问题的提出：
我在使用RecyclerView的时候就想到了既然ListView可以通过addHeaderView来添加HeaderView，那么RecyclerView既然能够实现ListView的功能，那么肯定也可以添加HeaderView。
然后就开始在网上寻找相关的解决办法，最终找到了下面的解决途径：
1、首先，新建一个继承自RecyclerView的子类（WrapRecyclerView），并且在布局文件中将系统的android.support.v7.widget.RecyclerView替换成继承RecyclerView的子类（WrapRecyclerView）。
2、在WrapRecyclerView中添加addHeaderView和addFooterView的方法
/**
* 添加头布局
*
* @param view
*/
public void addHeaderView(View view) {
mHeaderViews.clear();
mHeaderViews.add(view);
if (mAdapter != null) {
if (!(mAdapter instanceof RecyclerWrapAdapter)) {
mAdapter = new RecyclerWrapAdapter(mHeaderViews, mFooterViews, mAdapter);
mAdapter.notifyDataSetChanged();
}
}
}
/**
* 添加尾布局
* @param view
*/
public void addFooterView(View view){
mFooterViews.clear();
mFooterViews.add(view);
if(mAdapter != null){
if(!(mAdapter instanceof RecyclerWrapAdapter)){
mAdapter = new RecyclerWrapAdapter(mHeaderViews,mFooterViews,mAdapter);
mAdapter.notifyDataSetChanged();
}
}
}
3、在setAdapter方法中将原有的Adapter通过RecyclerWrapAdapter这个包装类重新包装一次，这里就使用到了设计模式中的装饰模式（在不必改变原类文件和使用继承的情况下，动态地扩展一个对象的功能。）
@Override
public void setAdapter(Adapter adapter) {
super.setAdapter(adapter);
if (mHeaderViews.isEmpty() && mFooterViews.isEmpty()) {
super.setAdapter(adapter);
} else {
adapter = new RecyclerWrapAdapter(mHeaderViews, mFooterViews, adapter);
super.setAdapter(adapter);
}
mAdapter = adapter;
}
*所以我们要重点关注的就是RecyclerWrapAdatper的实现*
1、对Adapter的count进行了重新计算
@Override
public int getItemCount() {
if (mAdapter != null) {
return getHeadersCount() + getFootersCount() + mAdapter.getItemCount();
} else {
return getHeadersCount() + getFootersCount();
}
}
2、onBindViewHolder、onCreateViewHolder、getItemViewType方法是重点
其中，onBindViewHolder的作用主要用于适配渲染数据到View中。
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
int numHeaders = getHeadersCount();
if (position < numHeaders) {
return;
}
int adjPosition = position - numHeaders;
int adapterCount = 0;
if (mAdapter != null) {
adapterCount = mAdapter.getItemCount();
if (adjPosition < adapterCount) {
mAdapter.onBindViewHolder(holder, adjPosition);
return;
}
}
}
onCreateViewHolder的作用主要生成为每个Item inflater出一个View，但是该方法返回的是一个ViewHolder。方法是把View直接封装在ViewHolder中，然后我们面向的是ViewHolder这个实例，当然这个ViewHolder需要我们自己去编写。
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (viewType == RecyclerView.INVALID_TYPE) {
return new HeaderViewHolder(mHeaderViews.get(0));
} else if (viewType == RecyclerView.INVALID_TYPE - 1) {
return new HeaderViewHolder(mFooterViews.get(0));
}
return mAdapter.onCreateViewHolder(parent, viewType);
}
getItemViewType的作用就是确认是哪个View占用
@Override
public int getItemViewType(int position) {
mCurrentPosition = position;
int numHeaders = getHeadersCount();
if (position < numHeaders) {
return RecyclerView.INVALID_TYPE; // 说明是Header所占用的空间
}
int adjPosition = position - numHeaders;
int adapterCount = 0;
if (mAdapter != null) {
adapterCount = mAdapter.getItemCount();
if (adjPosition < adapterCount) {
return mAdapter.getItemViewType(adjPosition);
}
}
return RecyclerView.INVALID_TYPE - 1; // 说明是Footer的所占用的空间
}
下面就是在MainActivity中的使用了
mAdapter = new HomeAdapter(IntegralMallActivity.this, mDatas);
layoutManager = new GridLayoutManager(this, 2);
mRecycleView.setLayoutManager(layoutManager);
mRecycleView.setLayoutManagerForWrapRecyclerView(layoutManager);
textView = new TextView(this);
ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(ViewGroup.LayoutParams
.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
textView.setLayoutParams(params);
textView.setText("我是头部TextView");
mRecycleView.addHeaderView(textView);
mRecycleView.setAdapter(mAdapter);
mRecycleView.addItemDecoration(new DividerGridItemDecoration(this));
就有了下面的效果：
很明显，这不是我们想要的效果
所以就有了下面的改进：
在RecyclerWrapAdapter中的onAttachedToRecyclerView中进行相关的操作，让Header和Footer都能够占据一行
@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
RecyclerView.LayoutManager manager = recyclerView.getLayoutManager();
if(manager instanceof GridLayoutManager){ // 布局是GridLayoutManager所管理
final GridLayoutManager gridLayoutManager = (GridLayoutManager) manager;
gridLayoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
@Override
public int getSpanSize(int position) {
// 如果是Header、Footer的对象则占据spanCount的位置，否则就只占用1个位置
return (isHeader(position) || isFooter(position)) ? gridLayoutManager.getSpanCount() : 1;
}
});
}
}
/**
* 判断是否是Header的位置
* 如果是Header的则返回true否则返回false
* @param position
* @return
*/
public boolean isHeader(int position){
return position >= 0 && position < mHeaderViews.size();
}
/**
* 判断是否是Footer的位置
* 如果是Footer的位置则返回true否则返回false
* @param position
* @return
*/
public boolean isFooter(int position){
return position < getItemCount() && position >= getItemCount() - mFooterViews.size();
}
其中值得我们去解释的是下面这段代码：
return (isHeader(position) || isFooter(position)) ? gridLayoutManager.getSpanCount() : 1;
大家可能会想不应该是Header、Footer就使用1行来显示吗？那为什么会是gridLayoutManger.getSpanCount()？
需要指出的是setSpanSizeLookup的意思是View需要用多少空间来显示，如果不是Header、Footer则只用一个空间，如果是Header、Footer则占据的是一行的空间。
这样就有了以下效果：
就这样，成功添加HeaderView，如法炮制，添加FooterView也是一样可以的
下面就将源码贴出：
package com.deltalab.urecommend.adapter.friend_pager;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import com.deltalab.urecommend.adapter.base.WrapperAdapter;
import java.util.ArrayList;
/**
* Created by asus on 2016/10/14.
* 添加了headerView和footerView的布局适配器
*
* @author Administrator
* @time 2016/10/14 16:54
*/
public class RecyclerWrapAdapter extends RecyclerView.Adapter implements WrapperAdapter {
private RecyclerView.Adapter mAdapter;
private ArrayList<View> mHeaderViews;
private ArrayList<View> mFooterViews;
private int mCurrentPosition;
static final ArrayList<View> EMPTY_INFO_LIST = new ArrayList<View>();
public RecyclerWrapAdapter(ArrayList<View> mHeaderViews, ArrayList<View> mFooterViews,
RecyclerView.Adapter mAdapter) {
this.mAdapter = mAdapter;
if (mHeaderViews == null) {
this.mHeaderViews = EMPTY_INFO_LIST;
} else {
this.mHeaderViews = mHeaderViews;
}
if (mFooterViews == null) {
this.mFooterViews = EMPTY_INFO_LIST;
} else {
this.mFooterViews = mFooterViews;
}
}
/**
* 获取头布局的数量
*
* @return
*/
public int getHeadersCount() {
return mHeaderViews.size();
}
public int getFootersCount() {
return mFooterViews.size();
}
/**
* 把View直接封装在ViewHolder中，然后我们面向的是ViewHolder这个实例
* 如果是Header、Footer则使用HeaderViewHolder封装
* 如果是其他的就不变
* @param parent
* @param viewType
* @return
*/
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (viewType == RecyclerView.INVALID_TYPE) {
return new HeaderViewHolder(mHeaderViews.get(0));
} else if (viewType == RecyclerView.INVALID_TYPE - 1) {
return new HeaderViewHolder(mFooterViews.get(0));
}
return mAdapter.onCreateViewHolder(parent, viewType);
}
/**
* 用于适配渲染数据到View中。方法提供给你了一个viewHolder，而不是原来的convertView。
* @param holder
* @param position
*/
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
int numHeaders = getHeadersCount();
if (position < numHeaders) {
return;
}
int adjPosition = position - numHeaders;
int adapterCount = 0;
if (mAdapter != null) {
adapterCount = mAdapter.getItemCount();
if (adjPosition < adapterCount) {
mAdapter.onBindViewHolder(holder, adjPosition);
return;
}
}
}
/**
* 将Header、Footer挂靠到RecyclerView
* @param recyclerView
*/
@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
RecyclerView.LayoutManager manager = recyclerView.getLayoutManager();
if(manager instanceof GridLayoutManager){ // 布局是GridLayoutManager所管理
final GridLayoutManager gridLayoutManager = (GridLayoutManager) manager;
gridLayoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
@Override
public int getSpanSize(int position) {
// 如果是Header、Footer的对象则占据spanCount的位置，否则就只占用1个位置
return (isHeader(position) || isFooter(position)) ? gridLayoutManager.getSpanCount() : 1;
}
});
}
}
/**
* 判断是否是Header的位置
* 如果是Header的则返回true否则返回false
* @param position
* @return
*/
public boolean isHeader(int position){
return position >= 0 && position < mHeaderViews.size();
}
/**
* 判断是否是Footer的位置
* 如果是Footer的位置则返回true否则返回false
* @param position
* @return
*/
public boolean isFooter(int position){
return position < getItemCount() && position >= getItemCount() - mFooterViews.size();
}
@Override
public int getItemCount() {
if (mAdapter != null) {
return getHeadersCount() + getFootersCount() + mAdapter.getItemCount();
} else {
return getHeadersCount() + getFootersCount();
}
}
@Override
public int getItemViewType(int position) {
mCurrentPosition = position;
int numHeaders = getHeadersCount();
if (position < numHeaders) {
return RecyclerView.INVALID_TYPE; // 说明是Header所占用的空间
}
int adjPosition = position - numHeaders;
int adapterCount = 0;
if (mAdapter != null) {
adapterCount = mAdapter.getItemCount();
if (adjPosition < adapterCount) {
return mAdapter.getItemViewType(adjPosition);
}
}
return RecyclerView.INVALID_TYPE - 1; // 说明是Footer的所占用的空间
}
@Override
public long getItemId(int position) {
int numHeaders = getHeadersCount();
if (mAdapter != null && position >= numHeaders) {
int adjPosition = position - numHeaders;
int adapterCount = mAdapter.getItemCount();
if (adjPosition < adapterCount) {
return mAdapter.getItemId(adjPosition); // 不是Header和Footer则返回其itemId
}
}
return -1;
}
@Override
public RecyclerView.Adapter getWrapperAdapter() {
return mAdapter;
}
private static class HeaderViewHolder extends RecyclerView.ViewHolder {
public HeaderViewHolder(View itemView) {
super(itemView);
}
}
}
package com.deltalab.urecommend.adapter.friend_pager;
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.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.deltalab.urecommend.BmobIMbase.ImageLoaderFactory;
import com.deltalab.urecommend.R;
import com.deltalab.urecommend.domin.IntegralMall;
import java.util.List;
import cn.bmob.v3.datatype.BmobFile;
/**
* Created by asus on 2016/10/9.
* 基本布局的适配器
*
* @author Administrator
* @time 2016/10/9 17:30
*/
public class HomeAdapter extends RecyclerView.Adapter<HomeAdapter.MyViewHolder> {
private List<IntegralMall> mDatas;
private LayoutInflater mInflater;
public interface OnItemClickListener {
void onItemClick(View view, int position);
void onItemLongClick(View view, int position);
}
private OnItemClickListener mOnItemClickListener;
public void setOnItemClickListener(OnItemClickListener mOnItemClickListener) {
this.mOnItemClickListener = mOnItemClickListener;
}
public HomeAdapter(Context context, List<IntegralMall> datas) {
mInflater = LayoutInflater.from(context);
mDatas = datas;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
MyViewHolder holder = new MyViewHolder(mInflater.inflate(R.layout.item_home, parent,
false));
return holder;
}
@Override
public void onBindViewHolder(final MyViewHolder holder, int position) {
// holder.tv.setText(mDatas.get(position));
String name = mDatas.get(position).getName();
String type = mDatas.get(position).getType();
BmobFile pic = mDatas.get(position).getPic();
if (pic != null) {
String url = pic.getUrl();
if (url != null) { // 第三个参数是在url == "" 才会调用
ImageLoaderFactory.getLoader().loadAvator(holder.mIvPicture, url, R.mipmap
.ic_launche);
} else {
holder.mIvPicture.setImageResource(R.mipmap.ic_launche);
}
} else {
holder.mIvPicture.setImageResource(R.mipmap.ic_launche);
}
int num = mDatas.get(position).getNum();
double size = num;
String finalNum = num + "积分";
if (num >= 10000) {
size = num / 10000.0;
finalNum = size + "万积分";
}
if (type.equals("竞猜")) {
holder.mIvSign.setImageResource(R.mipmap.word_guess);
} else if (type.equals("免费")) {
holder.mIvSign.setImageResource(R.mipmap.word_free);
} else if (type.equals("抽奖")) {
holder.mIvSign.setImageResource(R.mipmap.word_luck_draw);
}
holder.mTvIntegral.setText(finalNum);
holder.mTvName.setText(name);
// 如果设置了回调，则设置点击事件
if (mOnItemClickListener != null) {
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int pos = holder.getLayoutPosition();
mOnItemClickListener.onItemClick(holder.itemView, pos);
}
});
holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
int pos = holder.getLayoutPosition();
mOnItemClickListener.onItemLongClick(holder.itemView, pos);
// 返回true表示自己处理了，不需要交到onClick中去了
// 返回false表示自己没有处理，交到onClick中去
return true;
}
});
}
}
@Override
public int getItemCount() {
return mDatas.size();
}
class MyViewHolder extends RecyclerView.ViewHolder {
RelativeLayout tv;
ImageView mIvPicture;
TextView mTvName;
TextView mTvIntegral;
ImageView mIvSign;
public MyViewHolder(View view) {
super(view);
tv = (RelativeLayout) view.findViewById(R.id.rl_num);
mIvPicture = (ImageView) view.findViewById(R.id.iv_picture);
mTvName = (TextView) view.findViewById(R.id.tv_name);
mTvIntegral = (TextView) view.findViewById(R.id.tv_integral);
mIvSign = (ImageView) view.findViewById(R.id.iv_sign);
}
}
}
package com.deltalab.urecommend.view;
import android.content.Context;
import android.support.annotation.Nullable;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;
import com.bartoszlipinski.recyclerviewheader.RecyclerViewHeader;
import com.deltalab.urecommend.R;
import com.deltalab.urecommend.adapter.friend_pager.RecyclerWrapAdapter;
import java.util.ArrayList;
import java.util.Date;
/**
* Created by asus on 2016/10/13.
* 能够任意添加Header和Footer的自定义的RecyclerView
*
* @author Administrator
* @time 2016/10/13 21:16
*/
public class WrapRecyclerView extends RecyclerView {
private static final int STATE_PULL_REFRESH = 0; // 下拉刷新
private static final int STATE_RELEASE_REFRESH = 1; // 松开刷新
private static final int STATE_REFRESHING = 2; // 正在刷新
private int mCurrentState = STATE_PULL_REFRESH; // 当前状态
private ArrayList<View> mHeaderViews = new ArrayList<>();
private ArrayList<View> mFooterViews = new ArrayList<>();
private Adapter mAdapter;
private RecyclerViewHeader header;
private int headerHeight;
private TextView tvTitle;
private TextView tvTime;
private ImageView ivArrow;
private ProgressBar pbProgress;
private int startY = -1;
private int endY;
private RotateAnimation animUp;
private RotateAnimation animDown;
WrapRecyclerView.OnRefreshListener mListener;
private GridLayoutManager layoutManager;
public WrapRecyclerView(Context context) {
super(context);
initHeaderView();
}
public WrapRecyclerView(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
initHeaderView();
}
public WrapRecyclerView(Context context, @Nullable AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initHeaderView();
}
/**
* 添加头布局
* 只能添加一个头布局
* @param view
*/
public void addHeaderView(View view) {
mHeaderViews.clear();
mHeaderViews.add(view);
if (mAdapter != null) {
if (!(mAdapter instanceof RecyclerWrapAdapter)) {
mAdapter = new RecyclerWrapAdapter(mHeaderViews, mFooterViews, mAdapter);
mAdapter.notifyDataSetChanged();
}
}
}
/**
* 添加尾布局
* 只能添加一个尾布局
* @param view
*/
public void addFooterView(View view){
mFooterViews.clear();
mFooterViews.add(view);
if(mAdapter != null){
if(!(mAdapter instanceof RecyclerWrapAdapter)){
mAdapter = new RecyclerWrapAdapter(mHeaderViews,mFooterViews,mAdapter);
mAdapter.notifyDataSetChanged();
}
}
}
/**
* 初始化头布局
*/
private void initHeaderView() {
header = RecyclerViewHeader.fromXml(getContext(), R.layout.refresh_header);
tvTitle = (TextView) header.findViewById(R.id.tv_title);
tvTime = (TextView) header.findViewById(R.id.tv_time);
ivArrow = (ImageView) header.findViewById(R.id.iv_arr);
pbProgress = (ProgressBar) header.findViewById(R.id.pb_progress);
header.measure(0, 0);
headerHeight = header.getMeasuredHeight();
// 隐藏头布局
header.setPadding(0, -headerHeight, 0, 0); // 负的值就能够让控件向上移动了
initArrowAnim(); // 初始化箭头动画
// 更新最后刷新的时间
tvTime.setText("最后刷新时间" + getCurrentTime());
}
/**
* 获取头布局用户
*
* @return
*/
public RecyclerViewHeader getHeaderview() {
return header;
}
@Override
public void setAdapter(Adapter adapter) {
super.setAdapter(adapter);
if (mHeaderViews.isEmpty() && mFooterViews.isEmpty()) {
super.setAdapter(adapter);
} else {
adapter = new RecyclerWrapAdapter(mHeaderViews, mFooterViews, adapter);
super.setAdapter(adapter);
}
mAdapter = adapter;
}
@Override
public void onScrollStateChanged(int state) {
super.onScrollStateChanged(state);
}
/**
* 监听用户的触摸操作
*
* @param event
* @return
*/
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
startY = (int) event.getRawY();
break;
case MotionEvent.ACTION_MOVE:
if (startY == -1) { // 确保startY有效
startY = (int) event.getRawY();
}
if (mCurrentState == STATE_REFRESHING) { // 正在刷新时，不做处理
break;
}
endY = (int) event.getRawY();
int dy = endY - startY; // 移动偏移量
if (dy > 0 && layoutManager.findFirstVisibleItemPosition() == 0) { // 只有下拉并且当前是第一个item才允许下拉
int padding = dy - headerHeight; // 计算padding
header.setPadding(0, padding, 0, 0); // 设置当前的padding
if (padding > 0 && mCurrentState != STATE_RELEASE_REFRESH) { // 状态改为松开刷新
mCurrentState = STATE_RELEASE_REFRESH;
refreshState();
} else if (padding < 0 && mCurrentState != STATE_PULL_REFRESH) { // 改为下拉刷新状态
mCurrentState = STATE_PULL_REFRESH;
refreshState();
}
return true;
}
break;
case MotionEvent.ACTION_UP:
startY = -1; // 重置
if (mCurrentState == STATE_PULL_REFRESH) { // 如果是松开刷新状态就变成正在刷新状态
mCurrentState = STATE_REFRESHING; // 正在刷新
// 将状态的padding变成0
header.setPadding(0, 0, 0, 0); // 显示
refreshState();
} else if (mCurrentState == STATE_PULL_REFRESH) {
// 将隐藏标题
header.setPadding(0, -headerHeight, 0, 0);
}
break;
}
return super.onTouchEvent(event);
}
public void setOnRefreshListener(WrapRecyclerView.OnRefreshListener listener) {
mListener = listener;
}
/**
* 设置布局的LayoutManager
*
* @param layoutManager
*/
public void setLayoutManagerForWrapRecyclerView(GridLayoutManager layoutManager) {
this.layoutManager = layoutManager;
}
/**
* 刷新下拉控件的布局
*/
private void refreshState() {
switch (mCurrentState) {
case STATE_PULL_REFRESH:
tvTitle.setText("下拉刷新");
ivArrow.setVisibility(View.VISIBLE);
pbProgress.setVisibility(View.VISIBLE);
ivArrow.startAnimation(animDown); // 箭头向下
break;
case STATE_RELEASE_REFRESH:
tvTitle.setText("松开刷新");
ivArrow.setVisibility(View.VISIBLE);
pbProgress.setVisibility(View.INVISIBLE);
ivArrow.startAnimation(animUp);
break;
case STATE_REFRESHING:
tvTitle.setText("正在刷新");
// 必须要先清除动画以后才能去把那个箭头给隐藏
ivArrow.clearAnimation();
ivArrow.setVisibility(View.INVISIBLE);
pbProgress.setVisibility(View.VISIBLE);
if (mListener != null) {
mListener.onRefresh();
}
break;
}
}
/**
* 初始化箭头方向
*/
private void initArrowAnim() {
// 箭头向上的动画
animUp = new RotateAnimation(0, -180, Animation.RELATIVE_TO_SELF, 0.5f, Animation
.RELATIVE_TO_SELF, 0.5f);
animUp.setDuration(200);
animUp.setFillAfter(true);
// 箭头向下的动画
animDown = new RotateAnimation(0, -180, Animation.RELATIVE_TO_SELF, 0.5f, Animation
.RELATIVE_TO_SELF, 0.5f);
animDown.setDuration(200);
animDown.setFillAfter(true);
}
/**
* 获取当前时间
*
* @return
*/
public String getCurrentTime() {
// 设置时间的输出格式
// 需要注意的是:HH表示的是24小时制，hh表示的是12小时制
// 需要注意的是:月的MM表示的是1月份从1开始，mm表示的1月份从0开始
java.text.SimpleDateFormat format = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return format.format(new Date());
}
public interface OnRefreshListener {
public void onRefresh();
public void onLoadMore(); // 加载更多数据
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.deltalab.urecommend.view.WrapRecyclerView
android:id="@+id/id_recyclerview"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>