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