XRecyclerView上拉刷新下拉加载

首先要添加依赖：

//xrecyclerview
implementation 'com.jcodecraeer:xrecyclerview:1.3.2'
//Gson
implementation 'com.google.code.gson:gson:2.2.4'
//okhttputils
implementation 'com.zhy:okhttputils:2.0.0'

权限：

<uses-permission android:name="android.permission.INTERNET" />

布局：

    <com.jcodecraeer.xrecyclerview.XRecyclerView
        android:id="@+id/RV_all"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </com.jcodecraeer.xrecyclerview.XRecyclerView>

All_Fragment：

public class All_Fragment extends Fragment {


    private XRecyclerView RV_all;//XRecyclerView
    private int i=0;//页数
    private Adapter_All adapter_all;//适配器
    private ArrayList<Bean_All.MessageBean.AnchorsBean> data;//把获取的数据放到集合里
    private int con=0;//判断con是否等于0等于0就执行适配器和瀑布流con不等于0就刷新界面

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View inflate = inflater.inflate(R.layout.fragment_all_, container, false);
        initView(inflate);
        data = new ArrayList<>();
        //okhttp解析
        okhttp(i);
        return inflate;
    }
    private void okhttp(final int i) {
        OkHttpUtils.get()
                .url(Cans.HOME_PAGE + "" + i + "&index=0")//地址
                .build().execute(new StringCallback() {
            @Override
            public void onError(Request request, Exception e) {
                Log.e("Song-All-onError", request + "");
            }
            @Override
            public void onResponse(String response) {
                Log.e("Song-All-onResponse", response + "");
                //解析所有数据
                all(response);
            }
        });
    }
    //解析所有数据
    private void all(String response) {
        //Gson解析
        Gson gson = new Gson();
        //获取Bean类的数据
        Bean_All bean_all = gson.fromJson(response, Bean_All.class);
        final List<Bean_All.MessageBean.AnchorsBean> anchors = bean_all.getMessage().getAnchors();
        //把Bean类获取的数据放到集合中
        data.addAll(anchors);
        //判断con是否等于0等于0就执行适配器和瀑布流con不等于0就刷新界面
        if (con == 0){
            //瀑布流
            RV_all.setLayoutManager(new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL));
            //适配器
            adapter_all = new Adapter_All(data, getActivity());
            //添加适配器
            RV_all.setAdapter(adapter_all);
        }else {
            adapter_all.notifyDataSetChanged();//刷新界面
        }


        //XRecyclerView的点击事件
        adapter_all.setmOnItemListener(new Adapter_RecyclerView.OnItemListener() {
            @Override
            public void onItemClick(int position) {
                //Intent跳转
                Intent intent = new Intent(getActivity(), All_Activity.class);
                intent.putExtra("roomid", data.get(position).getRoomid());
                startActivity(intent);
            }
        });



        /**
         *设定下拉刷新和上拉加载监听
         */
        RV_all.setLoadingListener(new XRecyclerView.LoadingListener() {
            //上拉加载监听
            @Override
            public void onLoadMore() {
                      i++;//上拉加载添加数据
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        con=1;//con不等于0就执行上啦加载
                        okhttp(i);//okhttp解析数据
                        RV_all.loadMoreComplete();    //加载数据完成（取消加载动画）
                    }
                },2000);
            }
            //下拉刷新监听
            @Override
            public void onRefresh() {
                //清除集合
                data.clear();
                okhttp(0);//初始化数据
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        adapter_all.notifyDataSetChanged();//刷新界面
                        RV_all.refreshComplete();     //刷新数据完成（取消刷新动画）
                    }
                },2000);
            }
        });

    }
    private void initView(View inflate) {
        RV_all = (XRecyclerView) inflate.findViewById(R.id.RV_all);
    }
}

适配器：

public class Adapter_All extends XRecyclerView.Adapter<Adapter_All.ViewHolder>{
    private List<Bean_All.MessageBean.AnchorsBean> list;
    private Context context;

    public Adapter_All(List<Bean_All.MessageBean.AnchorsBean> list, Context context) {
        this.list = list;
        this.context = context;
    }

    @Override
    public Adapter_All.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View inflate = LayoutInflater.from(context).inflate(R.layout.layout_all, parent, false);
        ViewHolder viewHolder = new ViewHolder(inflate);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(Adapter_All.ViewHolder holder, int position) {
        Glide.with(context).load(list.get(position).getPic74()).into(holder.img_all);
        holder.tv_name.setText(list.get(position).getName());
        holder.tv_online.setText(""+list.get(position).getFocus()+"人");
    }

    @Override
    public int getItemCount() {
        return list == null ? 0 : list.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {

        private final ImageView img_all;
        private final TextView tv_name;
        private final TextView tv_online;

        public ViewHolder(View itemView) {
            super(itemView);
            img_all = itemView.findViewById(R.id.img_all);
            tv_name = itemView.findViewById(R.id.tv_name);
            tv_online = itemView.findViewById(R.id.tv_online);
            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    if (mOnItemListener!=null){
                        mOnItemListener.onItemClick(getPosition());
                    }
                }
            });
        }
    }
    public interface OnItemListener{
        void onItemClick(int position);
    }
    public Adapter_RecyclerView.OnItemListener mOnItemListener;
    public void setmOnItemListener(Adapter_RecyclerView.OnItemListener mOnItemListener){
        this.mOnItemListener = mOnItemListener;
    }
}