RecyclerView 实现横向滚动与瀑布流布局

Recyclerview的使用方式方式与ListView大致相似，关键代码如下：
横向滚动代码段：
Recyclerview recyclerview = (Recyclerview)findViewById(R.id.recyclerview);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
recyclerview.setLayoutManager(layoutManager);
MyAdapter adapter = new Myadater();
recyclerview.setAdaper(adapter);

瀑布流布局代码段：
Recyclerview mRecyclerView = (Recyclerview)findViewById(R.id.recyclerview);
StaggeredGridLayoutManager mLayoutManager = new StaggeredGridLayoutManager(columnNum, StaggeredGridLayoutManager.VERTICAL);
mRecyclerView.setLayoutManager(mLayoutManager);
MyAdapter adapter = new Myadater();
mRecyclerView.setAdaper(adapter);