RecyclerView增加数据：

MyAdapter.java:

package com.iwanghang.recyclerviewdemo;

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 java.util.List;

/**

* ViewHolder 减少不必要的调用findViewById，不必要每次都重新加载控件布局

*/

public class MyAdapter extends RecyclerView.Adapter implements View.OnClickListener {

private Context context;

private List list;

// 接口回调

private OnMyItemClickListener listener;

private RecyclerView recyclerView;

// 接口回调 setter getter

// public OnMyItemClickListener getOnMyItemClickListener() {

// return listener;

// }

public void setOnMyItemClickListener(OnMyItemClickListener listener) {

this.listener = listener;

}

// 当它连接到一个RecyclerView调用的方法

@Override

public void onAttachedToRecyclerView(RecyclerView recyclerView) {

super.onAttachedToRecyclerView(recyclerView);

this.recyclerView = recyclerView;

}

// 当它与RecyclerView解除连接调用的方法

@Override

public void onDetachedFromRecyclerView(RecyclerView recyclerView) {

super.onDetachedFromRecyclerView(recyclerView);

this.recyclerView = null;

}

public MyAdapter(Context context, List list) {

this.context = context;

this.list = list;

}

@Override

public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

View view = LayoutInflater.from(context).inflate(R.layout.item,parent,false);

view.setOnClickListener(this);

return new MyViewHolder(view);

}

// 上面 view.setOnClickListener(this);的点击实现方法

@Override

public void onClick(View view) {

if (recyclerView != null && listener != null) {

int position = recyclerView.getChildAdapterPosition(view);

listener.onMyItemClick(recyclerView,view,position,list.get(position)); // 接口回调

}

}

@Override

public void onBindViewHolder(MyViewHolder holder, int position) {

holder.item_text.setText(list.get(position));

}

@Override

public int getItemCount() {

return list.size();

}

public static class MyViewHolder extends RecyclerView.ViewHolder{

private TextView item_text;

public MyViewHolder(View itemView) {

super(itemView);

item_text = (TextView) itemView.findViewById(R.id.item_text);

}

}

// public Context getContext() {

// return context;

// }

// public void setContext(Context context) {

// this.context = context;

// }

// public List getList() {

// return list;

// }

// public void setList(List list) {

// this.list = list;

// }

// 接口回调

public interface OnMyItemClickListener{

void onMyItemClick(RecyclerView parent, View view, int position, String data);

}

// 删除数据

public void remove(int position){

list.remove(position);

//notifyDataSetChanged();// 提醒list刷新，没有动画效果

notifyItemRemoved(position); // 提醒item删除指定数据，这里有RecyclerView的动画效果

}

// 添加数据

public void add(int position, String data){

list.add(position, data);

notifyItemInserted(position);

}

}MainActivity.java:

package com.iwanghang.recyclerviewdemo;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.support.v7.widget.DefaultItemAnimator;

import android.support.v7.widget.GridLayoutManager;

import android.support.v7.widget.LinearLayoutManager;

import android.support.v7.widget.RecyclerView;

import android.support.v7.widget.StaggeredGridLayoutManager;

import android.view.View;

import android.widget.Toast;

import java.util.ArrayList;

import java.util.List;

import java.util.Locale;

/**

* RecyclerView 可以简单的理解为ListView

*/

public class MainActivity extends AppCompatActivity implements MyAdapter.OnMyItemClickListener {

RecyclerView recycler;

MyAdapter adapter;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

recycler = (RecyclerView) findViewById(R.id.recycler);

List list = new ArrayList<>();

for (int i = 0; i <100 ; i++) {

list.add(String.format(Locale.CHINA,"第%03d条数据",i));

// list.add(String.format(Locale.CHINA,"第%03d条数据%s", i, i % 2 == 0 ? "" : "" +

// "据据据据据据据据据据据据据据据据据据据据据据据据据据据据据"));

}

adapter = new MyAdapter(this,list);

//

LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this,

LinearLayoutManager.VERTICAL, false);

// 瀑布流(不规则的网格布局)

StaggeredGridLayoutManager staggeredGridLayoutManager = new StaggeredGridLayoutManager(3,

StaggeredGridLayoutManager.VERTICAL);

// 动画效果

//DefaultItemAnimator animator = new DefaultItemAnimator(); // RecyclerView默认的属性动画

MyItemAnimator animator = new MyItemAnimator(); // 我们自己的属性动画

animator.setRemoveDuration(2000); // 删除动画的延迟时间

animator.setMoveDuration(2000); // 移动动画的延迟时间

recycler.setLayoutManager(linearLayoutManager);

recycler.setItemAnimator(animator);

recycler.setAdapter(adapter);

adapter.setOnMyItemClickListener(this);

}

@Override

public void onMyItemClick(RecyclerView parent, View view, int position, String data) {

Toast.makeText(this, data, Toast.LENGTH_SHORT).show();

//adapter.remove(position); // 删除数据

adapter.add(position,"New"); // 添加数据

}

}其他的类和文件请看上一篇博文。