xRecyclerView刷新

//MainActivity  的代码

package com.example.x;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import com.jcodecraeer.xrecyclerview.ProgressStyle;
import com.jcodecraeer.xrecyclerview.XRecyclerView;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class MainActivity extends AppCompatActivity {

    private XRecyclerView xrv;
    private int i;
    private XRaDAPTER adapter;
    private List<Bean.SongListBean> list;
    private Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        xrv =(XRecyclerView)findViewById(R.id.xrv);
        //设置上拉
        xrv.setPullRefreshEnabled(true);
        xrv.setLoadingMoreEnabled(true);
        xrv.setRefreshProgressStyle(ProgressStyle.BallSpinFadeLoader);
        xrv.setLaodingMoreProgressStyle(ProgressStyle.BallClipRotate);

        //设置监听
        xrv.setLoadingListener(new XRecyclerView.LoadingListener() {
            @Override
            public void onRefresh() {
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        i=0;
                        list.clear();
                        loaddata(i);
                        adapter.notifyDataSetChanged();
                        xrv.refreshComplete();
                    }
                },3000);
            }

            @Override
            public void onLoadMore() {
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        i++;
                        loaddata(i);
                        list.addAll(list);
                        xrv.loadMoreComplete();
                    }
                },3000);

            }
        });
        //创建数据集合
        loaddata(i);
    }
    private void loaddata(int i){
        Map<String, String> map = new HashMap<>();
        HttpUtils.getInstance().get("http://tingapi.ting.baidu.com/v1/restserver/ting?method=baidu.ting.billboard.billList&type=1&size=10&offset=" + i, map, new CallBack() {

            @Override
            public void onSuccess(Object o) {
                Bean bean=(Bean) o;
                list = bean.getSong_list();
                //添加适配器
                adapter = new XRaDAPTER(MainActivity.this, list);
                xrv.setAdapter(adapter);
                LinearLayoutManager manager = new LinearLayoutManager(MainActivity.this,LinearLayoutManager.VERTICAL,false);
                xrv.setLayoutManager(manager);

            }
            @Override
            public void onFailed(Exception e) {

            }
        },Bean.class);
    }
}

////////////////////////////////适配器

package com.example.x;
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import java.util.List;

/**
 * Created by on 2017/11/12.
 */

public class XRaDAPTER extends RecyclerView.Adapter<XRaDAPTER.ViewHolder> {

    private Context context;
    private List<Bean.SongListBean>  list;

    public XRaDAPTER(Context context, List<Bean.SongListBean> list) {
        this.context = context;
        this.list = list;
    }

    class ViewHolder extends RecyclerView.ViewHolder{

        private final ImageView img;
        private final TextView tv;

        public ViewHolder(View itemView) {
            super(itemView);
            img =(ImageView)itemView.findViewById(R.id.img);
            tv=(TextView)itemView.findViewById(R.id.tv);
        }
    }
    @Override
    public XRaDAPTER.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View inflate = View.inflate(context, R.layout.item, null);
        ViewHolder holder = new ViewHolder(inflate);
        return holder;
    }

    @Override
    public void onBindViewHolder(XRaDAPTER.ViewHolder holder, int position) {
        Glide.with(context).load(list.get(position).getPic_big()).into(holder.img);
        holder.tv.setText(list.get(position).getTitle());
    }

    @Override
    public int getItemCount() {
        return list.size();
    }
}