RecyclerView的基本使用

1、布局文件中使用

  <android.support.v7.widget.RecyclerView
         android:id="@+id/recycleview"
         android:paddingLeft="10dp"
         android:paddingRight="10dp"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:gravity="center">
     </android.support.v7.widget.RecyclerView>

2、代码中使用

   recyclerView = (RecyclerView)findViewById(R.id.recycleview);
   recyclerView.setLayoutManager(new GridLayoutManager(getActivity(), 4)) ;   //gridView网格布局
   recyclerView.setLayoutManager(new LinearLayoutManager(this));              //listView线性布局

3、适配器

 package com.yiba.files.adapter;

 import android.content.Context;
 import android.graphics.drawable.BitmapDrawable;
 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.yiba.files.R;
 import com.yiba.files.model.DataItem;
 import com.yiba.files.util.DensityUtils;
 import com.yiba.files.util.DeviceUtils;

 import java.util.List;

 /**
  * Created by ${zyj} on 2016/1/23.
  */
 public class AppAdapter extends RecyclerView.Adapter<AppAdapter.MyViewHolder> {
     private Context context;
     private List<DataItem> list;
     private RelativeLayout.LayoutParams params;

     public interface OnItemClickListener {
         void onItemClick(View view, int position);
     }

     private OnItemClickListener onItemClickListener;

     public void setOnItemClickListener(OnItemClickListener listener) {
         onItemClickListener = listener;
     }

     public AppAdapter(Context context, List<DataItem> list) {
         this.context = context;
         this.list = list;
     }

     @Override
     public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
         MyViewHolder holder = new MyViewHolder(LayoutInflater.from(context).inflate(
                 R.layout.fragment_app_item, null));
         return holder;
     }

     @Override
     public void onBindViewHolder(final MyViewHolder holder,
                                  final int position) {
         DataItem info = list.get(position);
         String tag = (String) holder.imageView.getTag();

         if (!info.getName().equals(tag)) {
             holder.imageView.setImageBitmap(((BitmapDrawable) list.get(position)
                     .getImage()).getBitmap());
             holder.imageView.setTag(info.getName());
         }

         if (info.isSelect()) {
             holder.imageView.setAlpha(0.3f);
             holder.appName.setAlpha(0.3f);
             holder.appSize.setAlpha(0.3f);
             holder.app_choice.setVisibility(View.VISIBLE);
         } else {
             holder.imageView.setAlpha(1.0f);
             holder.appName.setAlpha(1.0f);
             holder.appSize.setAlpha(1.0f);
             holder.app_choice.setVisibility(View.GONE);
         }

         holder.appName.setText(info.getDisplayName());
         holder.appSize.setText("" + DeviceUtils.convertByte(info.getSize()));

         holder.itemView.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 if (onItemClickListener != null) {
                     int pos = holder.getLayoutPosition();
                     onItemClickListener.onItemClick(holder.itemView, pos);
                 }
             }
         });
     }

     @Override
     public int getItemCount() {
         if (list != null) {
             return list.size();
         } else {
             return 0;
         }
     }

     public DataItem getItem(int position) {
         return list.get(position);
     }

     class MyViewHolder extends RecyclerView.ViewHolder {
         ImageView imageView;
         ImageView app_choice;
         TextView appName;
         TextView appSize;

         public MyViewHolder(View view) {
             super(view);
             imageView = (ImageView) view.findViewById(R.id.appImage);

             params = (RelativeLayout.LayoutParams) imageView.getLayoutParams();
             params.width = DensityUtils.getScreenWidth(context) / 6;
             params.height = params.width;
             imageView.setLayoutParams(params);

             appName = (TextView) view.findViewById(R.id.appName);
             appSize = (TextView) view.findViewById(R.id.appSize);
             app_choice = (ImageView) view.findViewById(R.id.appSelect_image);
         }
     }
 }

更新数据

http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2014/1118/2004.html