使用RecyclerView实现水平列表

<&＃63;xml version="1.0" encoding="utf-8"&＃63;>

 
 
 
 
 
 

package ivan.com.appbackendtest;
 
import android.content.Context;
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.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
 
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
 
/**
 * Created by ivan on 2017/6/9.
 */
 
public class HorizontalListviewActivity extends AppCompatActivity {
 private RecyclerView recyclerview_horizontal1;
 private GalleryAdapter mAdapter1;
 private RecyclerView recyclerview_horizontal2;
 private GalleryAdapter mAdapter2;
 private RecyclerView recyclerview_horizontal3;
 private GalleryAdapter mAdapter3;
 private List mDatas1;
 private List mDatas2;
 private List mDatas3;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_horizontallistview);
  initDatas();
  //得到控件
  recyclerview_horizontal1 = (RecyclerView)findViewById(R.id.recyclerview_horizontal1);
  //设置布局管理器
  LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
  linearLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
  recyclerview_horizontal1.setLayoutManager(linearLayoutManager);
  //设置适配器
  mAdapter1 = new GalleryAdapter(this, mDatas1);
  recyclerview_horizontal1.setAdapter(mAdapter1);
 
  //得到控件
  recyclerview_horizontal2 = (RecyclerView)findViewById(R.id.recyclerview_horizontal2);
  //设置布局管理器
  LinearLayoutManager linearLayoutManager2 = new LinearLayoutManager(this);
  linearLayoutManager2.setOrientation(LinearLayoutManager.HORIZONTAL);
  recyclerview_horizontal2.setLayoutManager(linearLayoutManager2);
  //设置适配器
  mAdapter2 = new GalleryAdapter(this, mDatas2);
  recyclerview_horizontal2.setAdapter(mAdapter2);
 
  //得到控件
  recyclerview_horizontal3 = (RecyclerView)findViewById(R.id.recyclerview_horizontal3);
  //设置布局管理器
  LinearLayoutManager linearLayoutManager3 = new LinearLayoutManager(this);
  linearLayoutManager3.setOrientation(LinearLayoutManager.HORIZONTAL);
  recyclerview_horizontal3.setLayoutManager(linearLayoutManager3);
  //设置适配器
  mAdapter3 = new GalleryAdapter(this, mDatas3);
  recyclerview_horizontal3.setAdapter(mAdapter3);
 }
 private void initDatas()
 {
  mDatas1 = new ArrayList<>(Arrays.asList(R.mipmap.ic_launcher));
  mDatas2 = new ArrayList<>(Arrays.asList(R.mipmap.ic_launcher,R.mipmap.ic_launcher));
  mDatas3 = new ArrayList<>(Arrays.asList(R.mipmap.ic_launcher,R.mipmap.ic_launcher,R.mipmap.ic_launcher,R.mipmap.ic_launcher,R.mipmap.ic_launcher,R.mipmap.ic_launcher));
 }
 public class GalleryAdapter extends
   RecyclerView.Adapter
 {
  private LayoutInflater mInflater;
  private List mDatas;
 
  public GalleryAdapter(Context context, List datats)
  {
   mInflater = LayoutInflater.from(context);
   mDatas = datats;
  }
 
  public class ViewHolder extends RecyclerView.ViewHolder
  {
   public ViewHolder(View arg0)
   {
    super(arg0);
   }
 
   ImageView mImg;
   TextView mTxt;
  }
 
  @Override
  public int getItemCount()
  {
   return mDatas.size();
  }
 
  /**
   * 创建ViewHolder
   */
  @Override
  public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i)
  {
   View view = mInflater.inflate(R.layout.item_listview,
     viewGroup, false);
   ViewHolder viewHolder = new ViewHolder(view);
 
   viewHolder.mImg = (ImageView) view
     .findViewById(R.id.id_index_gallery_item_image);
   return viewHolder;
  }
  /**
   * 设置值
   */
  @Override
  public void onBindViewHolder(final ViewHolder viewHolder, final int i)
  {
   viewHolder.mImg.setImageResource(mDatas.get(i));
  }
 }
}

 //得到控件
  recyclerview_horizontal1 = (RecyclerView)findViewById(R.id.recyclerview_horizontal1);
  //设置布局管理器
  LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
  linearLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
  recyclerview_horizontal1.setLayoutManager(linearLayoutManager);
  //设置适配器
  mAdapter1 = new GalleryAdapter(this, mDatas1);
  recyclerview_horizontal1.setAdapter(mAdapter1);