flutter_staggered_grid_view: ^0.4.1

完整代码：

StaggeredGridView.countBuilder(
        padding: EdgeInsets.all(25.w),
        crossAxisCount: 2, // 每行个数
        scrollDirection: Axis.vertical, // 滚动方向
        itemCount: 8, // 列表总数
        itemBuilder: (BuildContext context, int index) => Container(
          decoration: BoxDecoration(
              color: Colors.white,
              borderRadius: BorderRadius.circular(20.w),
              boxShadow: [
                BoxShadow(
                    color: Color(0xffEEEEEE),
                    offset: Offset(0.0, 0.0), //阴影xy轴偏移量
                    blurRadius: 4, //阴影模糊程度
                    spreadRadius: 1 //阴影扩散程度
                )
              ]
          ),
          child: Column(
            children: [
              index%2 ==0 ? AspectRatio(
                aspectRatio: 1 / 1,
                child: Container(
                  decoration: BoxDecoration(
                      image:  DecorationImage(
                        image: NetworkImage('https://ss1.baidu.com/-4o3dSag_xI4khGko9WTAnF6hhy/baike/pic/item/a71ea8d3fd1f41348b9ebfeb2c1f95cad0c85efd.jpg'),
                        fit: BoxFit.cover,
                      ),
                      borderRadius: BorderRadius.only(
                        topLeft: Radius.circular(20.w),
                        topRight: Radius.circular(20.w),
                      )
                  ),
                ),
              ) : Container(),
              SizedBox(height: 10.w),
              Container(
                padding: EdgeInsets.symmetric(horizontal: 20.w),
                child: Row(
                  children: [
                    Container(
                      width: 45.w,
                      height: 45.w,
                      decoration: BoxDecoration(
                          image:  DecorationImage(
                            image: NetworkImage('https://ss1.baidu.com/-4o3dSag_xI4khGko9WTAnF6hhy/baike/pic/item/a71ea8d3fd1f41348b9ebfeb2c1f95cad0c85efd.jpg'),
                            fit: BoxFit.cover,
                          ),
                          borderRadius: BorderRadius.circular(50.w)
                      ),
                    ),
                    SizedBox(width: 10.w),
                    Text('用户昵称', maxLines: 1,overflow: TextOverflow.ellipsis)
                  ],
                ),
              ),
              SizedBox(height: 10.w),
              Container(
                padding: EdgeInsets.symmetric(horizontal: 20.w),
                child: Text('标题标题标题标题标题标题标题标题标题标题标题标题标题标题',overflow: TextOverflow.ellipsis, maxLines: 2,style: TextStyle(color: Color(0xff333333))),
              ),
              index%2 != 0 ? SizedBox(height: 10.w):SizedBox(),
              index%2 != 0 ? Container(
                padding: EdgeInsets.symmetric(horizontal: 20.w),
                child: Text('    内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容',overflow: TextOverflow.ellipsis, maxLines: 4,style: TextStyle(fontSize: 24.sp,color: Colors.black26),),
              ): Container(),
              SizedBox(height: 15.w),
            ],
          ),
        ),
        staggeredTileBuilder: (int index) => StaggeredTile.fit(1), // 重点
        mainAxisSpacing: 20.w, // 间距
        crossAxisSpacing: 20.w, // 间距
      )