Retrofit+RecyclerView+SwipeRefreshlayout实现上拉刷新和分页加载

来源：互联网发布：现在淘宝店铺免费吗? 编辑：程序博客网时间：2024/05/20 23:33

使用Retrofit+RecyclerView+Swiperefreshlayout实现分页加载数据，包括上拉刷新和下拉加载更多。
demo中的api参考地址
http://gank.io/api/data/福利/5/1
用到的知识点：

Retrofit实现网络请求
Recyclerview列表
Swiperefreshlayout实现下拉刷新，上拉加载更多
加载图片用Glide

项目目录结构
这里写图片描述

运行效果图
这里写图片描述

1、依赖

  compile 'com.squareup.retrofit2:retrofit:2.0.1'    compile 'com.squareup.retrofit2:converter-gson:2.0.1'    compile 'com.github.bumptech.glide:glide:3.7.0'

2、retorfit的API配置

public interface Api {    //http://gank.io/api/data/福利/5/1    @GET("api/data/福利/{pageCount}/{pageIndex}")    Call<DataInfo> getData(@Path("pageCount") int pageCount,                 @Path("pageIndex") int pageIndex);}

3、google自带的Swiperefreshlayout只有下拉刷新，通过对代码配置，加入下拉加载更多

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:my="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:fitsSystemWindows="true"    tools:context="com.example.administrator.retrofit.MainActivity">    <com.example.administrator.retrofit.pull.SwipyRefreshLayout        android:id="@+id/refreshLayout"        android:layout_width="match_parent"        android:layout_height="match_parent"        my:direction="both">        <android.support.v7.widget.RecyclerView            android:id="@+id/recyerview"            android:layout_width="match_parent"            android:layout_height="match_parent" />    </com.example.administrator.retrofit.pull.SwipyRefreshLayout></LinearLayout>

4、请求返回

{  "error": false,   "results": [    {      "_id": "5817e1fa421aa913769745fe",       "createdAt": "2016-11-01T08:29:46.640Z",       "desc": "11-1",       "publishedAt": "2016-11-01T11:46:01.617Z",       "source": "chrome",       "type": "\u798f\u5229",       "url": "http://ww1.sinaimg.cn/large/610dc034jw1f9cayjaa96j20u011hqbs.jpg",       "used": true,       "who": "daimajia"    },     {      "_id": "5816871a421aa91369f959b6",       "createdAt": "2016-10-31T07:49:46.592Z",       "desc": "10-31",       "publishedAt": "2016-10-31T11:43:44.770Z",       "source": "chrome",       "type": "\u798f\u5229",       "url": "http://ww2.sinaimg.cn/large/610dc034jw1f9b46kpoeoj20ku0kuwhc.jpg",       "used": true,       "who": "daimajia"    },     {      "_id": "581218e9421aa90e799ec222",       "createdAt": "2016-10-27T23:10:33.618Z",       "desc": "10-28",       "publishedAt": "2016-10-28T11:29:36.510Z",       "source": "chrome",       "type": "\u798f\u5229",       "url": "http://ww2.sinaimg.cn/large/610dc034jw1f978bh1cerj20u00u0767.jpg",       "used": true,       "who": "daimajia"    },     {      "_id": "5811596a421aa90e6f21b45e",       "createdAt": "2016-10-27T09:33:30.47Z",       "desc": "10-27",       "publishedAt": "2016-10-27T11:41:45.88Z",       "source": "chrome",       "type": "\u798f\u5229",       "url": "http://ww4.sinaimg.cn/large/610dc034gw1f96kp6faayj20u00jywg9.jpg",       "used": true,       "who": "daimajia"    },     {      "_id": "58101f83421aa90e6f21b44b",       "createdAt": "2016-10-26T11:14:11.143Z",       "desc": "10-26",       "publishedAt": "2016-10-26T11:28:10.759Z",       "source": "chrome",       "type": "\u798f\u5229",       "url": "http://ww4.sinaimg.cn/large/610dc034jw1f95hzq3p4rj20u011htbm.jpg",       "used": true,       "who": "daimajia"    }  ]}

Bean类

public class DataInfo {    public String error;    public ArrayList<Info> results;    public class Info{        public String _id;        public String url;    }}

4、activity中的代码

package com.example.administrator.retrofit;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.util.Log;import android.view.View;import android.widget.Toast;import com.example.administrator.retrofit.pull.SwipyRefreshLayout;import java.util.ArrayList;import api.Api;import bean.DataInfo;import retrofit2.Call;import retrofit2.Callback;import retrofit2.Response;import retrofit2.Retrofit;import retrofit2.converter.gson.GsonConverterFactory;import static com.example.administrator.retrofit.R.id.recyerview;public class MainActivity extends AppCompatActivity implements MyAdapter.OnRecyclerViewItemClickListener,SwipyRefreshLayout.OnRefreshListener {    private ArrayList<DataInfo.Info> arrayList;    private RecyclerView recyclerView;    private MyAdapter adapter;    private SwipyRefreshLayout refreshLayout;    private LinearLayoutManager linearLayoutManager;    private int pages=1;    private final int TOP_REFRESH = 1;    private final int BOTTOM_REFRESH = 2;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        recyclerView= (RecyclerView) findViewById(recyerview);        refreshLayout= (SwipyRefreshLayout) findViewById(R.id.refreshLayout);        refreshLayout.setOnRefreshListener(this);        arrayList=new ArrayList();        initData(1);        linearLayoutManager=new LinearLayoutManager(this);        linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);        recyclerView.setLayoutManager(linearLayoutManager);        adapter=new MyAdapter(this,arrayList);        adapter.setOnItemClickListener(this);        recyclerView.setAdapter(adapter);    }    private void initData(int pages) {        //使用retrofit配置api        Retrofit retrofit=new Retrofit.Builder()                .baseUrl("http://gank.io/")                .addConverterFactory(GsonConverterFactory.create())                .build();        Api api =retrofit.create(Api.class);        Call<DataInfo> call=api.getData(5,pages);        call.enqueue(new Callback<DataInfo>() {            @Override            public void onResponse(Call<DataInfo> call, Response<DataInfo> response) {                arrayList.addAll(response.body().results);                adapter.notifyDataSetChanged();                Log.i("aaaa", arrayList.size() + "");                refreshLayout.setRefreshing(false);            }            @Override            public void onFailure(Call<DataInfo> call, Throwable t) {                refreshLayout.setRefreshing(false);            }        });    }    @Override    public void onItemClick(View view, DataInfo.Info data) {        Toast.makeText(MainActivity.this, "click item " + data, Toast.LENGTH_SHORT).show();    }    @Override    public void onRefresh(int index) {        dataOption(TOP_REFRESH);        Toast.makeText(this,"已经是最新数据",Toast.LENGTH_SHORT).show();    }    @Override    public void onLoad(int index) {        dataOption(BOTTOM_REFRESH);        Toast.makeText(this,"加载完成",Toast.LENGTH_SHORT).show();    }    private void dataOption(int option){        switch (option) {            case TOP_REFRESH:                //下拉刷新                arrayList.clear();                initData(1);                break;            case BOTTOM_REFRESH:                //上拉加载更多                pages++;                initData(pages);                break;        }       // adapter.notifyDataSetChanged();    }}

5、在adapter中的代码

package com.example.administrator.retrofit;import android.content.Context;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.RecyclerView.ViewHolder;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.TextView;import com.bumptech.glide.Glide;import java.util.ArrayList;import bean.DataInfo;/** * Created by Administrator on 2016/6/25. */public class MyAdapter extends RecyclerView.Adapter implements View.OnClickListener {    private Context context;    private ArrayList<DataInfo.Info> list;    public MyAdapter(Context context, ArrayList<DataInfo.Info> list) {        this.context = context;        this.list = list;    }    private OnRecyclerViewItemClickListener mOnItemClickListener = null;    @Override    public void onClick(View v) {        if (mOnItemClickListener != null) {            //注意这里使用getTag方法获取数据            mOnItemClickListener.onItemClick(v, (DataInfo.Info) v.getTag());        }    }    public  interface OnRecyclerViewItemClickListener {        void onItemClick(View view , DataInfo.Info data);    }    public void setOnItemClickListener(OnRecyclerViewItemClickListener listener) {        this.mOnItemClickListener = listener;    }    @Override    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = LayoutInflater.from(context).inflate(R.layout.item, null);        ViewHodler vh=new ViewHodler(view);        LinearLayout.LayoutParams lp = new LinearLayout.                LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);        view.setLayoutParams(lp);        view.setOnClickListener(this);        return vh;    }    @Override    public void onBindViewHolder(ViewHolder holder, int position) {        ViewHodler mHodler = (ViewHodler) holder;        mHodler.textview.setText("this is item "+position );        Glide.with(context)                .load(list.get(position).url)                .centerCrop()                .placeholder(R.color.app_primary_color)                .crossFade()                .into(mHodler.imageView);        Log.i("aaaa", list.get(position)._id);        mHodler.itemView.setTag(list.get(position));    }    @Override    public int getItemCount() {        return list.size();    }    class ViewHodler extends RecyclerView.ViewHolder{        private TextView textview;        private ImageView imageView;        public ViewHodler(View itemView) {            super(itemView);            textview= (TextView) itemView.findViewById(R.id.textview);            imageView= (ImageView) itemView.findViewById(R.id.image);//            itemView.setOnClickListener(new View.OnClickListener() {//                @Override//                public void onClick(View v) {//                    Toast.makeText(context,"click"+getPosition(),Toast.LENGTH_SHORT).show();//                }//            });        }    }}

Bean代码

public class DataInfo {    public String error;    public ArrayList<Info> results;    public class Info{        public String _id;        public String url;    }}

代码as下载地址
http://download.csdn.net/detail/androidxiaogang/9688216

3 1