使用XRecyclerview和Retrofit实现列表的数据展示

界面有点丑，可以在布局文件里优化一下

使用的依赖和权限

implementation 'io.reactivex.rxjava2:rxandroid:2.0.2'
implementation 'io.reactivex.rxjava2:rxjava:2.1.12'
implementation 'com.jakewharton.rxbinding2:rxbinding:2.1.1'
implementation 'com.squareup.okhttp3:logging-interceptor:3.10.0'
implementation 'com.squareup.retrofit2:retrofit:2.4.0'
implementation 'com.squareup.retrofit2:converter-gson:2.4.0'
implementation 'com.squareup.retrofit2:adapter-rxjava2:2.4.0'
implementation 'com.facebook.fresco:fresco:0.12.0'
// 支持 GIF 动图，需要添加
implementation 'com.facebook.fresco:animated-gif:0.12.0'
implementation 'com.android.support:support-v4:27.1.1'
implementation 'com.sunfusheng:marqueeview:1.3.3'
implementation 'com.jcodecraeer:xrecyclerview:1.3.2'
implementation 'com.youth.banner:banner:1.4.10'
implementation 'com.android.support:design:27.1.1'
implementation 'com.scwang.smartrefresh:SmartRefreshLayout:1.0.4-7'
implementation 'com.jakewharton:butterknife:8.8.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
implementation 'com.github.bumptech.glide:glide:4.5.0'
implementation 'org.greenrobot:eventbus:3.0.0'

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS"/>
<uses-permission android:name="android.permission.CAMERA"/>

activity_main

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="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:orientation="vertical"
    tools:context=".MainActivity">
    <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/my_srl"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <com.jcodecraeer.xrecyclerview.XRecyclerView
            android:id="@+id/xrecyel_view"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">
        </com.jcodecraeer.xrecyclerview.XRecyclerView>
    </android.support.v4.widget.SwipeRefreshLayout>

</LinearLayout>

item_layout

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="100dp">
    <TextView
        android:id="@+id/text_title"
        android:layout_marginTop="8sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="111"/>

    <com.facebook.drawee.view.SimpleDraweeView
        android:id="@+id/simle_view"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_marginLeft="10dp"
        android:layout_toRightOf="@id/text_title"/>

</RelativeLayout>

item_layout02

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <TextView
        android:id="@+id/title_view"
        android:layout_marginTop="8sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="111"/>
    <com.facebook.drawee.view.SimpleDraweeView
        android:id="@+id/simpledrawee"
        android:layout_marginTop="10dp"
        android:layout_width="380dp"
        android:layout_height="140dp" />

</LinearLayout>

MainActivity

import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;

import com.bwie.test.adapter.MyAdapter;
import com.bwie.test.bean.BaBean;
import com.bwie.test.evens.Evens;
import com.bwie.test.presenter.MyDataPersenter;
import com.bwie.test.utils.OkhttpUtils;
import com.bwie.test.utils.OnNetListener;
import com.google.gson.Gson;
import com.jcodecraeer.xrecyclerview.XRecyclerView;

import org.greenrobot.eventbus.EventBus;

import java.util.List;

public class MainActivity extends AppCompatActivity implements DataView,MyAdapter.OnClickListener{
    private String url = "http://api.tianapi.com/nba/?key=71e58b5b2f930eaf1f937407acde08fe&num=10";
    private XRecyclerView xrecyel_view;
    private MyAdapter myAdapter;
    private List<BaBean.NewslistBean> list;
    private SwipeRefreshLayout my_srl;

    Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            list = (List<BaBean.NewslistBean>) msg.obj;
            myAdapter = new MyAdapter(MainActivity.this, list);
            xrecyel_view.setAdapter(myAdapter);
            //调用适配器中的点击事件
            myAdapter.OnClick((MyAdapter.OnClickListener) MainActivity.this);
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //查找控件
        xrecyel_view = findViewById(R.id.xrecyel_view);
        my_srl = findViewById(R.id.my_srl);
        my_srl.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                //控制使它显示刷新
                my_srl.setRefreshing(true);
            }
        });

        //设置管理器
        xrecyel_view.setLayoutManager(new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false));

        //初始化P层，将url和本类传过去
        MyDataPersenter persenter = new MyDataPersenter(this);
        persenter.netWork(url);
    }

    @Override
    public void OnItemClick(int position) {
        Evens evens = new Evens();
        String title = list.get(position).getTitle();
        String url = list.get(position).getUrl();
        evens.setName(title);

        EventBus.getDefault().postSticky(evens);
//        //实现跳转
//        Intent intent = new Intent(MainActivity.this, Main2Activity.class);
//        startActivity(intent);
    }

    @Override
    public void toBackHome(List<BaBean.NewslistBean> list) {
        Message msg = new Message();
        msg.obj = list;
        handler.sendMessage(msg);

        my_srl.setRefreshing(false);
    }
}

DataView

import com.bwie.test.bean.BaBean;
import java.util.List;

public interface DataView {
    //接收数据的方法
    void toBackHome(List<BaBean.NewslistBean> list);
}

app文件夹下MyApp

import android.app.Application;
import com.facebook.drawee.backends.pipeline.Fresco;

public class MyApp extends Application{
    @Override
    public void onCreate() {
        super.onCreate();
        //初始化fresco
        Fresco.initialize(this);
    }
}

adapter文件夹下MyAdapter

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.bwie.test.bean.BaBean;
import com.bwie.test.jinfengkai20180613.R;
import com.facebook.drawee.view.SimpleDraweeView;
import java.util.List;

public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
    private Context context;
    private List<BaBean.NewslistBean> list;

    public MyAdapter(Context context, List<BaBean.NewslistBean> list) {
        this.context = context;
        this.list = list;
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view;
        //判断条目的类型 判断引入的布局文件
        int itemViewType = getItemViewType(viewType);
        if(itemViewType==0){
            view = View.inflate(context, R.layout.item_layout, null);
        }else{
            view = View.inflate(context, R.layout.item_layout02, null);
        }
        MyViewHolder myViewHolder = new MyViewHolder(view);
        return myViewHolder;
    }

    //获取条目的类型 然后进行判断
    @Override
    public int getItemViewType(int position) {
        if(position%2==0){
            return 0;
        }else {
            return 1;
        }
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder,final int position) {
        MyViewHolder myViewHolder = (MyViewHolder) holder;
        //得到条目
        int itemViewType = getItemViewType(position);
        if(itemViewType==0){
            myViewHolder.text_title.setText(list.get(position).getTitle());
            myViewHolder.simle_view.setImageURI(list.get(position).getPicUrl());
        }else{
            myViewHolder.title_view.setText(list.get(position).getTitle());
            myViewHolder.simpledrawee.setImageURI(list.get(position).getPicUrl());
        }

        //条目进行点击事件
        myViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                onClickListener.OnItemClick(position);
            }
        });
    }

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

    //创建暴露点击事件的类
    OnClickListener onClickListener;
    public void OnClick(OnClickListener onClickListener){
        this.onClickListener=onClickListener;
    }

    //创建点击事件接口
    public interface OnClickListener{
        void OnItemClick(int position);
    }

    class MyViewHolder extends RecyclerView.ViewHolder{
        private final TextView text_title,title_view;
        private final SimpleDraweeView simle_view;
        private final SimpleDraweeView simpledrawee;

        public MyViewHolder(View view) {
            super(view);
            //找到两个子布局文件的控件id
            simle_view = view.findViewById(R.id.simle_view);
            text_title = view.findViewById(R.id.text_title);
            simpledrawee = view.findViewById(R.id.simpledrawee);
            title_view = view.findViewById(R.id.title_view);
        }
    }
}

model文件夹下DataModel

import com.bwie.test.presenter.MyDataPersenter;

public interface DataModel {
    //请求数据的方法
    void getData(String url, MyDataPersenter presenter);
}

MyDataModel

import com.bwie.test.bean.BaBean;
import com.bwie.test.presenter.MyDataPersenter;
import com.bwie.test.utils.OkhttpUtils;
import com.google.gson.Gson;

import java.io.IOException;
import java.util.List;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;

public class MyDataModel implements DataModel{
    @Override
    public void getData(String url,final MyDataPersenter presenter) {
        OkhttpUtils.doGet(url, new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String json = response.body().string();

                Gson gson = new Gson();
                BaBean baBean = gson.fromJson(json, BaBean.class);
                List<BaBean.NewslistBean> list = baBean.getNewslist();
                presenter.Success(list);
            }
        });
    }
}

presenter文件夹下DataPresenter

import com.bwie.test.bean.BaBean;
import java.util.List;

public interface DataPresenter {
    //成功与失败的方法
    void Success(List<BaBean.NewslistBean> list);
    void Error();
}

MyDataPersenter

import com.bwie.test.bean.BaBean;
import com.bwie.test.jinfengkai20180613.DataView;
import com.bwie.test.model.MyDataModel;
import java.util.List;

public class MyDataPersenter implements DataPresenter{
    //创建构造器
    DataView dataView;
    private final MyDataModel model;

    public MyDataPersenter(DataView dataView) {
        this.dataView = dataView;
        model = new MyDataModel();
    }

    @Override
    public void Success(List<BaBean.NewslistBean> list) {
        //调用V层接收数据的方法
        dataView.toBackHome(list);
    }

    @Override
    public void Error() {
    }

    //接收url
    public void netWork(String url){
        //调用M层请求数据的方法
        model.getData(url,this);
    }
}

utils文件夹下OnNetListener

public interface OnNetListener {
    void onSuccess(String result);
    void onFailed(Exception e);
}

MyInterceptor

import java.io.IOException;
import okhttp3.FormBody;
import okhttp3.HttpUrl;
import okhttp3.Interceptor;
import okhttp3.Request;
import okhttp3.Response;

public class MyInterceptor implements Interceptor{
    @Override
    public Response intercept(Chain chain) throws IOException {
        Response response;
        //区分是GET请求还是POST请求
        Request originRequest = chain.request();
        if ("GET".equals(originRequest.method())) {
            HttpUrl httpUrl = originRequest.url()
                    .newBuilder()
                    .addQueryParameter("source", "android")
                    .build();
            Request request = new Request.Builder().url(httpUrl).build();
            //发送请求
            response = chain.proceed(request);
        } else {
            FormBody.Builder builder = new FormBody.Builder();

            FormBody body = (FormBody) originRequest.body();
            int size = body.size();
            for (int i = 0; i < size; i++) {
                builder.add(body.name(i), body.value(i));
            }
            builder.add("source", "android");
            FormBody formBody = builder.build();
            Request request = new Request.Builder()
                    .url(originRequest.url())
                    .post(formBody)
                    .build();
            response = chain.proceed(request);

        }
        return response;
    }
}

OkhttpUtils

import android.os.Environment;
import android.os.Handler;
import android.os.Looper;
import java.io.File;
import java.io.IOException;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import okhttp3.Cache;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;

public class OkhttpUtils {
    private OkhttpUtils(){};
    static  OkHttpClient client;

    public static OkHttpClient getInstance(){

        if (client==null) {
            //更加安全
            synchronized (OkhttpUtils.class) {
                //缓存的地方     mnt/sdcard
                File file = new File(Environment.getExternalStorageDirectory(), "cache11");
                client = new OkHttpClient().newBuilder()
                        .readTimeout(3000, TimeUnit.SECONDS)   //设置读取超时时间
                        .connectTimeout(3000, TimeUnit.SECONDS) //设置连接的超时时间
                        .cache(new Cache(file, 10 * 1024))
                        .build();
            }
        }
        return client;
    }

    /**
     * get请求
     * Callback  是一个接口
     */
    public static void doGet(String url, Callback callback){
        OkHttpClient client = getInstance();
        Request request = new Request.Builder()
                .url(url)
                .build();
        client.newCall(request).enqueue(callback);
    }

    //post请求
    /**
     * @param url  请求的地址
     * @param parms   请求的参数
     * @param callback  callback
     */
    public static void doPost(String url, Map<String,String> parms, Callback callback){
        OkHttpClient client = getInstance();
        FormBody.Builder body = new FormBody.Builder();
        //key   value
        for (String key:parms.keySet()){
            //value的值
            body.add(key,parms.get(key));
        }
        Request request = new Request.Builder()
                .url(url)
                .post(body.build())
                .build();

        client.newCall(request).enqueue(callback);
    }

    //用来上传图片的
    //url  , 图片  ，参数    Callback
    public static  void upImage(String url, File file, String filenName, Map<String,String> params,
                                Callback callback){
        OkHttpClient client = getInstance();
        //requestBody的实现类  Formbody
        MultipartBody.Builder builder = new MultipartBody.Builder();

        if (params!=null){
            for (String key :params.keySet()){
                builder.addFormDataPart(key,params.get(key));
            }
        }
        //设置类型
        builder.setType(MultipartBody.FORM);
        builder.addFormDataPart("file",filenName, RequestBody.create(MediaType.parse(
                "application/octet-stream"),file));

        Request request = new Request.Builder()
                .url(url)
                .post(builder.build())
                .build();
        client.newCall(request).enqueue(callback);
    }
}

evens文件夹下Evens

public class Evens {
    private String name;
    private int url;
    private int url2;

    public int getUrl2() {
        return url2;
    }

    public void setUrl2(int url2) {
        this.url2 = url2;
    }

    public int getUrl() {
        return url;
    }

    public void setUrl(int url) {
        this.url = url;
    }

    public String getName() {
        return name;
    }

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

bean文件夹下BaBean

import java.util.List;

public class BaBean {

    private int code;
    private String msg;
    private List<NewslistBean> newslist;

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public List<NewslistBean> getNewslist() {
        return newslist;
    }

    public void setNewslist(List<NewslistBean> newslist) {
        this.newslist = newslist;
    }

    public static class NewslistBean {

        private String ctime;
        private String title;
        private String description;
        private String picUrl;
        private String url;

        public String getCtime() {
            return ctime;
        }

        public void setCtime(String ctime) {
            this.ctime = ctime;
        }

        public String getTitle() {
            return title;
        }

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

        public String getDescription() {
            return description;
        }

        public void setDescription(String description) {
            this.description = description;
        }

        public String getPicUrl() {
            return picUrl;
        }

        public void setPicUrl(String picUrl) {
            this.picUrl = picUrl;
        }

        public String getUrl() {
            return url;
        }

        public void setUrl(String url) {
            this.url = url;
        }
    }
}