当RecyclerView有下拉刷新时，有时候设计图上，体现出来的列表有头部布局，这可以通过Adapter实现加载多套布局就可以，这里以加载两种布局为例说明。

先看看Adapter的代码：

import android.annotation.SuppressLint;import android.content.Context;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import com.alvin.R;import java.util.ArrayList;import java.util.List;public class MainListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{ private List<Data> list; private ArrayList<ItemEntity> jdList; private Context context; public MainListAdapter(List<Data> list,ArrayList<ItemEntity> jdList, Context context) { this.list = list; this.jdList = jdList; this.context = context; } @Override public int getItemViewType(int position) { return list.get(position).getShowType(); } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { if(viewType==1){ View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_header_main_list,parent,false); return new HeaderHolder(view); }else{ View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_list_main,parent,false); return new ViewHolderItem(view); } } @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { if(holder instanceof HeaderHolder){ final HeaderHolder headerHolder = (HeaderHolder) holder; //TODO 实现相关逻辑 }else if(holder instanceof ViewHolderItem){ } } @Override public int getItemCount() { return list.size(); } private class HeaderHolder extends RecyclerView.ViewHolder{ HeaderHolder(View itemView) { super(itemView); } } private class ViewHolderItem extends RecyclerView.ViewHolder{ ViewHolderItem(View itemView) { super(itemView); } }}

getItemViewType()这个返回的是列表当前布局类型，在Adapter加载布局时，对齐进行判断，也就是onBindViewHolder()方法中进行相应的判断逻辑实现。

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