XRecyclerView下拉刷新，加载更多，添加头布局

            

          XRecyclerView下拉刷新，加载更多，添加头布局

首先要导入一些依赖
 

compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'
compile files('libs/okhttp-3.9.0.jar')
compile files('libs/okio-1.13.0.jar')
compile files('libs/gson-2.2.4.jar')
compile files('libs/universal-image-loader-1.9.3.jar')
compile 'com.jcodecraeer:xrecyclerview:1.3.2'

记得要在清单里加网络权限和appliction.MyAppliction

主页面
MainActivity

import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.DividerItemDecoration;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.google.gson.Gson;
import com.jcodecraeer.xrecyclerview.ProgressStyle;
import com.jcodecraeer.xrecyclerview.XRecyclerView;
import com.nostra13.universalimageloader.core.ImageLoader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;

/**
 * 主页面
 */
public class MainActivity extends AppCompatActivity {
    int type=2;
    MyAdapter adapter;
    // RecyclerView rv;
    Maxs maxs;
    Max max;
    //御泥坊接口
    //  String str = "http://m.yunifang.com/yunifang/mobile/category/list?random=96333&encode=bf3386e14fe5bb0bcef234baebca2414";
    //周考二考试接口，用了拦截器，在Utils里OkHttp的封装里添加.addHeader("User-Agent","")，
    //拼接了拦截器的.addHeader("User-Agent","")才能解析出数据
       String str = "http://tingapi.ting.baidu.com/v1/restserver/ting?method=baidu.ting.billboard.billList&type="+type+"&size=20&offset=0";
    private XRecyclerView xRecyclerView;

     // boolean flag=true;
    Handler handler=new Handler();
     List list;
   // List list1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        list=new ArrayList();
        //找控件
      //  rv = (RecyclerView) findViewById(R.id.rv);

        xRecyclerView = (XRecyclerView) findViewById(R.id.rv);

        OkUrl();
        intitView();

    }


    //初始化布局管理器
    private void intitView() {
        //LinearLayoutManager布局样式
        LinearLayoutManager manager = new LinearLayoutManager(this);
        //  GridLayoutManager布局样式
        // GridLayoutManager manager = new GridLayoutManager(this, 2);
        //设置样式
        xRecyclerView.setLayoutManager(manager);
        //想要添加分割线，必须要写上这行代码
        xRecyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));
         //允许加载
        xRecyclerView.setLoadingMoreEnabled(true);
        //允许刷新
        xRecyclerView.setPullRefreshEnabled(true);

        //加载样式(加载进度的小圆圈)
        xRecyclerView.setLoadingMoreProgressStyle(ProgressStyle.Pacman);

        xRecyclerView.setLoadingListener(new XRecyclerView.LoadingListener() {
            //下拉刷新
            @Override
            public void onRefresh() {
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                       // flag = true;
                        type ++;
                        OkUrl();
                        //刷新适配器
                       // adapter.notifyDataSetChanged();
                        //刷新完成
                       xRecyclerView.refreshComplete();
                    }
                },3000);
            }
              //加载更多
            @Override
            public void onLoadMore() {
             handler.postDelayed(new Runnable() {
                 @Override
                 public void run() {
                    // flag = false;
                     type ++;
                     OkUrl();
                     //刷新适配器
                    // adapter.notifyDataSetChanged();
                      //刷新完成
                     xRecyclerView.refreshComplete();
                 }
             },3000);
            }
        });
    }

    //okhttp的网络请求
    private void OkUrl() {
        OkHttp3Utils.doGet(str, new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
              //请求失败
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                //解析
                Gson gson = new Gson();
                String strs = response.body().string();
                maxs = gson.fromJson(strs, Maxs.class);
                list=maxs.getSong_list();
             /*  if (flag){
                   list=maxs.getSong_list();
               }else {
                 list1=new ArrayList();
                  list1=list=maxs.getSong_list();
                  list1.addAll(list);

               }*/

                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        //创建适配器
                        adapter = new MyAdapter();
                        //设置适配器
                       xRecyclerView.setAdapter(adapter);
                        //添加头布局
                        TextView title=new TextView(MainActivity.this);
                        adapter.addHeader(title);
                        //刷新适配器
                        adapter.notifyDataSetChanged();
                    }
                });

            }
        });
    }

    //创建RecyclerView适配器

    class MyAdapter extends RecyclerView.Adapter {
          //设置type值
        public static final int TYPE_HEADER = 0;
        public static final int TYPE_ONE = 1;
          //把View放到集合里
       List listHeader = new ArrayList<>();
        //把view添加到listHeader里
        public void addHeader(View view) {
            listHeader.add(view);
        }

        @Override
        public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            //加载头布局  R.layout.head
            if (viewType == TYPE_HEADER) {
                View view = View.inflate(MainActivity.this, R.layout.head, null);
                MyHeaderHolder holderHead = new MyHeaderHolder(view);
                return holderHead;
            } else {
                //加载条目布局   R.layout.item
                View view = View.inflate(MainActivity.this, R.layout.item, null);
                MyViewHolder holder = new MyViewHolder(view);
                return holder;
            }

        }

        @Override
        public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
            //给MyHeaderHolder头布局控件赋值
            if (holder instanceof MyHeaderHolder) {
                ((MyHeaderHolder) holder).headtv.setText(maxs.getBillboard().getName());
                //加载图片
               ImageLoader.getInstance().displayImage(maxs.getBillboard().getPic_s444(), ((MyHeaderHolder) holder).headiv);
            }
           //给MyViewHolder控件赋值
            if (holder instanceof MyViewHolder) {
                ((MyViewHolder) holder).tv.setText(maxs.getSong_list().get(position).getTitle());
                 //加载图片
                ImageLoader.getInstance().displayImage(maxs.getSong_list().get(position).getPic_small(), ((MyViewHolder) holder).iv);
            }

        }

        @Override
        public int getItemCount() {
            //返回条目数量
            return maxs.getSong_list()==null ? 0:maxs.getSong_list().size();
        }

        //多条目类型条数
        @Override
        public int getItemViewType(int position) {
            if (position

/**
* OkHttp的封装类
*/
 

public class OkHttp3Utils {

private static OkHttpClient okHttpClient = null;

public OkHttp3Utils() {
}

private static OkHttpClient getOkHttpClient() {
synchronized (OkHttp3Utils.class) {
if (okHttpClient == null) {
okHttpClient = new OkHttpClient();
}
}
return okHttpClient;
}

//上传文件
public static void loadFile(String url, File file,String fileName){
OkHttpClient okHttpClient = getOkHttpClient();
//设置文件类型
RequestBody requestBody = RequestBody.create(MediaType.parse("application/octet-stream"),file);
//设置请求体
RequestBody body = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("image",fileName,requestBody)
.build();
//请求方式
Request request = new Request.Builder().url(url).post(body).build();

okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {

}

@Override
public void onResponse(Call call, Response response) throws IOException {
Log.i("成功","成功");
}
});
}

/**
* 1.接口地址
* 2.接口回调
*/
public static void doGet(String url,Callback callback){
OkHttpClient okHttpClient = getOkHttpClient();
//使用了拦截器，拼接了拦截器的.addHeader("User-Agent","")才能解析出数据
Request request = new Request.Builder().addHeader("User-Agent","").url(url).build();
okHttpClient.newCall(request).enqueue(callback);
}

/**
* 1.地址
* 2.接口回调
* 3.请求体
*/

public static void doPost(String url, Map map,Callback callback){
OkHttpClient okHttpClient = getOkHttpClient();
FormBody.Builder builder = new FormBody.Builder();
//遍历map集合 设置请求体
for (String mapKey : map.keySet()){
builder.add(mapKey,map.get(mapKey));
}
//设置请求方式
Request request = new Request.Builder().url(url).post(builder.build()).build();
//执行请求方式 接口回调
okHttpClient.newCall(request).enqueue(callback);
}

/**
*1.下载地址
*/
public static void doDown(String url,Callback callback){
OkHttpClient okHttpClient = getOkHttpClient();
Request build = new Request.Builder().url(url).build();

okHttpClient.newCall(build).enqueue(callback);
}
}

网络拦截器
 

import android.os.Build;
import java.io.IOException;
import okhttp3.Interceptor;
import okhttp3.Request;
import okhttp3.Response;
/**
* 网络拦截器
*/

public class LoggingInterceptor implements Interceptor {
private static final String UA = "User-Agent";

@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request()
.newBuilder()
.addHeader(UA, makeUA())
.build();
return chain.proceed(request);
}

private String makeUA() {
String s = Build.BRAND + "/" + Build.MODEL + "/" + Build.VERSION.RELEASE;
return Build.BRAND + "/" + Build.MODEL + "/" + Build.VERSION.RELEASE;
}

}

Application

import android.app.Application;
import com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiscCache;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import java.io.File;

/**
*
* 初始化 ImageLoader
*/
public class MyAppliction extends Application {
@Override
public void onCreate() {
super.onCreate();
// ImageLoaderConfiguration cofn = ImageLoaderConfiguration.createDefault(this);
//ImageLoader.getInstance().init(cofn);
//指定路径
File file = this.getCacheDir();

//缓存到SD卡上
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder( this)

// 自定义缓存路径
.diskCache(new UnlimitedDiscCache(file))
.build();
ImageLoader.getInstance().init(config);


}
}

布局

Mainactivity布局

head头布局

item布局

Bean类

 
import java.util.List;

/**
 *  Bean类，解析的数据
 */
public class Maxs {

    /**
     * billboard_type : 1
     * billboard_no : 2349
     * update_date : 2017-10-16
     * billboard_songnum : 146
     * havemore : 1
     * name : 新歌榜
     * comment : 该榜单是根据百度音乐平台歌曲每日播放量自动生成的数据榜单，统计范围为近期发行的歌曲，每日更新一次
     * pic_s192 : http://b.hiphotos.baidu.com/ting/pic/item/9922720e0cf3d7caf39ebc10f11fbe096b63a968.jpg
     * pic_s640 : http://c.hiphotos.baidu.com/ting/pic/item/f7246b600c33874495c4d089530fd9f9d62aa0c6.jpg
     * pic_s444 : http://d.hiphotos.baidu.com/ting/pic/item/78310a55b319ebc4845c84eb8026cffc1e17169f.jpg
     * pic_s260 : http://b.hiphotos.baidu.com/ting/pic/item/e850352ac65c1038cb0f3cb0b0119313b07e894b.jpg
     * pic_s210 : http://business.cdn.qianqian.com/qianqian/pic/bos_client_c49310115801d43d42a98fdc357f6057.jpg
     * web_url : http://music.baidu.com/top/new
     */

    private BillboardEntity billboard;
    

    private int error_code;
    /**
     * artist_id : 310838090
     * language : 国语
     * pic_big : http://musicdata.baidu.com/data2/pic/3b9383fd29bbf5ff3dd2b2e66fbf19be/559880021/559880021.jpg@s_1,w_150,h_150
     * pic_small : http://musicdata.baidu.com/data2/pic/3b9383fd29bbf5ff3dd2b2e66fbf19be/559880021/559880021.jpg@s_1,w_90,h_90
     * country : 内地
     * area : 0
     * publishtime : 2017-10-11
     * album_no : 3
     * lrclink : http://musicdata.baidu.com/data2/lrc/74da30df7989ef0957094446e178d602/557893656/557893656.lrc
     * copy_type : 1
     * hot : 130322
     * all_artist_ting_uid : 239907481
     * resource_type : 0
     * is_new : 1
     * rank_change : 0
     * rank : 1
     * all_artist_id : 310838090
     * style :
     * del_status : 0
     * relate_status : 0
     * toneid : 0
     * all_rate : 64,128,256,320,flac
     * file_duration : 266
     * has_mv_mobile : 0
     * versions :
     * bitrate_fee : {"0":"0|0","1":"0|0"}
     * biaoshi : first,lossless
     * info :
     * has_filmtv : 0
     * si_proxycompany : 华宇世博音乐文化（北 京）有限公司-普通代理
     * song_id : 557631688
     * title : 三角题
     * ting_uid : 239907481
     * author : 二珂
     * album_id : 555678187
     * album_title : 带着音乐去旅行
     * is_first_publish : 0
     * havehigh : 2
     * charge : 0
     * has_mv : 1
     * learn : 0
     * song_source : web
     * piao_id : 0
     * korean_bb_song : 0
     * resource_type_ext : 0
     * mv_provider : 0000000000
     * artist_name : 二珂
     */

    private List song_list;

    public void setBillboard(BillboardEntity billboard) {
        this.billboard = billboard;
    }

    public void setError_code(int error_code) {
        this.error_code = error_code;
    }

    public void setSong_list(List song_list) {
        this.song_list = song_list;
    }

    public BillboardEntity getBillboard() {
        return billboard;
    }

    public int getError_code() {
        return error_code;
    }

    public List getSong_list() {
        return song_list;
    }

    public static class BillboardEntity {
        private String billboard_type;
        private String billboard_no;
        private String update_date;
        private String billboard_songnum;
        private int havemore;
        private String name;
        private String comment;
        private String pic_s192;
        private String pic_s640;
        private String pic_s444;
        private String pic_s260;
        private String pic_s210;
        private String web_url;

        public void setBillboard_type(String billboard_type) {
            this.billboard_type = billboard_type;
        }

        public void setBillboard_no(String billboard_no) {
            this.billboard_no = billboard_no;
        }

        public void setUpdate_date(String update_date) {
            this.update_date = update_date;
        }

        public void setBillboard_songnum(String billboard_songnum) {
            this.billboard_songnum = billboard_songnum;
        }

        public void setHavemore(int havemore) {
            this.havemore = havemore;
        }

        public void setName(String name) {
            this.name = name;
        }

        public void setComment(String comment) {
            this.comment = comment;
        }

        public void setPic_s192(String pic_s192) {
            this.pic_s192 = pic_s192;
        }

        public void setPic_s640(String pic_s640) {
            this.pic_s640 = pic_s640;
        }

        public void setPic_s444(String pic_s444) {
            this.pic_s444 = pic_s444;
        }

        public void setPic_s260(String pic_s260) {
            this.pic_s260 = pic_s260;
        }

        public void setPic_s210(String pic_s210) {
            this.pic_s210 = pic_s210;
        }

        public void setWeb_url(String web_url) {
            this.web_url = web_url;
        }

        public String getBillboard_type() {
            return billboard_type;
        }

        public String getBillboard_no() {
            return billboard_no;
        }

        public String getUpdate_date() {
            return update_date;
        }

        public String getBillboard_songnum() {
            return billboard_songnum;
        }

        public int getHavemore() {
            return havemore;
        }

        public String getName() {
            return name;
        }

        public String getComment() {
            return comment;
        }

        public String getPic_s192() {
            return pic_s192;
        }

        public String getPic_s640() {
            return pic_s640;
        }

        public String getPic_s444() {
            return pic_s444;
        }

        public String getPic_s260() {
            return pic_s260;
        }

        public String getPic_s210() {
            return pic_s210;
        }

        public String getWeb_url() {
            return web_url;
        }
    }

    public static class SongListEntity {
        private String artist_id;
        private String language;
        private String pic_big;
        private String pic_small;
        private String country;
        private String area;
        private String publishtime;
        private String album_no;
        private String lrclink;
        private String copy_type;
        private String hot;
        private String all_artist_ting_uid;
        private String resource_type;
        private String is_new;
        private String rank_change;
        private String rank;
        private String all_artist_id;
        private String style;
        private String del_status;
        private String relate_status;
        private String toneid;
        private String all_rate;
        private int file_duration;
        private int has_mv_mobile;
        private String versions;
        private String bitrate_fee;
        private String biaoshi;
        private String info;
        private String has_filmtv;
        private String si_proxycompany;
        private String song_id;
        private String title;
        private String ting_uid;
        private String author;
        private String album_id;
        private String album_title;
        private int is_first_publish;
        private int havehigh;
        private int charge;
        private int has_mv;
        private int learn;
        private String song_source;
        private String piao_id;
        private String korean_bb_song;
        private String resource_type_ext;
        private String mv_provider;
        private String artist_name;

        public void setArtist_id(String artist_id) {
            this.artist_id = artist_id;
        }

        public void setLanguage(String language) {
            this.language = language;
        }

        public void setPic_big(String pic_big) {
            this.pic_big = pic_big;
        }

        public void setPic_small(String pic_small) {
            this.pic_small = pic_small;
        }

        public void setCountry(String country) {
            this.country = country;
        }

        public void setArea(String area) {
            this.area = area;
        }

        public void setPublishtime(String publishtime) {
            this.publishtime = publishtime;
        }

        public void setAlbum_no(String album_no) {
            this.album_no = album_no;
        }

        public void setLrclink(String lrclink) {
            this.lrclink = lrclink;
        }

        public void setCopy_type(String copy_type) {
            this.copy_type = copy_type;
        }

        public void setHot(String hot) {
            this.hot = hot;
        }

        public void setAll_artist_ting_uid(String all_artist_ting_uid) {
            this.all_artist_ting_uid = all_artist_ting_uid;
        }

        public void setResource_type(String resource_type) {
            this.resource_type = resource_type;
        }

        public void setIs_new(String is_new) {
            this.is_new = is_new;
        }

        public void setRank_change(String rank_change) {
            this.rank_change = rank_change;
        }

        public void setRank(String rank) {
            this.rank = rank;
        }

        public void setAll_artist_id(String all_artist_id) {
            this.all_artist_id = all_artist_id;
        }

        public void setStyle(String style) {
            this.style = style;
        }

        public void setDel_status(String del_status) {
            this.del_status = del_status;
        }

        public void setRelate_status(String relate_status) {
            this.relate_status = relate_status;
        }

        public void setToneid(String toneid) {
            this.toneid = toneid;
        }

        public void setAll_rate(String all_rate) {
            this.all_rate = all_rate;
        }

        public void setFile_duration(int file_duration) {
            this.file_duration = file_duration;
        }

        public void setHas_mv_mobile(int has_mv_mobile) {
            this.has_mv_mobile = has_mv_mobile;
        }

        public void setVersions(String versions) {
            this.versions = versions;
        }

        public void setBitrate_fee(String bitrate_fee) {
            this.bitrate_fee = bitrate_fee;
        }

        public void setBiaoshi(String biaoshi) {
            this.biaoshi = biaoshi;
        }

        public void setInfo(String info) {
            this.info = info;
        }

        public void setHas_filmtv(String has_filmtv) {
            this.has_filmtv = has_filmtv;
        }

        public void setSi_proxycompany(String si_proxycompany) {
            this.si_proxycompany = si_proxycompany;
        }

        public void setSong_id(String song_id) {
            this.song_id = song_id;
        }

        public void setTitle(String title) {
            this.title = title;
        }

        public void setTing_uid(String ting_uid) {
            this.ting_uid = ting_uid;
        }

        public void setAuthor(String author) {
            this.author = author;
        }

        public void setAlbum_id(String album_id) {
            this.album_id = album_id;
        }

        public void setAlbum_title(String album_title) {
            this.album_title = album_title;
        }

        public void setIs_first_publish(int is_first_publish) {
            this.is_first_publish = is_first_publish;
        }

        public void setHavehigh(int havehigh) {
            this.havehigh = havehigh;
        }

        public void setCharge(int charge) {
            this.charge = charge;
        }

        public void setHas_mv(int has_mv) {
            this.has_mv = has_mv;
        }

        public void setLearn(int learn) {
            this.learn = learn;
        }

        public void setSong_source(String song_source) {
            this.song_source = song_source;
        }

        public void setPiao_id(String piao_id) {
            this.piao_id = piao_id;
        }

        public void setKorean_bb_song(String korean_bb_song) {
            this.korean_bb_song = korean_bb_song;
        }

        public void setResource_type_ext(String resource_type_ext) {
            this.resource_type_ext = resource_type_ext;
        }

        public void setMv_provider(String mv_provider) {
            this.mv_provider = mv_provider;
        }

        public void setArtist_name(String artist_name) {
            this.artist_name = artist_name;
        }

        public String getArtist_id() {
            return artist_id;
        }

        public String getLanguage() {
            return language;
        }

        public String getPic_big() {
            return pic_big;
        }

        public String getPic_small() {
            return pic_small;
        }

        public String getCountry() {
            return country;
        }

        public String getArea() {
            return area;
        }

        public String getPublishtime() {
            return publishtime;
        }

        public String getAlbum_no() {
            return album_no;
        }

        public String getLrclink() {
            return lrclink;
        }

        public String getCopy_type() {
            return copy_type;
        }

        public String getHot() {
            return hot;
        }

        public String getAll_artist_ting_uid() {
            return all_artist_ting_uid;
        }

        public String getResource_type() {
            return resource_type;
        }

        public String getIs_new() {
            return is_new;
        }

        public String getRank_change() {
            return rank_change;
        }

        public String getRank() {
            return rank;
        }

        public String getAll_artist_id() {
            return all_artist_id;
        }

        public String getStyle() {
            return style;
        }

        public String getDel_status() {
            return del_status;
        }

        public String getRelate_status() {
            return relate_status;
        }

        public String getToneid() {
            return toneid;
        }

        public String getAll_rate() {
            return all_rate;
        }

        public int getFile_duration() {
            return file_duration;
        }

        public int getHas_mv_mobile() {
            return has_mv_mobile;
        }

        public String getVersions() {
            return versions;
        }

        public String getBitrate_fee() {
            return bitrate_fee;
        }

        public String getBiaoshi() {
            return biaoshi;
        }

        public String getInfo() {
            return info;
        }

        public String getHas_filmtv() {
            return has_filmtv;
        }

        public String getSi_proxycompany() {
            return si_proxycompany;
        }

        public String getSong_id() {
            return song_id;
        }

        public String getTitle() {
            return title;
        }

        public String getTing_uid() {
            return ting_uid;
        }

        public String getAuthor() {
            return author;
        }

        public String getAlbum_id() {
            return album_id;
        }

        public String getAlbum_title() {
            return album_title;
        }

        public int getIs_first_publish() {
            return is_first_publish;
        }

        public int getHavehigh() {
            return havehigh;
        }

        public int getCharge() {
            return charge;
        }

        public int getHas_mv() {
            return has_mv;
        }

        public int getLearn() {
            return learn;
        }

        public String getSong_source() {
            return song_source;
        }

        public String getPiao_id() {
            return piao_id;
        }

        public String getKorean_bb_song() {
            return korean_bb_song;
        }

        public String getResource_type_ext() {
            return resource_type_ext;
        }

        public String getMv_provider() {
            return mv_provider;
        }

        public String getArtist_name() {
            return artist_name;
        }
    }
}