Android RecyclerViewStickyHeaders 使用Demo

package com.louisgeek.louisrecyclerviewstickyheadersdemo;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import com.eowise.recyclerview.stickyheaders.OnHeaderClickListener;
import com.eowise.recyclerview.stickyheaders.StickyHeadersBuilder;
import com.eowise.recyclerview.stickyheaders.StickyHeadersItemDecoration;

public class MainActivity extends AppCompatActivity implements OnHeaderClickListener {

private StickyHeadersItemDecoration topStickyHeadersItemDecoration;
RecyclerViewAdapterWithHeader recyclerViewAdapterWithHeader;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

RecyclerView  recyclerView = (RecyclerView)findViewById(R.id.id_rv);

recyclerView.setLayoutManager(new LinearLayoutManager(this));

recyclerViewAdapterWithHeader= new RecyclerViewAdapterWithHeader(this);

recyclerViewAdapterWithHeader.setOnItemClickListener(new RecyclerViewAdapterWithHeader.OnItemClickListener() {
@Override
public void onItemClick(int position, Object object) {

//Toast.makeText(MainActivity.this, "Click on item" + position + ";object：" + object.toString(), Toast.LENGTH_SHORT).show();

//##recyclerViewAdapterWithHeader.addItem(position, "新增数据=点到的是" + position);

}

@Override
public void onItemLongClick(int position, Object object) {
// Toast.makeText(MainActivity.this, "Click long on item" + position + ";object：" + object.toString(), Toast.LENGTH_SHORT).show();

recyclerViewAdapterWithHeader.deleteItem(position);

}
});

topStickyHeadersItemDecoration= new StickyHeadersBuilder()
.setAdapter(recyclerViewAdapterWithHeader)
.setRecyclerView(recyclerView)
.setOnHeaderClickListener(this)
.build();

recyclerView.addItemDecoration(topStickyHeadersItemDecoration);
}

@Override
public void onHeaderClick(View header, long headerId) {
TextView textView= (TextView) header.findViewById(R.id.id_tv_head_item);
Toast.makeText(this, "Click on headerId:" +headerId+";textView="+textView.getText(), Toast.LENGTH_SHORT).show();
}
}

package com.louisgeek.louisrecyclerviewstickyheadersdemo;

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.TextView;

import com.eowise.recyclerview.stickyheaders.StickyHeadersAdapter;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

public class RecyclerViewAdapterWithHeader extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements StickyHeadersAdapter<RecyclerView.ViewHolder> {

private Context mContext;
private OnItemClickListener listener;
private List<Map<String, Object>> mapList = new ArrayList<>();
private List<String> tempItems = new ArrayList<>();
private LinkedHashMap<String, Boolean> linkedHashMap;

public RecyclerViewAdapterWithHeader(Context context) {
this.mContext = context;
/* String[] countries =mContext.getResources().getStringArray(R.array.countries_cn);
listStr=Arrays.asList(countries);*/
for (int i = 0; i < 3; i++) {
Map<String, Object> map = new HashMap<>();
map.put("name", "AA" + i);
mapList.add(map);
}
for (int i = 0; i < 5; i++) {
Map<String, Object> map = new HashMap<>();
map.put("name", "BB" + i);
mapList.add(map);
}
for (int i = 0; i < 8; i++) {
Map<String, Object> map = new HashMap<>();
map.put("name", "CC" + i);
mapList.add(map);
}

//2016年4月12日10:41:08
setHasStableIds(true);
}

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = (View) LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, parent, false);
return new MyViewHolder(view);
}

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {

final MyViewHolder myViewHolder = (MyViewHolder) holder;

//final int realPosition=myViewHolder.getPosition();

myViewHolder.mTextView.setText(mapList.get(position).get("name").toString() + " pos:" + position);

myViewHolder.mTextView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (null != listener) {

listener.onItemClick(position, mapList.get(position));
}
}
});
myViewHolder.mTextView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
if (null != listener) {

listener.onItemLongClick(position, mapList.get(position));
}
return false;
}
});

}

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

//必须重写  不然item会错乱
@Override
public long getItemId(int position) {
//return super.getItemId(position);
// return countries[position].hashCode();
return position;
}

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_header, parent, false);

return new MyHeaderViewHolder(itemView);
}

@Override
public void onBindHeaderViewHolder(RecyclerView.ViewHolder viewHolder, int position) {
MyHeaderViewHolder myHeaderViewHolder = (MyHeaderViewHolder) viewHolder;
myHeaderViewHolder.title.setText(mapList.get(position).get("name").toString().subSequence(0, 1) + " pos:" + position);
//headerViewHolder.title.setText(countries[position].subSequence(0, 1));
}

@Override
public long getHeaderId(int position) {
/*     if (position<3){
return 0;
}else if (position<5){
return 1;
}else if (position<8){
return 2;
}else {
return 3;
}*/
return mapList.get(position).get("name").toString().subSequence(0, 1).hashCode();

}

public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView mTextView;

public MyViewHolder(View view) {
super(view);
mTextView = (TextView) view.findViewById(R.id.id_tv_item);
}
}

public static class MyHeaderViewHolder extends RecyclerView.ViewHolder {

TextView title;

public MyHeaderViewHolder(View itemView) {
super(itemView);

title = (TextView) itemView.findViewById(R.id.id_tv_head_item);
}
}

void addItem(int position, Object object) {
Map<String, Object> map = new HashMap<>();
map.put("name", "新的数据" + position);
mapList.add(position, map);
//notifyDataSetChanged();
notifyItemInserted(position);
}

void deleteItem(int position) {
mapList.remove(position);
//暂时解决RecyclerView删除第一项报错问题  IndexOutOfBoundsException Invalid item position
if (position == 0) {
notifyDataSetChanged();
} else {
notifyItemRemoved(position);
}
//后来发现https://github.com/lucasr/twoway-view/issues/134   有同样的问题 2016-4-12 20:10:49

}

/**
* 内部接口回调方法
*/
public interface OnItemClickListener {
void onItemClick(int position, Object object);

void onItemLongClick(int position, Object object);
}

/**
* 设置监听方法
*
* @param listener
*/
public void setOnItemClickListener(OnItemClickListener listener) {
this.listener = listener;
}
}