Okhttp网络请求

adapter包

MyAdapter 

package adapter;

import android.content.Context;
import android.content.Intent;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.bwie.okhttpdemotext.Main2Activity;
import com.bwie.okhttpdemotext.R;
import com.nostra13.universalimageloader.core.ImageLoader;

import java.util.List;

import bean.Bean;

/**
 * Created by 王爱诗 on 2017/10/25.
 */

public class MyAdapter extends RecyclerView.Adapter {
    private Context context;
    private  List list;
    private OnItemListener onItemListener;

    public MyAdapter(Context context,List list){
        this.context=context;
        this.list=list;
    }
    public interface OnItemListener{
        public void onItemClick(Bean.DataBean dataBean);
    }
    public void setonItemListener(OnItemListener onItemListener){
        this.onItemListener=onItemListener;
    }
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.item,null);
        return new MyApter(view);
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        MyApter holder1=(MyApter)holder;
        holder1.tv.setText(list.get(position).getOccupation());
        holder1.tv1.setText(list.get(position).getIntroduction());
        ImageLoader.getInstance().displayImage(list.get(position).getUserImg(),holder1.iv_urlimage);
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent=new Intent(context, Main2Activity.class);
                intent.putExtra("title",list.get(position).getTitle());
                intent.putExtra("url",list.get(position).getUrl());
                context.startActivity(intent);
            }
        });
    }

    @Override
    public int getItemCount() {
        return list.size();
    }
    class MyApter extends RecyclerView.ViewHolder{
        private TextView tv,tv1;
        private final ImageView iv_urlimage;

        public MyApter(View itemView) {
            super(itemView);
            tv= itemView.findViewById(R.id.tv);
            tv1= itemView.findViewById(R.id.tv1);
            iv_urlimage = itemView.findViewById(R.id.iv_urlimage);
        }
    }
}

bean包

BaseBean 

package bean;
 
public class BaseBean {
    public int code;

    public int getCode() {
        return code;
    }

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

Bean

package bean;

import java.util.List;

/**
 * Created by 王爱诗 on 2017/10/25.
 */

public class Bean extends BaseBean{

    
    // private int code;
    private boolean success;
    private int width;
    private int height;
    private Object message;
    private List data;

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

    public boolean isSuccess() {
        return success;
    }

    public void setSuccess(boolean success) {
        this.success = success;
    }

    public int getWidth() {
        return width;
    }

    public void setWidth(int width) {
        this.width = width;
    }

    public int getHeight() {
        return height;
    }

    public void setHeight(int height) {
        this.height = height;
    }

    public Object getMessage() {
        return message;
    }

    public void setMessage(Object message) {
        this.message = message;
    }

    public List getData() {
        return data;
    }

    public void setData(List data) {
        this.data = data;
    }

    public static class DataBean {
        

        private String userImg;
        private int impressEditId;
        private int impressType;
        private String occupation;
        private String url;
        private long createTime;
        private String hxKey;
        private String img;
        private String yulin;
        private String introduction;
        private int replyTimes;
        private String remark;
        private int click;
        private long topTime;
        private int recommend;
        private int userAge;
        private int star;
        private String title;
        private int source;
        private String userName;
        private int reporter;
        private int status;
        private String content;

        public String getUserImg() {
            return userImg;
        }

        public void setUserImg(String userImg) {
            this.userImg = userImg;
        }

        public int getImpressEditId() {
            return impressEditId;
        }

        public void setImpressEditId(int impressEditId) {
            this.impressEditId = impressEditId;
        }

        public int getImpressType() {
            return impressType;
        }

        public void setImpressType(int impressType) {
            this.impressType = impressType;
        }

        public String getOccupation() {
            return occupation;
        }

        public void setOccupation(String occupation) {
            this.occupation = occupation;
        }

        public String getUrl() {
            return url;
        }

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

        public long getCreateTime() {
            return createTime;
        }

        public void setCreateTime(long createTime) {
            this.createTime = createTime;
        }

        public String getHxKey() {
            return hxKey;
        }

        public void setHxKey(String hxKey) {
            this.hxKey = hxKey;
        }

        public String getImg() {
            return img;
        }

        public void setImg(String img) {
            this.img = img;
        }

        public String getYulin() {
            return yulin;
        }

        public void setYulin(String yulin) {
            this.yulin = yulin;
        }

        public String getIntroduction() {
            return introduction;
        }

        public void setIntroduction(String introduction) {
            this.introduction = introduction;
        }

        public int getReplyTimes() {
            return replyTimes;
        }

        public void setReplyTimes(int replyTimes) {
            this.replyTimes = replyTimes;
        }

        public String getRemark() {
            return remark;
        }

        public void setRemark(String remark) {
            this.remark = remark;
        }

        public int getClick() {
            return click;
        }

        public void setClick(int click) {
            this.click = click;
        }

        public long getTopTime() {
            return topTime;
        }

        public void setTopTime(long topTime) {
            this.topTime = topTime;
        }

        public int getRecommend() {
            return recommend;
        }

        public void setRecommend(int recommend) {
            this.recommend = recommend;
        }

        public int getUserAge() {
            return userAge;
        }

        public void setUserAge(int userAge) {
            this.userAge = userAge;
        }

        public int getStar() {
            return star;
        }

        public void setStar(int star) {
            this.star = star;
        }

        public String getTitle() {
            return title;
        }

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

        public int getSource() {
            return source;
        }

        public void setSource(int source) {
            this.source = source;
        }

        public String getUserName() {
            return userName;
        }

        public void setUserName(String userName) {
            this.userName = userName;
        }

        public int getReporter() {
            return reporter;
        }

        public void setReporter(int reporter) {
            this.reporter = reporter;
        }

        public int getStatus() {
            return status;
        }

        public void setStatus(int status) {
            this.status = status;
        }

        public String getContent() {
            return content;
        }

        public void setContent(String content) {
            this.content = content;
        }
    }
}

Main包
Main2Activity

package com.bwie.okhttpdemotext;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;

public class Main2Activity extends AppCompatActivity {

    private WebView wv;
    private String url;
    private String title;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);

        initView();
       
        initDate();
        
    }

    private void initDate() {
        Intent intent = getIntent();
        title = intent.getStringExtra("title");
        url = intent.getStringExtra("url");

        setTitle(title);

        Toast.makeText(Main2Activity.this,"Url的值是+++++++++++++++++"+ url,Toast.LENGTH_SHORT).show();
        wv.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
        wv.getSettings().setJavaScriptEnabled(true);
        wv.getSettings().setSupportZoom(false);
        wv.getSettings().setBlockNetworkLoads(true);
        wv.getSettings().setBlockNetworkImage(true);
        wv.setWebChromeClient(new WebChromeClient());
        wv.setWebViewClient(new WebViewClient());
       /* if(Build.VERSION.SDK_INT>= Build.VERSION_CODES.LOLLIPOP)
        {
           wv.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
        }*/

        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                wv.loadUrl(url);
            }
        });
    }

    private void initView() {
        wv = (WebView) findViewById(R.id.wv);
    }
}

BaseActivity 

package com.bwie.okhttpdemotext;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;


import net.HttpUtil;

import java.util.LinkedList;

/**
 * Created by peng on 2017/9/27.
 */

public class BaseActivity extends AppCompatActivity {
    private LinkedList list = new LinkedList<>();
    protected HttpUtil httpUtil;
    private ProgressDialog dialog;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        list.add(this);
        httpUtil = HttpUtil.getInstance(this);
    }


    public void finshAll() {
        for (Activity ac : list) {
            if (!ac.isFinishing()) {
                ac.finish();
            }
        }
    }

    /**
     * 显示进度条
     */
    protected void showPd() {
        dialog = new ProgressDialog(this);
        dialog.setMessage("正在加載...");
        dialog.show();
    }

    /**
     * 关闭进度条
     */
    protected void dismissPd(){
        if (dialog!=null && !this.isFinishing()){
            dialog.dismiss();
        }
    }
}

 

MainActivity

package com.bwie.okhttpdemotext;

import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;

import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;

import net.OnNetListener;

import java.io.IOException;

import adapter.MyAdapter;
import bean.BaseBean;
import bean.Bean;

public class MainActivity extends BaseActivity {
    private String url="http://www.yulin520.com/a2a/impressApi/news/mergeList?sign=C7548DE604BCB8A17592EFB9006F9265&pageSize=20&gender=2&ts=1871746850&page=1";
    private RecyclerView recyc;
    private MyAdapter adpter;
    //private List list;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        recyc=(RecyclerView)findViewById(R.id.recyc);
        httpUtil.doGet(url, Bean.class, new OnNetListener() {
            @Override
            public void onSuccess(BaseBean baseBean) throws IOException {
                Bean bean= (Bean) baseBean;
                //list=bean.getData();
                adpter = new MyAdapter(MainActivity.this,bean.getData());
                LinearLayoutManager linearLayoutManager=new LinearLayoutManager(MainActivity.this);
                recyc.setLayoutManager(linearLayoutManager);
                recyc.setAdapter(adpter);
            }

            @Override
            public void onError(IOException e) {

            }
        });

        DisplayImageOptions options=new DisplayImageOptions.Builder()
                .cacheInMemory(true)
                .cacheOnDisk(true)
                .build();
        ImageLoaderConfiguration config=new ImageLoaderConfiguration.Builder(this)
                .defaultDisplayImageOptions(options)
                .build();
        ImageLoader.getInstance().init(config);

       /* httpUtil.doPost(url, null, Bean.class, new OnNetListener() {
            @Override
            public void onSuccess(BaseBean baseBean) throws IOException {
                Bean bean= (Bean) baseBean;

                MyAdpter adpter = new MyAdpter(MainActivity.this,bean.getData());
                LinearLayoutManager linearLayoutManager=new LinearLayoutManager(MainActivity.this);
                recyc.setLayoutManager(linearLayoutManager);
                recyc.setAdapter(adpter);

            }
            @Override
            public void onError(IOException e) {

            }
        });*/
    }
}

net包

BaseNetListener 

package net;


import java.io.IOException;
import bean.BaseBean;

public class BaseNetListener implements OnNetListener {

    @Override
    public void onSuccess(BaseBean baseBean) throws IOException {

    }

    @Override
    public void onError(IOException e) {

    }
}

HttpUtil

package net;

import android.content.Context;
import android.os.Environment;
import android.os.Handler;
import android.os.Looper;
import android.widget.Toast;
import com.google.gson.Gson;

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

import bean.BaseBean;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
import okhttp3.logging.HttpLoggingInterceptor;;

/**
 * Created by peng on 2017/9/27.
 */

public class HttpUtil {
    private  static HttpUtil httpUtil;
    private final OkHttpClient client;
    private Context context;
    private Handler handler = new Handler(Looper.getMainLooper());

    private HttpUtil(Context context) {
        //缓存目录
        File sdcache = new File(Environment.getExternalStorageDirectory(), "cache");
        int cacheSize = 10 * 1024 * 1024;
        HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
        logging.setLevel(HttpLoggingInterceptor.Level.BODY);
        client = new OkHttpClient.Builder()
                .addInterceptor(logging)
//                .addNetworkInterceptor(new CacheInterceptor())
//                .writeTimeout(20, TimeUnit.SECONDS)
//                .readTimeout(20, TimeUnit.SECONDS)
//                .cache(new Cache(sdcache,cacheSize))
                .build();
        this.context = context;

    }

    public static HttpUtil getInstance(Context context) {
        if (httpUtil == null) {
            synchronized (HttpUtil.class) {
                if (httpUtil == null) {
                    httpUtil = new HttpUtil(context);
                }
            }
        }
        return httpUtil;
    }

    public void doPost(String url, Map params, final Class clazz, final OnNetListener onNetListener) {
        //网络判断
        if (!NetWorkUtil.isNetworkAvailable(context)) {
            Toast.makeText(context, "没有网络，请查看设置", Toast.LENGTH_SHORT).show();
            return;
        }
        if (params != null && params.size() > 0) {
            FormBody.Builder builder = new FormBody.Builder();
            params.put("client", "android");
            for (Map.Entry entry : params.entrySet()) {
                builder.add(entry.getKey(), entry.getValue());
            }
            FormBody formBody = builder.build();

            final Request request = new Request.Builder().url(url).post(formBody).build();
            client.newCall(request).enqueue(new Callback() {
                @Override
                public void onFailure(Call call, IOException e) {

                }

                @Override
                public void onResponse(Call call, Response response) throws IOException {
                    final BaseBean baseBean = (BaseBean) new Gson().fromJson(response.body().string(), clazz);
                    int code = baseBean.getCode();
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            try {
                                onNetListener.onSuccess(baseBean);
                            } catch (IOException e) {
                                e.printStackTrace();
                            }
                        }
                    });
                }
            });
        }


    }

    public void download(String url, Callback callback) {
        Request request = new Request.Builder().url(url).build();
        client.newCall(request).enqueue(callback);

    }

    public void doGet(String url, final Class clazz, final OnNetListener onNetListener) {
        //网络判断
        if (!NetWorkUtil.isNetworkAvailable(context)) {
            Toast.makeText(context, "没有网络，请查看设置", Toast.LENGTH_SHORT).show();
            return;
        }
        Request.Builder builder = new Request.Builder();
        builder.url(url);
        final Request request = builder.build();
        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, final IOException e) {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        onNetListener.onError(e);
                    }
                });

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String string = response.body().string();
               // final BaseBean baseBean = (BaseBean) new Gson().fromJson(string, clazz);
                final BaseBean baseBean = (BaseBean) new Gson().fromJson(string, clazz);
                int code = baseBean.getCode();
                if (code == 1) {
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            try {
                                onNetListener.onSuccess(baseBean);
                            } catch (IOException e) {
                                e.printStackTrace();
                            }
                        }
                    });

                } else if (code == 400) {

                } else if (code == 300) {

                }
            }
        });
    }

    /**
     * @param url
     * @param params
     * @param header
     * @param clazz
     * @param onNetListener
     */
    public void doGet(String url, HashMap params, HashMap header, final Class clazz, final OnNetListener onNetListener) {

        //网络判断
        if (!NetWorkUtil.isNetworkAvailable(context)) {
            Toast.makeText(context, "没有网络，请查看设置", Toast.LENGTH_SHORT).show();
            return;
        }

        Request.Builder builder = new Request.Builder();
        if (params != null && params.size() > 0) {
            StringBuilder sb = new StringBuilder();
            for (Map.Entry entry : params.entrySet()) {
                sb.append(url);
                sb.append("?");
                sb.append(entry.getKey());
                sb.append("=");
                sb.append(entry.getValue());
            }
            url = sb.toString();
        }
        builder.url(url);
        //添加请求头
        if (params != null && header.size() > 0) {
            for (Map.Entry entry : params.entrySet()) {
                builder.addHeader(entry.getKey(), entry.getValue());
            }
        }
        final Request request = builder.build();
        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, final IOException e) {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        onNetListener.onError(e);
                    }
                });

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String string = response.body().string();
                final BaseBean baseBean = (BaseBean) new Gson().fromJson(string, clazz);
                int code = baseBean.getCode();
                if (code == 200) {
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            try {
                                onNetListener.onSuccess(baseBean);
                            } catch (IOException e) {
                                e.printStackTrace();
                            }
                        }
                    });

                } else if (code == 400) {

                } else if (code == 300) {

                }
            }
        });
    }

    /**
     * 上传
     *
     * @param url
     * @param fileName
     */
    public void uploadFile(String url, String fileName) {
        String file = Environment.getExternalStorageState() + "/" + fileName;
        RequestBody fileBody = RequestBody.create(MediaType.parse("application/octet-stream"), file);
        //创建RequestBody 设置类型等
        RequestBody requestBody = new MultipartBody.Builder()
                .setType(MultipartBody.FORM)
                .addFormDataPart("file", fileName, fileBody).build();
        Request request = new Request.Builder().url(url).post(requestBody).build();
        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {

            }
        });
    }

    /**
     * 下载
     *
     * @param url
     */
    public void download(String url) {
        Request request = new Request.Builder().url(url).build();
        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {

            }
        });

    }
}

NetWorkUtil

package net;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

/**
 * Created by peng on 2017/9/27.
 */

public class NetWorkUtil {
    // check all network connect, WIFI or mobile
    public static boolean isNetworkAvailable(final Context context){
        boolean hasWifoCon = false;
        boolean hasMobileCon = false;
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(context.CONNECTIVITY_SERVICE);
        NetworkInfo[] networkInfo = cm.getAllNetworkInfo();
        for (NetworkInfo net:networkInfo){
            String typeName = net.getTypeName();
            if(typeName.equalsIgnoreCase("WIFI")){
                if(net.isConnected()){
                    hasWifoCon=true;
                }
            }
            if(typeName.equalsIgnoreCase("MOBILE")){
                if(net.isConnected()){
                    hasWifoCon=true;
                }
            }
        }
        return hasWifoCon || hasMobileCon;
    }

}

OkhttpUtils

package net;

import android.os.Environment;
import android.os.Handler;
import android.os.Looper;

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

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
import okhttp3.logging.HttpLoggingInterceptor;

/**
 * Created by peng on 2017/10/11.
 * 使用懒汉式创建该对象，并保证线程安全
 */

public class OkHttpUtils implements IHttpListener {
    private static OkHttpUtils okHttpUtils;
    private final OkHttpClient httpClient;
    private final Handler handler;

    //构造方法私有化
    private OkHttpUtils() {
        HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
        logging.setLevel(HttpLoggingInterceptor.Level.BASIC);
        httpClient = new OkHttpClient.Builder()
                .addInterceptor(logging)
                .build();
        handler = new Handler(Looper.getMainLooper());
    }

    public static OkHttpUtils getInstance() {
        if (okHttpUtils == null) {
            synchronized (OkHttpUtils.class) {
                if (okHttpUtils == null) {
                    okHttpUtils = new OkHttpUtils();
                }
            }
        }
        return okHttpUtils;
    }


    /**
     * post请求
     *
     * @param url
     * @param params
     * @param clazz
     * @param onNetListener
     */
    public void doPost(String url, Map params, Class clazz, OnNetListener onNetListener) {

        FormBody.Builder builder = new FormBody.Builder();
        for (Map.Entry entry : params.entrySet()) {
            builder.add(entry.getKey(), entry.getValue());
        }
        FormBody formBody = builder.build();
        Request request = new Request.Builder().url(url).post(formBody).build();

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

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {

            }
        });

    }

    public void doGet(String url, Class clazz, OnNetListener onNetListener) {
        Request request = new Request.Builder()
                .url(url)
                .build();

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

            }

            @Override
            public void onResponse(Call call, final Response response) throws IOException {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
//                        onNetListener.onSuccess();
                    }
                });
            }
        });
    }


    public void uploadFile(String url, String fileName) {
        String file = Environment.getExternalStorageState() + "/" + fileName;
        RequestBody fileBody = RequestBody.create(MediaType.parse("application/octet-stream"), file);
        //创建RequestBody 设置类型等
        RequestBody requestBody = new MultipartBody.Builder()
                .setType(MultipartBody.FORM)
                .addFormDataPart("file", fileName, fileBody).build();
        Request request = new Request.Builder().url(url).post(requestBody).build();
        httpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {

            }
        });
    }

    public void download(String url) {
        Request request = new Request.Builder().url(url).build();
        httpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {

            }
        });

    }
}

OnNetListener

package net;


import java.io.IOException;

import bean.BaseBean;

/**
 * Created by peng on 2017/9/27.
 */

public interface OnNetListener {
    public void onSuccess(BaseBean baseBean) throws IOException;

    public void onError(IOException e);
}

布局main

xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    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" tools:context="com.bwie.okhttpdemotext.MainActivity">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyc"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    android.support.v7.widget.RecyclerView>

android.support.constraint.ConstraintLayout>

布局main2

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"
    tools:context="com.bwie.okhttpdemotext.Main2Activity">


    <WebView
        android:id="@+id/wv"
        android:layout_width="match_parent"
        android:layout_height="match_parent">WebView>
LinearLayout>

布局item1

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">

    <ImageView
        android:id="@+id/iv_urlimage"
        android:layout_width="match_parent"
        android:layout_height="250dp"
        android:scaleType="centerCrop" />

    <TextView
        android:id="@+id/tv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/tv1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
LinearLayout>

权限

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

依赖

compile 'com.squareup.okhttp3:okhttp:3.9.0'
compile 'com.google.code.gson:gson:2.8.2'
compile 'com.squareup.okhttp3:logging-interceptor:3.9.0'
compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'
compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'