retrofit+xrecycleview展示数据

//依赖
 //缓解冲突
    implementation 'com.android.support:design:28.0.0'
    //xrecycleview
    implementation 'com.jcodecraeer:xrecyclerview:1.5.9'
    implementation 'com.facebook.fresco:fresco:0.14.1'
    implementation 'com.squareup.retrofit2:retrofit:2.5.0'
    implementation 'com.google.code.gson:gson:2.2.4'

//初始化
package com.example.rikao8;

import android.app.Application;

import com.facebook.drawee.backends.pipeline.Fresco;

/**
 * date:2018/12/6
 * author:霍钲杰(叮咯呤咚呛)
 * function:
 */
public class MyApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();

        Fresco.initialize(this);
    }
}

//主布局



    

//子布局





    

    

//网址类
package com.example.rikao8;

/**
 * date:2018/12/6
 * author:霍钲杰(叮咯呤咚呛)
 * function:
 */
public class Constance {
    public final static String url = "http://api.tianapi.com/";
}

//mainactivity
package com.example.rikao8;

import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;

import com.google.gson.Gson;
import com.jcodecraeer.xrecyclerview.XRecyclerView;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import okhttp3.Call;
import okhttp3.Response;
import okhttp3.ResponseBody;
import retrofit2.Callback;
import retrofit2.Retrofit;

public class MainActivity extends AppCompatActivity {

    private XRecyclerView xrecy;
    MyAdapter mAdapter;
    int page =1;
    private String mPage2;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        
        initData();

        getData();
        xrecy.setLayoutManager(new LinearLayoutManager(this));
    }

    private void getData() {
        xrecy.setLoadingListener(new XRecyclerView.LoadingListener() {
            @Override
            public void onRefresh() {//刷新监听
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        page=1;//起初page为1
                        initData();//加载数据
                        xrecy.refreshComplete();//提示刷新完成
                    }
                },2000);//设置刷新时间2000毫秒
            }

            @Override
            public void onLoadMore() {//上拉加载监听
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        //page+1
                        page++;
                        initData();//加载完数据
                        xrecy.loadMoreComplete();

                    }
                },2000);
            }
        });

    }

    private void initData() {

        mAdapter = new MyAdapter(MainActivity.this);

        Retrofit retrofit = new Retrofit.Builder().baseUrl(Constance.url).build();
        ServiceNba serviceNba = retrofit.create(ServiceNba.class);
        HashMap map = new HashMap<>();
        map.put("key", "71e58b5b2f930eaf1f937407acde08fe");
        map.put("num", "10");
        map.put("page", String.valueOf(page));
        retrofit2.Call call = serviceNba.getCall(map);
         call.enqueue(new Callback() {
             @Override
             public void onResponse(retrofit2.Call call, retrofit2.Response response) {
                if(response != null && response.isSuccessful()){
                    try {
                        String string = response.body().string();

                        NbaBean nbaBean = new Gson().fromJson(string, NbaBean.class);
                        if(page==1){
                            mAdapter.setData(nbaBean.getNewslist());
                        } else {
                            mAdapter.addData(nbaBean.getNewslist());
                        }


                        xrecy.setAdapter(mAdapter);

                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
             }

             @Override
             public void onFailure(retrofit2.Call call, Throwable t) {

             }
         });

    }

    private void initView() {
        xrecy = (XRecyclerView) findViewById(R.id.xrecy);
    }
}

//adapter
package com.example.rikao8;

import android.content.Context;
import android.net.Uri;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.facebook.drawee.view.SimpleDraweeView;
import com.jcodecraeer.xrecyclerview.XRecyclerView;

import java.util.ArrayList;
import java.util.List;

/**
 * date:2018/12/6
 * author:霍钲杰(叮咯呤咚呛)
 * function:
 */
public class MyAdapter extends XRecyclerView.Adapter {

    Context mContext;
    List list;

    public MyAdapter(Context context) {
        mContext = context;
        list = new ArrayList<>();
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = View.inflate(mContext,R.layout.xrecy_text,null);
        ViewHolder holder = new ViewHolder(view);
        return holder;

    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
            holder.text.setText(list.get(position).getTitle());
        Uri uri = Uri.parse(list.get(position).getPicUrl());
        holder.simple.setImageURI(uri);
    }

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

    public void setData(List newslist) {
        list = newslist;
        notifyDataSetChanged();
    }

    public void addData(List newslist) {
        list = newslist;
        notifyDataSetChanged();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {

        TextView text;
        SimpleDraweeView simple;
        public ViewHolder(View itemView) {
            super(itemView);
            text = itemView.findViewById(R.id.text);
            simple = itemView.findViewById(R.id.simple);
        }
    }
}

//创建接口
package com.example.rikao8;
import java.util.Map;

import okhttp3.ResponseBody;
import retrofit2.Call;
import retrofit2.http.GET;
import retrofit2.http.QueryMap;

/**
 * date:2018/12/6
 * author:霍钲杰(叮咯呤咚呛)
 * function:
 */
public interface ServiceNba {

    @GET("nba/")
    Call getCall(@QueryMap Map map);
}