---------------------------------------------------------------我是一个帅帅的分割线-------------------------------------------------------

【案例】

小编将通过一个案例实现RecyclerView的使用，下面请看这个案例的实现效果

【关键步骤】

1.在布局文件中添加了对用的控件后，我们需要书写代码，既然和ListView肯定需要适配器，下面我们来看下适配器

package org.monster.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;  /**   * Created by monster on 2015/7/9.   * 继承RecyclerView，实现ListView的效果   * RecyclerView中google强烈要求使用ViewHolder   */  public class SimpleAdapter extends RecyclerView.Adapter<MyViewHolder>{    private List<String> mData;    private Context context;    private LayoutInflater mInflater;    /**     * 声明一个接口，用于实现点击事件     */    public interface  OnItemClickListener{      void OnItemClick(int position,View view);      void OnItemLongClick(int position,View view);    }    private OnItemClickListener mOnItemClickListener;    public  void setOnItemClickListener(OnItemClickListener listener){      this.mOnItemClickListener=listener;    }    /**构造方法的实现**/    public SimpleAdapter(List<String> mData,Context context){      this.mData=mData;      this.context=context;      mInflater=LayoutInflater.from(context);    }    /**     * 创建ViewHolder     * @param parent     * @param viewType     * @return     */    @Override    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {      View view=mInflater.inflate(R.layout.recycler_item,parent,false);      MyViewHolder viewHolder=new MyViewHolder(view);      return viewHolder;    }    /**     * 绑定ViewHolder类,即给控件赋值     * @param holder     * @param position     */    @Override    public void onBindViewHolder(final MyViewHolder holder, final int position) {      holder.tv.setText(mData.get(position));      if (mOnItemClickListener!=null){        holder.itemView.setOnClickListener(new View.OnClickListener() {          @Override          public void onClick(View v) {            int LayoutPosition=holder.getLayoutPosition(); //得到布局的position            mOnItemClickListener.OnItemClick(LayoutPosition,holder.itemView);          }        });        //longclickListener        holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {          @Override          public boolean onLongClick(View v) {            int LayoutPosition=holder.getLayoutPosition(); //得到布局的position            mOnItemClickListener.OnItemLongClick(LayoutPosition,holder.itemView);            return false;          }        });      }    }    @Override    public int getItemCount() {      return mData.size();    }    public void addData(int position){      mData.add(position,"Insert One");      notifyItemInserted(position);    }    public void deleteData(int position){      mData.remove(position);      notifyItemRemoved(position);    }  }  /**   * ViewHolder类，这个类的作用主要用于实例化控件   */    class MyViewHolder extends RecyclerView.ViewHolder{      TextView tv; //声明控件      public MyViewHolder(View itemView) {        super(itemView);        /**初始化控件**/        tv= (TextView) itemView.findViewById(R.id.tv);      }    }

ps:

2.我们来看下MainActivity中的代码：

package org.monster.recyclerviewdemo;  import android.content.Intent;  import android.support.v7.app.ActionBarActivity;  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.Menu;  import android.view.MenuItem;  import android.view.View;  import android.widget.Switch;  import android.widget.Toast;  import java.util.ArrayList;  import java.util.List;  public class MainActivity extends ActionBarActivity {    private RecyclerView recyclerView;    private List<String> mDatas;    private SimpleAdapter adapter;    @Override    protected void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      setContentView(R.layout.activity_main);      initDatas();      initView();      adapter=new SimpleAdapter(mDatas,this);      recyclerView.setAdapter(adapter);      //设置RecyclerView的布局管理      LinearLayoutManager layoutManager=new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);      recyclerView.setLayoutManager(layoutManager);      //设置RecyclerView的item间的分割线       // recyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL_LIST));      //设置RecyclerView的动画      recyclerView.setItemAnimator(new DefaultItemAnimator());      //设置监听事件      adapter.setOnItemClickListener(new SimpleAdapter.OnItemClickListener() {        @Override        public void OnItemClick(int position, View view) {          Toast.makeText(MainActivity.this,"Click: "+position,Toast.LENGTH_SHORT).show();        }        @Override        public void OnItemLongClick(int position, View view) {          Toast.makeText(MainActivity.this,"Long click: "+position,Toast.LENGTH_SHORT).show();        }      });    }    private void initView() {      recyclerView= (RecyclerView) findViewById(R.id.RecyclerView);    }    /**     * 加载数据源     */    private void initDatas() {      mDatas=new ArrayList<String>();      for(int i='A';i<'z';i++){        mDatas.add(" "+(char)i);      }    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {      // Inflate the menu; this adds items to the action bar if it is present.      getMenuInflater().inflate(R.menu.menu_main, menu);      return true;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {      // Handle action bar item clicks here. The action bar will      // automatically handle clicks on the Home/Up button, so long      // as you specify a parent activity in AndroidManifest.xml.      int id = item.getItemId();      switch (id){        case R.id.action_add:          adapter.addData(1);          break;        case R.id.action_delete:          adapter.deleteData(1);          break;        case R.id.action_listview:          recyclerView.setLayoutManager(new LinearLayoutManager(this));          break;        case R.id.action_gridview:          recyclerView.setLayoutManager(new GridLayoutManager(this,3));          break;        case R.id.action_hor_gridview:          recyclerView.setLayoutManager(new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.HORIZONTAL));          break;        case R.id.action_staggered:          Intent i=new Intent(this,StaggerActivity.class);          startActivity(i);          break;      }      return super.onOptionsItemSelected(item);    }  }

PS:

适配器的使用和ListView的使用一样，但是这时候当我们运行程序会发现没有分割线，整个页面成一个了，所以我们需要使用addItemDecoration添加分割线

   设置RecyclerView的item间的分割线         recyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL_LIST));

Comic Sans MS在分割线的部分我们需要引入github中的一个分割线文件：

package org.monster.recyclerviewdemo;  /*   * Copyright (C) 2014 The Android Open Source Project   *   * Licensed under the Apache License, Version 2.0 (the "License");   * you may not use this file except in compliance with the License.   * You may obtain a copy of the License at   *   *   http://www.apache.org/licenses/LICENSE-2.0   *   * Unless required by applicable law or agreed to in writing, software   * distributed under the License is distributed on an "AS IS" BASIS,   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   * See the License for the specific language governing permissions and   * limitations under the License.   */  import android.content.Context;  import android.content.res.TypedArray;  import android.graphics.Canvas;  import android.graphics.Rect;  import android.graphics.drawable.Drawable;  import android.support.v7.widget.LinearLayoutManager;  import android.support.v7.widget.RecyclerView;  import android.util.Log;  import android.view.View;  /**   * This class is from the v7 samples of the Android SDK. It's not by me!   * <p/>   * See the license above for details.   */  public class DividerItemDecoration extends RecyclerView.ItemDecoration  {    private static final int[] ATTRS = new int[] { android.R.attr.listDivider };    public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;    public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;    private Drawable mDivider;    private int mOrientation;    public DividerItemDecoration(Context context, int orientation)    {      final TypedArray a = context.obtainStyledAttributes(ATTRS);      mDivider = a.getDrawable(0);      a.recycle();      setOrientation(orientation);    }    public void setOrientation(int orientation)    {      if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST)      {        throw new IllegalArgumentException("invalid orientation");      }      mOrientation = orientation;    }    @Override    public void onDraw(Canvas c, RecyclerView parent)    {       if (mOrientation == VERTICAL_LIST) {          drawVertical(c, parent);        } else {          drawHorizontal(c, parent);        }    }    public void drawVertical(Canvas c, RecyclerView parent)    {      final int left = parent.getPaddingLeft();      final int right = parent.getWidth() - parent.getPaddingRight();      final int childCount = parent.getChildCount();      for (int i = 0; i < childCount; i++)      {        final View child = parent.getChildAt(i);        RecyclerView v = new RecyclerView(            parent.getContext());        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child            .getLayoutParams();        final int top = child.getBottom() + params.bottomMargin;        final int bottom = top + mDivider.getIntrinsicHeight();        mDivider.setBounds(left, top, right, bottom);        mDivider.draw(c);      }    }    public void drawHorizontal(Canvas c, RecyclerView parent)    {      final int top = parent.getPaddingTop();      final int bottom = parent.getHeight() - parent.getPaddingBottom();      final int childCount = parent.getChildCount();      for (int i = 0; i < childCount; i++)      {        final View child = parent.getChildAt(i);        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child            .getLayoutParams();        final int left = child.getRight() + params.rightMargin;        final int right = left + mDivider.getIntrinsicHeight();        mDivider.setBounds(left, top, right, bottom);        mDivider.draw(c);      }    }    @Override    public void getItemOffsets(Rect outRect, int itemPosition,        RecyclerView parent)    {      if (mOrientation == VERTICAL_LIST)      {        outRect.set(0, 0, 0, mDivider.getIntrinsicHeight());      } else      {        outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0);      }    }  }

      //设置RecyclerView的布局管理          LinearLayoutManager layoutManager=new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);          recyclerView.setLayoutManager(layoutManager);

 //设置RecyclerView的动画 recyclerView.setItemAnimator(new DefaultItemAnimator());

如何在对Recycler中的item设置监听事件？这个监听事件系统不提供，需要我们手动编写

--->我们需要在适配器添加一个接口：

/**   * 声明一个接口，用于实现点击事件   */  public interface  OnItemClickListener{    void OnItemClick(int position,View view);    void OnItemLongClick(int position,View view);  }  private OnItemClickListener mOnItemClickListener;  public  void setOnItemClickListener(OnItemClickListener listener){    this.mOnItemClickListener=listener;  }  /**构造方法的实现**/  public SimpleAdapter(List<String> mData,Context context){    this.mData=mData;    this.context=context;    mInflater=LayoutInflater.from(context);  }

/**     * 绑定ViewHolder类,即给控件赋值     * @param holder     * @param position     */    @Override    public void onBindViewHolder(final MyViewHolder holder, final int position) {      holder.tv.setText(mData.get(position));      if (mOnItemClickListener!=null){        holder.itemView.setOnClickListener(new View.OnClickListener() {          @Override          public void onClick(View v) {            int LayoutPosition=holder.getLayoutPosition(); //得到布局的position            mOnItemClickListener.OnItemClick(LayoutPosition,holder.itemView);          }        });        //longclickListener        holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {          @Override          public boolean onLongClick(View v) {            int LayoutPosition=holder.getLayoutPosition(); //得到布局的position            mOnItemClickListener.OnItemLongClick(LayoutPosition,holder.itemView);            return false;          }        });      }    }

//设置监听事件  adapter.setOnItemClickListener(new SimpleAdapter.OnItemClickListener() {    @Override    public void OnItemClick(int position, View view) {      Toast.makeText(MainActivity.this,"Click: "+position,Toast.LENGTH_SHORT).show();    }    @Override    public void OnItemLongClick(int position, View view) {      Toast.makeText(MainActivity.this,"Long click: "+position,Toast.LENGTH_SHORT).show();    }  });

上述即为RecyclerView的简单实用，程序中的其他样式敬请参考【源码】

【视频】

【源码】