阿里的vlayout布局库

主要布局如下：

LinearLayoutHelper: 线性布局
GridLayoutHelper: Grid布局， 支持横向的colspan
FixLayoutHelper: 固定布局，始终在屏幕固定位置显示
ScrollFixLayoutHelper: 固定布局，但之后当页面滑动到该图片区域才显示, 可以用来做返回顶部或其他书签等
FloatLayoutHelper: 浮动布局，可以固定显示在屏幕上，但用户可以拖拽其位置
ColumnLayoutHelper: 栏格布局，都布局在一排，可以配置不同列之间的宽度比值
SingleLayoutHelper: 通栏布局，只会显示一个组件View
OnePlusNLayoutHelper: 一拖N布局，可以配置1-5个子元素
StickyLayoutHelper: stikcy布局， 可以配置吸顶或者吸底
StaggeredGridLayoutHelper: 瀑布流布局，可配置间隔高度/宽度

示例代码如下：

···
recyclerView = findViewById(R.id.recycler);
        VirtualLayoutManager virtualLayoutManager = new VirtualLayoutManager(this);
        RecyclerView.RecycledViewPool recycledViewPool = new RecyclerView.RecycledViewPool();
        recycledViewPool.setMaxRecycledViews(0, 10);
        recyclerView.setRecycledViewPool(recycledViewPool);
        List<LayoutHelper> layoutHelpers = new ArrayList<>();
        LinearLayoutHelper linearLayoutHelper = new LinearLayoutHelper(10, 2);
        GridLayoutHelper gridLayoutHelper = new GridLayoutHelper(10, 3);
        FixLayoutHelper fixLayoutHelper=new FixLayoutHelper(200,200);
        ScrollFixLayoutHelper scrollFixLayoutHelper=new ScrollFixLayoutHelper(400,400);
        FloatLayoutHelper floatLayoutHelper=new FloatLayoutHelper();
        floatLayoutHelper.setDragEnable(true);
        ColumnLayoutHelper columnLayoutHelper=new ColumnLayoutHelper();
        columnLayoutHelper.setWeights(new float[]{1f,2f,1.2f,5f});
        StickyLayoutHelper stickyLayoutHelper=new StickyLayoutHelper(true);
        layoutHelpers.add(linearLayoutHelper);
        layoutHelpers.add(gridLayoutHelper);
        layoutHelpers.add(fixLayoutHelper);
        layoutHelpers.add(scrollFixLayoutHelper);
        layoutHelpers.add(floatLayoutHelper);
        layoutHelpers.add(columnLayoutHelper);
        layoutHelpers.add(stickyLayoutHelper);
        virtualLayoutManager.setLayoutHelpers(layoutHelpers);
        recyclerView.setLayoutManager(virtualLayoutManager);
        List<String> list = new ArrayList<>();
        for (int i = 0; i < 30; i++) {
            list.add("第" + i + "个");
        }
        recyclerView.setAdapter(new MyShiPei(virtualLayoutManager, list));
···
 class MyShiPei extends VirtualLayoutAdapter<MyViewHolder> {
        private List<String> list;

        public MyShiPei(@NonNull VirtualLayoutManager layoutManager, List<String> list) {
            super(layoutManager);
            this.list = list;
        }

        @Override
        public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            MyViewHolder myViewHolder = new MyViewHolder(LayoutInflater.from(getApplicationContext()).inflate(R.layout.item, parent, false));
            return myViewHolder;
        }

        @Override
        public void onBindViewHolder(MyViewHolder holder, int position) {
            holder.textView.setText(list.get(position));
            holder.imageView.setImageResource(R.mipmap.ic_launcher);
        }

        @Override
        public int getItemCount() {
            return list.size();
        }
    }

    public static class MyViewHolder extends RecyclerView.ViewHolder {
        TextView textView;
        ImageView imageView;

        public MyViewHolder(View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.text);
            imageView = itemView.findViewById(R.id.image);
        }
    }

依赖如下：

compile ('com.alibaba.android:vlayout:1.2.8@aar') {
    transitive = true
}

github地址如下：

https://github.com/alibaba/vlayout