recyclerview的简单使用

<android.support.v7.widget.RecyclerView
android:id="@+id/id_recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
>

mRecyclerView = (RecyclerView)findViewById(R.id.id_recyclerView);
/**纵向的ListView*/
//mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
/**横向listView*/
/*LinearLayoutManager mLinear = new LinearLayoutManager(this);
mLinear.setOrientation(LinearLayoutManager.HORIZONTAL);
mRecyclerView.setLayoutManager(mLinear);*/
/**网格布局GridView*/
//mRecyclerView.setLayoutManager(new GridLayoutManager(this,4));
/**瀑布流布局   注意StaggeredGridLayoutManager.HORIZONTAL横  VERTICAL列  对应第一个参数*/
mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(4,StaggeredGridLayoutManager.VERTICAL));
mRecyclerView.setAdapter(new MyAdapter());
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
mRecyclerView.setHasFixedSize(true);

class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder>{

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
MyViewHolder holder = new MyViewHolder(LayoutInflater.from(MainActivity.this).inflate(R.layout.tv_muban,parent,false));
return holder;
}

@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
holder.tv.setText(data.get(position));

/**动态设置itemView的宽高*/
ViewGroup.LayoutParams params =  holder.itemView.getLayoutParams();
params.height = (int)(200+Math.random()*400);
params.width = (int)(200+Math.random()*400);
holder.itemView.setLayoutParams(params);//把params设置给item布局

}

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

}

class MyViewHolder extends RecyclerView.ViewHolder{
TextView tv;
public MyViewHolder(View view){
super(view);
tv = (TextView) view.findViewById(R.id.tv_muban);
}
}